Method for manufacturing anti-cracking high flame-retardant flexible triamine facing inorganic panel and product thereof

Abstract

The application discloses a manufacturing method of anti-cracking high-flame-retardant flexible three-amine finishing inorganic board and a product thereof. Special paper containing acrylic resin is compounded with impregnated film paper to realize softening treatment of the impregnated film paper, and an organic finishing layer with a thickness of less than or equal to 0.2 mm is formed. Then, flame-retardant adhesive is designed to wet and penetrate into the surface of the inorganic board, and then fill the surface pores of the inorganic substrate to form "glue nails", so as to ensure that the flame-retardant adhesive layer is firmly combined with the inorganic substrate. The "inorganic" board surface is covered with an "organic" adhesive layer to solve the problems of difficult pressing and unevenness of the inorganic board surface, and then the combination of the organic finishing layer and the inorganic board surface is realized and is not easy to peel off. The board prepared by the application not only reaches the A-grade non-combustible level, but also has excellent wear resistance, scratch resistance, weather resistance and environmental protection performance. In addition, the impregnated film paper can be conveniently designed in patterns, colors and embossing, so that the board prepared by the application also has a variety of surface designs.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of plate, and particularly relates to a manufacturing method of a crack-proof high-flame-retardant flexible three-amine decorative inorganic plate and a product thereof. BACKGROUND

[0002] The inorganic plate produced by the traditional technology process (magnesium oxysulfate plate, calcium silicate plate, cement fiber plate, etc.) is difficult to be directly pasted with the impregnated glue film paper, which greatly limits the application range of the inorganic plate, and the main reason is that:

[0003] The impregnated glue film paper is generally made by impregnating "organic" adhesive, and thus the plate surface of the "inorganic" plate has poor affinity with the impregnated glue film paper impregnated with "organic" adhesive, which leads to the difficulty in firmly pasting the two when they are hot-pressed and compounded, and even if they are pasted, the surface layer is prone to peeling and cracking in the later period.

[0004] On the other hand, the inorganic plate generally has high surface hardness, and the raw materials and preparation process also lead to poor surface flatness, so that the impregnated glue film paper is difficult to fully contact and uniformly paste on the plate surface, and is prone to problems such as bubbling and dry flowers.

[0005] In order to realize the compounding of the impregnated glue film paper and the inorganic plate, the patent document with the application number 201210336015.6 discloses a manufacturing process of ice and fire plate, which is composed of a base plate and a melamine impregnated paper, the base plate is a non-asbestos fiber cement plate, and the melamine impregnated paper is a decorative paper impregnated with melamine resin adhesive, the manufacturing process includes high-brightness decorative paper impregnation, non-asbestos fiber cement plate pretreatment and high-temperature pasting, and it is disclosed that the melamine impregnated paper is laid flat on the front and back surfaces of the pretreated non-asbestos fiber cement base plate, a hot press is used for pressing, when the temperature of the pressing plate of the hot press is 80℃±10℃, the melamine impregnated paper and the base plate enter the hot press at a pressure of 10-15 MPa, and are simultaneously heated to a temperature of 110-150℃ for a certain time, and then the temperature of the machine is naturally cooled to 70℃±10℃ before the plate is unloaded, and the finished product is obtained.

[0006] The above-mentioned prior art directly presses the impregnated paper on the fiber cement plate by the hot press to form once, but there is still room for improvement:

[0007] On the one hand, in order to prevent bubbling, the technology scheme needs to wait for the hot press to heat to 80℃±10℃, and then wait for the hot press to heat to 110-150℃ after the plate and the glue film paper are laid, and then wait for the hot press to cool to 70℃±10℃ after the hot pressing is completed before the plate is unloaded, and as a large equipment, the plate hot press needs a very long waiting time whether it is waiting for heating or cooling, so that a considerable part of the production process design is used for waiting for the target temperature, and the production efficiency is low and the production energy consumption is high.

[0008] On the other hand, since one hot press forming is adopted, the surface flatness of the substrate is required to be very high, and if the bonding interface between the substrate (inorganic) and the impregnated paper (organic) is not well treated, the product is prone to surface cracking, surface peeling and other serious quality problems during use, which also leads to higher process requirements for the surface pretreatment of the board, and is not conducive to improving the production efficiency.

[0009] The applicant is one of the leading enterprises in the board industry, and has been committed to the research and improvement of board-related technologies for a long time. In order to manufacture a composite board including an inorganic board surface and an impregnated adhesive film paper veneer, and to avoid the problem of low production efficiency caused by the hot press composite process of the prior art, the inventors began to research and design the production and manufacture of the target composite board through "cold pressing", and subsequently formed a technology and made a patent application, i.e. the patent document with the application number 201611220805.2, which discloses a manufacturing method of a fireproof and waterproof decorative board, comprising the following steps: A. surface treatment of a thermosetting resin impregnated paper high-pressure laminated board and a magnesium oxide board; B. pressing the thermosetting resin impregnated paper high-pressure laminated board with the impregnated adhesive film paper; C. double-sided gluing of the magnesium oxide board, and pasting the thermosetting resin impregnated paper high-pressure laminated board pressed with the impregnated adhesive film paper in step B on the glued surface of the magnesium oxide board; D. transferring the combined semi-finished product in step C to a cold press for cold pressing; E. unloading and trimming after cold pressing is completed.

[0010] The technical solution does not directly composite the impregnated adhesive film paper and the inorganic board through hot pressing, but designs a high-pressure high-layer board that connects the "organic" impregnated adhesive film paper veneer and the "inorganic" board after special treatment, thereby avoiding the waiting time of the hot press machine "warming up-rewarming-cooling down" in the prior art, and improving the production efficiency. However, since the applicant is a board source supplier, the high-pressure high-layer board is also self-produced, and the inventors find that the "high-pressure high-layer board" in the prior application is also a board with a relatively long production cycle and high production cost, so there is still room for improvement in terms of production efficiency and production cost. Secondly, the high-pressure laminated board of the technical solution basically has a thickness of 0.5-1mm to achieve the target thickness, and the thickness control advantage is slightly insufficient if the technology is applied to light and thin boards. Finally, the glue in the prior application basically only adheres to the outermost surface of the magnesium oxide board, which is prone to delamination and has limited improvement effect on toughness.

[0011] In summary, the inventors believe that there is still room for improvement in the prior application, and it is necessary to further research and design a production process that can quickly veneer the inorganic board surface and ensure the performance of the board. SUMMARY

[0012] In view of the problems in the related art, the present application proposes a manufacturing method of a crack-resistant high-flame-retardant flexible three-amine veneered inorganic board and a product thereof to overcome the above technical problems existing in the prior art.

