合成树脂及塑料
閤成樹脂及塑料
합성수지급소료
CHINA SYNTHETIC RESIN AND PLASTICS
2015年
1期
10-14
,共5页
聚酰胺%高密度聚乙烯%三元共混物%壳-核形态%冲击韧性
聚酰胺%高密度聚乙烯%三元共混物%殼-覈形態%遲擊韌性
취선알%고밀도취을희%삼원공혼물%각-핵형태%충격인성
polyamide%high density polyethylene%ternary blend%shell-core morphology%impact toughness
分别采用一步法和两步法制备了聚酰胺（PA）6/马来酸酐接枝三元乙丙橡胶（EPDM-g-MAH）/高密度聚乙烯（HDPE）三元共混物，研究了不同加工方法对三元共混物形态和力学性能的影响。结果表明：与一步法相比，采用两步法所制PA6/EPDM-g-MAH/HDPE三元共混物形成了更加完善的壳-核包覆形态；用一步法所制共混物的悬臂梁缺口冲击强度为24.50kJ/m2，约为用两步法所制共混物的1/3；具有壳-核包覆形态的分散相粒子在受到应力时发生纤维化，纤维的形成能够吸收大量的断裂能以及阻止裂纹的扩展，从而提高共混物的韧性。
分彆採用一步法和兩步法製備瞭聚酰胺（PA）6/馬來痠酐接枝三元乙丙橡膠（EPDM-g-MAH）/高密度聚乙烯（HDPE）三元共混物，研究瞭不同加工方法對三元共混物形態和力學性能的影響。結果錶明：與一步法相比，採用兩步法所製PA6/EPDM-g-MAH/HDPE三元共混物形成瞭更加完善的殼-覈包覆形態；用一步法所製共混物的懸臂樑缺口遲擊彊度為24.50kJ/m2，約為用兩步法所製共混物的1/3；具有殼-覈包覆形態的分散相粒子在受到應力時髮生纖維化，纖維的形成能夠吸收大量的斷裂能以及阻止裂紋的擴展，從而提高共混物的韌性。
분별채용일보법화량보법제비료취선알（PA）6/마래산항접지삼원을병상효（EPDM-g-MAH）/고밀도취을희（HDPE）삼원공혼물，연구료불동가공방법대삼원공혼물형태화역학성능적영향。결과표명：여일보법상비，채용량보법소제PA6/EPDM-g-MAH/HDPE삼원공혼물형성료경가완선적각-핵포복형태；용일보법소제공혼물적현비량결구충격강도위24.50kJ/m2，약위용량보법소제공혼물적1/3；구유각-핵포복형태적분산상입자재수도응력시발생섬유화，섬유적형성능구흡수대량적단렬능이급조지렬문적확전，종이제고공혼물적인성。
Polyamide(PA)6/maleic?anhydride?grafted?ethylene-propylene-diene?monomer(EPDM-g-MAH)/high?density?polyethylene(HDPE)?ternary?blends?were?prepared?via?one-?and?tow-step?methods, respectively.?The?effects?of?different?processing?methods?on?morphology?and?mechanical?properties?of?the?ternary?blends?were?studied.?The?results?indicate?that?the?shell-core?coating?morphology?formed?in?the?PA?6/EPDM-g-MAH/HDPE?ternary?blend?prepared?by?two-step?method?is?more?perfect?than?that?prepared?by?one-step?method.?The?Izod?notched?impact?strength?of?the?blend?prepared?by?one-step?method?is?24.50?kJ/m2,which?is?about?one-third?of?that?prepared?by?two-step?method.?The?fibrillation?of?dispersion?phase?particles?with?shell-core?coating?morphology?in?PA?6/EPDM-g-MAH/HDPE?ternary?blend?can?absorb?plenty?of?fracture?impact?energy?and?pre-vent?micro-crack?further?propagating,thus?the?impact?toughness?of?the?ternary?blend?is?increased.
