Highly-polished ethylene glycol resistant composite reinforced nylon 66 and process for producing same

Abstract

The invention relates to organic polymer composite material, in particular to highly-polished ethylene glycol resistant composite reinforced nylon 66 and a process for producing the same. The highly-polished ethylene glycol resistant composite reinforced nylon 66 comprises the following components by weight percent: 50-70 percent of nylon 66, 25-35 percent of halogen-free alkali-free glass fiber, 0.1-3.0 percent of heat stabilizer, 0.2-1.5 percent of ethylene glycol resistant treating agent, 0.1-3.0 percent of glass fiber treating agent, 0.1-0.5 percent of nucleating agent, 1.0-2.5 percent of nylon-base high-pigment black masterbatch and 1.3-5.5 percent of other auxiliary agent. The highly-polished ethylene glycol resistant composite reinforced nylon 66 has highly-polished appearance and long-term heat, aging and ethylene glycol resisting characteristics in addition to the excellent mechanical properties, is convenient to produce and purchase, adopts the domestic raw materials, auxiliary materials and additives and meets all the environmental protection requirements, thereby being more competitive.

Description

technical field [0001] The invention relates to an organic polymer composite material, and more specifically relates to a high-gloss and glycol-resistant composite reinforced 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, pure nylon 66 has disadvantages such as low heat distortion temperature, high water absorption, low impact strength before water absorption, and sharp drop in rigidity after water absorption, which limits the application of nylon 66, and further reduces the material selection room for design engineers in downstream industries. . Therefore, research ...

AI Technical Summary

Problems solved by technology

However, while glass fiber reinforced nylon 66 greatly improves the physical and mechanical properties of nylon 66, it also has an obvious disadvantage, that is, because the two-phase interface between glass fiber and nylon 66 is not easy to combine well, it is easy to produce glass fiber exposure on the surface of the product, that is, Usually what people in the industry refer to as exposed fiber / floating fiber, this obviously reduces the surface finish of the product, making the product surface rough and blooming, thus limiting the application of this raw material in products that require high surface finish or aesthetics

In addition, although nylon 66 itself has good aging resistance, due to its high water absorption rate, it can absorb moisture in the air for a long time, resulting in changes in physical properties, especially in long-term high-temperature and high-humidity environments. It is unacceptable and must be greatly improved

[0003] In the current market, only a few large foreign multinational companies have done a good job in improving these shortcomings, while the products of domestic companies are always unable to do so in terms of appearance, heat aging resistance, ethylene glycol resistance, and high strength. At the same time have a better effect