He aha nā mea o nā huahana plastic?

He aha nā mea o nā huahana plastic?

Hoʻokaʻawale nui ʻia nā huahana plastik i ʻelua ʻano o ka thermoplastic a me ka thermosetting, ʻo ia ka ʻōlelo kikoʻī kikoʻī, manaʻo wau e kōkua.

1. Thermoplastic

ʻO Thermoplastics, i ʻike ʻia he resins thermoplastic, ʻo ia ka māhele nui o nā plastics.Hana ʻia lākou me nā mea polymer synthetic hiki ke kahe kekahi i kekahi ma ka hoʻoheheʻe ʻana me ka wela a hiki ke hoʻōla hou.Loaʻa maʻamau kēia mau mea i ke kaumaha molekala kiʻekiʻe a loaʻa i kahi ʻano kaulahao molecular repetitive.Hiki ke hana ʻia nā Thermoplastics e ka hoʻoheheʻe ʻana, extrusion, blow molding, calendering a me nā kaʻina hana ʻē aʻe e hana i nā ʻāpana a me nā huahana o nā ʻano like ʻole a me nā nui.

(1) Polyethylene (PE): ʻO PE kekahi o nā plastics maʻamau, hoʻohana nui ʻia i ka hoʻopili ʻana, nā paipu, nā insulators uea a me nā kumu ʻē aʻe.E like me kona ʻano mole a me kona ʻano, hiki ke hoʻokaʻawale ʻia ka PE i ka polyethylene high density (HDPE), polyethylene haʻahaʻa haʻahaʻa (LDPE) a me ka polyethylene haʻahaʻa haʻahaʻa laina (LLDPE).

Polypropylene (PP) : ʻO ka PP ka plastic maʻamau, hoʻohana mau ʻia i loko o nā ipu, ʻōmole, a me nā mea lapaʻau.ʻO ka PP he semi-crystalline plastic, no laila ʻoi aku ka paʻakikī a ʻoi aku ka ʻike ma mua o ka PE.

(3) Polyvinyl chloride (PVC): ʻO PVC kekahi o ka hana kiʻekiʻe loa o ka honua i nā plastics, i hoʻohana nui ʻia i nā mea hana, nā insulators uea, ka ʻeke a me nā mea lapaʻau a me nā māla ʻē aʻe.Hiki ke waihoʻoluʻu i ka PVC a kūpaʻa i ka nui o nā kemika.

(4) Polystyrene (PS): Hoʻohana maʻamau ʻia ʻo PS e hana i nā mea hoʻopili māmā a māmā, e like me nā pahu meaʻai a me nā pahu mālama.Hoʻohana nui ʻia ʻo PS e hana i ka ʻūhā, e like me ka EPS foam.

ʻO Acrylonitrile-butadiene-styrene copolymer (ABS) : ʻO ABS ka mea paʻakikī a paʻa i ka hopena i hoʻohana mau ʻia no ka hana ʻana i nā mea paahana, nā hale uila, a me nā ʻāpana kaʻa.

(6) Nā mea'ē aʻe: Eia kekahi, he nui nāʻano thermoplastics, e like me polyamide (PA), polycarbonate (PC), polyformaldehyde (POM), polytetrafluoroethylene (PTFE) a pēlā aku.

2, ka plastic thermosetting

ʻO nā plastic thermosetting kahi papa kūikawā o nā plastics, ʻokoʻa mai nā thermoplastics.ʻAʻole palupalu a kahe kēia mau mea i ka wā i wela, akā hoʻōla ʻia e ka wela.ʻOi aku ka ʻoi aku o ka ikaika a me ka paʻakikī o nā plastic thermosetting a kūpono i nā noi e koi ana i ka lōʻihi a me ka ikaika.

Epoxy resin (EP): ʻO ka epoxy resin he plastic thermosetting paʻakikī i hoʻohana nui ʻia i ke kūkulu ʻana, uila a me nā ʻoihana kaʻa.Hiki i nā epoxy resins ke hana kemika me nā mea ʻē aʻe e hana i nā mea hoʻopili ikaika a me nā uhi.

(2) Polyimide (PI): ʻO ka Polyimide he plastic pale wela loa e hiki ke mālama i kona mau waiwai i nā wela kiʻekiʻe.Hoʻohana nui ʻia ia i ka aerospace, electronics a me nā ʻoihana automotive e hana i nā ʻāpana kūʻokoʻa kiʻekiʻe a me nā uhi.

(3) ʻO nā mea ʻē aʻe: Eia kekahi, he nui nā ʻano ʻano o nā plastic thermosetting, e like me ka phenolic resin, furan resin, unsaturated polyester a pēlā aku.