乙烯酯类 meaning in Chinese
vinyl esters
Examples
- For the sample with poly ( vinyl acetate ) based lpas , the morphology exists two transition points with the increase of lpa concentration
对于含聚醋酸乙烯酯类lpa的试样，形态随着加入浓度的增加存在两次明显的转变。 - For poly ( vinyl acetate ) based lpas , it seemed that lpas with higher molecular weights worked better than that with the lower molecular weights and lpa with low molecular weights need high concentration for good shrinkage control
对于聚苯乙烯类的lpa - c ，试样收缩控制效果随着lpa - c浓度的增加而增强；对于聚醋酸乙烯酯类的lpa ，分子量较高的lpa比分子量较低的lpa的收缩控制效果好；分子量较低的lpa若要达到较好的收缩控制效果则需要较高的浓度。 - In the volume change study , we found appropriate temperature is helpful for shrinkage control , and different lpas have different shrinkage control effects due to their dipole moment , tg , miscibility with upr and morphology after blending . there existed an optimal concentration range of poly ( vinyl acetate ) based lpas for shrinkage control . lpa was effective for shrinkage compensation in this range , on the other hand , lpa only acted as filler and the low profile effect vanished out of this range , however , for polystyrene based lpa , the more concentration the better shrinkage control
在膨胀研究中，发现适当的温度条件更有利于upr达到好的收缩控制效果；不同类型的lpa随着偶极矩、玻璃化温度、与upr的相容性、与upr的混合形态的不同，表现出不同的收缩控制效果；聚醋酸乙烯酯类的lpa - a存在一个最佳收缩控制的浓度范围，在这个范围之内， lpa起到补偿收缩的作用；而在这个范围之外， lpa的作用仅相当于填料，不能起到收缩控制。 - A detailed study of the morphology of low - profile unsaturated polyester resins after cure at low - medium temperature was carried out . the experimental results show that the influence of temperature on morphology of cured sample was smal 1 for poly ( vinyl acetate ) based lpas but large for polystyrene based lpa
文章详细研究了低轮廓不饱和聚酯树脂中低温下固化试样的形态，实验结果表明：温度对加入聚醋酸乙烯酯类lpa试样的固化形态影响不大，而对加入聚苯乙烯类lpa试样的固化形态则有较大的影响。