溴化丁基橡胶的制备(2)(1)

摘要：溴化丁基橡胶（BIIR）是丁基橡胶（IIR）的溴化改性产品,其研究开发始于20世纪50年代,目的是提高IIR硫化性能并改善它与其他橡胶并用的相容性。目前主要生产溴化丁基橡胶的公司包括美国固特异公司、加拿大宝兰山公司(后被德国拜耳公司收购)、比利时Antwerp 公司、美国埃克森公司、德国朗盛公司等国外大公司所垄断。

溴化丁基橡胶的制备方法主要有干混炼法和溶液法两种。干混炼法是在开炼机上将溴化剂加入丁基橡胶中进行热炼，使溴化剂放出的溴与丁基橡胶发生反应，生成溴化丁基橡胶。溶液法的制备过程是在丁基橡胶中加入溶剂溶解、加入溴化剂溴化、中和洗涤多余的溴化剂、去除多余的溶剂、回收产品。相比于干混炼法制备的溴化丁基橡胶来说，溶液法的溴化过程是连续的，生产的产品性能更加稳定。BIIR不仅保持了IIR 原有的透气性低、衰减性高、耐老化、耐候、耐臭氧及耐化学药品性能等特点，还增添了普通IIR 所不具备的特性:硫化剂用量少,硫化速度快；能用各种硫化剂硫化；能与天然橡胶（NR）, 丁苯胶（SBR）,丁腈橡胶（NBR）和氯丁胶（CR）等并用；BIIR 本身与其他橡胶有良好的硫化粘合性能，IIR 则较差；耐热性能比IIR 优异。溴化丁基橡胶主要用于子午线轮胎和斜交轮胎的气密层（内衬层）、胎侧、耐热内胎、容器衬里、品瓶塞、机械垫等。

关键词：溴化丁基橡胶；合成；应用

Abstract：Brominized butyl rubber (BIIR) is butyl rubber (IIR) of the modified products, brominated began its research and development in the 1950s, the purpose is to improve the performance and improve its IIR vulcanized rubber and compatibility with other。Main production brominized butyl rubber company, including the United States, Canada LanShan treasure Goodyear company (German bayer company acquisitions by Antwerp, Belgium), America, Germany, exxon roxar foreign big company monopolized by etc. Beijing yanshan petrochemical company builds at present only a IIR production outfit annual production capacity is 30,000 t, but can only produce ordinary IIR products. China is expected to 2011 IIR consumption will reach about 27 million t, including halogenating butyl rubber (XIIR) demand will reach about 20 million t, China (including XIIR IIR) production development prospects. Brominized butyl rubber main preparation methods of dry mixing method and solution of the two dry mixing method is developed in the open refined machine will brominized butyl rubber were thermal refining, brominated agent of bromine and butyl rubber, generating brominized butyl rubber, solution method steps to dissolve and brominized, and washing, solvent exchange and product recycling。Not only keep the BIIR IIR original permeability, low and high attenuation, aging resistance, heat resistance, chemical resistance and ozone-resisting performance characteristics, but also adds to the ordinary IIR possesses the characteristics of sulfiding agent, and speed, Use all sorts of sulfiding agent vulcanization, With natural rubber (NR), butylbenzene rubber (SBR), NBR (NBR) and neoprene (CR)；and etc. BIIR itself and other rubber vulcanization good bonding performance is poorer; IIR, Excellent heat-resistant than IIR. Brominized butyl rubber is mainly used in radial tire and bias tyre, the air layer (layer), lining sidewall and heat-resistant tube, container liner, cork, mechanical cushion etc.

Key Words: Brominzed butyl rubber；synthesis；application