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High-toughness PVC pipe

A PVC pipe, high toughness technology, applied in the field of pipes, can solve the problems of poor thermal stability and light resistance, PVC discoloration, etc., and achieve the effects of good dispersion, good shape, and excellent notched impact strength

Pending Publication Date: 2020-12-22
张小伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Except for a few organic solvents, it can withstand any concentration of hydrochloric acid, sulfuric acid below 90%, nitric acid below 50% and caustic soda below 20% at room temperature, and it is also quite stable for salts; PVC has relatively high thermal stability and light resistance. Poor, it can start to decompose and release hydrogen chloride gas above 140°C, causing PVC to change color

Method used

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  • High-toughness PVC pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of high tenacity PVC pipe material, comprises the raw material of following parts by weight:

[0030] 100 parts of modified PVC resin powder, 2 parts of betaine, 1 part of paraffin, 6 parts of heat stabilizer, 2 parts of attapulgite, 6 parts of light calcium carbonate, 1 part of isooctyl tin dimethyl dimercaptoacetate, ortho 1 part of diisobutyl phthalate, 0.5 part of triacetin, 1 part of zinc sulfide and 0.2 part of methyltriethoxysilane;

[0031] The high tenacity PVC pipe is prepared by the following steps:

[0032]The first step is to weigh each raw material according to the weight of the raw materials, add modified PVC resin powder, betaine and paraffin in the stirring tank, stir for 30min at a temperature of 40°C and a stirring speed of 3500r / min, and then Add heat stabilizer, attapulgite, light calcium carbonate, isooctyl tin dimethyldithioglycolate, diisobutyl phthalate, triacetin, zinc sulfide, and methyltriethoxysilane in sequence , keep the temperatu...

Embodiment 2

[0046] A kind of high tenacity PVC pipe material, comprises the raw material of following parts by weight:

[0047] 150 parts of modified PVC resin powder, 3 parts of betaine, 2 parts of paraffin, 8 parts of heat stabilizer, 3 parts of attapulgite, 7 parts of light calcium carbonate, 1 part of isooctyl tin dimethyl dimercaptoacetate, ortho 2 parts of diisobutyl phthalate, 0.6 part of triacetin, 2 parts of zinc sulfide and 0.3 part of methyltriethoxysilane;

[0048] The high tenacity PVC pipe is prepared by the following steps:

[0049] The first step is to weigh each raw material according to the weight of the raw materials, add modified PVC resin powder, betaine and paraffin in the stirring tank, and stir for 35 minutes at a temperature of 45 ° C and a stirring speed of 3500 r / min, and then Add heat stabilizer, attapulgite, light calcium carbonate, isooctyl tin dimethyldithioglycolate, diisobutyl phthalate, triacetin, zinc sulfide, and methyltriethoxysilane in sequence , ke...

Embodiment 3

[0063] A kind of high tenacity PVC pipe material, comprises the raw material of following parts by weight:

[0064] 200 parts of modified PVC resin powder, 4 parts of betaine, 3 parts of paraffin, 10 parts of heat stabilizer, 4 parts of attapulgite, 8 parts of light calcium carbonate, 2 parts of isooctyl tin dimethyl dimercaptoacetate, ortho 3 parts of diisobutyl phthalate, 0.7 parts of triacetin, 3 parts of zinc sulfide and 0.4 parts of methyltriethoxysilane;

[0065] The high tenacity PVC pipe is prepared by the following steps:

[0066]The first step is to weigh each raw material according to the weight of the raw materials, add modified PVC resin powder, betaine and paraffin in the stirring tank, stir for 40min at a temperature of 50°C and a stirring speed of 3500r / min, and then Add heat stabilizer, attapulgite, light calcium carbonate, isooctyl tin dimethyldithioglycolate, diisobutyl phthalate, triacetin, zinc sulfide, and methyltriethoxysilane in sequence , keep the te...

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Abstract

The invention discloses a high-toughness PVC pipe. The PVC pipe is prepared from the following raw materials in parts by weight: 100-200 parts of modified PVC resin powder, 2-4 parts of glycine betaine, 1-3 parts of paraffin, -610 parts of a heat stabilizer, 2-4 parts of attapulgite, 6-8 parts of light calcium carbonate, 1-2 parts of dimethyl dimercaptoacetic acid isooctyl ester tin, 1-3 parts ofdiisobutyl phthalate, 0.5-0.7 part of glycerol triacetate, 1-3 parts of zinc sulfide and 0.2-0.4 part of methyltriethoxysilane. The high-toughness PVC pipe is prepared through the following steps: step 1, weighing all the raw materials according to the weight parts of the raw materials and adding into a stirring kettle to be stirred and mixed to obtain a mixture; step 2, adding the mixture obtained in the step 1 into a parallel twin-screw extruder for melt blending and granulation to obtain mixed particles; and 3, extruding the mixed particles obtained in the step 2 by using a conical twin-screw extruder to form a pipe, thereby obtaining the high-toughness PVC pipe.

Description

technical field [0001] The invention belongs to the technical field of pipes, in particular to a high-toughness PVC pipe. Background technique [0002] Polyvinyl chloride, referred to as PVC, has excellent flame retardancy, wear resistance, chemical corrosion resistance, comprehensive mechanical properties, product transparency, electrical insulation and easy processing; PVC is a non-toxic, non-toxic Smelly white powder, it has high chemical stability and good plasticity. Except for a few organic solvents, it can withstand any concentration of hydrochloric acid, sulfuric acid below 90%, nitric acid below 50% and caustic soda below 20% at room temperature, and is quite stable for salts; PVC has relatively high thermal stability and light resistance. Poor, it can start to decompose and release hydrogen chloride gas above 140°C, causing PVC to change color. PVC has excellent electrical insulation and generally does not burn. It can burn on the flame and release hydrogen chlor...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L91/06C08K13/04C08K5/19C08K7/26C08K3/26C08K5/12C08K5/103C08K5/5419C08K5/58C08K5/526C08K5/3462C08F293/00C08F279/02C08F220/14C08F220/44
CPCC08L53/00C08F293/00C08F279/02C08L2203/18C08L2201/08C08K2003/265C08L91/06C08K13/04C08K5/19C08K7/26C08K3/26C08K5/12C08K5/103C08K5/5419C08K5/58C08K5/526C08K5/3462C08F220/14C08F220/44
Inventor 张小伟
Owner 张小伟
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