采用溶剂分离法分离紫胶片得到的硬树脂含量为65.1%，软树脂含量为28.2%。
In the lac resin, the content of hard resin is 65.1%, the content of soft resin is 28.2%.
紫胶硬树脂改性酚醛树脂和普通酚醛酚醛树脂的红外光谱图谱基本一致；
The IR analysis discovers the component of the modification of PF resin with hard resin and general PF resin is almost alike.
紫胶硬树脂由软树脂多聚而成，该聚合过程以树脂的羟基参与反应为特征。
The hard resin was formed by polymerization of the soft resin in the presence of hydroxyl groups.
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