ʻO ka laina extrusion plastik e pili ana i ka mea maka: Nā waiwai a me ka hoʻohana ʻana o ka hana kiʻekiʻe Polyphenylene Sulfide PPS Resin

Laina hoʻopuka plastike pili ana i nā mea maka
He ʻano hou ka Polyphenylene sulfide o nā palakiko ʻenekinia hana. Loaʻa i loko o kona mau molekala nā ʻāpana kūkulu hou o ka p-phenylene sulfide, a ʻo ke kaulahao nui o ka molekala he phenylene sulfide. ʻO kona kaumaha molekala he 10,000 ~ 50,000. He polymer linear a lālā paha ka Polyphenylene sulfide me ka ʻole o kahi heheʻe crystalline. He ʻano linear ma mua o ke keʻa ʻana a he ʻano thermosetting ma hope o ke keʻa ʻana. Hiki ke palupalu i kahi ʻano ke hoʻomehana piha ʻia a hoʻomaʻalili ʻia.


Ua polycondensed ʻia ka Polyphenylene sulfide mai ka sodium sulfide a me ka dichlorobenzene i loko o kahi solvent polar ikaika. ʻO nā ʻano hana e komo pū me ke ʻano hana a Michael, ke ʻano hana hoʻohuihui ponoʻī p-halogenated thiophenate, ka polyhalide ʻala a me ke ʻano hana polycondensation alkali metal sulfide, a pēlā aku.

ʻO ka nui o ka polyphenylene sulfide he 1.36, a he pauka keʻokeʻo a granules paha ka resin, paʻakikī a palupalu, me ke kiʻekiʻe o ka crystallinity a me ka ikaika o ka heheʻe ʻana. ʻElua ʻano o ke kaumaha molekala o ka Polyphenylene sulfide, ke kaumaha molekala haʻahaʻa a me ke kaumaha molekala kiʻekiʻe. Ma muli o ke kiʻekiʻe o ke kahe ʻana o ka heheʻe, he paʻakikī ke hoʻoheheʻe pololei, no laila, me ka pīpī ʻana, pono e hana ʻia kekahi mau ʻano hana ʻē aʻe i kahi kekelē o ke keʻa ʻana i ka wā o ka hoʻoheheʻe ʻana, a pono e hui pū ʻia kekahi nui o ke aniani fiber a i ʻole ka resin inorganic no ka hoʻoheheʻe ʻana i ka injection, ka hoʻoheheʻe ʻana a me ka hoʻoheheʻe ʻana i ka extrusion. i loko o ka hoʻopiha. ʻAʻole pono e keʻa ʻia ka polyphenylene sulfide kaumaha molekala kiʻekiʻe a hiki ke hoʻohana pololei ʻia i ka hana ʻana o nā huahana plastik.



He iwi kuamoʻo paʻa symmetrical ko PPS a he ʻāpana ia o kahi polymer crystalline i haku ʻia me nā apo benzene para-substituted a me nā ʻātoma sulfur. He plastic ʻenekinia kūikawā ʻo PPS me ka hana kiʻekiʻe a me kahi kiko heheʻe kiʻekiʻe a hiki i ka 280 °C hiki ke pani i nā metala. Aia ia ma ka piko o ka pyramid hana polymer, e like me ka mea i hōʻike ʻia ma ke Kiʻi 1. No kēia kumu, ma muli o ka hana maikaʻi loa o ka resin PPS, hoʻokō ia i nā koi mea o nā papahana plastics ʻenekinia koi.



1. Nā ʻano o ka resin polyphenylene sulfide hana kiʻekiʻe
(1) ʻO ka resin PPS hana kiʻekiʻe he polymer crystalline me ka paʻakikī kiʻekiʻe. ʻO kona ʻano kristal ma kahi o 65%. ʻO ka wikiwiki o ka crystallization, ka wai maikaʻi a me ke kaʻina hana hoʻoheheʻe pōkole.

(2) Kū'ē wela maika'i loa. Hiki i kona kiko hehe'e ke pi'i i 275 ~ 291 °C, ʻo ka mahana ho'opō'ino wela he 135 °C, a ʻo ka mahana ho'opō'ino wela ma hope o ka ho'oikaika 'ana i ke aniani fiber hiki ke pi'i i 260 °C. I ka lewa a me ka naikokene, ʻo ka mahana mua a me ka nāwaliwali o ka polyphenylene sulfide ma kahi o 400 °C, ho'opau ia i ka lewa ma 700 °C, a hiki nō ke mālama i ka 40% o kona kaumaha i loko o ke kinoea inert ma 1000 °C. ʻO ka mahana ho'ohana lō'ihi he 200 ~ 240 °C, a ʻoi aku ka maika'i o ke kū'ē wela o ke kinoea a me ke kūpa'a wela o ka ho'ohana mau 'ana ma mua o nā plastics 'enekinia o kēia manawa.

