1. Māmā

ʻO ka plastik kahi mea māmā me ka pili pili o 0.90-2.2.ʻIke loa, hiki i nā plastics ke lana ma luna o ka wai?ʻOi aku ka nui o nā plastics foamed, ma muli o nā micropores i loko, ʻoi aku ka maʻalahi o ke ʻano, a ʻo 0.01 wale nō ka nui pili.Hiki i kēia hiʻohiʻona ke hoʻohana i nā plastics i ka hana ʻana i nā huahana e pono ai ka māmā o ko lākou kaumaha ponoʻī.

2. Paʻa kemika maikaʻi loa

ʻO ka hapa nui o nā plastics maikaʻi ke kūpaʻa ʻana i nā kemika e like me nā waikawa a me nā alkalis.ʻO ka mea nui, polytetrafluoroethylene (F4), i kapa ʻia ʻo King of Plastics, ʻoi aku ka paʻa o ke kemika ma mua o ke gula, a ʻaʻole e hōʻino ʻia inā e hoʻolapalapa ʻia i loko o ka "aqua regia" no nā hola he ʻumi.No ka loaʻa ʻana o ka paʻa kemika maikaʻi loa o F4, ʻo ia ka mea kūpono i ka corrosion-resistant.No ka laʻana, hiki ke hoʻohana ʻia ka F4 ma ke ʻano he mea no ka lawe ʻana i nā pipeline wai corrosive a viscous.

3. ʻOi aku ka maikaʻi o nā waiwai hoʻokaʻawale uila

ʻO nā plastik maʻamau he mau alakaʻi maikaʻi ʻole o ka uila, a ʻo ko lākou kūʻē ʻana o ka ʻili a me ka nui o ka nui o ka nui, hiki ke hiki i ka 109 a 1018 ohms i nā helu.He nui ka puʻuwai haʻihaʻi, a he liʻiliʻi ka waiwai tangent poho dielectric.No laila, loaʻa i nā plastics ka nui o nā noi i ka ʻoihana uila a me ka ʻoihana mīkini.E like me nā kaula hoʻomalu i hoʻopaʻa ʻia i ka plastic.

4. Poor thermal conductor, me ka leo hoemi a me ka haalulu absorption hopena

ʻO ka mea maʻamau, ʻoi aku ka haʻahaʻa o ka conductivity thermal o ka plastic, e like me ka 1/75-1/225 o ke kila, a me nā micropores o ka plastic foam.

Loaʻa iā ia ke kinoea, ʻoi aku ka maikaʻi o ka insulation wela, ke kani ʻana o ke kani a me ke kūpaʻa haʻalulu.No ka laʻana, ʻo ka conductivity thermal o polyvinyl chloride (PVC) he 1/357 wale nō o ke kila a me 1/1250 o ka alumini.Ma keʻano o ka mana insulation thermal, he 40% kiʻekiʻe nā puka aniani aniani hoʻokahi ma mua o nā puka aniani alumini hoʻokahi, a ʻo nā puka aniani pālua he 50% kiʻekiʻe.Ma hope o ka hui ʻana o ka puka aniani me ka aniani hollow, hiki ke hoʻohana ʻia i nā hale noho, nā hale keʻena, nā papa, a me nā hōkele, e mālama i ka hoʻomehana ʻana i ka hoʻoilo a me ka mālama ʻana i nā lilo ea i ke kauwela, a maopopo loa nā pōmaikaʻi.

5. Hoʻolaha ākea o ka ikaika mechanical a me ka ikaika kiko'ī kiʻekiʻe

He paʻakikī kekahi e like me ka pōhaku a me ke kila, a he palupalu kekahi e like me ka pepa a me ka ʻili.Mai ka hiʻohiʻona o nā waiwai mechanical e like me ka paʻakikī, ka ikaika tensile, elongation, a me ka ikaika o ka hopena o nā plastics, loaʻa iā lākou kahi ākea ākea a he nui nā koho no ka hoʻohana.Ma muli o ka umekaumaha kikoʻī liʻiliʻi a me ka ikaika kiʻekiʻe o ka plastic, he ikaika kikoʻī kiʻekiʻe kona.Ke hoʻohālikelike ʻia me nā mea ʻē aʻe, loaʻa i nā plastics nā hemahema ʻike, e like me ka flammability, ʻoi aku ka ʻoi aku o ka ʻoi aku ma mua o nā metala, ke kū ʻana o ka wā kahiko, a me ka pale wela.

No laila, hoʻohana kā mākou huahana plastic i nā mea plastic e like me ke ʻano o ka huahana
ʻo kahi laʻana:punaʻO nā huahana ke kumu meaʻai PP a me ka lāʻau lapaʻau PP.
ʻO kasyringeʻo ia ka papa lapaʻau PP, a me kahōʻike Tubeloaʻa i ka papa lapaʻau PP a i ʻole PS.ʻO kaʻōmole pulupuluʻO ia ka hui pū ʻana o PET a me PP.

No ka meaka poniʻO nā mea a mākou e hoʻohana ai he kila kila maikaʻi loa, e like me 718. He maikaʻi loa ka maikaʻi o nā huahana plastic i hanaʻia.Loaʻa iā mākou he 13 mau makahiki o ka ʻike mōʻaukala ma kēia wahi, ʻoihana loa