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CN-122013545-A - Manufacturing method and application of PVC flame-retardant coating cloth

CN122013545ACN 122013545 ACN122013545 ACN 122013545ACN-122013545-A

Abstract

The invention provides a manufacturing method and application of PVC flame-retardant coating cloth, and belongs to the technical field of functional coating fabrics. The method comprises the following steps of coating proportioning, base cloth feeding, ironing roller pretreatment, primary coating front and back surfaces, primary coating back surface, secondary high temperature drying, primary coating front surface, tertiary high temperature drying, surface treatment, fourth drying, embossing, cooling, edge cutting and winding, wherein in the coating proportioning step, the used materials comprise PVC paste resin, plasticizing agent, heat stabilizer, synergistic flame retardant, bromine flame retardant, adhesive, auxiliary flame retardant, mildew preventive and dispersing agent. Through scientific optimization of the formula and reasonable improvement of the production process, the product has excellent double-standard B1-level flame retardant property, strong mechanical strength and wide environmental adaptability, and fully meets the use requirements of multiple scenes such as military tents, medical warehouses, exhibitions, sunshades and the like.

Inventors

  • SU JUE
  • Fang Hengbin
  • LU HUIBIN
  • ZHU YAFANG
  • HAO JINHONG
  • Jia Siwen

Assignees

  • 浙江汇锋智造科技有限公司

Dates

Publication Date
20260512
Application Date
20260123

Claims (10)

  1. 1. A method for manufacturing PVC flame-retardant coating cloth is characterized by comprising the following steps of coating ingredients, base cloth feeding, ironing roller pretreatment, primary coating front and back, primary coating back, secondary high-temperature drying, primary coating front, tertiary high-temperature drying, surface treatment, fourth drying, embossing, cooling, edge cutting and winding, wherein in the coating ingredients step, the used materials comprise PVC paste resin, plasticizer, heat stabilizer, synergistic flame retardant, bromine flame retardant, adhesive, auxiliary flame retardant, mildew preventive and dispersing agent; the plasticizer is at least one of DINP, DOP, DOTP, DINP; the auxiliary flame retardant is at least one of aluminum hydroxide, zinc borate, magnesium hydroxide and liquid phosphorus flame retardant; The synergistic flame retardant is at least one of Sb 2 O 3 flame retardant and molybdenum trioxide; the bromine flame retardant is at least one of decabromodiphenyl ethane, bromotriazine and brominated polystyrene; The heat stabilizer is a calcium-zinc stabilizer; in the surface treatment step, the surface treatment agent is at least one of PVDF surface treatment agent, acrylic surface treatment agent, titanium dioxide surface treatment agent and silver surface treatment agent.
  2. 2. The method for producing the PVC flame-retardant coating cloth according to claim 1, wherein the PVC paste resin is 100 parts, the plasticizer is added in an amount of 55-67 parts, the heat stabilizer is added in an amount of 2-5 parts, the synergistic flame retardant is added in an amount of 13-20 parts, the bromine flame retardant is added in an amount of 3-10 parts, and the auxiliary flame retardant is added in an amount of 30-40 parts.
  3. 3. The method for producing the PVC flame-retardant coating cloth according to claim 1, wherein in the front and back side of the bottom coating step, the technological parameters are as follows, the vertical single-sided coating amount of the bottom coating is 180-200g/m2, and the speed of the vehicle is 17+/-1 m/min.
  4. 4. The method for manufacturing the PVC flame-retardant coating cloth according to claim 1, wherein in the first high-temperature drying step, the process parameters are as follows, wherein the drying temperature is 165+/-15 ℃, 175+/-10 ℃ and 185+/-10 ℃ in sequence.
  5. 5. The method for producing the PVC flame-retardant coating cloth according to claim 1, wherein in the back side of the bottom coating step, the technological parameters are as follows, the coating amount of the bottom coating is 500-550g/m2, the pressure of the pinch roller is 80-100bar, and the speed of the vehicle is 17+/-1 m/min.
  6. 6. The method for manufacturing the PVC flame-retardant coating cloth according to claim 1, wherein in the second high-temperature drying step, the process parameters are as follows, and the drying temperature is 180+/-5 ℃ and 185+/-5 ℃ in sequence.
  7. 7. The method for producing the PVC flame-retardant coating cloth according to claim 1, wherein in the step of priming the front surface, the technological parameters are as follows, the surface coating amount is 600-700g/m2, the pinch roller pressure is 75-85bar, and the vehicle speed is 17+/-1 m/min.
  8. 8. The method for manufacturing the PVC flame-retardant coating cloth according to claim 1, wherein in the third high-temperature drying step, the process parameters are as follows, wherein the drying temperature is 140+/-5 ℃, 150+/-5 ℃, 160+/-5 ℃, 170+/-5 ℃, 180+/-5 ℃, 185+/-5 ℃, 195+/-5 ℃ and 200+/-5 ℃ in sequence.
  9. 9. The method for manufacturing the PVC flame-retardant coating cloth according to claim 1, wherein in the surface treatment step, the technological parameters are as follows, the heating temperature is 120+/-5 ℃, 125+/-5 ℃ and 130+/-5 ℃ at 60-mesh surfaces of one knife on the front side and the back side respectively, and the pressure of the pinch roller is 80-100bar.
  10. 10. Use of a PVC flame retardant coating cloth according to any one of claims 1 to 9, characterized in that the PVC flame retardant coating is applied in military tents, medical warehouses, exhibitions, sunshades.

