A roller blind fabric and a production process thereof

Abstract

The application discloses a roller shutter fabric and a production process thereof. The roller shutter fabric comprises a cloth layer, a bottoming layer, a black coating layer and a surface layer arranged in sequence. A coating formula of the surface layer comprises an acrylate mixture, a dispersing agent, a wetting agent, a filler, a foaming agent, a foam stabilizer, a penetrating agent, a thickening agent, a flame retardant, a cross-linking agent and ammonia water. The flame retardant comprises a modified high-poly ammonium phosphate mixture. The modified high-poly ammonium phosphate mixture is obtained by modifying high-poly ammonium phosphate with silane and then mixing with modified collagen. Finally, the obtained roller shutter fabric has good flame retardant performance and good anti-fracture performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of roller blind fabric, in particular to a roller blind fabric and a production process thereof. BACKGROUND

[0002] In high-latitude areas, the climate is cold, the winter is long and the temperature is low, and the sunshine time is relatively short. Some places may use heating equipment or use open fire to keep warm, which increases the risk of fire. And because the temperature in high-latitude areas is low, the winter temperature in some high-latitude areas can reach minus several tens of degrees, making the roller blind material easy to become brittle. And the wind in high-latitude areas is relatively large, and strong winds can make the roller blind frequently swing and fold, generating a large stress, which can easily cause the roller blind to crack. Therefore, the roller blind used in high-latitude areas needs to have good flame retardant performance and good anti-cracking performance at the same time, so as to ensure that it can gain time for personnel evacuation and fire extinguishing when a fire accident occurs, reduce fire loss, and prolong the service life of the roller blind.

[0003] However, in the prior art, Chinese patent CN114645468A discloses a preparation method of a low-temperature anti-cracking roller blind fabric, which uses a mixed emulsion composed of an acrylate emulsion, an acrylate oligomer emulsion and a polyurethane dispersion emulsion and adds hydroxylated fullerene to improve the low-temperature anti-cracking effect of the roller blind fabric, but it does not have good flame retardant performance. Chinese patent CN119194869A discloses a flame-retardant fiber window curtain fabric, which introduces two flame retardants, nano-silicon dioxide and nano-magnesium hydroxide, to form a synergistic flame-retardant mechanism to achieve flame-retardant effect, but it does not have low-temperature anti-cracking performance.

[0004] In summary, in the existing prior art, there is almost no fabric that has good flame retardant performance and good anti-cracking performance at the same time, which is difficult to meet the use requirements of roller blinds in high-latitude areas. Therefore, it is crucial to provide a roller blind fabric that has good flame retardant performance and good anti-cracking performance at the same time. SUMMARY

[0005] In order to solve the defects of the prior art mentioned above, in a first aspect, the present application provides a roller blind fabric, which comprises a cloth layer, a base layer, a black coating layer and a surface layer arranged in sequence, the coating formula of the surface layer comprises: an acrylate mixture, a dispersing agent, a wetting agent, a filler, a foaming agent, a foam stabilizer, a penetrating agent, a thickening agent, a flame retardant, a crosslinking agent and ammonia water, the flame retardant comprises a modified high-poly ammonium phosphate mixture, and the modified high-poly ammonium phosphate mixture is obtained by modifying high-poly ammonium phosphate with silane and then mixing with modified collagen.

[0006] By adopting the technical scheme, the coating formula of the surface layer comprises a modified high-poly ammonium phosphate mixture, the modified high-poly ammonium phosphate mixture is obtained by modifying high-poly ammonium phosphate with silane and then mixing the modified high-poly ammonium phosphate with modified collagen, the silane can coat the high-poly ammonium phosphate, so that the high-poly ammonium phosphate is not easy to swell when meeting ammonia water, and the influence on the foaming performance is reduced, therefore, the addition of the modified high-poly ammonium phosphate can improve the flame-retardant performance of the roller shutter fabric, and meanwhile, the foaming is not affected. Then, the modified collagen is mixed, the triple helix structure and the cross-linking network of the collagen make the collagen have high stability, excellent tensile resistance and compression resistance, so that the collagen can maintain good bending resistance at low temperature, and the modified collagen can further improve the mechanical performance and the flame-retardant performance. Moreover, the helix structure of the protein of the collagen can make the intermolecular interaction force stronger, so that the strength of the shell film of the foam during foaming is improved, the stability is increased, the influence on the foaming performance is further reduced, the foam is dense, the coating is uniform, and the bending resistance of the roller shutter fabric is further improved. Furthermore, the modified high-poly ammonium phosphate mixture can interact with other additives to obtain a coating with relatively stable properties, so that the coating is uniform and dense during foaming, and can be well penetrated into the fabric, so that the roller shutter fabric obtained finally has good flame-retardant performance and good anti-cracking performance.

