广州化工
廣州化工
엄주화공
Guangzhou Chemical Industry
2015年
22期
90-91,170
,共3页
环氧密封胶%快速固化%聚氨酯改性环氧树脂%抗冲击性能
環氧密封膠%快速固化%聚氨酯改性環氧樹脂%抗遲擊性能
배양밀봉효%쾌속고화%취안지개성배양수지%항충격성능
epoxy sealant%fast-curing%polyurethane modified epoxy resin%impact strength
以DER331、 DER791为基体,692为稀释剂,纳米二氧化硅、纳米碳酸钙、重钙为填料,聚硫醇与聚醚胺为复配固化剂,研究了促进剂DMP-30添加量对凝胶时间及剪切强度的影响, CYH-277、聚氨酯改性环氧树脂添加量对环氧密封胶抗冲击性能的影响, AB组分配比对环氧密封胶剪切强度的影响。结果表明： DMP-30可提高环氧密封胶的固化速度, CYH-277对聚硫醇/聚醚胺体系的抗冲击性能影响不明显,聚氨酯改性环氧可提高聚硫醇/聚醚胺体系的抗冲击性能, A/B组分配比值在0.9~1.1时,固化时间和凝胶时间最小,环氧密封胶的剪切强度也最大,环氧胶可在30 min固化。
以DER331、 DER791為基體,692為稀釋劑,納米二氧化硅、納米碳痠鈣、重鈣為填料,聚硫醇與聚醚胺為複配固化劑,研究瞭促進劑DMP-30添加量對凝膠時間及剪切彊度的影響, CYH-277、聚氨酯改性環氧樹脂添加量對環氧密封膠抗遲擊性能的影響, AB組分配比對環氧密封膠剪切彊度的影響。結果錶明： DMP-30可提高環氧密封膠的固化速度, CYH-277對聚硫醇/聚醚胺體繫的抗遲擊性能影響不明顯,聚氨酯改性環氧可提高聚硫醇/聚醚胺體繫的抗遲擊性能, A/B組分配比值在0.9~1.1時,固化時間和凝膠時間最小,環氧密封膠的剪切彊度也最大,環氧膠可在30 min固化。
이DER331、 DER791위기체,692위희석제,납미이양화규、납미탄산개、중개위전료,취류순여취미알위복배고화제,연구료촉진제DMP-30첨가량대응효시간급전절강도적영향, CYH-277、취안지개성배양수지첨가량대배양밀봉효항충격성능적영향, AB조분배비대배양밀봉효전절강도적영향。결과표명： DMP-30가제고배양밀봉효적고화속도, CYH-277대취류순/취미알체계적항충격성능영향불명현,취안지개성배양가제고취류순/취미알체계적항충격성능, A/B조분배비치재0.9~1.1시,고화시간화응효시간최소,배양밀봉효적전절강도야최대,배양효가재30 min고화。
Epoxy sealant were prepared using DER 331 and DER791 as matrix, nano SiO2 , nano CaCO3 and calcium carbonate as fillers, polymercaptans curing agent and polyetheramine as composite curing agents. The effect of DMP-30 contents on gel time and shear strength, the effect of CYH-277 and Polyurethane modified epoxy resin contents on impact strength of epoxy sealant, and the effect of A/B ratio on the shear strength of epoxy sealant were studied. The results indicated that DMP-30 can shorten curing time. Polyurethane modified epoxy resin can obviously improve the impact strength of epoxy sealant. When the ratio of A/B epoxy sealant was 0. 9~1. 1 , the bonding performance was best. The epoxy sealant can cures within 30 min at room temperature.