Description

Manufacturing method and application of PVC flame-retardant coating cloth Technical Field The invention belongs to the technical field of functional coated fabrics, and relates to a manufacturing method and application of PVC flame-retardant coated fabric. Background The PVC coating cloth is widely applied to the fields of outdoor facilities, storage space, temporary buildings and the like by virtue of good flexibility, waterproof property, weather resistance and cost advantages, such as military tents, medical warehouses, exhibition venue sunshades and the like, and has continuous and strict requirements on the comprehensive performance of the coating cloth. However, the PVC coating cloth in the prior art still has a plurality of problems to be solved in the practical application process, on one hand, the flame retardant performance of the traditional PVC coating cloth is insufficient, most of the PVC coating cloth can only reach the common flame retardant level, the use requirements of military, medical treatment, public exhibition and other scenes with higher requirements on anti-fire safety are difficult to meet, toxic smoke is easily and rapidly burnt and released in a fire hidden danger environment, the life safety and property safety of personnel are seriously threatened, on the other hand, part of the PVC coating cloth has short plates in mechanical properties, the breaking strength and tearing load in warp and weft directions cannot reach the high-strength use standard, the conditions of breakage, tearing and the like are easy to occur in the outdoor complex environment or long-term use process, the service life of the PVC coating cloth is influenced, in addition, the existing product has defects in special environment adaptability, part of the PVC coating cloth has no mildew resistance, is easy to breed mould in a humid environment, the quality is deteriorated, meanwhile, the cold resistance is poor, the PVC coating cloth is easy to harden and embrittle in a low-temperature environment, and the popularization and application in cold areas are limited. Along with the continuous improvement of the requirements of the related application fields on the safety performance, the mechanical performance and the environmental suitability of materials, the development of the PVC coating cloth with excellent flame retardant performance, high-strength mechanical index, good mildew resistance and cold resistance is urgently needed to meet the actual use requirements of scenes such as military tents, medical warehouses, exhibition sunshades and the like, make up the defects of the prior art, expand the application range of the PVC coating cloth and promote the market competitiveness of the PVC coating cloth. Disclosure of Invention The invention aims at solving the problems in the prior art and provides a manufacturing method and application of PVC flame-retardant coating cloth. The preparation method of the PVC flame-retardant coating cloth comprises the following steps of coating batching, base cloth feeding, ironing roller pretreatment, primary coating front and back surfaces, primary coating back surfaces, secondary high temperature drying, primary coating front surfaces, tertiary high temperature drying, surface treatment, fourth drying, embossing, cooling, edge cutting and winding; in the coating batching step, the used materials comprise PVC paste resin, plasticizing agent, heat stabilizer, synergistic flame retardant, bromine flame retardant, adhesive, auxiliary flame retardant, mildew inhibitor and dispersing agent, wherein the base cloth is warp-knitted cloth which is woven by a warp knitting machine by taking terylene, chinlon, vinylon, polypropylene fiber spun filaments or cotton, hemp and silk blended yarn as raw materials; In the third high-temperature drying step, a multi-stage drying process with temperature increasing is adopted, and in the surface treatment step, a heating mode with temperature increasing is adopted for heating; the plasticizer is at least one of DINP, DOP, DOTP, DINP; the auxiliary flame retardant is at least one of aluminum hydroxide, zinc borate, magnesium hydroxide and liquid phosphorus flame retardant; The synergistic flame retardant is at least one of Sb 2O3 flame retardant and molybdenum trioxide; the bromine flame retardant is at least one of decabromodiphenyl ethane, bromotriazine and brominated polystyrene; The adhesive is at least one of 202, 950, 101 and 6808 type adhesives, The heat stabilizer is a calcium-zinc stabilizer; The mildew preventive is at least one of liquid benzisothiazolinone BBIT-20, organic liquid mildew preventive DINP-5, liquid compound RHA-DM-3 and liquid J-508; The dispersing agent is one of BYK-W961, BYK-207, DK061, DK062 and DK 400; In the surface treatment step, the surface treatment agent is at least one of PVDF surface treatment agent, acrylic surface treatment agent, titanium dioxide surface treatment agent and silver surface treatment age