[0007] Preferably, the preparation method of the modified high-poly ammonium phosphate mixture comprises the following steps:

[0008] Step S1: after hydrolysis of the first silane coupling agent, the first silane coupling agent is mixed and stirred with high-poly ammonium phosphate in an inert solvent, and then the modified high-poly ammonium phosphate is obtained by filtration and drying;

[0009] Step S2: after hydrolysis of the collagen, the collagen is mixed with phytic acid, then the second silane coupling agent is hydrolyzed and added dropwise into the mixture, and the modified collagen is obtained by drying;

[0010] Step S3: the modified high-poly ammonium phosphate and the modified collagen are uniformly mixed, then the silica sol solution is added and fully mixed, ball milling is performed, and the modified high-poly ammonium phosphate mixture is obtained by drying and crushing.

[0011] By adopting the technical scheme, the ball milling can make the two fully combine without damaging the structure of each other, and the silica sol can enter the gap of the modified high-poly ammonium phosphate and the modified collagen, so that the combination is more firm, and the bending resistance of the roller shutter fabric is further improved.

[0012] Preferably, the first silane coupling agent is 3-aminopropyl triethoxysilane or gamma-mercaptopropyl trimethoxysilane; and the second silane coupling agent is dodecyl triethoxysilane or dodecyl methyl dimethoxysilane.

[0013] By adopting the above technical scheme, the long chain of the second silane coupling agent can further improve the tensile resistance of the collagen, but the long chain has hydrophobic properties, and the hydrophilic group of the first silane coupling agent can reduce the hydrophobicity of the modified high polyphosphate mixture, thereby reducing the influence on foaming.

[0014] Preferably, in step S2, the mass ratio of the collagen to phytic acid is 1:(1-1.5).

[0015] Preferably, in step S2, after the phytic acid is added, the temperature is heated to 30-50 o C, and the second silane coupling agent is added after the reaction under ultrasonic for 1-3 h.

[0016] Preferably, the acrylate mixture comprises a first acrylate dispersion, a second acrylate dispersion, and an acrylate oligomer emulsion, the Tg of the first acrylate dispersion is 20-50℃, and the Tg of the second acrylate dispersion is -50-0℃.

[0017] Preferably, the modulus of the first acrylate dispersion is 15-30 MPa, and the modulus of the second acrylate dispersion is 0.5-3 MPa.

[0018] Preferably, the particle size of the acrylate oligomer emulsion is 40-90 nm, and the molecular weight is 5000-200000.

[0019] By adopting the above technical scheme, the acrylate mixture obtained by mixing the high-Tg acrylate dispersion, the low-Tg acrylate dispersion, and the acrylate oligomer emulsion can ensure a certain stiffness of the roller blind fabric, has better coating performance on other additives, reduces the influence on foaming, and further improves the anti-cracking performance.

[0020] Preferably, the flame retardant further comprises melamine, polyhydric alcohol organic matter, aluminum diethyl phosphinate, and cyclic phosphate.

[0021] Preferably, the coating formula of the surface layer comprises: 2-20 parts of the first acrylate dispersion, 2-15 parts of the second acrylate dispersion, and 1-10 parts of the acrylate oligomer emulsion, 0.1-1 part of the dispersant, 0.1-1 part of the wetting agent, 3-40 parts of the filler, 0.5-3 parts of the foaming agent, 0.1-1 part of the foam stabilizer, 0.1-1 part of the penetrating agent, 0.1-3 parts of the thickening agent, 5-35 parts of the modified high polyphosphate mixture, 2-15 parts of melamine, 0.5-6 parts of polyhydric alcohol organic matter, 2-10 parts of aluminum diethyl phosphinate, 1-6 parts of cyclic phosphate, 0.3-3 parts of the crosslinking agent, and 0.1-3 parts of ammonia.

