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Waste PVC (Polyvinyl Chloride) and fly ash composite material and preparation method thereof

A technology of composite materials and fly ash, which is applied in the field of waste PVC and fly ash composite materials and their preparation, can solve the problems of large amount of fly ash, no patent report, poor material performance, etc., to improve impact performance, test The effect of improving processing performance over a long period of time

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

[0007] However, at present, the amount of fly ash in PVC resin filled with fly ash is very large, which is 4 to 5 times that of PVC resin. Although the cost of raw materials is saved, the performance of the obtained material is poor, which limits its use in some In view of the pollution of waste PVC and fly ash, how to comprehensively utilize these waste PVC and fly ash to turn waste into treasure is a problem that people are generally concerned about, and it is also worth studying for scientists and environmentalists in the plastics industry subject, there is no patent report about fly ash filling waste PVC

Method used

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  • Waste PVC (Polyvinyl Chloride) and fly ash composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The dust adhering to the surface of waste PVC containing 50% by weight of PVC is removed, crushed, and then passed through a 120 mesh sieve for use. The waste PVC is the waste PVC wire and cable of recovery; Dry at 110°C for 3 hours, pass through a 120-mesh sieve, and set aside; weigh 80Kg of waste PVC, 35Kg of fly ash, 3Kg of dioctyl terephthalate, 0.4Kg of antimony trioxide, and 0.6Kg of aluminum hydroxide. Calcium-zinc composite stabilizer 0.5Kg, chlorine content is 25% chlorinated polyethylene 0.5Kg, stearic acid 0.1Kg, polyethylene wax 0.2Kg, tetrakis[β-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionic acid] pentaerythritol ester 0.1Kg mixed; put the mixed raw materials into a high-speed blender, and stir for 25min at a temperature of 100°C; extrude and granulate the stirred raw materials through a twin-screw extruder, After material cutting and air cooling, waste PVC and fly ash composite materials are obtained; the screw temperature of the twin-screw extruder is: 13...

Embodiment 2

[0053] The dust adhering to the surface of waste PVC containing 53% by weight of PVC is removed, crushed, and then passed through a 120 mesh sieve for use. The waste PVC is the waste PVC film of recovery; Dry at ℃ for 2 hours, pass through a 120-mesh sieve, and set aside; Weigh 90Kg of waste PVC, 40Kg of fly ash, 3Kg of trioctyl trimellitate, 1Kg of epoxy soybean oil, 0.5Kg of antimony trioxide, hydrogen Aluminum oxide 0.7Kg, calcium-zinc composite stabilizer 0.8Kg, chlorinated polyethylene 0.8Kg with a chlorine content of 30%, polyethylene wax 0.4Kg, tris[2.4-di-tert-butylphenyl] phosphite 0.2Kg mixed Put the mixed raw materials into a high-speed blender and stir for 15 minutes at a temperature of 140°C; extrude the stirred raw materials through a twin-screw extruder to make granules, cut materials, and air-cool to obtain waste PVC and Fly ash composite material; the screw temperature of the twin-screw extruder is: 140°C for the first stage, 140°C for the second stage, 135°C ...

Embodiment 3

[0055] The dust adhering to the waste and old PVC surface that will contain 56% weight PVC is removed, broken, then cross 120 mesh sieves, stand-by, and described waste and old PVC is the waste and old PVC hose that reclaims; Particle diameter is the fly ash of 0.06mm Dry at 120°C for 1 hour, pass through a 120-mesh sieve, and set aside; weigh 100Kg of waste PVC, 45Kg of fly ash, 3Kg of dioctyl terephthalate, 2Kg of trioctyl trimellitate, and epoxy soybean oil 1Kg, 0.6Kg of antimony trioxide, 08Kg of aluminum hydroxide, 1.1Kg of calcium-zinc composite stabilizer, 1.1Kg of chlorinated polyethylene with a chlorine content of 35%, 0.3Kg of stearic acid, 0.3Kg of polyethylene wax, β- (3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.3Kg mixed; put the mixed raw materials into a high-speed blender, and stir at a temperature of 120°C for 20min; The stirred raw materials are extruded and granulated by a twin-screw extruder, and are cut and air-cooled to obtain a composite ...

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Abstract

The invention relates to the technical field of PVC (Polyvinyl Chloride) composite materials and particularly relates to a waste PVC and fly ash composite material and a preparation method thereof. The waste PVC and fly ash composite material comprises the following raw materials according to parts by weight: 80-120 parts of waste PVC, 35-55 parts of fly ash, 3-10 parts of plasticizer, 1-2 parts of flame retardant, 0.5-2 parts of stabilizer, 0.5-2 parts of impact modifier, 0.3-1 part of lubricant and 0.1-0.5 part of antioxidant. The preparation method comprises the following steps of: weighing all the raw materials according to the parts by weight, mixing, stirring, extruding through a twin-screw extruder for granulation, chopping and air-cooling to obtain the waste PVC and fly ash composite material. The waste PVC and fly ash composite material prepared by the preparation method has excellent heat resistance, high strength, good flame retardant effect, high compression performance and toughness, and excellent processing performance and comprehensive performance; and the additive amount of renewable resources in the waste PVC and fly ash composite material reaches 90%-95%, thus lowering the production cost, reducing the environmental pollution, and bringing good economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a waste PVC and fly ash composite material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) resin is a thermoplastic high polymer polymerized by vinyl chloride (VC) monomer. It is one of the four general-purpose plastics in the world. Because its production cost is lower than that of polyethylene and some metals, and processing The performance and physical and chemical properties of the product are excellent, which can meet the needs of preparing hard to soft, elastomers, fibers, coatings, etc., and are widely used in various fields such as industry, agriculture, and construction. In 2011, China's polyvinyl chloride The output of resin reached 12.95 million tons, a year-on-year increase of 12.52%. It is estimated that the demand for PVC in China is increasing at a rate of 10% per year. The extensive use of PVC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08L23/06C08K13/02C08K3/00C08K5/12C08K5/1515C08K3/22C08K5/09C08K5/134C08K5/524B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/911
Inventor 宁建华朱其华
Owner 广东祺龙科技有限公司
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