Effect of Low Molecule Polyamide and Nano-SiO_2 on Properties of the Poly (MMA/BA/MAA)

Effects of low molecule polyamide （LMPA） and namometer SiO2 particles on the properties of the poly （MMA/ BA/MAA） adhesive for wearable and nonskid PVC （polyvinyl carbazole） materials were investigated. The experimental results show that the shear strength of poly （MMA/BA/MAA）/LMPA is increased, when the LMPA is added into poly （MMA/BA/MAA）. The optimum addition of LMPA is about 4 wt pct. By adding 3 wt pct nano-SiO2 into poly （MMA/BA/MAA）/LMPA adhesive, its properties such as the shear strength, thermal stability, wear resistance and sea waterproof resistance are increased too.

低分子聚酰胺贮藏过长对环氧树脂固化性能的影响

贮藏几年的低分子聚酰胺作为室温固化剂和环氧成浇灌绝缘材料，发现固化产物的抗剪、耐水性降低、测量发现其胺值下降，经红外光谱分析，用它和环氧固化。