Pearlescent PVC wear-resistant layer and preparation method thereof

Abstract

The invention discloses a pearlescent PVC wear-resistant layer and a preparation method thereof. The pearlescent PVC wear-resistant layer comprises the following components in parts by weight: 120 parts of polyvinyl chloride (PVC) resin, 35 parts of DOTP plasticizer, 5 parts of 6809T stabilizer and 1 part of pearl powder / tablet. The preparation method comprises the following steps: proportioning the following components in parts by weight: 120 parts of polyvinyl chloride (PVC) resin, 35 parts of DOTP plasticizer, 5 parts of 6809T stabilizer and 1 part of pearl powder / sheet, feeding the materials into a high-speed mixer for mixing according to the ratio, then removing moisture from the mixed polyvinyl chloride PVC resin, DOTP plasticizer, 6809T stabilizer and pearl powder / sheet, then conveying the mixture into a low-speed mixer for mixing, and finally carrying out high-speed extrusion molding. The pearlescent PVC wear-resistant layer is prepared by the following steps: continuously extruding by using a screw rod, conveying to an extrusion mold, and finally enabling the extruded material to sequentially pass through a mold passing head, a traction roller, an embossing roller, a warm smelting roller, a shaping roller, a cooling roller, a coiling machine and a cutting machine to obtain the pearlescent PVC wear-resistant layer, so that the wear-resistant effect of the PVC wear-resistant layer is improved, and the pearlescent PVC wear-resistant layer can resist wear and scratches in daily life.

Description

Technical Field

[0001] The invention relates to the technical field of PVC wear-resistant layer preparation, in particular to a pearlescent PVC wear-resistant layer and a preparation method thereof. Background Art

[0002] With the continuous development of the global construction industry and the improvement of people's requirements for floor decoration, plastic flooring is increasingly widely used in commercial fields such as shopping malls, hotels, and office buildings. It is favored by owners and designers due to its durability, easy cleaning, long service life, and low maintenance cost. Compared with traditional plastic flooring, the surface of the pearlescent PVC wear-resistant layer looks more advanced, beautiful, and gives people a high-end and superior feeling. With the pearlescent material, the reflection of the pearlescent material under light is more dazzling, which is worthy of promotion and use. At the same time, it also has the stain resistance and scratch resistance of traditional PVC flooring. Therefore, the pearlescent PVC wear-resistant layer and its preparation method are needed in the production process of the wear-resistant layer.

[0003] The inventors found that there are at least the following problems in the prior art that have not been solved: 1. The existing PVC wear-resistant layer has poor wear resistance, is not convenient to resist wear and scratches in daily life, and has no good processing performance; 2. The existing PVC wear-resistant layer is monotonous in color and has poor texture in daily use, and is not suitable for a variety of decorative styles; 3. The residual chemical substances in the existing PVC wear-resistant layer are not completely volatilized after production, which will cause harm to the user's body after long-term use, thereby reducing the safety of the use of the PVC wear-resistant layer. To this end, the present invention designs a pearlescent PVC wear-resistant layer and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a pearlescent PVC wear-resistant layer and a preparation method thereof, so as to solve the problems mentioned in the above background technology that the existing PVC wear-resistant layer has poor wear-resistant effect, is not convenient to resist wear and scratches in daily life, has no good processing performance, is not convenient in daily use, has monotonous color, poor texture, is not suitable for a variety of decorative styles, and the residual chemical substances in the existing PVC wear-resistant layer after production are not completely volatilized, which will cause harm to the user's body after long-term use, thereby reducing the safety of the use of the PVC wear-resistant layer. To this end, the present invention designs a pearlescent PVC wear-resistant layer and a preparation method thereof.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a pearlescent PVC wear-resistant layer, the main components of which are:

[0006] Polyvinyl chloride (PVC) resin: 80-120 parts;

[0007] DOTP plasticizer: 20-35 parts;

[0008] 6809T stabilizer: 2-5 parts;

[0009] Pearlescent powder / flakes: 1-3 portions.

[0010] Preferably, the weight ratio of each component of the pearlescent PVC wear-resistant layer A is: polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 3 parts.

[0011] Preferably, the weight ratio of each component of the pearlescent PVC wear-resistant layer B is: polyvinyl chloride (PVC) resin: 100 parts, DOTP plasticizer: 25 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 2 parts.

