共查询到19条相似文献,搜索用时 78 毫秒
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介绍了超低聚合度PVC树脂、高表观密度PVC树脂、消光PVC树脂、超高聚合度PVC树脂及高抗冲PVC树脂等几种专用PVC树脂的国内外生产、工艺、产品型号及应用情况。 相似文献
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综述了热塑性树脂增韧改性双马树脂的研究进展。体系增韧效果与相态结构、界面粘合、热塑性粒子的延展性和双马基体的延展性有关。影响相态结构的因素包括热塑性树脂添加量、热塑性树脂分子质量及其与双马树脂的相容性。 相似文献
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氰酸酯树脂的改性研究 总被引:2,自引:0,他引:2
本文介绍了目前氰酸酯(CE)树脂的几种改性方法,包括热固性树脂、热塑性树脂、橡胶弹性体、晶须及含不饱和双键的化合物等改性方法,其中主要阐述了环氧树脂(EP)和双马来酰亚胺树脂(BMI)改性氰酸酯树脂(CE)的反应机理及共聚体系的性能,指出了上述各种增韧改性方法的优缺点,并展望了了氰酸酯树脂的研究发展前景。 相似文献
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玻璃钢复合材料基体树脂的发展现状 总被引:8,自引:4,他引:8
本文主要介绍玻璃钢复合材料基体树脂近几年发展情况,介绍基体树脂改性和应用,主要包括:不饱和聚酯树脂、环氧树脂、乙烯基酯树脂、酚醛树脂,还简单介绍了热塑性基体树脂及应用。 相似文献
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试验选用异丁醇醚化的三聚氰胺甲醛树脂分别与醇酸树脂、环氧树脂和丙烯酸树脂进行复配制漆,对这3类氨基涂料综合性能进行了考察。试验表明,当与醇酸树脂复配时树脂配比为1∶3、溶剂用量在6%~10%时涂膜性能较好;与环氧树脂复配时树脂配比为3∶1时涂膜性能最佳,添加萘酸钙催干效果较好;与含羟基丙烯酸树脂复配时树脂配比为1∶3时涂膜性能最佳。 相似文献
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The degree of resin cure achievable in urea formaldehyde (UF) resin is known to influence the hydrolytic stability of UF resin. In the current study, a significant difference in water extractable resin components has been observed between cured pure resin and that from medium density fiberboard (MDF) panels. Results show some 50 to 70% of resin components may be removed on water extraction from resinated MDF fiber and panel samples. In contrast, cured pure UF resins have only a small fraction of resin mass extractable into water with nitrogen-containing components remaining incorporated into the cured resin. The relatively high resin mass losses from panel material together with loss of nitrogen-containing components suggest not only free urea, but urea-methylene species are labile and readily extractable into water. Wax contributes to differing panel extractability when pressed at either 100 or 160°C, whereas panel resin loading has a significant effect on extractable resin components. A lower resin loading led to relatively greater resin extractability, which was corroborated by the extractability of resin-fiber mixtures up to 50% resin content. An assessment of extracted panel residues suggests a relative decrease of urea and urea-formaldehyde condensation products after water extraction. With UF resin highly mobile on fiber during MDF manufacture, the results suggest resin components may separate, leading to their incomplete incorporation into a cured, cross-linked UF resin matrix, with an implication that resin cure on fiber may not be complete compared to that found with pure resin. 相似文献
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环氧及酚醛树脂增韧改性氰酸酯树脂研究 总被引:6,自引:0,他引:6
用环氧树脂(EP)及酚醛树脂(PF)对氰酸酯树脂(CE)进行增韧改性,对改性CE的凝胶时间和DSC曲线进行研究并确定了改性CE的固化工艺。红外光谱分析表明改性CE固化时形成了柔韧性结构。研究了改性CE的力学性能、热性能、电性能及微观形态,发现EP的加入可增加CE的柔韧性,PF的加入可使CE的热稳定性损失减小。当CE/EP/PF的质量比为70/15/15时改性CE的弯曲强度和冲击强度分别从改性前的123.6 MPa、5.2 kJ/m2提高到134.5 MPa、16.7 kJ/m2,耐热性及电性能改变不大。 相似文献
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用石油树脂代替古马隆树脂作橡胶软化剂的研究 总被引:2,自引:0,他引:2
将等量的石油树脂和古马隆树脂分别配制成橡胶胶料,在同等条件下炼胶、硫化,按照橡胶软化剂的性能采用古马隆树脂胶的分析标准进行检测。经实验数据的对比分析,证实了石油树脂作为橡胶软化剂,完全可以代替古马隆树脂,而且优于古马隆树脂。 相似文献