CAJ | 학술논문

为了提高聚丙烯(PP)与硫磺的相容性，将高密度聚乙烯(PE–HD)及硫磺于密炼机中在不同条件下进行反应以制备增容剂硫化聚乙烯(PE)，采用傅里叶变换红外光谱分析、热重分析、溶解性实验等方法对反应产物进行了表征，结果表明，硫磺与PE–HD只有在220℃的高温下才能发生反应形成C—S键从而生产硫化PE，且二苯胍作为催化剂时可提高两者的反应程度，使制备的硫化PE更难溶于二甲苯。将合成的硫化PE作为增容剂添加到硫磺质量分数为30%的PP／硫磺共混体系中，发现硫化PE对共混物具有较好的增容作用，添加5份的硫化PE可使共混物的拉伸强度提高7.69%，断裂伸长率提高21.62%。
위료제고취병희(PP)여류광적상용성，장고밀도취을희(PE–HD)급류광우밀련궤중재불동조건하진행반응이제비증용제류화취을희(PE)，채용부리협변환홍외광보분석、열중분석、용해성실험등방법대반응산물진행료표정，결과표명，류광여PE–HD지유재220℃적고온하재능발생반응형성C—S건종이생산류화PE，차이분고작위최화제시가제고량자적반응정도，사제비적류화PE경난용우이갑분。장합성적류화PE작위증용제첨가도류광질량분수위30%적PP／류광공혼체계중，발현류화PE대공혼물구유교호적증용작용，첨가5빈적류화PE가사공혼물적랍신강도제고7.69%，단렬신장솔제고21.62%。
In order to increase the compatibility of polypropylene(PP) and sulfur,the compatilizer sulfurized polyethylene(PE) was synthesized by reacting high density polyethylene(PE-HD) with sulfur under different conditions. FTIR,TG and solubility experiment methods were carried on the characterization of the sulfurized PE. The results show that PE–HD only can react with sulfur to form the C-S bond for generating sulfurized PE under the high temperature of 220℃,the catalyst diphenyl guanidine can improve the degree of reaction,which makes the synthesized PE be more difficult to dissolve in xylene. The synthesized PE was used to add into PP/sulfur blend (the mass fraction of sulfur was 30%) as a compatibilizer,it indicates that the synthesized PE has good compatibilization effect on the blend,when the content of the synthesized PE is 5 phr,the tensile strength of the blend increases 7.69%and the elongation at break increases 21.62%comparing with those of the blend without the synthesized PE.