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    • 16. 发明授权
    • In-situ gelatinous triblock copolymer elastomers in polyurethane flexible foams
    • 聚氨酯柔性泡沫中的原位凝胶状三嵌段共聚物弹性体
    • US08933139B1
    • 2015-01-13
    • US12713586
    • 2010-02-26
    • Bruce W. PetersonMark Crawford
    • Bruce W. PetersonMark Crawford
    • C08G18/06
    • C08G18/7664C08G18/165C08G18/1825C08G18/1833C08G18/244C08G18/42C08G18/48C08G2101/0008C08G2101/0058C08G2101/0083C08G2190/00C08G2310/00C08G2350/00C08L75/04C08L53/02
    • Combinations of gelatinous elastomer and polyurethane foam may be made by introducing a plasticized A-B-A triblock copolymer resin and/or an A-B diblock copolymer resin into a mixture of polyurethane foam forming components including a polyol and an isocyanate. The plasticized copolymer resin is polymerized to form the gelatinous elastomer in-situ while simultaneously polymerizing the polyol and the isocyanate to form polyurethane foam. The polyurethane reaction is exothermic and can generate sufficient temperature to melt the styrene-portion of the A-B-A triblock copolymer resin thereby extending the crosslinking and in some cases integrating the A-B-A triblock copolymer within the polyurethane polymer matrix. The combination has a marbled appearance. The gel component has higher heat capacity than polyurethane foam and thus has good thermal conductivity and acts as a heat sink. Another advantage of in situ gel-foam is that the gel component provides higher support factors compared to the base foam alone.
    • 凝胶状弹性体和聚氨酯泡沫的组合可以通过将增塑的A-B-A三嵌段共聚物树脂和/或A-B二嵌段共聚物树脂引入到包含多元醇和异氰酸酯的聚氨酯泡沫形成组分的混合物中来制备。 将增塑的共聚物树脂聚合以原位形成凝胶状弹性体,同时聚合多元醇和异氰酸酯以形成聚氨酯泡沫。 聚氨酯反应是放热的并且可以产生足够的温度来熔化A-B-A三嵌段共聚物树脂的苯乙烯部分,从而延长交联,并且在一些情况下将A-B-A三嵌段共聚物整合在聚氨酯聚合物基质内。 该组合有大理石外观。 凝胶组分具有比聚氨酯泡沫更高的热容量,因此具有良好的导热性并用作散热器。 原位凝胶泡沫的另一个优点是与单独的基础泡沫相比,凝胶组分提供更高的支撑因子。