Koi makeke no ka helu hehee kiekie PP
ʻO ka hoʻoheheʻe kahe o ka polypropylene pili loa i kona kaumaha mole. ʻO ka awelika molekala kaumaha o ka resin polypropylene pāʻoihana i hoʻomākaukau ʻia e ka ʻōnaehana catalytic Ziegler Natta maʻamau ma waena o 3 × 105 a me 7 × 105. ʻO ka helu heheʻe o kēia mau mea maʻamaupolypropylene resinshe haʻahaʻa maʻamau, e kaupalena ana i kā lākou mau noi.
Me ka hoʻomohala wikiwiki ʻana o ka ʻoihana fiber chemical a me ka ʻoihana mīkini textile, ua piʻi wikiwiki ka ʻoihana lole lole ʻole. ʻO ke ʻano o nā pono o ka polypropylene e lilo ia i mea maka i makemake ʻia no nā lole i ulana ʻole ʻia. Me ka hoʻomohala ʻana o ke kaiāulu, ʻoi aku ka laulā o nā kahua noi o nā lole i ulana ʻole ʻia. Ma ke kahua o ka lāʻau lapaʻau a me ke olakino, hiki ke hoʻohana ʻia nā lole i ulana ʻole ʻia no ka hana ʻana i nā lole kaʻawale, nā masks, nā ʻaʻahu ʻokiʻoki, nā lole hoʻomaʻemaʻe wahine, nā diapers pēpē, a pēlā aku; Ma ke ʻano he hale a me nā mea geotechnical, hiki ke hoʻohana ʻia nā lole i ulana ʻole ʻia no ka pale ʻana i ka hale, ke kūkulu ʻana i ke alanui, ka ʻenekinia mālama wai, a i ʻole ka manaʻo o ka hale kiʻekiʻe e hiki ke hana ʻia me ka spunbond a me ke kui kuʻi ʻenehana composite. ʻO kona ola lawelawe he 5-10 mau manawa lōʻihi ma mua o ka manaʻo asphalt kuʻuna; ʻO nā mea kānana kekahi o nā huahana hoʻomohala wikiwiki loa no nā lole i ulana ʻole ʻia, hiki ke hoʻohana ʻia no ke kinoea a me ka kānana wai i nā ʻoihana e like me ke kemika maloʻo, lāʻau lapaʻau, a me ka meaʻai, a loaʻa i ka mākeke nui; Eia hou, hiki ke hoʻohanaʻia nā lole i ulanaʻoleʻia i ka hanaʻana i kaʻili synthetic, nā ukana, nā lole lole, nā lole hoʻonani, a me nā lole holoi no ka hoʻohanaʻana i ka hale.
Ma muli o ka ulu mau ʻana onā lole i ulana ʻole ʻiae hoʻonui mau ana nā koi no kā lākou hana ʻana a me ka noi ʻana, e like me ka hehee ʻana, ka wikiwiki wikiwiki, nā huahana lahilahi, a me nā mea ʻē aʻe. Eia kekahi, ʻo ka hana ʻana o ka wili kiʻekiʻe kiʻekiʻe a i ʻole denier polypropylene fibers pono pū kekahi polypropylene resin e loaʻa i ka hana kahe kahe maikaʻi; ʻO kekahi mau puaʻa ʻaʻole hiki ke kū i nā wela kiʻekiʻe e pono ai ka polypropylene ma ke ʻano he mea lawe me nā mahana hana haʻahaʻa haʻahaʻa. Pono kēia mau mea a pau i ka hoʻohana ʻana i ka resin polypropylene melt index ultra-high ma ke ʻano he mea maka i hiki ke hana ʻia ma nā haʻahaʻa haʻahaʻa.