[0022] In a second aspect, the application provides a production process of a roller blind fabric, comprising the following steps:

[0023] Step 1: waterproof, mildewproof and antibacterial treatment is performed on the cloth layer;

[0024] Step 2: water and white paste are foamed and coated on the cloth layer, and baking, rolling, cooling and rolling are sequentially performed to form a bottom layer;

[0025] Step 3: water and black paste are foamed and coated on the bottom layer, and baking, rolling, cooling and rolling are sequentially performed to form a black coating layer;

[0026] Step 4: the coating obtained according to the coating formula of the surface layer is foamed and coated on the black coating layer, and baking, rolling, cooling and rolling are sequentially performed to form a roller blind fabric.

[0027] Preferably, in steps 2-4, when baking is performed, there are 7 ovens, and the temperatures are sequentially set to 80-100-120-140-140-120-100 o C.

[0028] In summary, the application has the following beneficial effects:

[0029] 1. The roller blind fabric provided by the application has a coating formula of the surface layer including a modified high-poly ammonium phosphate mixture, the modified high-poly ammonium phosphate mixture is obtained by modifying high-poly ammonium phosphate with silane and then mixing with modified collagen, and the modified high-poly ammonium phosphate and the modified collagen can improve the flame retardant performance and the anti-cracking performance of the roller blind fabric.

[0030] 2. The coating formula of the surface layer provided by the application can obtain fine and dense foam when foaming, so that gaps are not easily generated when coating, and thus the roller blind fabric obtained finally has good bending resistance. DETAILED DESCRIPTION

[0031] Preparation Example

[0032] The following is a preparation example of the modified high-poly ammonium phosphate mixture. The collagen used in the following preparation example is commercially available. In order to reduce the cost, fish skin can be used to prepare collagen for use. The preparation method can refer to the existing technology disclosed in the prior art, and will not be described here.

[0033] Preparation Example 1

[0034] Step S1: after complete hydrolysis of 220 g of 3-aminopropyl triethoxysilane, 5 kg of high-poly ammonium phosphate is dispersed in cyclohexane under high-speed stirring, and the 3-aminopropyl triethoxysilane hydrolysate is added while stirring, and the stirring is continued at 50 o C for 5 h, and the modified high-poly ammonium phosphate is obtained after filtration and drying.

[0035] Step S2: After hydrolysis of 1.2 kg of collagen, 1.2 kg of phytic acid was added, heated to 50 o C, reacted for 2 h under ultrasonic, and then 200 g of dodecyl triethoxysilane was hydrolyzed and added dropwise into the mixture for mixing, and the mixture was continuously reacted for 5 h at 50 o C, filtered and dried to obtain the modified collagen.

[0036] Step S3: The modified high polyphosphate ammonium and the modified collagen were uniformly mixed, and then 600 g of silica sol solution (solid content 30%) was added for ball milling for 3 h, and the modified high polyphosphate ammonium mixture was obtained after drying and crushing.

[0037] Preparation Example 2

[0038] Step S1: After complete hydrolysis of 220 g of γ-mercaptopropyl trimethoxysilane, 5 kg of high polyphosphate ammonium was dispersed in cyclohexane under high-speed stirring, and the hydrolysis solution of γ-mercaptopropyl trimethoxysilane was added dropwise while stirring, and the mixture was continuously stirred for 5 h at 50 o C, filtered and dried to obtain the modified high polyphosphate ammonium.

[0039] Step S2: After hydrolysis of 1.2 kg of collagen, 1.8 kg of phytic acid was added, heated to 30 o C, reacted for 3 h under ultrasonic, and then 200 g of dodecyl triethoxysilane was hydrolyzed and added dropwise into the mixture for mixing, and the mixture was continuously reacted for 5 h at 50 o C, filtered and dried to obtain the modified collagen.