[0012] Preferably, the weight ratio of the components of the pearlescent PVC wear-resistant layer C is: polyvinyl chloride (PVC) resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearlescent powder / sheet: 1 part.

[0013] Preferably, the DOTP plasticizer is a plasticizer with excellent performance, and is formulated according to the wear resistance requirements of the PVC wear-resistant layer with different requirements.

[0014] Preferably, the pearlescent powder / flakes are an optical effect pigment that can present a metallic luster.

[0015] A method for preparing a pearlescent PVC wear-resistant layer, the preparation method comprising the following steps:

[0016] S1. Raw material preparation;

[0017] First purchase the raw materials, then inspect and clean the instruments and equipment.

[0018] S2, then mix the ingredients:

[0019] Prepare 80 parts of polyvinyl chloride (PVC) resin, 20 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 3 parts of pearl powder / piece, then prepare 100 parts of polyvinyl chloride (PVC) resin, 25 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 2 parts of pearl powder / piece, then prepare 120 parts of polyvinyl chloride (PVC) resin, 35 parts of DOTP plasticizer, 5 parts of 6809T stabilizer, and 1 part of pearl powder / piece for standby use;

[0020] S3, then mix:

[0021] The polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces are mixed in a high-speed mixer according to a certain proportion, and then the water content of the mixed polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces is removed.

[0022] S4, then the mixed material is conveyed to a low mixer for mixing, and then the mixed material is conveyed to an extrusion filter for extrusion.

[0023] S5. Finally, the extruded material is passed through a die head, a traction roller, an embossing roller, a warming roller, a shaping roller, a cooling roller, a winder, and a cutting machine in sequence to obtain a pearlescent PVC wear-resistant layer.

[0024] Preferably, the equation for the degree of melting of the mixture is m=1-(o2u2)m, wherein o2 is the concentration variance of different components in the material, u2 is the mean concentration of different components in the material, and the larger the value of m, the more uniform the material mixing; the smaller the value of m, the more uneven the material mixing.

[0025] Preferably, the mixture melt index equation is: MFR(o, mnom)=tref, mt, wherein o is the test temperature, mnom is the nominal load, m is the average mass of the cut, ftref is the reference time, and t is the time interval of the cut.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. When the staff needs the pearlescent PVC wear-resistant layer to be used in a high-wear-resistant scene, the weight ratio of each component is as follows: polyvinyl chloride PVC resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearlescent powder / flakes: 1 part. The materials are mixed in a high-mixer according to the proportion, and then the mixed polyvinyl chloride PVC resin, DOTP plasticizer, 6809T stabilizer, and pearlescent powder / flakes are dehydrated. The mixed materials are then transported to a low-mixer for mixing, and then continuously extruded by a screw and transported to an extrusion die. Finally, the extruded materials are passed through a die head, a traction roller, an embossing roller, a warming roller, a shaping roller, a cooling roller, a winder, and a cutting machine in turn to obtain a pearlescent PVC wear-resistant layer, thereby improving the wear resistance of the PVC wear-resistant layer and being able to resist wear and scratches in daily life.

[0028] 2. When the staff needs to use the pearlescent PVC wear-resistant layer in a variety of decorative styles, the weight ratio of each component is as follows: polyvinyl chloride PVC resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearlescent powder / flakes: 3 parts, thereby improving the color diversity of the PVC wear-resistant layer in daily use, with a good texture, suitable for a variety of decorative styles.

[0029] 3. The mixed polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer, and pearl powder / piece are used to remove moisture to avoid bubbles in the subsequent finished product, so that the mixed material will not have bubbles during use, and the bubbles inside the pearlescent PVC wear-resistant layer are prevented from causing volatile damage to the body of the user, thereby improving the safety of the PVC wear-resistant layer. Then, a variety of roller pressing methods are used for roller pressing processing, thereby improving the processing effect of the pearlescent PVC wear-resistant layer. To this end, the present invention designs a pearlescent PVC wear-resistant layer and a preparation method thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a graph showing the weight percentage of each component of the pearlescent PVC wear-resistant layer A of the present invention;

[0031] Figure 2 This is a graph showing the weight percentage of each component of the pearlescent PVC wear-resistant layer B of the present invention;

[0032] Figure 3 This is a graph showing the weight percentage of each component of the pearlescent PVC wear-resistant layer C of the present invention;

[0033] Figure 4 It is a production flow chart of the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-4 The present invention provides a technical solution: a pearlescent PVC wear-resistant layer.

