改性纳米TiO_2的制备及其对聚丙烯的改性研究
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摘要
用溶胶-凝胶法制备纳米二氧化钛(TiO_2),并用硅烷偶联剂γ-甲基丙烯酰氧基丙基三甲氧基硅烷(CG570)和油酸(OA)对其进行表面改性,提高了其亲油性;将改性TiO_2对聚丙烯(PP)进行共混改性制备得到PP复合材料。分别研究改性剂类型和CG570-TiO_2用量对PP复合材料力学性能、耐热性能和结晶性能的影响。研究表明,CG570-TiO_2对PP共混改性效果相对较好;当CG570-TiO_2的用量为3%时,PP复合材料的综合性能最佳;相比于纯PP,其热分解温度、结晶温度和力学性能均有所提高,其中冲击强度提高了35%。
Nano-titanium dioxide( TiO_2) was prepared by sol-gel method and it was modified by γ-methacryloxypropyltrimethoxysilane( CG570) and oleic acid( OA) respectively. The modified TiO_2 with good lipophilicity was used for blending modification of polypropylene( PP),and the PP composites were prepared. The effects of modifier type and the amount of CG570-TiO_2 on the mechanical properties, heat resistance and crystallization properties of PP composites were investigated respectively. The results shows that CG570-TiO_2 has a relative good modification effect on PP blending; when the amount of CG570-TiO_2 is 3%,the comprehensive performance of PP composite material is the best. Compared with pure PP,the thermal decomposition temperature,crystallization temperature and mechanical properties of the PP composites are improved; particularly,the impact strength is increased by 35%.
Nano-titanium dioxide( TiO_2) was prepared by sol-gel method and it was modified by γ-methacryloxypropyltrimethoxysilane( CG570) and oleic acid( OA) respectively. The modified TiO_2 with good lipophilicity was used for blending modification of polypropylene( PP),and the PP composites were prepared. The effects of modifier type and the amount of CG570-TiO_2 on the mechanical properties, heat resistance and crystallization properties of PP composites were investigated respectively. The results shows that CG570-TiO_2 has a relative good modification effect on PP blending; when the amount of CG570-TiO_2 is 3%,the comprehensive performance of PP composite material is the best. Compared with pure PP,the thermal decomposition temperature,crystallization temperature and mechanical properties of the PP composites are improved; particularly,the impact strength is increased by 35%.
引文
[1]郭刚,于杰,罗筑,等.聚丙烯/纳米级金红石型二氧化钛/聚烯烃弹性体复合材料的抗老化性能研究[J].高分子学报,2006(2):219-224.
[2]梅文杰,熊玉竹,刘振宇.Ti O2在PP抗老化中的机理及其研究进展[J].中国塑料,2013,27(1):17-20.
[3]李彩凤,应三九,肖正刚.聚丙烯/纳米二氧化钛复合材料的超临界流体微孔发泡[J].高分子材料科学与工程,2012,28(7):124-127,131.
[4]杨青,张宝华,毛志平,等.聚丙烯/改性纳米二氧化钛复合材料的制备与性能[J].高分子材料科学与工程,2009,25(1):48-51.
[5]王永忠,蒋东升,杨晋涛,等.聚丙烯/载银纳米Ti O2复合材料力学和加工流变性能[J].塑料工业,2008,36(S1):185-187,203.
[6]刘昌贵,伍玉娇,李娟.微波与偶联剂对PP/纳米Ti O2复合材料相容性影响[J].现代塑料加工应用,2012,24(4):42-45.
[7]蒋东升,王永忠,卢康利,等.载银纳米二氧化钛对聚丙烯结晶性能影响[J].中国塑料,2008,22(3):18-22.
[2]梅文杰,熊玉竹,刘振宇.Ti O2在PP抗老化中的机理及其研究进展[J].中国塑料,2013,27(1):17-20.
[3]李彩凤,应三九,肖正刚.聚丙烯/纳米二氧化钛复合材料的超临界流体微孔发泡[J].高分子材料科学与工程,2012,28(7):124-127,131.
[4]杨青,张宝华,毛志平,等.聚丙烯/改性纳米二氧化钛复合材料的制备与性能[J].高分子材料科学与工程,2009,25(1):48-51.
[5]王永忠,蒋东升,杨晋涛,等.聚丙烯/载银纳米Ti O2复合材料力学和加工流变性能[J].塑料工业,2008,36(S1):185-187,203.
[6]刘昌贵,伍玉娇,李娟.微波与偶联剂对PP/纳米Ti O2复合材料相容性影响[J].现代塑料加工应用,2012,24(4):42-45.
[7]蒋东升,王永忠,卢康利,等.载银纳米二氧化钛对聚丙烯结晶性能影响[J].中国塑料,2008,22(3):18-22.