[0013] The technical scheme of the present application is implemented as follows:

[0014] A manufacturing method of a high crack-resistant and high flame-retardant flexible three-amine surface inorganic panel, comprising the following steps:

[0015] (1) preparing a special paper containing an acrylic resin as a substrate connecting layer, laying impregnated film paper on the substrate connecting layer, and then hot pressing and compounding to make a special flexible three-amine paper with a thickness of ≤0.2 mm as a surface layer, for standby use;

[0016] (2) mixing a two-component polyurethane adhesive and a flame retardant in a weight ratio of 100:1-3 to make a flame-retardant adhesive for standby use;

[0017] (3) pretreating the surface of a porous inorganic substrate;

[0018] (4) coating a UV coating on the back of the inorganic substrate, irradiating and curing to form a balanced waterproof layer;

[0019] (5) coating the flame-retardant adhesive made in step (2) on the front surface of the inorganic substrate to form a flame-retardant adhesive layer, and then laying the flexible three-amine paper made in step (1) on the top surface of the flame-retardant adhesive layer, and roll pressing to perform pre-bonding, and the flame-retardant adhesive at least penetrates into the surface pores of the inorganic substrate;

[0020] (6) stacking and placing the panel made in step (5), and then cold pressing and compounding to obtain a high crack-resistant and high flame-retardant flexible three-amine surface inorganic panel.

[0021] Firstly, considering that it is difficult to cold press and directly bond the impregnated film paper to the flame-retardant adhesive layer or the inorganic panel, the present application uses a specially designed flexible three-amine paper as the surface, i.e., the impregnated film paper is compounded with a substrate connecting layer, the hot pressing and compounding of the impregnated film paper and the substrate connecting layer is a softening treatment of the impregnated film paper, which is beneficial to subsequent pressing and bonding with other layers, and can effectively prevent cracking and brittle cracking of the impregnated film paper after pressing and bonding, and the substrate connecting layer can also effectively fix the flame-retardant adhesive layer instead of the impregnated film paper, and at the same time, the production cycle of the substrate connecting layer is much shorter than that of high-pressure high-layer panels, which effectively improves the production efficiency of the surface;

[0022] Secondly, the flame-retardant adhesive of the present application will wet and penetrate into the inorganic panel during laying and leveling, and then fill the surface pores of the inorganic substrate to form "glue nails", which can ensure firm bonding between the flame-retardant adhesive layer and the inorganic substrate, and at the same time, improve the toughness and cracking problems of the inorganic substrate, and use the "organic" adhesive layer to cover the "inorganic" panel surface to solve the problems of difficult pressing and bonding of the inorganic panel surface and uneven panel surface, and then realize the combination of the organic surface and the inorganic panel surface without easy peeling;

[0023] Again, the more and thicker the layer structure (such as the finishing layer, the glue layer, etc.) other than the inorganic substrate, the higher the organic matter content is relatively, and the poorer the flame retardant performance of the plate is, which is also the reason why the commercially available high-pressure high-rise plate is difficult to achieve the flame-retardant A-level, therefore, the thickness of the finishing layer is strictly controlled to be less than or equal to 0.2 mm, so as to effectively control the low content of organic matter of the plate, and then achieve the A-level non-combustible level, and the flame retardant is added to further improve the flame retardant performance of the present application, it should be noted that if the flame retardant is added in excess, the bonding strength between the layers will be affected;

[0024] Finally, under the premise of ensuring excellent performance of the plate, the process is simplified, and the organic finishing and inorganic substrate are only required to be pre-stuck once by rolling and cold-pressed once, the pressure of the pre-stuck rolling ensures that the flame-retardant glue fully penetrates into the interior of the inorganic substrate to form a "glue nail", and at the same time, the cold-pressed lamination of the flexible melamine paper and the flame-retardant glue layer will not cause the problem of bubbling, and the cold-pressing ensures the bonding strength between the layers, avoids the technical problem of temperature limitation of production efficiency caused by hot-pressing process, effectively improves the production efficiency of the organic-inorganic composite step, reduces energy consumption, and realizes the rapid finishing of the inorganic plate surface.

[0025] It should be noted that the UV coating of the present application can also be completed after cold-pressing.

[0026] Preferably, the impregnated glue film paper contains at least 60-80% urea-formaldehyde resin and 20-40% melamine-formaldehyde resin by weight ratio, and the weight percentage of the impregnated glue solution is 100%, and other functional additives can also be added adaptively according to the actual research and development design by those skilled in the art.

[0027] The impregnated glue film paper is controlled to have a glue impregnation amount of 135-170%, so as to ensure the protection effect of the impregnated glue film paper as the outermost structure of the plate.

[0028] Preferably, the special paper is one of non-woven fabric or kraft paper, and by adding non-woven fabric or kraft paper as a reinforcing material, the surface bonding strength and crack resistance of the impregnated glue film paper finishing surface can be improved.

[0029] The grammage of the special paper is 35-55g / m 2 , the transverse dry tensile strength is greater than or equal to 15N / 15mm, the longitudinal dry tensile strength is greater than or equal to 35N / 15mm, and the thickness is controlled to be 0.10mm±0.01mm.

[0030] More preferably, the non-woven fabric or kraft paper contains 8-15% by weight of acrylic resin, which is preferably added to the raw materials during the preparation of the non-woven fabric or kraft paper, or can be added to the non-woven fabric or kraft paper by coating, impregnation or the like, mainly to increase the processability and mechanical properties of the non-woven fabric or kraft paper, and the remaining raw materials of the non-woven fabric or kraft paper can be produced according to the specific type of paper using conventional raw materials and proportions.

[0031] Preferably, the hot pressing of step (1) is specifically operated at a temperature of 175-190℃, a unit pressure of 2.5-4.5MPa, and a hot pressing time of 15-50s.

[0032] Preferably, in step (2), the two-component polyurethane adhesive is a product of model PU-61 produced by Taihe Chemical Co., Ltd., which includes A glue and B glue, and the flame retardant is a product of model 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, B glue and flame retardant is 4-5:1:0.1.

[0033] It should be noted that the flame-retardant adhesive is prepared by adding the flame retardant to the A glue and then adding the B glue.

[0034] Preferably, step (3) is to pretreat the surface of the porous inorganic substrate, which is specifically operated by slightly sanding the surface of the inorganic substrate with a 150-200 mesh sand belt to improve the flatness of the surface, which is beneficial to the leveling and impregnation of the flame-retardant adhesive and UV coating, and thus improves the pressing effect of the inorganic substrate and the adjacent layer structure.

