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Hoʻolauna: Ke kuleana o nā mea hoʻohui Silicone i ka hana ʻana i ka Polymer
Hoʻohana nui ʻia nā mea hoʻohui silicone ma ke ʻano he mea kōkua hana a me nā mea hoʻololi hana i ka hana polymer e hoʻoponopono i ke ʻano hoʻoheheʻe, hoʻomaikaʻi i nā waiwai o ka ʻili, a hoʻoikaika i ke kūpaʻa hana ma lalo o nā kūlana hana hana kiʻekiʻe.
I loko o nā wahi hana thermoplastic e like me ka extrusion, injection molding, film blowing, a me ka compounding, hoʻopilikia pinepine ʻia nā polymers i ke koʻikoʻi shear kiʻekiʻe a me nā mahana kiʻekiʻe. Hiki i kēia mau kūlana ke alakaʻi i nā pilikia hana maʻamau, me ke kahe hoʻoheheʻe paʻa ʻole, nā hemahema o ka ʻili (e like me ka haki hoʻoheheʻe a me ka ʻili mano), ka hōʻiliʻili make, a me ka maikaʻi o ka huahana kūlike ʻole.
Ua hana ʻia nā mea hoʻohui silicone e hoʻoponopono i kēia mau palena interfacial a me rheological ma ka hōʻemi ʻana i ka friction polymer-metal, hoʻomaikaʻi i ka lubrication ma ka interface melt, a me ka hoʻopaʻa ʻana i ke ʻano kahe i ka wā o ka hana ʻana. ʻO ka hopena, hāʻawi lākou i nā hana hana ʻoi aku ka maikaʻi a me ka hana huahana hope loa.
Hoʻohana nui ʻia lākou ma nā ʻōnaehana polymer nui, me nā polyolefins (PE, PP, LLDPE, HDPE, EVA), nā hui PVC, nā elastomers thermoplastic (TPE, TPU, TPO, TPV), a me nā plastics ʻenekinia (ABS, PC, PA/Nylon, PBT, PET, PPS, POM, a me PMMA).
Mai kahi kuanaʻike hana, hoʻohana ʻia nā mea hoʻohui silicone i ka extrusion, injection molding, film blowing, a me nā kaʻina hana hui, kahi e kōkua ai lākou i ka hoʻopaʻa ʻana i ka rheology hoʻoheheʻe, hoʻemi i ka friction interfacial, a hoʻemi i nā hemahema e pili ana i ka ʻili a me ka make ma lalo o nā kūlana hana hoʻomau a wikiwiki paha.
ʻO nā noi hoʻohana hope loa e pili ana i nā ʻōnaehana uea a me ke kaula, nā ʻāpana o loko o ke kaʻa, nā mea kāmaʻa, nā paipu, nā ʻōpala hiki ke hoʻololi ʻia, nā uhi, nā pena, nā olonā, a me kahi ākea o nā huahana palaki i hana ʻia a hoʻololi ʻia.
Me ka hoʻonui ʻana o ka ʻoihana i ka hoʻoikaika ʻana i ka huahana kiʻekiʻe, ka kaohi maikaʻi paʻa, ka hoʻemi ʻana i nā helu ʻōpala, a me ka hoʻomaikaʻi ʻana i ke kūpaʻa o nā mea, ʻaʻole i manaʻo hou ʻia nā mea hoʻohui silicone he mau mea kōkua hana maʻalahi. Akā, ua hoʻohui nui ʻia lākou ma ke ʻano he mau ʻāpana hana i loko o ka hoʻolālā ʻōnaehana polymer, e hāʻawi pololei ana i ka pono o ka hana ʻana a me ka hana hope loa.
ʻO ka hopena, ua lilo nā mea hana hoʻohui silicone i mau hoa hana ʻenehana koʻikoʻi ma o ke kaulahao waiwai polymer honua.
Hōʻike kēia ʻatikala i nā mea hana hoʻohui silicone 10 kiʻekiʻe ma ka honua holoʻokoʻa, e kōkua ana i nā mea hana e ʻike i nā mea hoʻolako alakaʻi, nā ʻenehana, a me nā hoʻonā no nā noi hana polymer.

He aha nā mea hoʻohui silicone?
ʻO nā mea hoʻohui silicone—i kapa ʻia hoʻi he mau mea hoʻohui silicone-based, nā mea hoʻohui siloxane, a i ʻole nā ​​​​mea hoʻohui polysiloxane—he mau mea kōkua hana a me nā mea hoʻonui hana i hoʻokumu pinepine ʻia ma luna o polydimethylsiloxane (PDMS) a i ʻole nā ​​​​​​hui organosilicon i hoʻololi ʻia.
Hoʻohui ʻia lākou ma nā ʻano haʻahaʻa haʻahaʻa (maʻamau 0.1-5%) e hoʻomaikaʻi i ka hiki ke hana ʻia, nā ʻano o ka ʻili, a me ka lōʻihi o ka lōʻihi o ka huahana.
Nā Hana Hana Koʻikoʻi
• Hoʻemi i ka friction heheʻe a hoʻomaikaʻi i ke ʻano o ke kahe ʻana
• Ke pale ʻana i nā kīnā o ka ʻili e like me ka haki heheʻe a me ka ʻili manō
• Hoʻemi i ka hōʻiliʻili ʻana o ka make a me ka hoʻēmi ʻana i ka haumia o nā lako
• Hoʻonui i ka laumania o ka ʻili a me nā waiwai paʻi
• Hoʻomaikaʻi i ke kūpaʻa hana a me ka throughput

Kemika Koʻikoʻi o nā Mea Hoʻohui Silicone
Hoʻomaka ka hana o nā mea hoʻohui silicone mai ko lākou iwi kuamoʻo silicon-oxygen (Si-O) palupalu, i hana pinepine ʻia me nā hui ʻaoʻao organik e like me ka methyl.
Hāʻawi kēia ʻano molekala kūikawā i:
• Haʻahaʻa ka ʻilikai no ka lubrication maikaʻi loa
• Paʻa wela kiʻekiʻe a me ka oxidative ma lalo o nā kūlana hana koi
• Hydrophobicity e kōkua i ka pale ʻana i nā ʻili polymer mai ka makū
• He paheʻe maikaʻi loa a me ka lubrication, e hōʻemi ana i ke kaumaha shear i ka wā o ka extrusion a me ke kālai ʻana
• Ka inertness kemika a me ka maʻalahi, e hiki ai ke kūlike me nā ʻano polymers like ʻole

Nā ʻano o nā mea hoʻohui Silicone hou
Hoʻolālā ʻia nā mea hoʻohui silicone e hoʻokō i nā koi hana kikoʻī ma muli o ke kaumaha molekala, nā hui hana, a me ke ʻano polymer. ʻO nā ʻano ʻoihana maʻamau e komo pū me nā wai silicone (nā ʻaila), nā siloxanes, nā silicones i hoʻololi ʻia e polyether, nā resins silicone, nā masterbatches silicone, a me nā pauka silicone.

1. ʻO ka Masterbatch Silicone
ʻO ka silicone masterbatch kahi ʻano pelletized premium i hoʻohana nui ʻia i ka ʻoihana polymer. Hilinaʻi ka ʻenehana kiʻekiʻe loa i ka hoʻopuehu ʻana i nā polymers siloxane ultra-high molecular weight (UHMW) i loko o nā mea lawe thermoplastic like ʻole (me nā polyolefins, nā plastics ʻenekinia, a me nā elastomers thermoplastic). