采用折光指数控制法研究了改性氰酸酯树脂体系的预聚效果.结果表明:当折光指数在 1.574 5～1.578 5 时,改性氰酸酯树脂的软化点可控制在 25～30℃,室温铺覆性能良好.力学性能及耐环境性研究表明 M40/BADCy 复合材料的层间剪切强度可达到67.8 MPa.高低温交替变化及紫外线老化对 M40/BADCy 复合材料的力学性影响很小.M40/BADCy 复合材料水煮 100 h 后的吸水率小于0.94%,其层间剪切强度仅下降18%.
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