Cold tolerant, shock resistant polyamide compoiste material in high intensity and its producing process

Abstract

The present invention discloses a cold-resisting impact-resisting and high-strength polyamide composite material and its preparation method. Its composition includes (by weight portion) 100 portions of polyamide monomer, 0.05-1 portion of surfactant, 1-5 portions of SiO2 monomer, 20 portions of dispersion medium and 5-15 portions of toughening agent, in which the polyamide monomer is xi-capralactam or adipic acid hexamethylene diamine salt, dispersion medium is water, the toughening agent is modified EVA or POE or EPDM toughening agent. Besides, said invention also provides the concrete composition of said composite surfactant.

Description

Technical field [0001] The invention relates to a cold-resistant, impact-resistant and high-strength polyamide composite material and a manufacturing method thereof. Background technique [0002] In modern technology, polyamide is a widely used engineering plastic with good physical and mechanical properties and impact toughness. However, at low temperature, polyamide, like other non-modified plastics, has its own The performance is greatly reduced, such as the product is prone to cracking, and the impact and rigidity are significantly reduced at the same time, which affects its use in low-temperature areas or low-temperature fields. For decades, various high-strength, high-impact or functional polyamide composite materials It has been researched and developed one after another at home and abroad, and there are countless patents and technical materials reported, but the results of its research focus on improving rigidity or toughness alone, and reports that can improve both ...

AI Technical Summary

Problems solved by technology

[0002] In modern technology, polyamide is a widely used engineering plastic with good physical and mechanical properties and impact toughness. However, at low temperature, polyamide, like other non-modified plastics, has its own The performance is greatly reduced, such as the product is prone to cracking, and the impact and rigidity are significantly reduced at the same time, which affects its use in low-temperature areas or low-temperature fields. For decades, various high-strength, high-impact or functional polyamide composite materials It has been researched and developed one after another at home and abroad, and there are countless patents and technical materials reported, but the results of its research focus on improving rigidity or toughness alone, and reports that can improve both toughness and rigidity, especially in There is no report on the impact resistance at low temperature (-50°C) while maintaining the rigidity at room temperature. For example, national patents AU9955622A1, BR9917441A, CA2381452, EP1214356A1, JP2003507498, CN1110512C, etc. have all reported improving the performance of polyamide, and finally did not Able to report technologies that effectively maintain or improve the rigidity of raw materials while improving the toughness of raw materials

There are technical data showing low-temperature impact-resistant composite materials, but their rigidity is significantly lower than that of their raw materials