[0035] Preferably, the inorganic substrate is a magnesium oxysulfate board or a calcium silicate board, and the water content of the magnesium oxysulfate board or calcium silicate board is controlled to be 6-10%, and the density is controlled to be 1000-1500kg / m 3 .

[0036] Preferably, the coating amount of the UV coating in step (4) is 10-30g / m 2 to form a balanced waterproof layer, which plays a role in balancing and waterproofing the board. Specifically, the UV coating is a product of model RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0037] Preferably, the coating amount of the flame-retardant adhesive in step (5) is 50-100g / m 2 .

[0038] Preferably, the roller pressing process parameters in step (5) are as follows: the hardness of the rubber roller (Shore A) is 35-45 degrees, the pressure cylinder pressure of the pressing roller is 0.4-0.6MPa, and the speed is 6-9m / min.

[0039] Preferably, the specific operation of stacking and placing of step (6) is as follows:

[0040] When the ambient temperature is greater than or equal to 20℃, the cold pressing should be performed within 40 minutes, the unit pressure of cold pressing is 1.0-3.0 MPa, and the cold pressing time is 1.2-1.8 h.

[0041] When the ambient temperature is less than 20℃, the cold pressing should be performed within 60 minutes, the unit pressure of cold pressing is 1.0-3.0 MPa, and the cold pressing time is 2.2-2.8 h.

[0042] The application further discloses the anti-cracking high-flame-retardant flexible three-amine veneer inorganic plate prepared by the manufacturing method.

[0043] The thickness of the veneer layer is less than or equal to 0.2 mm, and the veneer layer is formed by hot pressing the impregnated glue film paper layer on the substrate connecting layer.

[0044] The inorganic substrate is a porous cavity structure, the flame-retardant glue layer extends into the inorganic substrate through the cavities, and the flame-retardant glue layer completely covers the inorganic substrate and forms glue nails in the cavities after being solidified.

[0045] Preferably, the thickness of the substrate connecting layer is controlled to be 0.10 mm±0.01 mm, and the layer structure mainly has the functions of softening the impregnated glue film paper and the substrate; if the thickness is too large, the functions are contrary to each other and the thickness of the veneer layer is not controlled.

[0046] Preferably, the impregnated glue film paper layer is formed by impregnating and wrapping the raw paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0047] Preferably, the thickness of the impregnated glue film paper is 0.05-0.10 mm; if the thickness is too large, the softening treatment is difficult and the thickness of the veneer layer is not controlled.

[0048] Preferably, the thickness of the flame-retardant glue layer is 0.05-0.1 mm.

[0049] Preferably, the thickness of the inorganic substrate is 3-18 mm.

[0050] Preferably, the thickness of the balanced waterproof layer is 0.01-0.1 mm.

[0051] The plate prepared by the application not only reaches the A-grade non-combustible level and overcomes the problems of easy peeling and easy cracking of the organic veneer-inorganic plate composite, but also has excellent wear resistance, scratch resistance, weather resistance and environmental protection performance; in addition, the impregnated glue film paper can be conveniently designed as a roll material with patterns, colors and embossing, so that the plate prepared by the application has a rich and varied plate surface design. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A schematic diagram of the plate structure of the present application.

[0053] Labeling instructions:

[0054] A, decorative layer;

[0055] 1, impregnated film paper layer;

[0056] 2, substrate connecting layer;

[0057] 3, inorganic substrate;

[0058] 4, fire-retardant glue layer; 401, glue nails. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0061] Embodiment 1

[0062] A manufacturing method of a crack-resistant high-flame-retardant flexible three-amine decorative inorganic plate, comprising the following steps:

[0063] (1) A special paper containing acrylic resin is prepared as a substrate connecting layer, the special paper is kraft paper, and the raw materials of the kraft paper contain 8% acrylic resin by weight, and the rest of the raw materials and production process are not limited;

[0064] The grammage of the special paper is 35g / m 2 , the transverse dry tensile strength is ≥15N / 15mm, and the longitudinal dry tensile strength is ≥35N / 15mm.

[0065] Prepare the impregnated film paper, the impregnated glue solution of which is composed of 60% urea-formaldehyde resin and 40% melamine-formaldehyde resin by weight proportion, and the impregnation amount of the impregnated film paper is controlled to be 135%.

[0066] Lay the impregnated film paper on the substrate connecting layer, and then composite by hot pressing machine, the hot pressing temperature is 175℃, the unit pressure is 2.5MPa, and the hot pressing time is 50s, to make the flexible triamine paper, and perform thickness test, if the thickness is less than or equal to 0.2mm, it is qualified, and used as the facing layer.

[0067] (2) The two-component polyurethane adhesive is PU-61 product produced by Tai'er Chemical Co., Ltd., which includes A glue and B glue, and the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 5:1:0.1.

[0068] The flame-retardant adhesive is prepared by adding the flame retardant into the A glue and then adding the B glue, and the prepared flame-retardant adhesive needs to be used within half an hour after preparation.

[0069] (3) Pretreat the surface of the porous inorganic substrate

[0070] The inorganic substrate is calcium silicate board, the water content of which is controlled to be 6%, and the density of which is controlled to be 1000kg / m 3 The surface of the inorganic substrate is slightly sanded with 150 mesh sand belt, and then cleaned and electrostatically dedusted to ensure the cleanliness of the surface of the inorganic substrate.

[0071] (4) Apply UV coating on the back surface of the inorganic substrate, the coating amount of which is 10g / m 2 , and irradiate and cure to form the balanced waterproof layer.

[0072] The UV coating is RQ101 product produced by Guangdong Riqi New Material Co., Ltd.

[0073] (5) Deliver the board to the glue coating machine through the automatic conveying platform, control the feeding speed of the glue coating machine to be 10% less than the discharging speed, and start to coat the flame-retardant adhesive prepared in step (2) on the front surface of the inorganic substrate, the coating amount of the flame-retardant adhesive being 50g / m 2 to form the flame-retardant adhesive layer.

[0074] Then deliver the board to the pre-bonding station, lay the flexible triamine paper prepared in step (1) on the top surface of the flame-retardant adhesive layer, and roll to pre-bond, the hardness of the glue roll (Shore A) being 35 degrees, the pressure of the roll cylinder being 0.4MPa, and the speed being 6m / min, the flame-retardant adhesive penetrates into the surface pores of the inorganic substrate.

