环氧树脂多孔复合材料的制备及性能
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TQ174.6

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广州市科技计划项目(No.201510010183)


Fabrication and Properties of Porous Epoxy Composites
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    摘要:

    以环氧树脂、蓖麻油酸(RA)或二聚蓖麻油酸(DRA)改性的四乙烯五胺(TEPA)固化剂(RATEPA\DRATEPA)、水及无机填料釉粉为原料,通过树脂-水-填料悬浮乳液复合体系聚合法,在室温下合成了环氧树脂多孔材料,并对孔径分布、孔结构、孔隙率、材料的机械性能及热性能进行了表征和测试。结果表明:随着水相质量分数和填料粒径的增大,多孔材料的孔径和孔隙率增大,压缩强度减小;随着固化剂分子量的增大,多孔材料的孔径和孔隙率减小,压缩强度增大。当填料粒径为40μm,固化剂为RATEPA,m(水):m(树脂)=2:1时,多孔材料的综合性能最佳,其孔径为3.449μm,孔隙率为21.8%,压缩强度为26.89MPa。TGA和DTG测试结果表明环氧树脂多孔材料在379oC之前能够保持良好的热稳定性,具有耐高温性能。

    Abstract:

    The porous epoxy materials were successfully fabricated using epoxy, curing agents (RATEPA and DRATEPA) prepared with ricinoleic acid (RA) or dimerization ricinoleic acid (DRA) and tetraethylenepentamine (TEPA), glaze powder as filler and water via epoxy-water-filler suspended emulsion polymerization at ambient temperature. Pore size distribution, structure of the pore, porosity, mechanical properties and thermal properties of porous epoxy material were characterized in the present research. The results revealed as the mass ratio of aqueous phase to epoxy phase and particle size of glaze powder increased, the pore size and porosity increased and the compressive strength decreased. Meanwhile, the pore size and porosity decreased and the compressive strength increased as the molecular weight of the curing agent increased. When the particle size of glaze powder is 40μm, the curing agent is RATEPA, the mass ratio of aqueous phase to epoxy phase was 2:1, the overall performance of the porous epoxy materials reached to a relatively excellent stage: the pore size is 3.449μm, the porosity is 21.8%, the compressive strength is 26.89MPa. The TGA results indicated that the resulting porous epoxy material showed excellent thermal properties before the temperature reached 379oC

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陈建军,黄月文,方天勇,王斌.环氧树脂多孔复合材料的制备及性能[J].精细化工,2017,34(5):

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  • 收稿日期:2016-08-23
  • 最后修改日期:2016-10-20
  • 录用日期:2016-12-14
  • 在线发布日期: 2017-04-07
  • 出版日期: