High heat-resistant high-strength PPE alloy material and preparation method thereof

Abstract

Provided is a high heat-resistant high-strength PPE alloy material. The high heat-resistant high-strength PPE alloy material comprises the following components of: in percent by mass, 22-35% of PPE, 20-27% of PA6, 14-21% of PA46, 3% of a compatibilizer, 20-35% of glass fiber, 0.3% of a coupling agent, 0.2% of an antioxidant and 0.5% of a lubricant. The high heat-resistant high-strength PPE alloy material has the following advantages that: 1, by adding the component of PA46, the process is optimized, and the heat distortion temperature of the material is increased by 15-25 DEG C; 2, by introducing the compatibilizer, the compatibility is increased, the overall fluidity and mechanical properties are improved, and meanwhile a good appearance of the product is obtained; 3, excellent stabilityat high temperature and heat is achieved, excellent yellowing resistance and high-temperature degradation protection are achieved, thermal stability is improved, and high mechanical properties of thematerial can be maintained for a long period of time; 4, by adding the lubricant with high molecular weight and free of volatilization, the comprehensive performance of the PPE alloy material is muchbetter than that of spiro resin (CBT), dendronized polymer and other traditional resin with singular performance.

Description

technical field [0001] The invention relates to a PPE alloy material, in particular to a high heat-resistant and high-strength PPE alloy material and a preparation method thereof. Background technique [0002] Polyphenylene ether PPE has excellent comprehensive properties, such as: excellent heat resistance and low temperature resistance, outstanding mechanical properties and electrical insulation, excellent dimensional stability, high rigidity, small creep, and good chemical stability , self-extinguishing; after glass fiber reinforced, the heat distortion temperature can reach 260°C, and the continuous use temperature can reach 200-240°C, but polyphenylene ether PPE has high melt viscosity, poor fluidity, difficult processing, and glass fiber filled surface floating Fiber more, affect the appearance. In addition, PS is a colorless and transparent thermoplastic with low relative density, low melt viscosity, good fluidity, good processing performance, good corrosion resistan...

AI Technical Summary

Problems solved by technology

However, with the development of the automobile industry and the electronic and electrical industry, higher and more stringent requirements have been put forward for the performance of the material. Due to the low mechanical properties of the PS material itself, the glass fiber reinforced PPE / PS material has poor mechanical properties and The improvement in thermal performance is very limited, and it cannot meet the requirements of some special applications.

For example, some high-temperature-resistant components require a heat distortion temperature of over 230°C, and it is generally difficult to meet the requirements with reinforced PPE / PS

In China, crystalline materials PA or PA66 are usually used instead of PS to increase the heat distortion temperature of PPE / PA. However, whether it is PA6 or PA66, the heat distortion temperature of the alloy reinforced with glass fiber is generally difficult to exceed 230°C, and the glass fiber content is too high. Most of them will cause serious floating fibers on the surface of the parts, high melt viscosity, which is not conducive to processing, etc.