[0040] Step S3: The modified high polyphosphate ammonium and the modified collagen were uniformly mixed, and then 600 g of silica sol solution (solid content 30%) was added for ball milling for 3 h, and the modified high polyphosphate ammonium mixture was obtained after drying and crushing.

[0041] Preparation Example 3

[0042] Step S1: After complete hydrolysis of 220 g of 3-aminopropyl triethoxysilane, 5 kg of high polyphosphate ammonium was dispersed in cyclohexane under high-speed stirring, and the hydrolysis solution of 3-aminopropyl triethoxysilane was added dropwise while stirring, and the mixture was continuously stirred for 5 h at 50 o C, filtered and dried to obtain the modified high polyphosphate ammonium.

[0043] Step S2: After hydrolysis of 1.2 kg of collagen, 1.2 kg of phytic acid was added, heated to 50 o C, reacted for 2 h under ultrasonic, and then 200 g of dodecyl triethoxysilane was hydrolyzed and added dropwise into the mixture for mixing, and the mixture was continuously reacted for 5 h at 50 oC, continue to react for 5 h, filter and dry to obtain the modified collagen.

[0044] Step S3: mix the modified high polyphosphoric acid ammonium and the modified collagen uniformly, directly perform ball milling for 3 h, dry and crush to obtain the modified high polyphosphoric acid ammonium mixture.

[0045] Preparation Example 4

[0046] Step S1: after completely hydrolyzing 220 g of 3-aminopropyl triethoxysilane, disperse 5 kg of high polyphosphoric acid ammonium in cyclohexane under high-speed stirring, add the 3-aminopropyl triethoxysilane hydrolysis solution dropwise while stirring, and mix at 50 o C, continue to stir for 5 h, filter and dry to obtain the modified high polyphosphoric acid ammonium.

[0047] Step S2: after hydrolyzing 1.2 kg of collagen, add 1.2 kg of phytic acid, heat to 50 o C, react for 2 h under ultrasonic, then add 200 g of triethoxysilane dropwise to the mixed solution to mix, and mix at 50 o C, continue to react for 5 h, filter and dry to obtain the modified collagen.

[0048] Step S3: mix the modified high polyphosphoric acid ammonium and the modified collagen uniformly, then add 600 g of a silica sol solution (solid content 30%) to continue stirring for 3 h, dry and crush to obtain the modified high polyphosphoric acid ammonium mixture.

[0049] Preparation Example 5

[0050] Step S1: after completely hydrolyzing 220 g of 3-aminopropyl triethoxysilane, disperse 5 kg of high polyphosphoric acid ammonium in cyclohexane under high-speed stirring, add the 3-aminopropyl triethoxysilane hydrolysis solution dropwise while stirring, and mix at 50 o C, continue to stir for 5 h, filter and dry to obtain the modified high polyphosphoric acid ammonium.

[0051] Step S2: after hydrolyzing 1.2 kg of collagen, add 1.2 kg of phytic acid, heat to 50 o C, react for 2 h under ultrasonic, then add 200 g of triethoxysilane dropwise to the mixed solution to mix, and mix at 50 o C, continue to react for 5 h, filter and dry to obtain the modified collagen.

[0052] Step S3: mix the modified high polyphosphoric acid ammonium and the modified collagen uniformly, then add 600 g of a silica sol solution (solid content 30%) to continue stirring for 3 h, dry and crush to obtain the modified high polyphosphoric acid ammonium mixture.

[0053] Preparation Example 6

[0054] Step S1: After 220 g of 3-aminopropyl triethoxysilane was completely hydrolyzed, 5 kg of high-polymer ammonium polyphosphate was dispersed in cyclohexane under high-speed stirring, and the 3-aminopropyl triethoxysilane hydrolysis solution was added dropwise while stirring. The mixture was continuously stirred at 50 o C for 5 h, and then filtered and dried to obtain modified high-polymer ammonium polyphosphate.

[0055] Step S2: After 1.2 kg of collagen was hydrolyzed, 200 g of dodecyl triethoxysilane was hydrolyzed and then added dropwise to the mixture for mixing. The mixture was continuously reacted at 50 o C for 5 h, and then filtered and dried to obtain modified collagen.

