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Cold-resistant super-toughened nylon 66 and manufacturing process thereof

A nylon and super-tough technology, which is applied in the field of organic polymer composite materials, can solve the problems of incapable of large-scale production and use, insufficient process or technology, and high price, so as to reduce the cost of raw materials and production costs, improve comprehensive competitiveness, and facilitate production procurement. convenient effect

Inactive Publication Date: 2010-07-28
KECHUANG POLYMER SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In the current market, the prices of related products of large foreign companies are extremely high, while the products of domestic manufacturers have sacrificed some of the advantages of nylon 66 itself, or due to insufficient craftsmanship or technology, the stability of product quality is not well controlled and cannot be scaled up. Production and use, this technical invention is produced in order to effectively overcome the above-mentioned technical defects

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0010] Embodiment 1 provides a kind of cold-resistant super-tough nylon 66, which is composed of the following components by weight ratio, nylon 66: 82.5%; cold-resistant agent: 8%; impact-resistant modifier: 8%; antioxidant: 1.0%; Agent: 0.5%.

[0011] First dry nylon 66, cold-resistant agent and impact modifier at 85 degrees and 60 degrees respectively, then weigh them with antioxidants and other additives according to the proportion and mix them in the mixer at low speed for 10 minutes. The mixer adopts Low-speed mixing, the gap between the mixing blade and the cylinder wall should be less than 0.5 cm, the mixing effect of raw and auxiliary materials should be visually uniform, and the various particles and powders should be basically uniform without obvious agglomeration or aggregation; the twin-screw extruder uses 40 aspect ratio, medium strength shear Cutting; the water-cooled strip cutting method is adopted, and the cold-resistant super-tough nylon 66 material is obtain...

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Abstract

The invention relates to an organic polymer composite material, in particular to cold-resistant super-toughened nylon 66 and a manufacturing process thereof. The cold-resistant super-toughened nylon 66 consists of the following components in percentage by weight: 49.5 to 90 percent of nylon 66, 3 to 35 percent of anti-freezing agent, 3 to 35 percent of impact modifier, 0.3 to 1.5 percent of antioxidant, and 0.3 to 5.5 percent of other aids. Through the cold-resistant super-toughened nylon 66 and the manufacturing process thereof, the impact strength of a cantilever notch is about ten times higher than that of common nylon 66 at the low temperature of 40 DEG C below zero; the cold-resistant super-toughened nylon 66 is convenient to produce and purchase; and raw and auxiliary materials and production equipment are all made in China, so that the raw material cost and production cost are greatly reduced, and the comprehensive competitive power of the product is effectively improved.

Description

technical field [0001] The invention relates to an organic polymer composite material, more specifically, relates to a cold-resistant super-tough nylon 66 and a preparation method thereof. Background technique [0002] Nylon 66 is a polyamide resin, one of the most widely used engineering plastics. Its amide group is polar and has a strong hydrogen bond in its structure, which makes nylon 66 have a high melting point and good Excellent physical and mechanical properties, wear resistance and self-lubricating properties, these comprehensive characteristics are not available in other plastics. However, the impact strength of pure nylon 66 is low, and this shortcoming is more prominent at lower ambient temperatures. Therefore, research on composite impact modification of nylon 66 has been carried out. Cold-resistant and toughened nylon 66 maintains the inherent characteristics of the resin, but its impact strength is increased by ten to dozens of times, and it can still mainta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06
Inventor 孙平
Owner KECHUANG POLYMER SUZHOU
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