ʻO ka mea kūikawā no ka lole i hoʻoheheʻe ʻia he polypropylene me ka helu hoʻoheheʻe kiʻekiʻe. ʻO ka helu heheʻe e pili ana i ka nuipaʻa o nā mea hoʻoheheʻe e hele ana i loko o kahi paipu capillary maʻamau i kēlā me kēia 10 mau minuke. ʻO ke kiʻekiʻe o ka waiwai, ʻoi aku ka maikaʻi o ka hoʻoili ʻana o ka fluidity o ka mea. ʻOi aku ka kiʻekiʻe o ka helu heheʻe o ka polypropylene, ʻoi aku ka maikaʻi o ka hoʻoheheʻe ʻia ʻana o nā fibers, a ʻoi aku ka maikaʻi o ka hana kānana ʻana o ka lole i hoʻoheheʻe ʻia.
ʻO ke ala no ka hoʻomākaukau ʻana i ka resin polypropylene melt index kiʻekiʻe
ʻO kekahi e hoʻomalu i ka paona molekala a me ka hāʻawi ʻana i ke kaumaha o ka polypropylene ma o ka hoʻomalu ʻana i ke kaʻina hana polymerization, e like me ka hōʻemi ʻana i ke kaumaha molekala o ka polymer ma o ka hoʻonui ʻana i ka neʻe o nā mea cationic e like me ke kinoea hydrogen, a laila e hoʻomaikaʻi ai i ka helu heheʻe. Hoʻopili ʻia kēia ʻano e nā mea e like me ka ʻōnaehana catalytic a me nā kūlana hopena, e paʻakikī ai ke kāohi i ka paʻa o ka melt index a hoʻokō.
Ua hana pololei ʻo Yanshan Petrochemical i nā mea hoʻoheheʻe ʻia me ka hoʻoheheʻe ʻana o ka 1000 me ka hoʻohana ʻana i nā catalysts metallocene i nā makahiki i hala. Ma muli o ka paʻakikī o ka mālama ʻana i ka paʻa, ʻaʻole i hoʻokō ʻia ka polymerization nui. Mai ka puka ʻana mai o ka maʻi ahulau i kēia makahiki, ua ʻae ʻo Yanshan Petrochemical i ka controllable degradation polypropylene melt blown material production technology i hoʻomohala ʻia ma 2010 e hana i ka polypropylene melt blown non-woven fabric kūikawā i ka lā 12 Pepeluali. Ua hana ʻia ka huahana a ke hoʻouna ʻia nei i nā mea hoʻohana i lalo no ka hoʻāʻo.
ʻO kekahi ala ʻē aʻe, ʻo ia ke kāohi i ka hoʻohaʻahaʻa ʻana o ka polypropylene i loaʻa ma o ka polymerization maʻamau, hoʻemi i kona kaumaha molekala, a hoʻonui i kāna helu hehee.
I ka wā ma mua, ua hoʻohana mau ʻia nā ʻano hoʻohaʻahaʻa wela kiʻekiʻe e hōʻemi i ke kaumaha molekala o ka polypropylene, akā ʻo kēia ʻano hana hoʻohaʻahaʻa mechanical kiʻekiʻe he nui nā drawbacks, e like me ka hoʻohui ʻana a me ka decomposition thermal, a me nā kaʻina hana paʻa ʻole. Eia kekahi, aia nāʻano e like me ka ultrasonic degradation, akā makemake pinepine kēia mauʻano i ka hikiʻana o nā solvents, e hoʻonui i ka paʻakikī a me ke kumukūʻai o ke kaʻina hana. I nā makahiki i hala iho nei, ua hoʻohana nui ʻia nā ʻano o ka hoʻohaʻahaʻa kemika o ka polypropylene.