[0056] Step S3: The modified high-polymer ammonium polyphosphate and the modified collagen were uniformly mixed, and then 600 g of a silica sol solution (solid content 30%) was added for ball milling for 3 h. After drying and crushing, a modified high-polymer ammonium polyphosphate mixture was obtained.

[0057] Preparation Example 7

[0058] Step S1: After 220 g of 3-aminopropyl triethoxysilane was completely hydrolyzed, 5 kg of high-polymer ammonium polyphosphate was dispersed in cyclohexane under high-speed stirring, and the 3-aminopropyl triethoxysilane hydrolysis solution was added dropwise while stirring. The mixture was continuously stirred at 50 o C for 5 h, and then filtered and dried to obtain modified high-polymer ammonium polyphosphate.

[0059] Step S2: After 1.2 kg of collagen was hydrolyzed, 1 kg of phytic acid was added, heated to 60 o C, and reacted under ultrasonic for 1 h. Then, 200 g of dodecyl triethoxysilane was hydrolyzed and added dropwise to the mixture for mixing. The mixture was continuously reacted at 50 o C for 5 h, and then filtered and dried to obtain modified collagen.

[0060] Step S3: The modified high-polymer ammonium polyphosphate and the modified collagen were uniformly mixed, and then 600 g of a silica sol solution (solid content 30%) was added for ball milling for 3 h. After drying and crushing, a modified high-polymer ammonium polyphosphate mixture was obtained.

[0061] Comparative Preparation Example 1

[0062] 5 kg of high-polymer ammonium polyphosphate and 1.2 kg of collagen were directly mixed and uniformly prepared for use.

[0063] Comparative Preparation Example 2

[0064] After complete hydrolysis of 220 g of 3-aminopropyltriethoxysilane, 5 kg of high polyammonium phosphate is dispersed in cyclohexane under high speed stirring, and the hydrolysis solution of 3-aminopropyltriethoxysilane is added under stirring, and stirring is continued for 5 h at 50 o C, and after filtration and drying, modified high polyammonium phosphate is obtained. In this preparation example, no collagen is added for mixing. Example

[0065] The following example is the production process of the roller blind fabric, which uses a production process similar to the production process disclosed in the Chinese patent CN114645468A applied by our company, including the following steps:

[0066] Step 1: The fabric to be made is normally passed through the shuttle machine and the roller to the water tank, and waterproof and mildew-resistant antibacterial additives are added to the water tank for immersion treatment of the fabric, and then the fabric is stretched and stretched after flatness, high temperature baking, cooling and setting, and the waterproof setting of the original fabric is completed.

[0067] Step 2: Filter the base white paste with a gauze, mix the water and white paste mixture with a foaming machine according to a certain proportion, get a foamy substance, pass the set fabric obtained in step 1 through a coating machine, and set the distance between the coating knife of the coating machine and the fabric surface, i.e. the knife distance; pass the fabric coated with the paste through an oven for high temperature baking, and then pass through a calender for extrusion and cooling to form a white, flat and soft paste layer, and when the front end reaches the rolling machine, the flatness and viscosity of the paste layer must be detected.

[0068] Step 3: Filter the middle layer black paste with a new gauze and mix it with water, and then pass it through a foaming machine for foaming according to a certain proportion, and then evenly coat it on the surface of the first layer of paste in step 2 through a coating knife, and then pass it through high temperature baking, rolling, cooling and rolling operations.

[0069] Step 4: Filter the color paste with a new gauze, and coat the prepared coating formula coffee color paste on the black paste surface in step 3 through a foaming machine according to a certain paste, water and gas foaming ratio, and then pass it through high temperature baking, rolling, cooling and rolling operations.

[0070] In steps 2-4 above, there are 7 ovens for baking, and the temperature is set as 80-100-120-140-140-120-100 o C.

[0071] The roller blind fabrics of the following examples are all made by using the above production process, and the difference lies in the coating formula of the surface layer used in step 4.