[0036] Embodiment 1:

[0037] The main ingredients are:

[0038] Polyvinyl chloride (PVC) resin: 80-120 parts;

[0039] DOTP plasticizer: 20-35 parts;

[0040] 6809T stabilizer: 2-5 parts;

[0041] Pearlescent powder / flakes: 1-3 portions.

[0042] In this embodiment, the weight ratio of each component of the pearlescent PVC wear-resistant layer A is: polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 3 parts.

[0043] In this embodiment, the weight ratio of each component of the pearlescent PVC wear-resistant layer B is: polyvinyl chloride (PVC) resin: 100 parts, DOTP plasticizer: 25 parts, 6809T stabilizer: 3 parts, pearl powder / sheet: 2 parts.

[0044] In this embodiment, the weight ratio of each component of the pearlescent PVC wear-resistant layer C is: polyvinyl chloride (PVC) resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearl powder / sheet: 1 part.

[0045] In this embodiment, DOTP plasticizer is a plasticizer with excellent performance, and is formulated according to the wear resistance requirements of the PVC wear-resistant layer with different requirements.

[0046] In this embodiment, the pearlescent powder / flakes are an optical effect pigment that can present a metallic luster.

[0047] The preparation method of this embodiment comprises the following steps:

[0048] S1. Raw material preparation;

[0049] First purchase the raw materials, then inspect and clean the instruments and equipment.

[0050] S2, then mix the ingredients:

[0051] Prepare 80 parts of polyvinyl chloride (PVC) resin, 20 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 3 parts of pearl powder / piece. Then prepare 100 parts of polyvinyl chloride (PVC) resin, 25 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 2 parts of pearl powder / piece. Then prepare 120 parts of polyvinyl chloride (PVC) resin, 35 parts of DOTP plasticizer, 5 parts of 6809T stabilizer, and 1 part of pearl powder / piece for standby use. The material ratio can be made according to different needs. When the staff needs the pearlescent PVC wear-resistant layer to be used in a high wear-resistant scene, the weight ratio of each component is as follows: Polyvinyl chloride (PVC) resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearl powder / flake: 1 part are mixed to improve the wear resistance of the PVC wear-resistant layer and resist the wear and scratches in daily life. When the staff needs to use the pearlescent PVC wear-resistant layer in a variety of decorative styles, the weight ratio of each component is as follows: polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearl powder / flake: 3 parts, thus improving the color diversity of the PVC wear-resistant layer in daily use, with good texture, suitable for a variety of decorative styles;

[0052] S3, then mix:

[0053] The polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces are mixed in a high-speed mixer according to a certain proportion. The operating temperature inside the high-speed mixer is 90±15°C. Then, the mixed polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces are dehydrated to avoid bubbles in the subsequent finished product. The mixed material will not contain bubbles during use, and the bubbles inside the pearl PVC wear-resistant layer will not cause volatilization damage to the body of the user, thereby improving the safety of the PVC wear-resistant layer.

[0054] S4. Then the mixed material is conveyed to a low mixer for mixing. The operating temperature inside the low mixer is 50±10℃, which can prevent the sudden drop in temperature from causing water absorption, moisture resorption, solidification and static electricity. The mixed material is then conveyed to an extrusion filter for extrusion. The operating temperature inside the extrusion filter is 200±10℃. The purpose is to melt and plasticize the mixed material into a uniform melt, realize the transition from a glassy state to a viscous flow state, and establish a certain pressure in the process. The mixed material is continuously extruded by a screw and conveyed to an extrusion die. The operating temperature inside the first stage is 200±10℃, the operating temperature inside the second stage is 200±10℃, and the operating temperature inside the third stage is 200±10℃.

