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Modified polyhexamethylene dodecanamide and preparation method thereof

A technology of polyhexamethylene dodecanediamide and decabromodiphenylethane, which is applied in the field of modified polyhexamethylene dodecanediamide and its preparation, and can solve the problem that the flame retardant effect is not particularly ideal and the flame retardant To solve problems such as large dosage of additives and influence on fluidity, to achieve the effect of optimizing synergistic effect, improving compatibility, and reducing the amount of use

Inactive Publication Date: 2013-12-04
SUZHOU NAITESU ENG PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant statistical data, tragic events caused by smog accounted for more than one-third of the total death toll in fires. There are many types of flame retardants currently available for polyhexamethylene dodecane diamide fibers, but Generally, it is a single addition. Although the flame retardancy of polyhexamethylene diamide fibers can be improved, the flame retardant effect is not particularly ideal. In addition, the addition of flame retardants is relatively large. Other properties of hexamethylenediamine fiber have a certain influence, such as affecting its fluidity, plasticity, etc.

Method used

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Embodiment 1

[0009] Embodiment 1 provides a modified polyhexamethylene dodecane diamide and a preparation method thereof, which is composed of the following components by weight ratio, polyhexamethylene dodecane diamide: 72%; red phosphorus: 5%; Decabromodiphenylethane: 15%; Melamine Phosphate: 5%; Strengthening Agent: 1%; Flow Modifier: 1%; Antioxidant: 0.5%; Lubricant: 0.5%.

[0010] The above raw materials are prepared according to the weight ratio, and then polyhexamethylene dodecanediamide is dried on a vacuum dryer at a temperature of 85-90 degrees for 6-8 hours, and then mixed with red phosphorus, decabromodiphenylethane, Melamine phosphate, reinforcing agent, flow modifier, antioxidant and lubricant are weighed according to the proportion and mixed in the mixer at low speed for 15 minutes. The gap between the mixing blade and the cylinder wall of the mixer should not be greater than 3 mm, the mixing effect of raw and auxiliary materials should be visually observed that the various ...

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Abstract

The invention relates to modified polyhexamethylene dodecanamide and a preparation method thereof. The modified polyhexamethylene dodecanamide is composed of the components of, by weight: 68-77% of polyhexamethylene dodecanamide, 4-6% of red phosphorus, 13-15% of decabromodiphenylethane, 3-5% of melamine phosphate, 1-2% of an enhancer, 1-2% of a flow modifier, 0.5-1% of an antioxidant, and 0.5-1% of a lubricant. According to the invention, a phosphorus-series flame retardant, a nitrogen-series flame-retardant and a halogen-series flame-retardant are composed, such that a maximal synergetic effect of the flame-retardants is developed. A flame-retarding effect of nylon products is greatly improved, and dose of flame-retardant can be reduced, such that cost is reduced. Also, compatibility between the flame-retardant and resin is improved, such that a synergetic effect of flame-retardant is optimized.

Description

technical field [0001] The invention relates to a modified composite material of high molecular polymer, more specifically, the invention relates to a modified polyhexamethylene dodecane diamide composite material. In addition, the invention also relates to a method for preparing modified polyhexamethylene dodecane diamide. Background technique [0002] With the development of society, consumers and manufacturers pay more and more attention to the fire protection requirements of daily necessities such as electronic appliances. Unmodified nylon has poor flame retardancy, its vertical combustion can only reach UL94 V-2 level, its oxygen index is about 24, and it will drip during combustion. It is easy to cause fire, and the vertical combustion of modified nylon can reach V-0 level, which greatly improves its fire safety on finished products. Especially in the field of electronic products, countless fires have been caused by nylon, causing great losses. Therefore, the flame-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/02C08K3/02C08K5/03C08K5/3492B29C47/92B29C48/92
CPCB29C48/04B29C48/022
Inventor 陈丽华
Owner SUZHOU NAITESU ENG PLASTICS TECH