[0072] The coating formulation for the top coat used in Step 4 of Example 1 is as follows: 10 parts of the first acrylic dispersion, 10 parts of the second acrylic dispersion, and 5 parts of the acrylic oligomer emulsion, 0.5 parts of the dispersant, 0.5 parts of the wetting agent, 15 parts of the filler which is titanium white, 10 parts of the filler which is kaolin, 2 parts of the foaming agent, 0.5 parts of the foam stabilizer, 0.5 parts of the penetrating agent, 2 parts of the thickening agent, 25 parts of the modified ammonium polyphosphate mixture obtained in Preparation Example 1, 10 parts of the melamine, 3 parts of the polyol organic substance, 5 parts of the aluminum diethyl phosphinate, 3 parts of the cyclic phosphate, 2 parts of the crosslinking agent, and 2 parts of the ammonia.

[0073] The Tg of the first acrylic dispersion is 20-50 °C, and the modulus is 15-30 MPa. The Tg of the second acrylic dispersion is -50-0 °C, and the modulus is 0.5-3 MPa. The particle size of the acrylic oligomer emulsion is 40-90 nm, and the molecular weight is 5000-200000. The titanium white is of the rutile type or the anatase type. The dispersant is a high-molecular modified polymer. The wetting agent is an anionic surfactant with a hydrophilic group smaller than a hydrophobic group, which reduces the interfacial tension. The foaming agent is an octadecyl sulfonic acid ammonia type or a sodium dodecyl sulfate type. The foam stabilizer is an ammonium stearate type foam stabilizer. The penetrating agent is a fatty alcohol polyoxyethylene ether type nonionic surfactant. The thickening agent is an alkali-swellable acrylic copolymer. The polyol organic substance is dipentaerythritol or pentaerythritol. The crosslinking agent is an organic silicon type or a carbodiimide type crosslinking agent.

[0074] The other additives used in the following examples and comparative examples are the same as those listed above, and thus will not be described again in the following examples.

[0075] The coating formulation for the top coat used in Step 4 of Example 2 is as follows: 2 parts of the first acrylic dispersion, 2 parts of the second acrylic dispersion, and 1 part of the acrylic oligomer emulsion, 0.1 parts of the dispersant, 0.1 parts of the wetting agent, 2 parts of the filler which is titanium white, 1 part of the filler which is kaolin, 0.5 parts of the foaming agent, 0.1 parts of the foam stabilizer, 0.1 parts of the penetrating agent, 0.1 parts of the thickening agent, 5 parts of the modified ammonium polyphosphate mixture obtained in Preparation Example 2, 2 parts of the melamine, 0.5 parts of the polyol organic substance, 2 parts of the aluminum diethyl phosphinate, 1 part of the cyclic phosphate, 0.3 parts of the crosslinking agent, and 0.1 parts of the ammonia.

[0076] The coating formulation for the top coat used in Step 4 of Example 3 is as follows: 20 parts of the first acrylic dispersion, 15 parts of the second acrylic dispersion, and 10 parts of the acrylic oligomer emulsion, 1 parts of the dispersant, 1 parts of the wetting agent, 25 parts of the filler which is titanium white, 15 parts of the filler which is kaolin, 3 parts of the foaming agent, 1 parts of the foam stabilizer, 1 parts of the penetrating agent, 3 parts of the thickening agent, 35 parts of the modified ammonium polyphosphate mixture obtained in Preparation Example 3, 15 parts of the melamine, 6 parts of the polyol organic substance, 10 parts of the aluminum diethyl phosphinate, 6 parts of the cyclic phosphate, 3 parts of the crosslinking agent, and 3 parts of the ammonia.

[0077] Example 4: The coating formulation for the topcoat used in Step 4 of Example 4 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, filler titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, modified ammonium polyphosphate mixture from Preparation Example 4 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinking agent 2 parts, and ammonia 2 parts.

[0078] Example 5: The coating formulation for the topcoat used in Step 4 of Example 5 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, filler titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, modified ammonium polyphosphate mixture from Preparation Example 5 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinking agent 2 parts, and ammonia 2 parts.

[0079] Example 6: The coating formulation for the topcoat used in Step 4 of Example 6 was: first acrylic dispersion 30 parts, second acrylic dispersion 1 part, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, filler titanium dioxide 15 parts and kaolin 10 parts, foaming agent 5 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, modified ammonium polyphosphate mixture from Preparation Example 1 40 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinking agent 2 parts, and ammonia 5 parts.