Iecaianoaaiiuo o kiʻekiʻe hehee ai manamanalima PP ma ke kimika Degradation Method
ʻO ke ala hoʻohaʻahaʻa kemika e pili ana i ka hoʻopili ʻana i ka polypropylene me nā mea hoʻohaʻahaʻa kemika e like me nā peroxides organik i loko o kahi extruder screw, e hoʻoheheʻe ai ke kaulahao mole o polypropylene a hoʻemi i kona kaumaha molekala. Ke hoʻohālikelikeʻia me nāʻano hana hoʻohaʻahaʻa'ē aʻe, loaʻa iā ia nā mea maikaʻi o ka hoʻohaʻahaʻa pihaʻana, ka wai hoʻoheheʻe maikaʻi, ka hana hoʻomākaukau maʻalahi a hiki ke hana, a maʻalahi ka hanaʻana i kaʻoihanaʻoihana nui. ʻO kēia hoʻi ke ala maʻamau i hoʻohana ʻia e nā mea hana plastic i hoʻololi ʻia.
Pono lako
He ʻokoʻa loa ka helu heheʻe kiʻekiʻe mai nā lako hoʻololi PP maʻamau. Pono nā lako no ka hoʻoheheʻe ʻana i nā mea i hoʻoheheʻe ʻia i kahi lākiō ʻoi aku ka lōʻihi, a ʻo ke poʻo mīkini pono e kū pololei a hoʻohana paha i ka granulation ma lalo o ka wai (ʻo Wuxi Huachen ka ʻoki ʻana i lalo o ka wai); He lahilahi loa ka mea a pono e hui me ka wai ma hope koke iho o ka puka ʻana mai ke poʻo mīkini no ka hoʻoluʻu maʻalahi;
No ka hana ʻana i ka polypropylene maʻamau, ʻo ka wikiwiki o ka ʻoki ʻana o ka extruder he 70 mau mika i kēlā me kēia minuke, ʻoiai no ka polypropylene hoʻoheheʻe kiʻekiʻe, pono ka wikiwiki o ka ʻoki ʻana ma luna o 120 mika i kēlā me kēia minuke. Eia kekahi, ma muli o ke kahe wikiwiki o ka polypropylene melt kiʻekiʻe, pono e hoʻonui ʻia kona mamao hoʻomaha mai 4 mika a 12 mika.
ʻO ka mīkini no ka hana ʻana i nā mea hoʻoheheʻe ʻia e pono ai ka hoʻololi mau ʻana, me ka hoʻohana pinepine ʻana i kahi mea hoʻololi mesh station ʻelua. ʻOi aku ka kiʻekiʻe o nā koi mana kaʻa, a ʻoi aku ka nui o nā poloka shear e hoʻohana ʻia i loko o nā ʻāpana wili; Wahi a Koyapan, ʻo ka laina māhoe māhoe i hana ʻia me nā mea kūikawā i hoʻoheheʻe ʻia he mea kū hoʻokahi.
1. E hōʻoia i ka hānai paʻa (PP, DCP, etc.);
2. E hoʻoholo i ka lākiō hiʻohiʻona kūpono a me ke kūlana axial o ka wehe ʻana ma muli o ka hapalua o ke ola o ke ʻano hui pū (e hoʻomohala i ke kolu o ka hanauna e hōʻoia i ka extrusion maʻalahi o ka pane CR-PP);
3. No ka hōʻoia ʻana he kiʻekiʻe ka hua o ka manamana hoʻoheheʻe ʻia i loko o ka pae hoʻomanawanui (ʻoi aku ma mua o 30 mau ʻāpana i hoʻopau ʻia he ʻoi aku ka maikaʻi o ke kumu kūʻai a me ka hui ʻana i hoʻohālikelike ʻia me hoʻokahi kakini wale nō);
4. Pono e hoʻolako pono i nā poʻo hoʻoheheʻe wai kūikawā. Pono ka hoʻoheheʻe a me ka hoʻomehana ʻana, a he liʻiliʻi ka nui o ka ʻōpala;
5. ʻOi aku ka maikaʻi o ka hoʻolako ʻana i kahi granulator ʻoki anuanu oʻo no nā mea hoʻoheheʻe ʻia (ʻo ia ka inoa maikaʻi ma ka ʻoihana) e hōʻoia i ka maikaʻi o nā mea i hoʻopau ʻia a me ka helu kiʻekiʻe;
6. ʻOi aku ka maikaʻi inā loaʻa nā manaʻo hoʻāʻo pūnaewele. Eia kekahi, ʻo ka hoʻohui ʻana i nā mea hoʻomaka hoʻohaʻahaʻa wai i ka ʻaoʻao ʻaoʻao e koi i ka pololei kiʻekiʻe ma muli o ka liʻiliʻi o nā mea hoʻohui. No nā lako hānai ʻaoʻao, e like me Brabenda i lawe ʻia mai, Kubota, Matsunai i hana ʻia ma ka home, etc.
