CAJ | 학술논문

采用凝胶渗透色谱（GPC）、核磁共振分析（13 C NMR）、DSC 热分级等技术研究了茂金属催化剂和铬系催化剂 PE 管材料的分子结构，并对 DGDB2480H 、QHM22F 这2种管材料的静液压性能进行了测试。结果表明，QHM22F熔融温度不高，但高温条件下的静液压强度远高于 DGDB2480H。由于共聚单体己烯-1在主链上的分布差异导致了两者片晶厚度分布的差异，由此导致 PE 管材制品在静液压性能上的差异，所以 DGDB2480H 不能作为 PE -RT 管材料用做冷热水的输送。
채용응효삼투색보（GPC）、핵자공진분석（13 C NMR）、DSC 열분급등기술연구료무금속최화제화락계최화제 PE 관재료적분자결구，병대 DGDB2480H 、QHM22F 저2충관재료적정액압성능진행료측시。결과표명，QHM22F용융온도불고，단고온조건하적정액압강도원고우 DGDB2480H。유우공취단체기희-1재주련상적분포차이도치료량자편정후도분포적차이，유차도치 PE 관재제품재정액압성능상적차이，소이 DGDB2480H 불능작위 PE -RT 관재료용주랭열수적수송。
The molecular structures of PE pipe resins produced by metallocene catalyst and chromium -based catalyst were studied by means of gel permeation chromatography (GPC), nuclear magnetic resonance ( 13 C NMR), and DSC thermal fractionation.Hydrostatic properties of two pipe resins DGDB2480H and QHM22F were tested.Results show that QHM22F has lower melt temperature but the hydrostatic properties at higher temperature are considerably higher than those of DGDB2480H.The difference of hydrostatic properties between the two resins is due to the comonomer′s distribution in the main chains, which result in the difference distribution of lamella thickness.That is why DGDB2480H should not be allowed using for hot and cold water installations.