一种例外的类型是硅树脂，其链上的碳原子被硅取代作为链中的基本原子。
An exceptional type is represented by silicone resins, in which carbon is replaced by silicon as the basic atom in the chain.
反应以自由基机理进行，溴取代主要发生在主链上的叔氢原子上。
Thesubstitution of bromine atoms is on the tertiary carbon of main-chain of the polymersprimally.
寻求新的合成方法、向聚合物主链上引入取代基、质子酸掺杂和实现高聚物及其衍生物之间的相互共聚等都是解决此类问题常用的方法。
Seek a new synthesizing method, develop the substituents of these polymers and copolymerization have been a useful method to solving this kind of problems.
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