Environment-friendly polyamide composition with good appearance and hot water stability and preparation method of polyamide composition

Abstract

The invention relates to environment-friendly polyamide composition with good appearance and hot water stability and a preparation method of the polyamide composition. The environment-friendly polyamide composition is prepared from components in percentage by weight as follows: 25%-65% of polyamide A, 5%-30% of polyamide B, 25%-50% of glass fibers, 1%-10% of a compatilizer, 0.2%-0.6% of a coupling agent, 0.2%-0.4% of an antioxidant and 0.2%-1% of a lubricant. The invention further provides the preparation method of the composition. The polyamide composition and the preparation method have the advantages as follows: the prepared material has excellent appearance quality and mechanical performance and high hot water resistance retention rate, is environment-friendly and very low in precipitation, meets the requirements of food contact materials and is particularly applicable to the field of high-pressure cleaning and the water contact fields such as daily bathroom equipment accessories and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an environment-friendly hot water stable polyamide composition with good appearance and a preparation method thereof. Background technique [0002] PA66 is one of the most productive and widely used varieties in the polyamide family, and is an excellent engineering plastic. It has many excellent properties such as wear resistance, self-lubrication, impact resistance, etc., and is widely used in automobiles, machinery, electronics and other fields. But at the same time, due to its high water absorption, PA66 has disadvantages such as unstable dimensions, and a large gap between dry and wet performance. In order to improve this problem, in order to realize the application of engineering plastics, it is one of the more common means in the industry to use glass fiber filling reinforcement modification, but conventional glass fiber modification will not only cause "floating fibers" a...

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Problems solved by technology

[0003] Chinese patent document CN 102311638B discloses a hydrolysis-resistant and alcoholysis-resistant glass fiber-reinforced PPA material and its preparation method. The material prepared by its invention has high alcoholysis resistance, but its performance cannot meet the requirements for high burst strength , and the cost of raw materials is high, the production stability is not easy to control, the risk of precipitation is high, and it is not easy to be used as a material in the field of domestic water contact

[0004] But there is no report about a kind of environment-friendly good appearance hot water stable polyamide composition and preparation method thereof

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