[0075] (6) The ambient temperature of the stacking environment is ≥20℃, and the board is cold-pressed within 40 min, with a unit pressure of 1.0 MPa and a cold-pressing time of 1.2 h, to obtain the anti-cracking high-flame-retardant flexible three-amine decorative inorganic board.

[0076] The anti-cracking high-flame-retardant flexible three-amine decorative inorganic board prepared in the embodiment comprises, from top to bottom, a decorative layer, a flame-retardant glue layer (0.05 mm), an inorganic substrate (3 mm), and a balance waterproof layer (0.01 mm).

[0077] The decorative layer is formed by hot-pressing an impregnated glue film paper layer (0.05 mm) on a substrate connecting layer (0.09 mm), wherein the impregnated glue film paper layer is formed by impregnating and wrapping raw paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0078] The inorganic substrate has a porous cavity structure, the flame-retardant glue layer extends into the inorganic substrate through the cavities, and the flame-retardant glue layer completely covers the inorganic substrate after curing and forms glue nails in the cavities, as shown in Figure 1 .

[0079] Example 2

[0080] A manufacturing method of an anti-cracking high-flame-retardant flexible three-amine decorative inorganic board, comprising the following steps:

[0081] (1) A special paper containing acrylic resin is prepared as a substrate connecting layer, the special paper is a non-woven fabric, and the raw materials of the non-woven fabric include 12% of acrylic resin by weight, and the remaining raw materials and production process are not limited;

[0082] The grammage of the special paper is 45 g / m 2 , the transverse dry tensile force is ≥15 N / 15 mm, and the longitudinal dry tensile force is ≥35 N / 15 mm.

[0083] An impregnated glue film paper is prepared, the impregnated glue solution of the impregnated glue film paper is composed of 70% of urea-formaldehyde resin and 30% of melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated glue film paper is controlled to be 150%.

[0084] The impregnated glue film paper is laid on the substrate connecting layer, and then hot-pressed and compounded by a hot press, with a hot-pressing temperature of 185℃, a unit pressure of 3.5 MPa, and a hot-pressing time of 30 s, to obtain a flexible three-amine paper, which is subjected to thickness testing, and if the thickness is ≤0.2 mm, it is qualified as a decorative layer and is ready for use.

[0085] (2) the two-component polyurethane adhesive is PU-61 produced by Tai'er Chemical Co., Ltd., which comprises A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 4.5:1:0.1.

[0086] The flame-retardant adhesive is prepared by adding the flame retardant into the A glue and then adding the B glue into the mixture, and the prepared flame-retardant adhesive needs to be used within half an hour after preparation.

[0087] (3) pretreatment of the surface of the porous inorganic substrate

[0088] The inorganic substrate is a magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200 kg / m 3 The surface of the inorganic substrate is slightly sanded with a 180-mesh sand belt, and then cleaned and electrostatically dedusted to ensure that the surface of the inorganic substrate is clean and tidy.

[0089] (4) coating of UV paint on the back surface of the inorganic substrate, the coating amount being 20 g / m 2 , irradiation and curing to form a balanced waterproof layer;

[0090] The UV paint is product RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0091] (5) feeding the board to the glue spreading machine through an automatic conveying platform, controlling the feeding speed of the glue spreading machine to be 10% less than the discharging speed, starting to coat the flame-retardant adhesive prepared in step (2) on the front surface of the inorganic substrate, and the glue spreading amount of the flame-retardant adhesive being 75 g / m 2 to form a flame-retardant adhesive layer;

[0092] Then the board is conveyed to a pre-laminating station, the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant adhesive layer, and pre-laminating is performed by rolling, the hardness of the glue roller (Shore A) being 40 degrees, the pressure of the rolling cylinder being 0.5 MPa, and the speed being 8 m / min, the flame-retardant adhesive penetrating into and filling the surface pores of the inorganic substrate;

[0093] (6) the ambient temperature for stacking and storage is greater than or equal to 20℃, and the board should be cold-pressed within 40 min, the unit pressure being 2.0 MPa, and the cold-pressing time being 1.5 h, thereby obtaining the anti-cracking high-flame-retardant flexible triamine veneered inorganic board.

[0094] The anti-cracking high-flame-retardant flexible triamine veneered inorganic board prepared in this embodiment comprises, from top to bottom, a veneer layer, a flame-retardant adhesive layer (0.08 mm), an inorganic substrate (10 mm) and a balanced waterproof layer (0.05 mm).

[0095] The facing layer is formed by hot pressing an impregnated film paper layer (0.08 mm) on the substrate connecting layer (0.1 mm), wherein the impregnated film paper layer is formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0096] The inorganic substrate is a porous cavity structure, and the fire-retardant glue layer extends into the inorganic substrate through the cavities, and after curing, the fire-retardant glue layer completely covers the inorganic substrate and forms glue nails in the cavities, as shown in Figure 1 .

[0097] Example 3

[0098] A manufacturing method of a crack-resistant high-fire-retardant flexible triamine facing inorganic board, comprising the following steps:

[0099] (1) A special paper containing acrylic resin is prepared as a substrate connecting layer, wherein the special paper is a non-woven fabric, and the raw materials of the non-woven fabric include 15% of acrylic resin by weight, and the remaining raw materials and production process are not limited;

[0100] The grammage of the special paper is 55 g / m 2 , the transverse dry tensile force is greater than or equal to 15 N / 15 mm, and the longitudinal dry tensile force is greater than or equal to 35 N / 15 mm.

[0101] An impregnated film paper is prepared, wherein the impregnated glue solution of the impregnated film paper is composed of 80% of urea-formaldehyde resin and 40% of melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated film paper is controlled to be 170%.

[0102] The impregnated film paper is laid on the substrate connecting layer, and then hot pressing and compounding are performed by a hot press, the hot pressing temperature is 190°C, the unit pressure is 4.5 MPa, the hot pressing time is 15 s, a flexible triamine paper is prepared, thickness testing is performed, if the thickness is less than or equal to 0.2 mm, it is qualified, and is used as a facing layer.

[0103] (2) The two-component polyurethane adhesive is a PU-61 product produced by Tai'er Chemical Co., Ltd., which includes A glue and B glue, the fire-retardant agent is a 456 product produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the fire-retardant agent is 4:1:0.1.

[0104] The fire-retardant glue is prepared by using an automatic glue mixing machine, the fire-retardant agent is added into the A glue first, and then the B glue is added for mixing, the fire-retardant glue is prepared, and the fire-retardant glue needs to be used within half an hour after preparation.

