基于阀体制造的先进树脂基复合材料性能研究

研究了不同改性方法对酚醛团状膜塑料（BMC）、酚醛片状膜塑料（SMC）、乙烯基SMC材料力学性能的影响，分析了树脂基与纤维相的改性作用机制，得到了三者中具有最佳力学性能的复合材料，并通过仿真分析验证了不同复合材料用于制造阀体的可行性。结果表明，3种材料的拉伸性能为乙烯基SMC>酚醛BMC>酚醛SMC，弯曲性能为酚醛BMC>乙烯基SMC>酚醛SMC，乙烯基SMC的综合力学性能最佳；成型温度为160 ℃、模压压力为9 MPa、保温时间为30 min时，乙烯基SMC的拉伸强度、拉伸模量、弯曲强度、弯曲模量分别达到148.26 MPa、4.50 GPa、92.33 MPa、2.39 GPa；阀体静力学分析结果表明，乙烯基SMC与酚醛BMC均满足阀体制造要求。

Study on properties of advanced resin matrix composites for valve body manufacturing

In this article， the effect of modification methods on the mechanical properties of phenolic bulk film plastics （BMC）， phenolic sheet film plastics （SMC） and vinyl SMC materials were studied， and the interaction mechanism of modification for the resin matrix and fiber phase was analyzed quantitatively. The optimal mechanical properties were obtained for the composites， and the feasibility for manufacturing the valve body using different composites was verified by simulation analysis. The results indicated that the vinyl SMC material achieved optimal tensile properties， but the phenolic SMC showed the worst one. On the other hand， the phenolic BMC material showed the optimal bending mechanical properties， whereas the phenolic SMC showed the worst ones. In summary， the vinyl SMC exhibited the best comprehensive mechanical properties. The tensile strength， tensile modulus， flexural strength， and flexural modulus of the vinyl SMC reached 148.255 MPa， 4.50 GPa， 92.33 MPa， and 2.39 GPa respectively at a molding temperature of 160 ℃， a molding pressure of 9 MPa， and a holding time of 30 min. The valve body statics analysis results showed that both the vinyl SMC and the phenolic BMC could meet a requirement for the manufacture of the valve body.