Modified polyformaldehyde composition

A polyoxymethylene composition and polyoxymethylene technology, applied in the field of polymer compositions, can solve problems such as performance defects, and achieve the effects of compensating for the loss of mechanical properties, maintaining properties, inhibiting degradation and recrystallization

Inactive Publication Date: 2013-07-31
SUZHOU SUNWAY POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of modified poly...

Method used

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  • Modified polyformaldehyde composition

Examples

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Embodiment 1

[0017] First, 10 parts of graphene and 4 parts of dispersant polyvinylpyrrolidone are pre-mixed and dispersed, and then the graphene-dispersant mixture is mixed with 80 parts of polyoxymethylene, 1 part of light shielding agent zinc oxide and 0.2 part of antioxidant tetrakis (β-( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.

Embodiment 2

[0019] First, 12 parts of graphene and 5 parts of dispersant polyvinylpyrrolidone are pre-mixed and dispersed, and then the graphene-dispersant mixture is mixed with 90 parts of polyoxymethylene, 2 parts of light shielding agent titanium dioxide and 0.3 parts of antioxidant β-(4-hydroxyl Phenyl-3,5-di-tert-butyl) n-octadecyl propionate is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.

Embodiment 3

[0021] First, 14 parts of graphene and 7 parts of dispersant polyvinylpyrrolidone were pre-mixed and dispersed, and then the graphene-dispersant mixture was mixed with 90 parts of polyoxymethylene, 4 parts of light shielding agent zinc oxide and 0.4 parts of antioxidant 2,6-di The tert-butyl-p-cresol is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.

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Abstract

The invention relates to a polymer composition, and particularly relates to a modified polyformaldehyde composition. The modified polyformaldehyde composition comprises, by weight, 80-100 parts of polyoxymethylene, 10-15 parts of a conductive additive, 4-8 parts of a dispersing agent, 1-5 parts of a light-shielding agent and 0.2-0.5 part of an antioxidant, wherein the conductive additive is graphene. In the modified polyformaldehyde composition, the graphene is used as the conductive additive, so that the modified polyformaldehyde composition has good conductive performance; surface resistivity of polyformaldehyde is effectively reduced; and by adding other series of auxiliary agents, the obtained polyformaldehyde has strong anti-static capacity, good mechanical performance, ultraviolet resistance and strong thermal oxidation resistance.

Description

technical field [0001] The invention relates to a polymer composition, in particular to a modified polyoxymethylene composition. Background technique [0002] Polyoxymethylene (POM) is an engineering plastic with excellent comprehensive properties. It has regular molecular structure, high crystallinity, excellent strength and rigidity, good wear resistance and self-lubrication, and can replace some metal materials. Therefore, it is widely used in automobiles. , textile accessories, electronic appliances, precision machinery and other fields. But it also has some performance defects, such as insufficient impact toughness caused by high crystallinity; weaker ether bonds in the molecular structure lead to poor aging resistance, especially UV aging resistance and thermal oxidation aging resistance; The accumulation of static electricity will lead to adverse phenomena such as dust collection, electric shock, and even spark discharge, which limits the application of polyoxymethyl...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08L39/06C08L33/26C08L71/02C08L29/04C08K13/02C08K3/04C08K3/22C08K5/134C08K5/13C08K5/375
Inventor 任俊
Owner SUZHOU SUNWAY POLYMER
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