[0105] (3) The surface of the porous cavity inorganic substrate is pretreated

[0106] The inorganic substrate is magnesium sulfate board, the moisture content of the magnesium sulfate board is controlled at 10%, and the density is controlled at 1500kg / m 3 The surface of the inorganic substrate is slightly sanded with a 200-mesh sand belt, and then cleaned by sweeping and electrostatic dust removal to ensure that the surface of the inorganic substrate is clean and tidy.

[0107] (4) UV paint is applied to the back of the inorganic substrate, and the coating amount is 30g / m 2 , and irradiation and curing are performed to form a balanced waterproof layer;

[0108] The UV paint is a product of RQ101 produced by Guangdong Riqi New Materials Co., Ltd.

[0109] (5) The board is sent to the glue applicator by an automatic conveying platform, and the feeding speed of the glue applicator is controlled to be 10% less than the discharging speed. The flame-retardant glue prepared in step (2) is applied to the front surface of the inorganic substrate, and the coating amount of the flame-retardant glue is 100g / m 2 , to form a flame-retardant glue layer;

[0110] Then the board is conveyed to a pre-laminating station, and the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant glue layer, and pre-laminated by rolling. The hardness of the glue roller (Shore A) is 45 degrees, the pressure cylinder pressure of the pressure roller is 0.6MPa, and the speed is 9m / min. The flame-retardant glue penetrates and fills the surface pores of the inorganic substrate;

[0111] (6) The ambient temperature for stacking and placing is ≥20℃, and the board is cold pressed within 40min, with a unit pressure of 3.0MPa and a cold pressing time of 1.8h, to obtain the anti-cracking high flame-retardant flexible triamine decorative inorganic board.

[0112] The anti-cracking high flame-retardant flexible triamine decorative inorganic board prepared in this embodiment comprises, from top to bottom, a decorative layer, a flame-retardant glue layer (0.1mm), an inorganic substrate (18mm), and a balanced waterproof layer (0.1mm).

[0113] The decorative layer is formed by hot pressing an impregnated glue film paper layer (0.10mm) on a substrate connecting layer (0.11mm). The impregnated glue film paper layer (0.10mm) is formed by impregnating and wrapping raw paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0114] The inorganic substrate is a porous cavity structure, the flame-retardant glue layer extends into the inorganic substrate through the cavities, and the flame-retardant glue layer completely covers the inorganic substrate and forms glue nails in the cavities, as shown in Figure 1 .

[0115] Example 4

[0116] A manufacturing method of an anti-cracking high flame-retardant flexible triamine decorative inorganic board, comprising the following steps:

[0117] (1)Prepare a special paper containing acrylic resin as a substrate connecting layer, the special paper is a non-woven fabric, the raw material of the non-woven fabric contains 12% of acrylic resin by weight, and the rest of the raw material and production process are not limited;

[0118] The grammage of the special paper is 45g / m 2 , the transverse dry tensile force is ≥15N / 15mm, and the longitudinal dry tensile force is ≥35N / 15mm.

[0119] Prepare an impregnated adhesive film paper, the impregnated adhesive solution of the impregnated adhesive film paper is composed of 70% urea-formaldehyde resin and 30% melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated adhesive film paper is controlled to be 150%.

[0120] Lay the impregnated adhesive film paper on the substrate connecting layer, and then composite by hot pressing machine, hot pressing temperature 185℃, unit pressure 3.5MPa, hot pressing time 30s, to make flexible triamine paper, carry out thickness test, if the thickness ≤0.2mm, it is qualified, as a decorative layer, ready for use.

[0121] (2)The two-component polyurethane adhesive is PU-61 product produced by Taier Chemical Co., Ltd., which includes A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, B glue and flame retardant is 4.5:1:0.1.

[0122] The automatic glue mixing machine is used to mix the flame-retardant adhesive, the flame-retardant agent is first added to the A glue, and then the B glue is added for mixing to make the flame-retardant adhesive, which needs to be used within half an hour after the mixing is completed.

[0123] (3)Pretreatment is performed on the surface of the porous inorganic substrate

[0124] The inorganic substrate is magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200kg / m 3 The surface of the inorganic substrate is lightly sanded with 180 mesh sand belt, and then cleaned and electrostatically dedusted to ensure that the surface of the inorganic substrate is clean and clean.

[0125] (4)UV coating is applied to the back of the inorganic substrate, the coating amount is 20g / m 2 , and the balance waterproof layer is formed by irradiation and curing;

[0126] The UV coating is RQ101 product produced by Guangdong Riqi New Material Co., Ltd.

[0127] (5) The plate is sent to the glue coating machine by the automatic conveying platform, the feeding speed of the glue coating machine is controlled to be 10% less than the discharging speed, the flame-retardant glue prepared in step (2) is started to be coated on the front surface of the inorganic substrate, and the coating amount of the flame-retardant glue is 75 g / m 2 , to form a flame-retardant glue layer;

[0128] Then the plate is conveyed to a pre-laminating station, the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant glue layer, and pre-lamination is performed by rolling, the glue roll hardness (Shore A) is 40 degrees, the pressure cylinder pressure of the pressure roll is 0.5 MPa, and the speed is 8 m / min, the flame-retardant glue penetrates into the surface pores of the inorganic substrate;

[0129] (6) The ambient temperature for stacking is less than 20℃, and the plate is cold pressed when placed for 50 min, the unit pressure is 2.0 MPa, and the cold pressing time is 2.5 h, to obtain the anti-cracking high flame-retardant flexible triamine veneer inorganic plate.

[0130] The anti-cracking high flame-retardant flexible triamine veneer inorganic plate prepared in the embodiment comprises, from top to bottom, a veneer layer, a flame-retardant glue layer (0.08 mm), an inorganic substrate (10 mm), and a balance waterproof layer (0.05 mm).

[0131] The veneer layer is formed by hot pressing an impregnated glue film paper layer on a substrate connecting layer (0.1 mm), and the impregnated glue film paper layer (0.08 mm) is formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0132] The inorganic substrate has a porous cavity structure, the flame-retardant glue layer extends into the inorganic substrate through the cavities, and the flame-retardant glue layer completely covers the inorganic substrate and forms glue nails in the cavities, as shown in Figure 1 .

[0133] Comparative Example 1

[0134] The manufacturing method of the comparative example comprises the following steps:

[0135] (1) An impregnated glue film paper is prepared, the impregnated glue solution of the impregnated glue film paper is composed of 70% urea-formaldehyde resin and 30% melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated glue film paper is controlled to be 150%, which is used as a veneer layer.