(3) Loaʻa iā ia nā waiwai mīkini maikaʻi. Loaʻa iā ia ka paʻakikī kiʻekiʻe loa, ka paʻakikī o ka ʻili kiʻekiʻe, ka emi iki ʻana o ka paʻakikī ma lalo o nā kūlana haʻahaʻa kiʻekiʻe, a he kūpaʻa kolo maikaʻi loa, kūpaʻa luhi a me ke kūpaʻa ʻaʻahu. Hiki ke hoʻomaikaʻi ʻia kona kūpaʻa ʻaʻahu ma ka hoʻopiha ʻana i nā lubricants e like me ka fluororesin a me ke kalapona fiber. A hoʻomaikaʻi nui ʻia.

(4) Loaʻa iā ia ke kūpaʻa maikaʻi loa i ka pala a me ke kūpaʻa kemika. Ma waho aʻe o nā waikawa oxidizing ikaika (e like me ka waikawa sulfuric i hoʻopaʻa ʻia, waikawa nitric, a me nā mea ʻē aʻe), hiki iā ia ke kū i ka pala o nā waikawa ʻē aʻe, alkalis a me nā paʻakai, a ʻaʻole hiki ke hoʻoheheʻe ʻia i loko o kekahi mea hoʻoheheʻe organik ma lalo o 200 ° C. ʻO kona kūpaʻa i ka pala ua aneane like me ka polytetrafluoroethylene. Eia kekahi, loaʻa iā PPS ke kūpaʻa maikaʻi i ka wā a me ka radiation, a ʻaʻole e hoʻopilikia ʻia kāna hana e nā ultraviolet ikaika he nui a me ka gamma-ray irradiation a me ka neutron radiation.

(5) He liʻiliʻi ka nui o ka omo wai (0.008%) a me ka nui o ka omo ʻana o ka aila. ʻO ka liʻiliʻi o ka hoʻoheheʻe ʻana o ka hoʻoheheʻe ʻana a me ke koina hoʻonui linear, he paʻa nā ana o ka huahana a me ka deformation liʻiliʻi, a hiki nō ke mālama i ke kūpaʻa o ka dimensional ʻoiai i kekahi mau wahi hau, ʻaila a me nā wahi kinoea corrosive, no laila hiki ke hoʻohana ʻia no ka hoʻoheheʻe pololei ʻana.

(6) Nā waiwai uila maikaʻi loa. ʻAʻole nui ka loli o ka resin PPS hana kiʻekiʻe i ke kū'ē ʻana o ka leo ma lalo o ke ana wela a me ka haʻahaʻa kiʻekiʻe, a ʻaʻole nui ka loli o kona mau dielectric constant me ka mahana a me ke alapine (frequency). Eia kekahi, haʻahaʻa ka nui o nā haumia ion, a hiki ke hoʻokomo ʻia i loko o kahi ʻauʻau solder ma 260 ° C, no laila hiki iā ia ke kū i ka hoʻopaʻa ʻana i ka ʻili. ʻO ka haʻalulu wela o nā ʻāpana uila, kūpono no nā huahana me nā koi kiʻekiʻe loa ma ka hana uila. Loaʻa iā ia ke kū'ē kiʻekiʻe a me nā waiwai dielectric haʻahaʻa.

(7) He haʻahaʻa loa ka mānoanoa heheʻe o ka resin PPS hana kiʻekiʻe a he wai maikaʻi hoʻi. He maʻalahi ke pulu a hoʻopili me ke aniani fiber, no laila he maʻalahi ke hoʻopiha. ʻO ka pellet injection i hoʻoikaika ʻia e ka fiber aniani a i ʻole ke aniani fiber-inorganic filler i hoʻomākaukau ʻia e ia he kūpaʻa kiʻekiʻe i ka hopena, kūlou kūlou a me ka ductility.

(8) Loaʻa i ka resin PPS hana kiʻekiʻe ka ikaika hoʻopili kiʻekiʻe i ke aniani, ka alumini, ke kila kila, a me nā mea ʻē aʻe. ʻOi aku ka ikaika o ka hoʻopili ʻana i ke aniani ma mua o ke aniani.