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Flame-retardant PVC (polyvinyl chloride) sunlight film and preparation method thereof

A technology of PVC resin and sunshine, which is applied in the direction of building components, textiles and papermaking, etc., can solve the problems that the synergistic flame-retardant effect of antimony trioxide cannot be fully exerted, high production cost, and cumbersome, etc., and achieve the preparation method and product environmental protection , high mechanical strength, not easy to peel off

Inactive Publication Date: 2018-09-28
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This preparation method needs to soak the base material with the polymer solution first, and then scrape the polymer solution onto the surface of the base cloth, which is very cumbersome.
Simultaneously, the solvents used in this method are xylene, methyl ethyl ketone, toluene, etc., all of which have great harm to the environment and human health, and the production cost is too high, which is not conducive to the development of industrialization
In addition, the flame retardant used in this application is antimony trioxide, which is a synergistic flame retardant and must be synergistically flame-retardant with chlorine-containing polymers to play its role. The plasticizer is a phosphate plasticizer, and this operation cannot give full play to the synergistic flame retardant effect of antimony trioxide

Method used

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  • Flame-retardant PVC (polyvinyl chloride) sunlight film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of flame-retardant PVC sunlight film, comprising the following preparation steps:

[0036] Set the barrel temperature and scraper temperature of the twin-screw extruder; Among them, the temperature of the first zone: 75°C; the temperature of the second zone: 130°C; the temperature of the third zone: 150°C; the temperature of the fourth zone: 155°C; the temperature of the fifth zone: 160 ℃; temperature in zone six: 160°C; temperature in zone seven: 165°C; temperature of scraper: 165°C, fix the paper tube of the base fabric layer (PET woven fabric with a grammage of 80g / ㎡) on the shaft, and place the base fabric After installing along the guide roller and friction roller, start feeding cloth at a speed of 5m / min.

[0037]In parts by mass, uniformly mixed PVC resin (polymerization degree: 1200): 100kg, dibutyl phthalate (DBP): 3kg, chlorinated paraffin 42: 5kg, calcium zinc heat stabilizer: 2kg, three Antimony oxide: 7kg of the mixture is placed in th...

Embodiment 2

[0040] A preparation method of flame-retardant PVC sunlight film, comprising the following preparation steps:

[0041] Set the barrel temperature and scraper temperature of the twin-screw extruder; Among them, the temperature of the first zone: 75°C; the temperature of the second zone: 130°C; the temperature of the third zone: 150°C; the temperature of the fourth zone: 155°C; the temperature of the fifth zone: 160 ℃; temperature in zone six: 160°C; temperature in zone seven: 165°C; temperature of scraper: 165°C, fix the paper tube of the base fabric layer (PET woven fabric with a grammage of 80g / ㎡) on the shaft, and place the base fabric After installing along the guide roller and friction roller, start feeding cloth at a speed of 5m / min.

[0042] In parts by mass, uniformly mixed PVC resin (polymerization degree: 1200): 100kg, dibutyl phthalate (DBP): 3kg, chlorinated paraffin 42: 5kg, calcium zinc heat stabilizer: 2kg, three Antimony oxide: 7kg of the mixture is placed in t...

Embodiment 3

[0045] A preparation method of flame-retardant PVC sunlight film, comprising the following preparation steps:

[0046] Set the barrel temperature and scraper temperature of the twin-screw extruder; Among them, the temperature of the first zone: 75°C; the temperature of the second zone: 130°C; the temperature of the third zone: 150°C; the temperature of the fourth zone: 155°C; the temperature of the fifth zone: 160 ℃; temperature in zone six: 160°C; temperature in zone seven: 165°C; temperature of scraper: 165°C, fix the paper tube of the base fabric layer (PET woven fabric with a grammage of 80g / ㎡) on the shaft, and place the base fabric After installing along the guide roller and friction roller, start feeding cloth at a speed of 5m / min.

[0047] In parts by mass, uniformly mixed PVC resin (polymerization degree: 1200): 100kg, dibutyl phthalate (DBP): 3kg, chlorinated paraffin 42: 5kg, calcium zinc heat stabilizer: 2kg, three Antimony oxide: 7kg of the mixture is placed in t...

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Abstract

The invention relates to a flame-retardant PVC (polyvinyl chloride) sunlight film and a preparation method thereof, and belongs to the technical field of chemistry and chemical products. The preparation method comprises the following steps: 1) setting amachine barrel temperature and a scraper temperature of a double-screw extruder; 2) taking an uniformly mixed mixture which comprises the followingcomponents in parts by weight: 100 parts of PVC resin, 3-10 parts of a plasticizer, 2-8 parts of a heat stabilizer, and 2-10 parts of a flame retardant, placing the mixture in a machine barrel of thedouble-screw extruder of step 1), and melting and extruding to obtain a resin melt; and blade-coating two surfaces of a base fabric layer with the resin melt by adopting a doctor blade, so as to forma base fabric coated with a resin melt layer; 3) subjecting the base fabric coated with the resin melt layer of step 2) to water-cooling solidification, trimming, and winding to prepare and obtain the flame-retardant PVC sunlight film. By adopting a method of directly impregnating a PVC resin melt with a substrate, the use of a highly toxic solvent or glue is avoided, and the flame retardance ofan obtained product can reach a limiting oxygen index of 32.4%.

Description

technical field [0001] The invention relates to a PVC flame-retardant film, which belongs to the technical field of chemical and chemical products, in particular to a flame-retardant PVC sunlight film and a preparation method thereof. Background technique [0002] PVC film belongs to the plastic with the second largest output among the five general-purpose resins in my country. Because of its advantages such as non-combustibility, corrosion resistance, insulation, and wear resistance, as well as simple preparation process, rich raw materials, and low price, it is popular among merchants and consumers. sought after. The flame retardancy of PVC film is due to the fact that HCl gas can be generated during the combustion process, which can combine with the water produced by combustion to produce hydrochloric acid gas, which has a flame retardant effect. The limiting oxygen index of PVC material can reach about 50%, so PVC is used It should be widely used in the production and ap...

Claims

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Application Information

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IPC IPC(8): D06N3/06D06N3/00C08L27/06C08L91/06C08K5/12
CPCC08L27/06C08L2201/02D06N3/0006D06N3/0034D06N3/0036D06N3/0038D06N3/0061D06N3/0063D06N3/0077D06N3/0088D06N3/06D06N2209/067D06N2209/0861D06N2209/103D06N2211/06D06N2211/125C08L91/06C08K5/12C08K3/2279
Inventor 王栋梅涛赵青华李沐芳毛勤岑牛应买蒋海青
Owner WUHAN TEXTILE UNIV
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