Polyphenylene oxide is one of the five general engineering plastics in the world. It has the advantages of high rigidity, high heat resistance, flame retardancy, high strength and excellent electrical performance. However, its high melt viscosity, poor melt fluidity, poor processability and poor impact resistance limit its application fields.
Second, the reasons for the modification of polyphenylene ether
In order to improve the performance of PPO and expand its application field, PPO was modified, and the modified PPO was called MPPO.
(1) modified PPE has excellent electrical properties, heat resistance, dimensional stability, flame retardancy, hot water resistance, balanced mechanical properties and weather resistance, and its application is developing rapidly. Widely used in electronics, automobiles, office automation, medical equipment, textile machinery, aerospace and military fields.
(2) At present, modified labor protection articles are mainly used in TV sets, display devices, copiers, cameras, electrical connectors and automobile industries. Especially PPE resin, because of its low dielectric loss, is often used to process UHF electronic components. With the rapid development of communication industry at home and abroad, it is very common to produce printed circuit boards with crosslinked PPE, and the domestic consumption has increased geometrically.
(3) At present, the consumption of modified PPO in the world is increasing year by year. According to incomplete statistics, the average annual growth rate is as high as 10%. In 200 1 year, the amount of modified PPO used in the automobile industry in the United States, Western Europe and Japan reached about 1.2 million tons. The fields where consumption is concentrated are household appliances, automobiles and office automation, among which the automobile field is the most promising industry. The consumption of modified PPO in China is also increasing year by year. In order to meet the urgent demand of domestic market, many domestic enterprises produce modified PPO, and still need to import more than 20,000 tons of PPO and modified PPO from abroad every year to meet the demand of domestic market. With the rapid development of automobile, electronics and office automation industries in China, its demand will show an extremely rapid growth rate.