Cad iad na greamacháin d'ábhair cuimilte?
All media materials that can connect the same or different types of materials together are called adhesives, also known as adhesives. It is an old and young science. The so-called "old" refers to the fact that thousands of years ago, humans began to use natural polymers such as animal glue and vegetable glue to bond products and production tools. Until the beginning of the last century, due to the appearance of various synthetic resins and synthetic rubbers, especially the successful production and commercialization of some representative polymers such as phenolic resin, epoxy resin, chloroprene rubber, nitrile rubber, etc., modern adhesives have The comprehensive properties of high strength, durability, and outstanding heat resistance have developed rapidly.
Is é an príomhchóras atá déanta ag greamachán ábhar frithchuimilte ná cineál roisín, cineál rubair agus cineál ilchodach roisín agus rubair. Tá an chuid is mó de ghreamaithe déanta as ábhair pholaiméireacha, agus ní mór cuid acu roinnt tuaslagóirí a chur leis chun an leigheas a chomhlánú trí imoibrithe ceimiceacha nó éifeachtaí fisiceacha, agus tarlaíonn leigheas go mall le linn an ghreamaitheach a stóráil. Dá bhrí sin, tá tréimhse stórála áirithe ag an ghreamaitheach, a bhaineann leis na coinníollacha stórála, mar shampla taise, teocht, aeráil agus mar sin de. D'fhonn a áirithiú go bhfanann feidhmíocht an ghreamaitheach go bunúsach gan athrú laistigh den am sonraithe, is gá aird dhlúth a thabhairt ar an modh cloí leis an ghreamaitheach. Tá coinníollacha stórála éagsúla ag cineálacha éagsúla greamacháin mar gheall ar a saintréithe éagsúla.