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不饱和聚酯树脂是热固性树脂主要品种之一。纯不饱和聚酯树脂固化后成为热固性材料,其力学强度较低,难以满足大部分应用领域的要求,一般要用玻璃纤维增强使其成为一种复合材料。不饱和聚酯树脂主要分为增强和非增强系列,可广泛应用于工业、农业、交通、运输等诸多领域。目前我国不饱和聚酯树脂年产能力为70万～80万t,年产量为50万～60万t,生产厂约400家,其中万t级以上企业有十几家。我国目前能自给自足的不饱和聚酯树脂有:玛瑙树脂、人造大理石树脂、纽扣树脂、宝丽板树脂、挤拉用树脂、SMC(片状模塑料)用树脂 DMC(团状模塑料)用树脂 缠绕
Unsaturated polyester resin is one of the main varieties of thermosetting resins. Pure unsaturated polyester resin becomes a thermosetting material after curing, its mechanical strength is low, it is difficult to meet the requirements of most applications. Generally, glass fiber reinforced to make it a composite material. Unsaturated polyester resin is divided into enhanced and non-enhanced series, can be widely used in industry, agriculture, transportation, transportation and many other fields. At present, China’s unsaturated polyester resin production capacity of 700,000 to 800,000 t, the annual output of 500,000 to 600,000 t, about 400 production plants, of which more than ten thousand t-level enterprises have more than a dozen. At present, China can be self-sufficient unsaturated polyester resin: onyx resin, artificial marble resin, button resin, Polaroid resin, pultrusion resin, SMC (sheet molding plastic) with resin DMC Resin winding