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Influence of TDI concentration on the properties of unsaturated polyester resins

机译:TDI浓度对不饱和聚酯树脂性能的影响

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摘要

Three different unsaturated polyester resins were modified by toluene diisocyanate (TDI). All the resins studied were commercially available. One, 2, and 3% additions of TDI caused important changes of the resins properties. With an increase of TDI concentration gelation times increased. Suppression of the exotherm peaks-desired effect from practical point of view-was observed. Unfortunately, increase of TDI concentration caused enormous increase of the resins viscosity. Additionally the resins with 3% of TDI exhibit thixotropic properties. (C) 2000 John Wiley & Sons, Inc. [References: 17]
机译:甲苯二异氰酸酯(TDI)对三种不同的不饱和聚酯树脂进行了改性。所有研究的树脂都是可商购的。加入1%,2%和3%的TDI会引起树脂性能的重大变化。随着TDI浓度的增加,胶凝时间增加。观察到放热峰的抑制-从实践的角度来看期望的效果。不幸的是,TDI浓度的增加导致树脂粘度的极大增加。另外,具有3%TDI的树脂具有触变性。 (C)2000 John Wiley&Sons,Inc. [参考:17]

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