Puluniu polypropylene

Hoʻokomo ʻia ka pulupulu polypropylene i propylene polymerization, hoʻoheheʻe wili, ma muli o ka ʻole o nā poloka pūʻulu polar, liʻiliʻi ka ikaika intermolecular, a no ka maʻalahi o ke kaulahao mole, no laila ke aniani hoʻololi o ka polypropylene ma lalo o 0 ℃, ʻo ka fiber me pono e lawe i ka polypropylene isotactic polymerization, e hana i kēlā me kēia atoma o polypropylene macromolecule a me nā hui i ʻekolu dimensional ma ke ʻano he hoʻonohonoho maʻamau, hiki iā 165-170 point, ke kiko hoʻoheheʻe ma muli o ke kiʻi propylene ma waena o nā mole liʻiliʻi, no laila ke kaupaona o ka polypropylene resin i 200000 a ʻoi paha. ka viscosity hoʻoheheʻe, no laila, ke hoʻoheheʻe ka wili wili wili ma luna o 100 ℃ kiʻekiʻe ma mua o ka pae hoʻoheheʻe, he 285 ℃ a ʻoi paha ke kiʻekiʻe. Hiki ke hoʻopili ʻia ke kaulahao molekika polypropylene me ka maʻamau maʻamau, a maʻalahi hoʻi e crystallize i ka wili. ʻO ka crystallinity o ka fiber mua a hiki i 50%. Ke wili, kaohi ʻia ka mahana o ke keʻena silika ma lalo o 30 ℃, i hiki i ka fiber mua ke hana i nā kristal pseudo-hexagonal paʻa ʻole, maʻalahi e hoʻolōʻihi i ka wā o ka hana ʻana ma hope. Hiki ke hoʻohana ʻia ka hoʻomākaukau ʻana o ka pulupulu polypropylene ʻino lahilahi i ka hana wili pōkole, ka mea extruder mai ke kiʻi ʻoniʻoni me nā auwai ma ka wili e māhele ai i ka fiber. ʻO ka polypropylene fiber density ka 0.91 g / cm ', ʻo ia ka pulupulu kemika i ka mālamalama o nā laha, ʻaʻole lawe ka pulupulu i ka wai, ma lalo o nā kūlana maʻamau ua loaʻa hou ka helu o ka wai i 0, maloʻo a pulu ka hana me ka ʻole o ka loli nui, ʻaʻohe puna. a ʻaʻohe moth. Ma muli o ka non-hygroscopicity, paʻakikī ka pena ʻana, hiki ke hoʻohana ʻia ke ʻano dyeing spinning e hoʻonā i ka pilikia o ka penaʻana i ka polypropylene, akā ʻaʻole paʻa ka chromatography.

Kiʻekiʻena polypropylene puluniu a me ka mua modulus, kokoke i ka polyester, ʻaʻohe a me ke kūpikipiki maikaʻi, akā, i ka piʻi ʻana o ka ukana, ʻoi aku ka nui o ka polypropylene fiber creep elongation ma mua o polyester, ma lalo o ke koʻikoʻi koʻikoʻi a me ka haki ikaika ʻoi aku ka kiʻekiʻe ma mua o polyester, no laila polypropylene fiber he fiber ikaika a paʻakikī.

Haahaa loa ka mahana pālolo polypropylene fiber, no laila ʻaʻole paʻa ka hopena hoʻonohonoho wela. ʻO ke kiko palupalu ʻo 140-150 ℃, a ʻo ke kiko hoʻoheheʻe ʻo 165-173 ℃. Ua hoʻoheheʻe ʻia ia ma kekahi ʻaoʻao a puhi mālie i kekahi ʻaoʻao i ka lapalapa.

ʻO ka conductivity wai i loko o ka puluniu ka mea haʻahaʻa loa, kahi hana hoʻoluʻu maikaʻi. ʻO Polypropylene kahi polima kaulahao kalapona, kaulahao macromolecular me ka ʻole o nā loulou nāwaliwali, maikaʻi ke kūpaʻa kemika, i hoʻohui ʻia me ka acidic chloric, acid nitric a me nā luku ʻino oxidation acid, maikaʻi ke kūʻē ʻana i nā waikawa ʻē aʻe. Kūʻē Alkali, me ka hoʻohui i ka soda caustika ikaika,

ʻAʻohe hopena o ka alkali i ka ikaika o polypropylene. Kūpono ʻo Polypropylene i nā mea hoʻoheheʻe maʻamau e like me ka ethanol, ethyl ether, benzene, acetone, gasolina, tetrachlorethylene ʻaʻole i hoʻoheheʻe ʻia i loko o ka wela benzene a me ka pehu ʻana o ka petrolina, hiki ke hoʻoheheʻe ʻia i loko o ka wela chlorobenzene, tetrahydronaphthalene a me dechydronaphthalene.

Hana maikaʻi ka hoʻopaʻa uila uila i ka pulupulu polypropylene, akā maʻalahi ka hōʻiliʻili uila uila i ka hana ʻana, a maikaʻi ʻole ka wili o ka pulupulu polypropylene maʻemaʻe.

Maʻalahi i ke ʻelemakule ka polypropylene puluniu, no ka mea, ʻeleu loa ka hydrogen atom ma ke kolona carbon atti i loko o ke kaulahao polypropylene macromolecular, a maʻalahi ia e hoʻopili ʻia e ka mālamalama, ka wela a pēlā aku a hua mai i nā radical free, a kumu i ke kaulahao radical free ka hopena hoʻohaʻahaʻa, kahi e hāpai ai i ka haki o ka kaulahao macromolecular. Ke mālama ʻia nā olonā isotactic polypropylene ma 50 ℃ no hoʻokahi makahiki, ua lilo ko lākou waiwai. I mea e pale aku ai i ka ʻelemakule, hoʻohui pinepine ka wili i ka agena anti-ʻelemakule, i mea e lohi ai i ke kaʻina ʻelemakule, ka hopena ʻoi aku o ka ketone o-hydroxydiphenyl a me nā nickel i piha i nā meaola metala metala, me ka hoʻohui ʻana i 1% i 3% graphite e pale ai i ka ʻelemakule photosensitive ka maikaʻi loa, akā ʻaʻole kūpono i ka hana o ke olonā keʻokeʻo.

ʻO ka fiber polypropylene ma muli o ke kumukūʻai hana he haʻahaʻa, ʻo ka mahele o ka liʻiliʻi a maikaʻi loa o ke kino a me nā waiwai kemika a loaʻa i ka hoʻomohala wikiwiki, me kahi mea nui i hoʻohana ʻia i ka hana ʻana i nā lole ʻoihana, lole ʻole i ulana ʻia, hoʻomaka pū hoʻi i ka lole, ʻo ia hoʻi ma muli o ka polypropylene fiber kahi mana nui i ka lawe ʻana, hiki ma o ka lole o ka wai wai capillary e hoʻolilo ai, ʻaʻole ia he hopena absorption, e hoʻomaloʻo i ka ʻili, no nā hana haʻuki ikaika, nā lole a me nā lole permeable hana lima ʻē aʻe. etc.


Ka manawa Post: Jun-03-2019

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