PPO 1950J旭化成

PPO 1950J旭化成--Small appliances with PPO as shell and components include electric tools, food processors, mixers, bakers, electric razors, fans, blowers, vacuum cleaners, irons, coffee appliances, etc. Large appliances include refrigerators, air conditioners, dishwashers, washing machines, stoves, etc. Other blow moulding and injection moulding PPO/HIPS. It is also widely used in furniture, medical equipment, transportation, sports equipment and other fields. Nory1 EFC developed by GE is processed into low-density sheets for high-temperature microwave-treated upholstery, which can replace PET, coated sheets and polypropylene in food processing. GE Nory1 PKN can be made into foam dishes for fridge and microwave food packaging. At present, Noryl PKN has been industrialized and its demand has increased rapidly. The construction industry is a new and important target market for PPO in the United States, and PPO foam board has been developed for insulation purposes. PPO/EPS granules can be molded into wallboards, floor blocks and floor substrates. PPO composite can be used for injection moulding of roof panels, and its market application has increased

PPO 1950J旭化成--特性
PPO树脂工业化生产主要采用的氧化偶联技术,聚合一般选用氯化亚铜或溴化亚铜为催化剂,聚合方法一般采用以甲苯为溶剂的溶液法聚合。二甲基酚的氧化偶联反应是放热反应,需要在聚合时控制反应温度。同时聚合物末端含有羟基,在高温不易发生老化,所以必须采用封端剂,封端剂一般为醋酸酐。溶液聚合终了加入沉淀剂,使聚合物析出。沉淀剂一般为甲醇或乙醇。具体工艺为,反应釜内加入定量的氧化亚铜和二甲胺的苯、乙醇溶液,于室温下通入氧气,然后逐步加入-二甲酚的苯和乙醇溶液。缩聚为放热反应,反应温度控制在30 ℃左右。经1～2h后结束反应,然后将聚合物离心分离,产物用含3 %硫酸的乙醇液洗涤,再用稀碱溶液浸泡、水洗、干燥、造粒,即得粒状PPO 树脂。随后将定量的PPO树脂、二氧化钛、聚苯乙烯放入耙式干燥机中,于室温预混3h ,再在双辊塑炼机上与顺丁橡胶和聚苯乙烯共混。充分塑炼后,即可出料,拉成薄片,冷却,粉碎,即得改性PPO。