軌道交通供電設(shè)備用膠粘劑強(qiáng)度和熱機(jī)械性能影響研究

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中圖分類號(hào)： TQ437+ .6 文獻(xiàn)標(biāo)志碼：A文章編號(hào)：1001-5922（2025）07-0037-04

Abstract：The efect of diluent type on apparent properties，bond strength，hardness，adhesion，hygroscopicity，and thermomechanical properties was studied.The results showed thatthe type of diluent had a significant impact on the apparent properties of the adhesive，with 669，692 and OXA as diluents having beter apparent properties and ECC having the shortest geling time whenECC wasusedas diluent.The finaladhesive strength of theadhesive specimens was EP3，OXA，669 and 692in descending order，but the bonding and seting time of the adhesive specimens was long（≥3O min）when OXA was used as a diluent.When EP3，669，692 and DOX were used as diluents，the pencil hardness of the adhesive samples was 2 H，and the orderof Shore hardness was EP3，DOX，669，OXA，692， and the adhesion of the adhesive samples was grade 2 when EP3，669 and DOX were used as diluents.When 669 and 692 are used as diluents，the impact strength of the adhesive specimen was higher than 100J/cm2 . Adhesives with EP3 and 692 as diluents had lower glass transition temperatures and crosslinking densities than adhesives with 669 as diluents.

Key words ：diluent ； adhesive ;apparent performance ; mechanical properties ; moisture absorption performance

膠粘劑作為一種能夠通過粘附力和內(nèi)聚力將不同類型的物體粘合在一起的物質(zhì)[1]，在現(xiàn)代城市軌道交通供電設(shè)備中應(yīng)用較為廣泛，這主要是因?yàn)槌鞘熊壍澜煌ü╇娫O(shè)備中零部件較多，不同種類和不同材質(zhì)的零部件在安裝和維護(hù)過程中不可避免地需要進(jìn)行連接2；而焊接等方式的連接會(huì)造成零部件基本物性的改變且不易在尺寸較小的零部件中使用，因此，較為適宜的方法是選擇合適的膠粘劑進(jìn)行連接[3-5]。（剩余6509字）