CAJ | 학술논문

采用发散法由乙二胺和丙烯酸甲酯合成了树状聚酰胺-胺(PAMAM).以PAMAM作为环氧树脂(EP)的固化剂,用差示扫描量热法确定其固化工艺及固化物的玻璃化转变温度(T_g),探讨了树状PAMAM用量对固化物力学性能的影响.结果表明,PAMAM与EP的质量比为0.26时,固化物的力学性能最佳,其冲击强度为166.43 kJ/m~2,拉伸强度为43.54 Mpa;明显高于低分子量聚酰胺/EP固化物的冲击强度和拉伸强度.
채용발산법유을이알화병희산갑지합성료수상취선알-알(PAMAM).이PAMAM작위배양수지(EP)적고화제,용차시소묘량열법학정기고화공예급고화물적파리화전변온도(T_g),탐토료수상PAMAM용량대고화물역학성능적영향.결과표명,PAMAM여EP적질량비위0.26시,고화물적역학성능최가,기충격강도위166.43 kJ/m~2,랍신강도위43.54 Mpa;명현고우저분자량취선알/EP고화물적충격강도화랍신강도.
Dendritic Poly(amidoamine) (PAMAM) with peripheral amimo groups was synthesized with ethylenediamine and methyl acrylate. Using PAMAM as epoxy resin curing agents, the curing processing and the glass translation temperature (T_g) were determined by DSC. The influence of PAMAM contents on the mechanical properties of cured resin was studied. The results showed that, the optimum mechanical properties were obtained at the mass ratio of PAMAM to epoxy resin for 0.26, the impact strength was 166.43 kJ/m~2 and the tensile strength was 43.54 Mpa, the tensile strength and impact strength was significantly higher than that of cured resin of low molecule polyamide/EP.