[0055] S5. Finally, the extruded material is passed through the die head, the temperature inside the die head is 200±10℃, the traction roller, the embossing roller, the warming roller, the shaping roller, the cooling roller, the winder, and the cutting machine in turn to obtain the pearlescent PVC wear-resistant layer. The pearlescent PVC wear-resistant layer can be processed by a variety of roller pressing methods, thereby improving the processing effect of the pearlescent PVC wear-resistant layer. Figure 1 , Figure 2 , Figure 3 and Figure 4 .

[0056] In this embodiment, the equation for the degree of melting of the mixture is m=1-(o2u2)m, wherein o2 is the concentration variance of different components in the material, and u2 is the mean concentration of different components in the material. The larger the value of m, the more uniform the material mixing; the smaller the value of m, the more uneven the material mixing.

[0057] In this embodiment, the mixture melt index equation is: MFR(o, mnom)=tref, mt, wherein o is the test temperature, mnom is the nominal load, m is the average mass of the cut-off, ftref is the reference time, and t is the time interval of the cut-off.

[0058] Embodiment 2:

[0059] The difference from the first embodiment is that:

[0060] The main ingredients are:

[0061] Polyvinyl chloride (PVC) resin: 80-120 parts;

[0062] DOTP plasticizer: 20-35 parts;

[0063] 6809T stabilizer: 2-5 parts;

[0064] Pearlescent powder / flakes: 1-3 portions.

[0065] In this embodiment, the weight ratio of each component of the pearlescent PVC wear-resistant layer A is: polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 3 parts.

[0066] In this embodiment, DOTP plasticizer is a plasticizer with excellent performance, and is formulated according to the wear resistance requirements of the PVC wear-resistant layer with different requirements.

[0067] In this embodiment, the pearlescent powder / flakes are an optical effect pigment that can present a metallic luster.

[0068] The purification method of this embodiment comprises the following steps:

[0069] S1. First, purchase the raw materials;

[0070] S2, then mix the ingredients:

[0071] Polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearl powder / sheet: 3 parts for standby use;

[0072] S3, then mix:

[0073] A certain amount of polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer, and pearl powder / pieces are fed into a high-speed mixer for mixing.

[0074] S4, then the mixed material is conveyed to a low mixer for mixing.

[0075] S5, finally through the die head, traction roller, embossing roller, winder, cutting machine to obtain the pearlescent PVC wear-resistant layer, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 .

[0076] Embodiment three:

[0077] The difference between the first embodiment and the second embodiment is that:

[0078] The main ingredients are:

[0079] Polyvinyl chloride (PVC) resin: 80-120 parts;

[0080] DOTP plasticizer: 20-35 parts;

[0081] 6809T stabilizer: 2-5 parts;

[0082] Pearlescent powder / flakes: 1-3 portions.

[0083] In this embodiment, the weight ratio of each component of the pearlescent PVC wear-resistant layer B is: polyvinyl chloride (PVC) resin: 100 parts, DOTP plasticizer: 25 parts, 6809T stabilizer: 3 parts, pearl powder / sheet: 2 parts.

[0084] The preparation method of this embodiment comprises the following steps:

[0085] S1. First, purchase the raw materials;

[0086] S2, then mix the ingredients:

[0087] Polyvinyl chloride (PVC) resin: 100 parts, DOTP plasticizer: 25 parts, 6809T stabilizer: 3 parts, pearl powder / sheet: 2 parts for standby use;

[0088] S3, then mix:

[0089] A certain amount of polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer, and pearl powder / pieces are fed into a high-speed mixer for mixing.

[0090] S4, finally through the die head, traction roller, embossing roller, winder, cutting machine to obtain the pearlescent PVC wear-resistant layer, reference Figure 1 , Figure 2 , Figure 3 and Figure 4 .

[0091] In summary: By reference Figure 1 , Figure 2 , Figure 3 and Figure 4By comparing Example 1, Example 2 and Example 3, it is concluded that the present invention proposes a pearlescent PVC wear-resistant layer and a preparation method thereof, and the material ratio can be adjusted according to different needs. When the staff needs the pearlescent PVC wear-resistant layer to be used in a high wear-resistant scene, the weight ratio of each component is as follows: polyvinyl chloride (PVC) resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearlescent powder / sheet: 1 part, thereby improving the wear resistance of the PVC wear-resistant layer, and being able to resist wear and scratches in daily life. When the staff needs the pearlescent PVC wear-resistant layer to be used in a variety of decorative styles, the weight ratio of each component is as follows: polyvinyl chloride (PVC) resin: 80 parts , DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearl powder / flakes: 3 parts are mixed, thereby improving the color diversity of the PVC wear-resistant layer in daily use, with good texture, suitable for a variety of decorative styles, and then the mixed polyvinyl chloride PVC resin, DOTP plasticizer, 6809T stabilizer, pearl powder / flakes are used to remove moisture to avoid bubbles in subsequent finished products, so that there will be no bubbles in the mixed mixture during use, and the bubbles inside the pearlescent PVC wear-resistant layer are prevented from causing volatile damage to the body of the user, thereby improving the safety of the PVC wear-resistant layer, and then a variety of roller pressing methods are used for roller pressing processing, thereby improving the processing effect of the pearlescent PVC wear-resistant layer.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, technique, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, technique, article or equipment.

[0093] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pearlescent PVC wear-resistant layer, characterized in that: The main ingredients are: Polyvinyl chloride (PVC) resin: 80-120 parts; DOTP plasticizer: 20-35 parts; 6809T stabilizer: 2-5 parts; Pearlescent powder / flakes: 1-3 portions.

2. The pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The weight ratio of the components of the pearlescent PVC wear-resistant layer A is: polyvinyl chloride (PVC) resin: 80 parts, DOTP plasticizer: 20 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 3 parts.

3. The pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The weight ratio of the components of the pearlescent PVC wear-resistant layer B is: polyvinyl chloride (PVC) resin: 100 parts, DOTP plasticizer: 25 parts, 6809T stabilizer: 3 parts, pearlescent powder / sheet: 2 parts.

4. The pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The weight ratio of the components of the pearlescent PVC wear-resistant layer C is: polyvinyl chloride (PVC) resin: 120 parts, DOTP plasticizer: 35 parts, 6809T stabilizer: 5 parts, pearlescent powder / sheet: 1 part.

5. The pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The DOTP plasticizer is a plasticizer with excellent performance and is formulated according to the wear resistance requirements of the PVC wear-resistant layer with different requirements.

6. The pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The pearlescent powder / flakes are an optical effect pigment that can present a metallic luster.

7. A method for preparing a pearlescent PVC wear-resistant layer, based on the pearlescent PVC wear-resistant layer according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Raw material preparation; First purchase the raw materials, then inspect and clean the instruments and equipment. S2, then mix the ingredients: Prepare 80 parts of polyvinyl chloride (PVC) resin, 20 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 3 parts of pearl powder / piece, then prepare 100 parts of polyvinyl chloride (PVC) resin, 25 parts of DOTP plasticizer, 3 parts of 6809T stabilizer, and 2 parts of pearl powder / piece, then prepare 120 parts of polyvinyl chloride (PVC) resin, 35 parts of DOTP plasticizer, 5 parts of 6809T stabilizer, and 1 part of pearl powder / piece for standby use; S3, then mix: The polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces are mixed in a high-speed mixer according to a certain proportion, and then the water content of the mixed polyvinyl chloride (PVC) resin, DOTP plasticizer, 6809T stabilizer and pearl powder / pieces is removed. S4, then the mixed material is conveyed to a low mixer for mixing, and then the mixed material is conveyed to an extrusion filter for extrusion. S5. Finally, the extruded material is passed through a die head, a traction roller, an embossing roller, a warming roller, a shaping roller, a cooling roller, a winder, and a cutting machine in sequence to obtain a pearlescent PVC wear-resistant layer.

8. The method for preparing a pearlescent PVC wear-resistant layer according to claim 1, characterized in that: The equation for the degree of melting of the mixture is m=1-(o2u2)m, where o2 is the concentration variance of different components in the material, and u2 is the mean concentration of different components in the material. The larger the value of m, the more uniform the material mixing; the smaller the value of m, the more uneven the material mixing.

9. The method for preparing a pearlescent PVC wear-resistant layer according to claim 1, characterized in that: Mixing melt index equation: MFR (o, mnom) = tref, mt, where: o is the test temperature, mnom is the nominal load, m is the mean mass cut off, ftref is the reference time, and t is the time interval between cut offs.

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