Modified polycaprolactam and preparation method thereof

A polycaprolactam and modification technology, which is applied in the field of modified polycaprolactam and its preparation, can solve the problems of polycaprolactam fiber performance impact, unsatisfactory flame retardant effect, large amount of flame retardant addition, etc., to achieve optimal synergistic effect, Effect of improving compatibility and reducing usage

Inactive Publication Date: 2013-12-04
SUZHOU NAITESU ENG PLASTICS TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

According to relevant statistical data, tragic events caused by smoke accounted for more than one-third of the total death toll in fires. There are many types of flame retardants that can be used for polycaprolactam fibers, but they are generally single additions. Although It can improve t

Method used

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Experimental program
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Embodiment 1

[0009] Embodiment 1 provides a modified polycaprolactam and its preparation method, which is composed of the following components by weight: polycaprolactam: 72%; red phosphorus: 5%; decabromodiphenylethane: 15%; melamine phosphate: 5%; enhancer: 1%; flow modifier: 1%; antioxidant: 0.5%; lubricant: 0.5%.

[0010] Prepare the above raw materials according to the weight ratio, then dry polycaprolactam on a vacuum dryer at a temperature of 85-90 degrees for 6-8 hours, and then mix it with red phosphorus, decabromodiphenylethane, melamine phosphate, enhancer, The flow modifier, antioxidant and lubricant are weighed according to the proportion and mixed in the mixer at a low speed for 15 minutes. The gap between the mixing blade and the cylinder wall of the mixer should not be greater than 3mm, and the mixing effect of raw and auxiliary materials should be The various particles and powders are basically uniform without obvious agglomeration or agglomeration, and then passed through...

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Abstract

The invention relates to modified polycaprolactam and a preparation method thereof. The modified polycaprolactam is composed of the components of, by weight: 68-77% of polycaprolactam, 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 polycaprolactam composite material. In addition, the invention also relates to a method for preparing the modified polycaprolactam. 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-retardant modification of nylon has...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K13/02C08K3/02C08K5/03C08K5/3492B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 陈丽华
Owner SUZHOU NAITESU ENG PLASTICS TECH
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