[0136] (2) The two-component polyurethane adhesive is a PU-61 product produced by Tai'er Chemical Co., Ltd., which comprises A glue and B glue, the flame retardant is a 456 product produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 4.5:1:0.1.

[0137] The automatic glue mixing machine is used to mix the flame-retardant glue, the flame retardant is first added to the A glue, and then the B glue is added for mixing to prepare the flame-retardant glue, and the flame-retardant glue needs to be used within half an hour after mixing.

[0138] (3) Pre-treating the surface of the porous inorganic substrate

[0139] The inorganic substrate is a magnesium oxysulfate board, and the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200 kg / m 3 The surface of the inorganic substrate is slightly sanded with a 180 mesh sand belt, and then cleaned and electrostatically dusted to ensure that the surface of the inorganic substrate is clean.

[0140] (4) Coating the back of the inorganic substrate with UV paint, the coating amount is 20 g / m 2 , and irradiating and curing to form a balanced waterproof layer;

[0141] The UV paint is a product of model RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0142] (5) The board is sent to the glue coating machine by an automatic conveying platform, the feeding speed of the glue coating machine is controlled to be 10% less than the discharging speed, the flame-retardant glue prepared in step (2) is coated on the front surface of the inorganic substrate, and the coating amount of the flame-retardant glue is 75 g / m 2 to form a flame-retardant glue layer;

[0143] Then the board is conveyed to a pre-laminating station, the impregnated glue film paper of step (1) is laid on the top surface of the flame-retardant glue layer, and pre-laminating is performed by rolling, the hardness of the glue roller (Shore A) is 40 degrees, the pressure of the rolling cylinder is 0.5 MPa, and the speed is 8 m / min, the flame-retardant glue penetrates and fills the surface pores of the inorganic substrate;

[0144] (6) The ambient temperature for stacking and placing is ≥20℃, and the board should be cold pressed within 40 min, the unit pressure for cold pressing is 2.0 MPa, and the cold pressing time is 1.5 h, and the board is prepared.

[0145] The board prepared in the comparative example comprises a decorative layer, a flame-retardant glue layer (0.08 mm), an inorganic substrate (10 mm), and a balanced waterproof layer (0.05 mm) from top to bottom.

[0146] The decorative layer is an impregnated glue film paper, and the impregnated glue film paper (0.08 mm) is formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0147] Comparative Example 2

[0148] The manufacturing method of the comparative example comprises the following steps:

[0149] (1)Prepare a special paper containing acrylic resin as a substrate connecting layer, the special paper is a non-woven fabric, the raw material of the non-woven fabric contains 12% of acrylic resin by weight, and the rest of the raw material and production process are not limited;

[0150] The grammage of the special paper is 45g / m 2 , the transverse dry tensile force is ≥15N / 15mm, and the longitudinal dry tensile force is ≥35N / 15mm.

[0151] Prepare an impregnated adhesive film paper, the impregnated adhesive solution of the impregnated adhesive film paper is composed of 70% urea-formaldehyde resin and 30% melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated adhesive film paper is controlled to be 150%.

[0152] Lay the impregnated adhesive film paper on the substrate connecting layer, and then composite by hot pressing machine, hot pressing temperature 185℃, unit pressure 3.5MPa, hot pressing time 30s, to make flexible triamine paper, thickness test, if the thickness ≤0.2mm is qualified, as a decorative layer, ready for use.

[0153] (2)The two-component polyurethane adhesive is PU-61 product produced by Tai'er Chemical Co., Ltd., which includes A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, B glue and flame retardant is 4.5:1:0.1.

[0154] The flame-retardant adhesive is prepared by using an automatic adhesive mixing machine, the flame-retardant agent is first added to the A glue, and then the B glue is added for mixing to prepare the flame-retardant adhesive, and the flame-retardant adhesive needs to be used within half an hour after preparation.

[0155] (3)Pretreat the surface of the porous inorganic substrate

[0156] The inorganic substrate is magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200kg / m 3 , the surface of the inorganic substrate is cleaned by light sanding treatment with 180 mesh sand belt, and then by sweeping and electrostatic dust removal.

[0157] (4)Coat the back of the inorganic substrate with UV coating, the coating amount is 20g / m 2 , and irradiate and cure to form a balanced waterproof layer;

[0158] The UV coating is RQ101 product produced by Guangdong Riqi New Material Co., Ltd.

[0159] (5) The plate is sent to the glue coating machine by the automatic conveying platform, the feeding speed of the glue coating machine is controlled to be 10% less than the discharging speed, and the flame-retardant sizing agent prepared in step (2) is coated on the front surface of the inorganic substrate, and the coating amount of the flame-retardant sizing agent is 75 g / m 2 , to form a flame-retardant glue layer;

[0160] Then the plate is conveyed to the pre-laminating station, and the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant glue layer.

[0161] (6) The ambient temperature of the stacking environment is greater than or equal to 20°C, and the plate should be cold pressed within 40 minutes, the unit pressure is 2.0 MPa, and the cold pressing time is 1.5 hours, to obtain the plate.

[0162] The plate prepared in the present comparative example comprises, from top to bottom, a decorative layer, a flame-retardant glue layer (0.08 mm), an inorganic substrate (10 mm), and a balance waterproof layer (0.05 mm).

[0163] The decorative layer is formed by hot pressing an impregnated glue film paper layer (0.08 mm) on a substrate connecting layer (0.1 mm), wherein the impregnated glue film paper layer is formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0164] Comparative Example 3

[0165] The manufacturing method of the present comparative example comprises the following steps:

[0166] (1) A special paper containing an acrylic resin is prepared as a substrate connecting layer, wherein the special paper is a non-woven fabric, and the raw materials of the non-woven fabric contain 18% of acrylic resin by weight, and the remaining raw materials and production process are not limited.

[0167] The grammage of the special paper is 45 g / m 2 , the transverse dry tensile force is greater than or equal to 15 N / 15 mm, and the longitudinal dry tensile force is greater than or equal to 35 N / 15 mm.

[0168] An impregnated glue film paper is prepared, wherein the impregnated glue solution of the impregnated glue film paper is composed of 70% of urea-formaldehyde resin and 30% of melamine-formaldehyde resin by weight, and the impregnation amount of the impregnated glue film paper is controlled to be 150%.

[0169] The impregnated glue film paper is laid on the substrate connecting layer, and then hot pressing is performed by a hot press to form a flexible triamine paper, wherein the hot pressing temperature is 185°C, the unit pressure is 3.5 MPa, and the hot pressing time is 30 s.

