Pīlali kēpau: he paʻa mau koʻi i loko o nā mea a pau nāʻoihana

Pīlali kēpau - substance ka kiʻekiʻe ia'ku i nāʻakika, kumu a me nā halogens. He He kemikala oligomer. Ua hiki ke hoʻohana 'ia glueʻaneʻane kekahi mea. Ma ke kinowai moku'āina mea he maopopo pīlali kēpau, a i ka yellow-alani kala like 'ole, a ma hope e hoopaakiki ia i mea eleele, a kokoke maluhia no ka ola. Eia naʻe, kona hoʻohana kahi malaila e e Loaʻaʻia hui 'ana me nā'uheheʻe, Sol Hoopii-leachable mahele ole i ke Akua. Ma ke kinowai moku'āina ia mea loaʻawahia, no laila kona hoʻohana pono adherence i ka lākou o ka rula.

O ka papa, no ka ponaʻana i nā ipu a me nā 'ikamu i hele mai i loko o hui' ana me ka ai inu wai paha, ka mea hiki ole ke hoʻohana 'ia no ia mea ma laila i nā waiwai. Eia naʻe, ma muli o kā lākou i ka waiwai, i ka pīlali kēpau mea he paʻa mau koʻi i loko o ka loa palahalaha huahelu o na hana. Elua papa kuhikuhi hana o ka mea: e like me ka lina a me ka impregnation. A me kona kōkua hoʻopale ai e ku e ia ka popopo o nā pōhaku puna, mea hiki ke hooheheeia, hana ka hopena he, glueʻano,ʻo ka mea nui loa i loko o aneane pau lala o ka hana 'enekinia. Pīlali kēpau, a o Minvielle i hoʻomaka mea no ka? Iecaianoaaiiie o ke aniani puluniu, i ka hoʻomano hoʻohana i kūkuluʻia, a me ka boat- ea puolo. Nō hoʻi, ka mea mua ua hoʻohana 'ia e hoopiha i ka uilaʻoe, a hiki ma ka manao.

Pīlali kēpau ua hoʻohana 'ia i loko o tandem me ka hardener. Where ka wela iapaau ana mea unacceptable i loko o ka wahi lulu 'ia, e hoʻohana' ia ka mea, i loko o ka poe liilii, nā hālāwai hoʻonaʻauao anu waiwai. A no ka nui huahana, ke hoʻololi i ka hana ma kiʻekiʻe kūpaʻa a me ka hōʻeuʻeu wahie, ma corrosive hana kūpono - wela, hoola iho konohiki. Ma keia hihia, he denser maka aha Haka pono pīlali nā lātoma. Eia kekahi, ma laila nō ka pīlali kēpau, a hardeners, 'ia manaʻoi no na olelo o ka kiʻekiʻe humidity, paakai wai.

I ka hana ana a me kona ola, ka mea e e hoʻomaopopo i ka hui a me kona hardener ka exothermic naoh, a me ka nui o ka paona o ka pīlali, ka mea i oi aku ka wela ua loaʻa. Ma keia e pili ana ia mea e pono e koho i ka helu pono o nā konohiki, a me ka correlate ia me ka manao ikaika o ka i, e like me ka hopena, e kiʻi i kaʻaʻahu (ʻaʻohe Oe) paa. Eia kekahi, o ka naoh o ke kēpau, a hardener mea irreversible, a ma ia hope thermoset, e like thermoplastic hiki ole maule a hoike mai i ka rework hopena. i ka loa, he pono ole, a affordable mea no ka hoola iho la oia o ka pīlali lako e noʻonoʻo PEPA, DETA, TETA, TEPA a me №1 (hexamethylene diamine mea hoʻoheheʻe i'eto ka waiʻona). Aie i ka mea iʻike mau mau-ke keʻena hui - heʻano fragile mea, ua mahuahua kona elasticity ma ka pepa i kekahi ke keʻena. Kēia hehee ai ua kapaia "hopena modifier", mea e i he okoa Nine Inch haku mele 'ana, a, ke kaumaha ma muli o kēia, i kekahi mau' ano. Oiaio chemists ua 'ike akula i nā mea i loaʻa i ka hiki e hana nā like me ka hardener, a me ka hopena modifier.