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High-temperature resistant flame-retardant environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof

A modified material and high temperature resistant technology, applied in the field of high temperature resistant flame retardant and environmentally friendly PVC modified materials and their preparation, can solve the problems of human health hazards, poor thermal stability, poor fluidity, etc., and achieve a wide range of applications and electrical insulation properties. Good results with excellent surface finish

Active Publication Date: 2013-02-06
广东祺龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has light weight, high strength, insulation, flame retardancy, corrosion resistance, It has the advantages of excellent comprehensive performance, low price and wide source of raw materials; but it also has the following disadvantages: 1. Poor toughness, easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. Large, the lower limit of general PVC products is -15°C, and the lower limit of soft PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C. ...

Method used

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  • High-temperature resistant flame-retardant environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Weigh 80Kg of raw material SG-5 PVC resin, 15Kg of light calcium carbonate, 25Kg of dioctyl terephthalate, 2Kg of antimony trioxide, 3Kg of aluminum hydroxide, 2Kg of calcium-zinc composite stabilizer, and the chlorine content is 25%. chlorinated polyethylene 6Kg, stearic acid 0.5Kg, polyethylene wax 0.5Kg, tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol 0.1Kg mixed; The final raw materials are put into a high-speed blender and stirred at 100°C for 25 minutes; the stirred raw materials are extruded and granulated through a twin-screw extruder, and then cut and air-cooled to obtain high-temperature-resistant, flame-retardant and environmentally friendly PVC Modified material; the screw temperature of the twin-screw extruder is: 138°C for the first stage, 135°C for the second stage, 135°C for the third stage, 132°C for the fourth stage and 130°C for the fifth stage. The mechanical and physical properties of the high-temperature-resistant, flame...

Embodiment 2

[0053] Weigh raw material SG-7 type PVC resin 90Kg, heavy calcium carbonate 25Kg, trioctyl trimellitate 26Kg, epoxy soybean oil 4Kg, antimony trioxide 2.5Kg, aluminum hydroxide 3.5Kg, calcium zinc composite stabilizer 4Kg, 8Kg of chlorinated polyethylene with a chlorine content of 30%, 1.2Kg of polyethylene wax, and 0.3Kg of tris[2.4-di-tert-butylphenyl]phosphite; put the mixed raw materials into a high-speed blender , stirring at 140°C for 15 minutes; extruding and granulating the stirred raw materials through a twin-screw extruder, cutting and air-cooling to obtain a high-temperature-resistant, flame-retardant, and environmentally friendly PVC modified material; the twin-screw extruder The temperature of the extruded screw is: 140°C for the first stage, 140°C for the second stage, 135°C for the third stage, 135°C for the fourth stage and 135°C for the fifth stage. The mechanical and physical properties of the high-temperature-resistant, flame-retardant and environmentally fr...

Embodiment 3

[0055] Weigh raw materials SG-5 type PVC resin 50Kg, SG-7 type PVC resin 50Kg, heavy calcium carbonate 17.5Kg, light calcium carbonate 25Kg, dioctyl terephthalate 24Kg, trioctyl trimellitate 12Kg, 4Kg of epoxy soybean oil, 1.8Kg of antimony trioxide, 5Kg of aluminum hydroxide, 3Kg of calcium zinc composite stabilizer, 2Kg of chlorinated polyethylene with a chlorine content of 35%, 0.6Kg of stearic acid, 0.8Kg of polyethylene wax, β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol 0.5Kg mixed; put the mixed raw materials into a high-speed blender, and stir at 120°C for 20min Extrude and granulate the stirred raw material through a twin-screw extruder, and then cut and air-cool to obtain a high-temperature-resistant, flame-retardant, environmentally friendly PVC modified material; the screw temperature of the twin-screw extruder is: a section of 160 ℃, 160°C for the second stage, 155°C for the third stage, 150°C for the fourth stage and 148°C for the fifth stage...

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Abstract

The invention relates to the technical field of PVC (polyvinyl chloride) composite materials, and particularly relates to a high-temperature resistant flame-retardant environment-friendly PVC (polyvinyl chloride) modified material and a preparation method thereof. The alloy material comprises the following raw materials in parts by weight: 80-120 parts of PVC resin, 15-45 parts of filler, 25-55 parts of plasticizer, 5-10 parts of flame retardant, 2-10 parts of stabilizer, 2-10 parts of impact modifier, 1-2 parts of lubricant and 0.1-1.0 part of antioxidant. The raw materials are weighed and mixed according to the parts by weight; then the mixture is stirred and extruded and granulated by a twin-screw extruder; and the alloy material is obtained by cutting and air cooling. The alloy material provided by the invention is high-temperature resistant and environment-friendly, and has high strength, high flame retardance, strong compression performance and toughness, good processing performance, excellent comprehensive performance and wide application prospects. The preparation method provided by the invention is simple in technology and convenient to operate and control, realizes stable quality and high production efficiency, and can be applied to large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a high-temperature-resistant, flame-retardant and environmentally friendly PVC modified material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials; but also There are the following disadvantages: 1. The toughness is poor, and it is easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K3/26C08K3/34C08K5/12C08K5/1515C08K3/22B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 宁建华朱其华
Owner 广东祺龙科技有限公司
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