[0170] (2) the two-component polyurethane adhesive is PU-61 produced by Tai'er Chemical Co., Ltd., which comprises A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 4.5:1:0.1.

[0171] The flame-retardant adhesive is prepared by adding the flame retardant into the A glue and then adding the B glue into the mixture, and the prepared flame-retardant adhesive needs to be used within half an hour after preparation.

[0172] (3) surface pretreatment of the porous inorganic substrate

[0173] The inorganic substrate is a magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200 kg / m 3 The surface of the inorganic substrate is slightly sanded with a 180-mesh sand belt, and then cleaned and electrostatically dedusted to ensure that the surface of the inorganic substrate is clean.

[0174] (4) UV coating is applied to the back surface of the inorganic substrate, the coating amount is 20 g / m 2 , and the coating is cured by irradiation to form a balanced waterproof layer.

[0175] The UV coating is product RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0176] (5) the board is sent to the glue applicator by an automatic conveying platform, the feeding speed of the glue applicator is controlled to be 10% less than the discharging speed, the flame-retardant adhesive prepared in step (2) is applied to the front surface of the inorganic substrate, and the glue application amount of the flame-retardant adhesive is 75 g / m 2 to form a flame-retardant adhesive layer.

[0177] Then the board is conveyed to a pre-laminating station, the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant adhesive layer, and the board is pre-laminated by rolling, the hardness (Shore A) of the glue roller is 40 degrees, the pressure of the rolling cylinder is 0.5 MPa, and the speed is 8 m / min, the flame-retardant adhesive penetrates into the surface pores of the inorganic substrate.

[0178] (6) the ambient temperature for stacking and storage is greater than or equal to 20℃, the board should be cold-pressed within 40 min, the unit pressure for cold-pressing is 2.0 MPa, and the cold-pressing time is 1.5 h, thereby obtaining the board.

[0179] The board prepared in the comparative example comprises, from top to bottom, a decorative layer, a flame-retardant adhesive layer (0.08 mm), an inorganic substrate (10 mm) and a balanced waterproof layer (0.05 mm).

[0180] The facing layer is formed by hot pressing an impregnated film paper layer on the substrate connecting layer (0.1 mm), the impregnated film paper layer (0.08 mm) being formed by impregnating and wrapping base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0181] Comparative Example 4

[0182] The manufacturing method of the present comparative example comprises the following steps:

[0183] (1) A special paper containing acrylic resin is prepared as the substrate connecting layer, the special paper being a non-woven fabric, the raw material of the non-woven fabric containing 12% by weight of acrylic resin, and the rest of the raw material and the production process being not particularly limited;

[0184] The grammage of the special paper is 45 g / m 2 , the transverse dry tensile force is ≥ 15 N / 15 mm, and the longitudinal dry tensile force is ≥ 35 N / 15 mm.

[0185] An impregnated film paper is prepared, the impregnating glue solution of the impregnated film paper being composed of 70% by weight of urea-formaldehyde resin and 30% by weight of melamine-formaldehyde resin, and the impregnation amount of the impregnated film paper being controlled to be 150%.

[0186] The impregnated film paper is laid on the substrate connecting layer, and then hot-pressed and compounded by a hot press to form a flexible triamine paper, the hot-pressing temperature being 185℃, the unit pressure being 3.5 MPa, and the hot-pressing time being 30 s, the thickness of the flexible triamine paper is tested, if the thickness is ≤ 0.2 mm, it is qualified, and the flexible triamine paper is used as the facing layer.

[0187] (2) The two-component polyurethane adhesive is PU-61 product produced by Tai'er Chemical Co., Ltd., which includes A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 4.5:1:0.5.

[0188] The flame-retardant adhesive is prepared by using an automatic glue mixing machine, the flame retardant is first added to the A glue, and then the B glue is added for mixing to prepare the flame-retardant adhesive, and the flame-retardant adhesive needs to be used within half an hour after preparation.

[0189] (3) The surface of the porous inorganic substrate is pretreated

[0190] The inorganic substrate is a magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200 kg / m 3 The surface of the inorganic substrate is lightly sanded with a 180-mesh sand belt, and then cleaned and electrostatically dedusted to ensure that the surface of the inorganic substrate is clean and tidy.

[0191] (4) Coating UV paint on the back of the inorganic substrate, coating amount 20 g / m 2 , irradiation curing, forming a balanced waterproof layer;

[0192] The UV paint is a product of RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0193] (5) The plate is sent to the glue coating machine by an automatic conveying platform, and the feeding speed of the glue coating machine is controlled to be 10% less than the discharging speed. The flame-retardant glue prepared in step (2) is coated on the front surface of the inorganic substrate, and the coating amount of the flame-retardant glue is 75 g / m 2 , forming a flame-retardant glue layer;

[0194] Then the plate is conveyed to a pre-laminating station, and the flexible triamine paper prepared in step (1) is laid on the top surface of the flame-retardant glue layer, and pre-laminated by rolling. The hardness of the glue roller (Shore A) is 40 degrees, the pressure cylinder pressure of the pressure roller is 0.5 MPa, the speed is 8 m / min, and the flame-retardant glue penetrates and fills the surface pores of the inorganic substrate;

[0195] (6) The ambient temperature for stacking and placing is ≥20℃, and the plate should be cold pressed within 40 min, the unit pressure is 2.0 MPa, and the cold pressing time is 1.5 h, thereby obtaining the plate.

[0196] The plate prepared in the present comparative example comprises, from top to bottom, a decorative layer, a flame-retardant glue layer (0.08 mm), an inorganic substrate (10 mm), and a balanced waterproof layer (0.05 mm).

[0197] The decorative layer is formed by hot pressing an impregnated film paper layer on a substrate connecting layer (0.1 mm), and the impregnated film paper layer (0.08 mm) is formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0198] Comparative Example 5

[0199] The manufacturing method of the present comparative example comprises the following steps:

[0200] (1) Producing a high-pressure high-layer plate (HPL) with a thickness of 0.5 mm.

[0201] Laying an impregnated film paper on the high-pressure high-layer plate, and then hot pressing and compounding by a hot press, hot pressing temperature 185℃, unit pressure 3.5 MPa, hot pressing time 30 s, as a decorative layer, and performing thickness testing. If the thickness is ≤0.2 mm, it is qualified and ready for use.

[0202] (2) the two-component polyurethane adhesive is PU-61 produced by Tai'er Chemical Co., Ltd., which comprises A glue and B glue, the flame retardant is product 456 produced by Weihai Huaen Rubber and Plastic New Material Co., Ltd., and the weight ratio of the A glue, the B glue and the flame retardant is 4.5:1:0.1.