[0080] Example 7: The coating formulation for the topcoat used in Step 4 of Example 7 was: first acrylic dispersion 1 part, second acrylic dispersion 25 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, filler titanium dioxide 15 parts and kaolin 10 parts, foaming agent 0.4 parts, foam stabilizer 0.05 parts, penetrating agent 0.5 parts, thickening agent 2 parts, modified ammonium polyphosphate mixture from Preparation Example 1 4 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinking agent 2 parts, and ammonia 2 parts.

[0081] Example 8: The coating formulation for the topcoat used in Step 4 of Example 8 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrant 0.5 parts, thickener 2 parts, modified ammonium polyphosphate mixture from Preparation Example 1 36 parts, crosslinker 2 parts, and ammonia 2 parts.

[0082] Example 9: The coating formulation for the topcoat used in Step 4 of Example 9 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrant 0.5 parts, thickener 2 parts, modified ammonium polyphosphate mixture from Preparation Example 6 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinker 2 parts, and ammonia 2 parts.

[0083] Example 10: The coating formulation for the topcoat used in Step 4 of Example 10 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrant 0.5 parts, thickener 2 parts, modified ammonium polyphosphate mixture from Preparation Example 7 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinker 2 parts, and ammonia 2 parts.

[0084] Comparative Example 1

[0085] The coating formulation for the topcoat used in Step 4 of Comparative Example 1 was: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts, and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrant 0.5 parts, thickener 2 parts, modified ammonium polyphosphate mixture from Comparative Preparation Example 1 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethylphosphinate 5 parts, cyclic phosphate 3 parts, crosslinker 2 parts, and ammonia 2 parts.

[0086] Comparative Example 2

[0087] The coating formulation used in step 4 of Comparative Example 1 for the face coat is: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, modified ammonium polyphosphate mixture from Comparative Preparation 2 25 parts, melamine 10 parts, polyol organic 3 parts, aluminum diethyl phosphinate 5 parts, cyclic phosphate 3 parts, crosslinking agent 2 parts and ammonia 2 parts.

[0088] Comparative Example 3

[0089] The coating formulation used in step 4 of Comparative Example 3 for the face coat is: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, melamine 20 parts, polyol organic 8 parts, aluminum diethyl phosphinate 10 parts, cyclic phosphate 8 parts, crosslinking agent 2 parts and ammonia 2 parts.

[0090] Comparative Example 4

[0091] The coating formulation used in step 4 of Comparative Example 4 for the face coat is: first acrylic dispersion 10 parts, second acrylic dispersion 10 parts and acrylic oligomer emulsion 5 parts, dispersing agent 0.5 parts, wetting agent 0.5 parts, fillers titanium dioxide 15 parts and kaolin 10 parts, foaming agent 2 parts, foam stabilizer 0.5 parts, penetrating agent 0.5 parts, thickening agent 2 parts, crosslinking agent 2 parts and ammonia 2 parts.

[0092] Performance Testing

[0093] The face materials from Examples 1-10 and Comparative Examples 1-4 above were tested for flame resistance according to the requirements of GB / T 5455, GB / T 5454 and NFPA 701, and were tested for resistance to bending.

[0094] Table 1. Results of flame resistance testing according to the requirements of GB / T 5455 and GB / T 5454 for Examples 1-10 and Comparative Examples 1-4

[0095]

[0096] Table 2. Results of flame resistance testing according to the requirements of NFPA 701 for Examples 1-10 and Comparative Examples 1-4

[0097]

[0098] Table 3. Test results of the bending resistance of the roller blind fabric obtained in Examples 1-10 and Comparative Examples 1-4

[0099]

[0100] It can be seen from the above test results that the roller blind fabric prepared by using the production process disclosed in the present application has good flame retardant performance. In 0 o C, the difference in the anti-fracture performance is not large, but when it is below 0 o C, the difference in the anti-fracture performance is obvious, which can show that the roller blind fabric prepared by using the production process disclosed in the present application has good flame retardant performance and anti-fracture performance at the same time under low temperature conditions.

