以下为句子列表:
英文: Abstract: The preparation conditions of unsaturated polyester (UP) resins modified by PET were introduced in this paper.The copolymerization mechanisms of the synthesis of UP resins from cis-and trans-anhydride were researched.The relationship between the
中文: 文摘:本文研究了由聚酯改性合成不饱和聚酯树脂的反应机理和工艺条件,讨论了改性树脂反应活性与不饱和酸结构之间的关系,解释了顺、反式双键结构对改性树脂固化放热特性和反应活性不同的原因。
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