He aha nā resins i hoʻohana ʻia i nā uhi lepo thermoplastic

ʻEkolu mau resins mua i hoʻohana ʻia ma uhi pauda thermoplastic, vinyls, nylons a me nā polyesters. Hoʻohana ʻia kēia mau mea no ka hoʻopili ʻana i nā meaʻai, nā lako kahua pāʻani, nā kaʻa kūʻai, nā papa halemai a me nā noi ʻē aʻe.

He liʻiliʻi o nā thermoplastics ka laulā o nā ʻano hiʻohiʻona, nā waiwai hana a me ke kūpaʻa e koi ʻia i nā noi e hoʻohana ana i nā pauka thermoset.

ʻO nā pauka Thermoplastic ka mea maʻamau i nā mea kaumaha molekala kiʻekiʻe e pono ai ka wela kiʻekiʻe e heheʻe a kahe. Hoʻohana maʻamau ʻia lākou e ka hoʻohana ʻana i ka moena i hoʻoheheʻe ʻia a ʻo nā ʻāpana ʻelua i hoʻomehana ʻia a ma hope o ka wela.

ʻO ka hapa nui o nā mea hoʻoheheʻe thermoplastic i loaʻa nā waiwai adhesion marginal no laila pono e puhi ʻia ka substrate ma mua o ka noi ʻana.

Hoʻohui mau ʻia nā pauka Thermoplastic. ʻO ia hoʻi, i ka wā i wela ai, hiki iā lākou ke hoʻomaʻamaʻa hou ʻia i nā ʻano like ʻole e like me ka makemake o ka mea hoʻohana. ʻO ka ʻokoʻa, ʻaʻole hiki ke hoʻomaʻamaʻa hou ʻia nā pauka thermoset, i hoʻokahi manawa i wela a hoʻoheheʻe ʻia i loko o nā ʻano kikoʻī, me ka ʻole o ka ʻā ʻana a i ʻole ka haki ʻana. ʻO ka wehewehe kemika no kēia ʻano, ʻo nā molekala i loko o nā thermoplastics e huki nawaliwali kekahi i kekahi akā i loko o kahi thermoset ua hoʻopili ʻia lākou.

Hoʻopili a hoʻopaʻa pū nā pūʻali Van der Waals i nā molekala. No ka mea ua wehewehe ʻia nā thermoplastics e nā ikaika van der Waals nāwaliwali, ʻo nā kaulahao molekala i hana i nā thermoplastics hiki iā lākou ke hoʻonui a maʻalahi. Ma ka ʻaoʻao ʻē aʻe, i ka wā e wela ai nā pauka thermosetting, hoʻopā kemika lākou, a ʻike ʻia ka pūhui hou e nā pūʻali ikaika van der Waals. Ma kahi o ka hana ʻana i nā kaulahao lōʻihi, hana lākou i nā molekala i ke ʻano crystalline, e hana paʻakikī i ka huahana ke hana hou a hoʻoheheʻe hou ʻia ke hoʻōla ʻia.