[0101] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A roller blind fabric, comprising a fabric layer, a base layer, a black coating layer, and a top layer arranged sequentially, characterized in that, The coating formulation of the surface layer includes: an acrylate mixture, a dispersant, a wetting agent, a filler, a foaming agent, a foam stabilizer, a penetrant, a thickener, a flame retardant, a crosslinking agent, and ammonia. The flame retardant includes a modified ammonium polyphosphate mixture, which is obtained by modifying ammonium polyphosphate with silane and then mixing it with modified collagen. The preparation method of the modified ammonium polyphosphate mixture includes the following steps: Step S1: After hydrolyzing the first silane coupling agent, it is mixed and stirred with ammonium polyphosphate in an inert solvent, filtered and dried to obtain modified ammonium polyphosphate; Step S2: After hydrolyzing the collagen, add phytic acid and mix. Then, hydrolyze the second silane coupling agent and add it dropwise to the mixture. After drying, the modified collagen is obtained. Step S3: Mix the modified ammonium polyphosphate and modified collagen evenly, then add silica sol solution and continue to mix thoroughly. After ball milling, dry and pulverize, obtain the modified ammonium polyphosphate mixture. The first silane coupling agent is 3-aminopropyltriethoxysilane or γ-mercaptopropyltrimethoxysilane; the second silane coupling agent is dodecyltriethoxysilane or dodecylmethyldimethoxysilane. The acrylate mixture comprises a first acrylate dispersion, a second acrylate dispersion, and an acrylate oligomer emulsion, wherein the Tg of the first acrylate dispersion is 20~50 °C, and the Tg of the second acrylate dispersion is -50~0 °C. The first acrylate dispersion has a modulus of 15~30 MPa, and the second acrylate dispersion has a modulus of 0.5~3 MPa; The acrylate oligomer emulsion has a particle size of 40-90 nm and a molecular weight of 5000-200000. The coating formulation of the surface layer includes: 2-20 parts of a first acrylate dispersion, 2-15 parts of a second acrylate dispersion, 1-10 parts of an acrylate oligomer emulsion, 0.1-1 parts of a dispersant, 0.1-1 parts of a wetting agent, 3-40 parts of a filler, 0.5-3 parts of a foaming agent, 0.1-1 parts of a foam stabilizer, 0.1-1 parts of a penetrant, 0.1-3 parts of a thickener, 5-35 parts of a modified ammonium polyphosphate mixture, 2-15 parts of melamine, 0.5-6 parts of a polyol organic compound, 2-10 parts of aluminum diethylphosphite, 1-6 parts of a cyclic phosphate ester, 0.3-3 parts of a crosslinking agent, and 0.1-3 parts of ammonia.

2. The roller blind fabric according to claim 1, characterized in that, In step S2, the mass ratio of collagen to phytic acid is 1:(1~1.5).

3. The roller blind fabric according to claim 1, characterized in that, In step S2, after adding phytic acid, the temperature is heated to 30-50 degrees Celsius. o C, after reacting under ultrasound for 1-3 hours, add the second silane coupling agent.

4. The roller blind fabric according to any one of claims 1-3, characterized in that, The flame retardant also includes melamine, polyol organic compounds, aluminum diethylphosphite, and cyclic phosphates.

5. A manufacturing process for a roller blind fabric, characterized in that, Includes the following steps: Step 1: Apply a waterproof, mildew-proof, and antibacterial treatment to the fabric layer; Step 2: After foaming the water and white paste, apply it to the fabric layer, and then bake, roll, cool and roll it to form the base layer; Step 3: After foaming the water and black paste, apply it to the base layer, and then bake, roll, cool and roll it to form the black coating layer. Step 4: After foaming the coating obtained according to the coating formulation of any one of claims 1-4, the coating is applied to the black coating layer, and then baked, rolled, cooled and rolled to form the roller blind fabric.

6. The production process of the roller blind fabric according to claim 5, characterized in that, In steps 2-4, the baking process involves a 7-section oven with temperatures set sequentially as follows: 80-100-120-140-140-120-100. o C.

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