一种高耐热低羟基含磷环氧树脂的合成及性能研究

Synthesis and Properties of a Novel Epoxy Containing Phosphorus with High Heat Resistance and Low Hydroxyl

本文以萘醌、DOPO、酚醛环氧树脂及异氰酸酯为原料,合成了一种高耐热低羟基含磷环氧树脂。将其与酚醛及苯并噁嗪树脂混胶后,浸在玻纤布中经压板固化后,通过示差扫描量热(DSC)测试了板材的玻璃化转变温度T_(g);采用平板电容法测试了树脂的介电性能,并测试了树脂的吸水率、阻燃性能、羟基当量等。结果表明,板材的玻璃化转变温度T_(g)高于170℃,板材具有较低的介电常数和介质损耗,D_(k)<3.50,D_(f)<0.01,吸水率<0.2%,阻燃达到V0级,作为覆铜板的基础树脂材料时,具有低介电、低介损、高T_g、低吸水、V0级阻燃等优良的综合性能。

A novel phosphorus-containing epoxy with high heat resistance and low hydroxyl was synthesized from naphthoquinone,DOPO,phenolic epoxy and isocyanate.The glass transition temperature T_(g) and dielectric properties of the resin were measured by differential scanning calorimetry(DSC)and plate capacitance method,respectively.The results showed that the glass transition temperature T_(g) was higher than 170℃,the dielectric constant and dielectric loss were lower,D_(k)<3.50,D_(f)<0.01,water absorption<0.2%,and the flame retardant was V0.When it was used as copper clad laminate base resin material,it had low dielectric,low dielectric loss,high T_(g),low water absorption,V0 flame retardant and other excellent comprehensive properties.