ʻO nā catalysts degradation i kēia manawa
1: ʻO Dit-butyl peroxide, ʻike ʻia hoʻi ʻo di-tert-butyl peroxide, ka mea hoʻomaka a, vulcanizing agent dTBP, he wai ʻoniʻoni ʻole a melemele liʻiliʻi ʻaʻole hiki ke hoʻoheheʻe ʻia i loko o ka wai a hiki ke hoʻoheheʻe ʻia me nā solvents organik e like me benzene, toluene, a me ka acetone. ʻO ka oxidizing ikaika, hiki ke puhi ʻia, kūpaʻa ma ka lumi wela, ʻaʻole ʻike i ka hopena.
2: ʻElima sulfurizer ʻelua, i hoʻopau ʻia ʻo DBPH, inoa kemika 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, paona molekala 290.44. ʻO ka wai melemele ʻeleʻele me ka mānoanoa pili o 0.8650 ma ke ʻano o ke kani a me ka pauka keʻokeʻo waiu. ʻO 8 ℃ ka palena hau. Ka helu hoʻolapalapa 50~52 ℃ (13Pa). Aia ka index refractive mai 1.418 a i 1.419. ʻO ka viscosity o ka wai he 6.5mPa. s. Ke kiko uila (ke kīʻaha hāmama) 58 ℃. Hiki ke hoʻoheheʻe ʻia i loko o ka hapa nui o nā mea hoʻoheheʻe organik e like me nā ʻawaʻawa, eter, ketones, esters, aromatic hydrocarbons, etc., insoluble in water.
3: Ka hoʻāʻo ʻana i nā manamana lima i hoʻohui ʻia
Pono e hana ʻia ka hoʻāʻo ʻana o ka manamana lima e like me GBIT 30923-2014 Polypropylene Melt Spray Special Materials; ʻAʻole hiki ke hoʻāʻo ʻia nā mea kani manamana hoʻoheheʻe maʻamau. ʻO ka hoʻoheheʻe kiʻekiʻe e pili ana i ka hoʻohana ʻana i ke ʻano volumetric ma mua o ke ʻano nui no ka hoʻāʻo.
Loaʻa nā lako hale ʻo Chengde Youte, Guangxin Electronic Technology, Hangzhou Jinmai, Jilin Science and Education Instrument Factory, a me nā lako i lawe ʻia mai me Zwick; ʻO Chengde Jinjian Testing Instrument Co., Ltd. e hana ana i ka MFL-2322H melt flow rate mika i hoʻolālā ʻia no ke ana ʻana o NVR o nā mea polypropylene ultra-high flow, e hoʻokō ana i nā koi hoʻāʻo ʻo 9 GB20 Polypropylene. Pahu Mea Kuikawa. ʻO ka laulā hoʻāʻo (500-2500) cm / 10min.
I kēia manawa, aia nā:
1. Shandong Daoen Polymer Materials Co., Ltd
2. Hunan Shengjin New Materials Co., Ltd
3. Jinfa Technology Co., Ltd
4. ʻO Beijing Yishitong New Materials Development Co., Ltd
5. Shanghai Huahe Composite Materials Co., Ltd
6. Hangzhou Chenda New Materials Co., Ltd
7. Basel, Dalin, South Korea
Ka manawa hoʻouna: Apr-01-2024