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Hard polyvinyl chloride active impact resistant assistants

A technology of rigid polyvinyl chloride and coagents, which is applied in the field of anti-impact coagents, can solve the problems of reduced tensile strength and affecting performance, and achieve the goal of improving tensile properties, improving compatibility and improving gloss Effect

Inactive Publication Date: 2004-02-04
四川新元材料工程研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of use, it was found that although these impact resistance additives can improve the impact resistance of rigid polyvinyl chloride (UPVC) products, but at the same time bring about a significant decrease in tensile strength, which directly affects the performance of its products, such as water supply Pressure resistance of fittings and tubing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Use 4 parts of porous flake-shaped V-type polyvinyl chloride micropowder, 3 parts of ultrafine activated calcium carbonate or 5 parts of nano-scale activated calcium carbonate with a maximum particle size of no more than 30 microns and an average particle size of no more than 10 microns, in the mixer Mix evenly in the medium to prepare polyvinyl chloride anti-impact active additive. With the anti-shock active auxiliary agent of the present invention as the anti-impact auxiliary agent, the following formula can be adopted for the production of PVC-U water supply pipe fittings: 100 parts of VII type PVC, 7 parts of anti-impact active auxiliary agent, 3 parts of processing aid, ordinary precipitated carbonic acid 5 parts of calcium, 2 parts of titanium dioxide, 6 parts of bear brand EP2305 stabilizer. After the kneaded raw materials are injection molded, various specifications of PVC-U water supply pipe fittings with a diameter of 63 to 110 mm can be produced with all indi...

Embodiment 2

[0023] Use 4 parts of porous flake-shaped V-type polyvinyl chloride micropowder, 3 parts of ultrafine activated calcium carbonate or 5 parts of nano-scale activated calcium carbonate with a maximum particle size of no more than 30 microns and an average particle size of no more than 10 microns, in the mixer Mix evenly in the medium to prepare polyvinyl chloride anti-impact active additive. Using the anti-shock active auxiliary agent of the present invention as the anti-impact auxiliary agent, the following formula can be adopted for the production of PVC-U water supply pipe fittings: 100 parts of VII type PVC, 4 parts of active anti-impact auxiliary agent, 1.5 parts of processing aid, ordinary precipitated carbonic acid 5 parts of calcium, 2 parts of titanium dioxide, 4.8 parts of bear brand EP2305 stabilizer. After the kneaded raw materials are injection molded, various specifications of PVC-U water supply pipe fittings with a diameter of 16 to 50mm can be produced with all i...

Embodiment 3

[0025] Adopt 6 parts of porous sheet-like VII type polyvinyl chloride micropowder, 2.5 parts of superfine or nano-scale unactivated calcium carbonate with a maximum particle size of not more than 30 microns and an average particle size of not more than 10 microns, and mix them uniformly in a mixer. That is, the polyvinyl chloride anti-impact active additive is obtained. Using the anti-shock active auxiliary agent of the present invention as the anti-impact auxiliary agent, the following formula can be adopted for the production of PVC-U drainage pipe fittings: 100 parts of VII type PVC, 5 parts of active anti-impact auxiliary agent, 2.5 parts of processing aid, ordinary precipitated carbonic acid 15 parts of calcium, 2 parts of titanium dioxide, 4.8 parts of bear brand EP2305 stabilizer. After the kneaded raw materials are injection molded, various specifications of PVC-U drainage pipe fittings with a diameter of 90 to 110 mm can be produced, with all indicators meeting the na...

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Abstract

An active assistant for improving the impact performance of hard polyvinyl chloride material is prepared from the active PVC microparticles with high compatibility with basic resin and filler, and modified organic and inorganic materials through proportional mixing. Its advantages are high effect to improving the impact and refractory performance of PVC material, low dosage and low cost.

Description

1. Technical field [0001] The invention relates to a general polymer plastic and its molding process. More specifically, the present invention relates to an anti-impact active additive for improving the impact resistance of rigid polyvinyl chloride products. 2. Background technology [0002] Polyvinyl chloride (PVC) is an important general-purpose plastic, accounting for about 27% of the total plastic, and its output ranks second in the world's resin production, second only to polyethylene. PVC has many excellent properties, such as high strength, flame retardant, good transparency, chemical corrosion resistance, low price, etc., but rigid PVC has high melting point, high viscosity, poor thermal stability, and difficult molding process. The product is brittle, so processing and application are limited. In order to improve the thermal stability of PVC and improve the mechanical properties and appearance of products, various additives need to be added, among which anti-impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08L27/06
Inventor 林伟雷勇
Owner 四川新元材料工程研究所
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