[0203] The flame-retardant adhesive is prepared by adding the flame retardant into the A glue and then adding the B glue into the mixture, and the prepared flame-retardant adhesive needs to be used within half an hour after preparation.

[0204] (3) pretreatment of the surface of the porous inorganic substrate

[0205] The inorganic substrate is a magnesium oxysulfate board, the water content of the magnesium oxysulfate board is controlled to be 8%, and the density is controlled to be 1200 kg / m 3 The surface of the inorganic substrate is slightly sanded with a 180-mesh sand belt, and then cleaned and electrostatically dedusted to ensure that the surface of the inorganic substrate is clean.

[0206] (4) coating of UV paint on the back surface of the inorganic substrate, the coating amount being 20 g / m 2 , irradiation and curing to form a balanced waterproof layer;

[0207] The UV paint is product RQ101 produced by Guangdong Riqi New Material Co., Ltd.

[0208] (5) feeding the board to the glue spreading machine through an automatic conveying platform, controlling the feeding speed of the glue spreading machine to be 10% less than the discharging speed, starting to coat the flame-retardant adhesive prepared in step (2) on the front surface of the inorganic substrate, and the glue spreading amount of the flame-retardant adhesive being 75 g / m 2 to form a flame-retardant adhesive layer;

[0209] Then, the board is conveyed to a pre-laminating station, the surface layer prepared in step (1) is laid on the top surface of the flame-retardant adhesive layer, and the surface layer is pre-laminated by rolling, the hardness of the glue roller (Shore A) being 40 degrees, the pressure of the rolling cylinder being 0.5 MPa, and the speed being 8 m / min, so that the flame-retardant adhesive penetrates into the surface pores of the inorganic substrate;

[0210] (6) the ambient temperature for stacking and storage is ≥20℃, and the board should be cold-pressed within 40 min, the unit pressure being 2.0 MPa, and the cold-pressing time being 1.5 h, so that the board is prepared.

[0211] The board prepared in the comparative example comprises, from top to bottom, a surface layer, a flame-retardant adhesive layer (0.08 mm), an inorganic substrate (10 mm) and a balanced waterproof layer (0.05 mm).

[0212] The surface layer is formed by hot pressing an impregnated film paper layer on a high pressure high layer board (0.5 mm), the impregnated film paper layer (0.08 mm) being formed by impregnating and wrapping a base paper with a mixture of urea-formaldehyde resin and melamine-formaldehyde resin.

[0213] Performance test

[0214]

[0215] According to the disclosure and teachings of the above specification, and various embodiments (including all the information concerning the specification) can be modified and altered, and all such modifications and alterations are intended to fall within the scope of the application. In addition, while the specification has described several exemplary embodiments of the application, it is to be understood that equivalents for the exemplary embodiments can exist and are intended to fall within the scope of the application. Equivalents can be determined by those skilled in the art and could be expressed as functions, data structures, and other types of information. Therefore, the specification and drawings are to be regarded as illustrative and not restrictive.

Claims

1. A method for manufacturing a high crack resistant, flexible, high flame resistant, triamine finished inorganic panel, characterized in that It comprises the following steps: (1) Prepare a special paper containing acrylic resin as a substrate connecting layer, lay the impregnated film paper on the substrate connecting layer, and then hot-press composite to make a special flexible triamine paper with a thickness of ≤0.2 mm as a decorative layer, ready for use; the impregnated glue solution of the impregnated film paper contains at least 60-80% urea-formaldehyde resin and 20-40% melamine-formaldehyde resin by weight; the impregnation amount of the impregnated film paper is controlled to be 135-170%; (2) The weight ratio of two-component polyurethane adhesive to flame retardant is 100:1-3, mixed to make a flame-retardant adhesive, ready for use; (3) The surface of the porous inorganic substrate is pretreated; the inorganic substrate is magnesium oxysulfate board or calcium silicate board, the water content of the magnesium oxysulfate board or calcium silicate board is controlled to be 6-10%, and the density is controlled to be 1000-1500 kg / m3; (4) Apply UV paint on the back of the inorganic substrate, irradiate and cure to form a balanced waterproof layer; (5) Apply the flame-retardant adhesive made in step (2) on the front surface of the inorganic substrate to form a flame-retardant adhesive layer, then lay the flexible triamine paper made in step (1) on the top surface of the flame-retardant adhesive layer, and roll to perform pre-bonding, the flame-retardant adhesive at least penetrates into the surface pores of the inorganic substrate; (6) Stack the board made in step (5) and then cold-press composite to obtain a crack-resistant high-flame-retardant flexible triamine decorative inorganic board.

2. The manufacturing method according to claim 1, wherein the special paper is one of non-woven fabric or kraft paper, and the non-woven fabric or kraft paper contains 8-15% acrylic resin by weight.

3. The manufacturing method according to claim 2, wherein the special paper has a grammage of 35-55 g / m2, a transverse dry tensile force of ≥15 N / 15 mm, a longitudinal dry tensile force of ≥35 N / 15 mm, and a thickness controlled within 0.10 mm±0.01 mm.

4. The manufacturing method according to any one of claims 1-3, wherein the hot-pressing of step (1) is performed at a temperature of 175-190°C, a unit pressure of 2.5-4.5 MPa, and a hot-pressing time of 15-50 s.

5. The manufacturing method according to any one of claims 1-3, wherein the UV paint of step (4) has a coating amount of 10-30 g / m2.

6. The manufacturing method according to any one of claims 1-3, wherein the roll process parameters of step (5) are as follows: the glue roll has a Shore A hardness of 35-45 degrees, the pressure cylinder pressure of the pressure roll is 0.4-0.6 MPa, and the speed is 6-9 m / min.

7. The manufacturing method according to any one of claims 1-3, wherein ​ ​ ​ ​ ​ ​ ​ The specific operation of the stacking and placing of step (6) is as follows: when the ambient temperature is greater than or equal to 20°C, the cold pressing should be performed within 40 min, the cold pressing unit pressure is 1.0-3.0 MPa, and the cold pressing time is 1.2-1.8 h; when the ambient temperature is less than 20°C, the cold pressing should be performed within 60 min, the cold pressing unit pressure is 1.0-3.0 MPa, and the cold pressing time is 2.2-2.8 h.

8. A crack resistant, high flame resistant, flexible, triamine finished inorganic panel, characterized in that, The manufacturing method according to any one of claims 1 to 7.

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