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    Low shrink low density laminate formulation
    2.
    发明申请
    Low shrink low density laminate formulation 审中-公开
    低收缩低密度层压制品

    公开(公告)号：US20080090060A1

    公开(公告)日：2008-04-17

    申请号：US11953895

    申请日：2007-12-11

    申请人： Hamid Kia ,  Harry Mitchell ,  Terrence Wathen ,  Mark Buffa

    发明人： Hamid Kia ,  Harry Mitchell ,  Terrence Wathen ,  Mark Buffa

    IPC分类号： B32B7/02 ,  B05D1/36

    CPC分类号： B29C70/086 ,  B29C37/0067 ,  B29C70/30 ,  Y10T428/24967 ,  Y10T428/26

    摘要： Composite articles are prepared by a spray up operation. In a first step, a gel coat is applied onto a mold surface which has been optionally pretreated with a mold release coating. Next, a barrier coat is applied over the gel coat in the mold and thereafter a laminate formula is applied over the barrier coat. The laminate contains from 40-80% by weight paste and from 20-60% by weight reinforcing fibers. In a preferred embodiment, the paste comprises 90% or more by weight resin, up to 10% filler, and an initiator composition capable of initiating cure at a temperature of 50° C. or lower. In a preferred embodiment, the multilayer composite has a thickness of about 15 mm or less, and is useful as an automobile body panel. The laminate preferably comprises a low shrink, low density glass fiber filled polyester resin. In a preferred embodiment, the paste of the laminate contains a dicyclopentadiene unsaturated polyester resin, polymeric hollow microspheres, and an initiator capable of initiating curing at room temperature or at temperature of 50° C. or less.

    摘要翻译： 复合制品通过喷雾操作制备。 在第一步骤中，将凝胶涂层施加到已经任选地用脱模涂层预处理的模具表面上。 接下来，在模具中的凝胶涂层上施加阻隔涂层，然后将层压配方施加在阻挡涂层上。 该层压板包含40-80重量％的浆料和20-60重量％的增强纤维。 在一个优选的实施方案中，糊料包含90重量％或更多的树脂，至多10重量％的填料，以及能够在50℃或更低的温度下起始固化的引发剂组合物。 在优选的实施方案中，多层复合材料具有约15mm或更小的厚度，并且可用作汽车车身面板。 层压体优选包括低收缩，低密度玻璃纤维填充的聚酯树脂。 在优选的实施方案中，层压体的糊料含有二环戊二烯不饱和聚酯树脂，聚合物中空微球体和能够在室温或50℃或更低温度下引发固化的引发剂。