摘要
介绍了可变纤维增强反应注射成型聚氨酯制品的生产工艺特点及制品性能。这种加工技术制造SRIM聚氨酯制品的特点是 ,聚氨酯注入到模具中之前 ,先在混料腔内与直接添入的切碎纤维浸润混合 ,减少了纤维毡垫的加工工序 ,还可以提高制品中纤维的含量。采用这种方法可添加高至 5 0 %的玻璃纤维 ,制品密度从 0 .5g/cm3 至 1.6g/cm3 ,具有较高的弯曲模量。
The advantage of variable fiber injection technology and the properties of the products were introduced. These processes permit addition of chopped reinforcing fibers directly into the mixhead allowing for in situ wetting of the fiber by the polyurethane resin before deposition into a mold. This approach to produce SRIM composites has the advantages of reducing the labor required in the production process and allowing for higher fiber loading. The fiberglass contents can be up to 50% by weight, and part densities range from 0.5 to 1.6 g/cm 3 while with higher flexural modulus.
出处
《聚氨酯工业》
2001年第2期33-35,共3页
Polyurethane Industry
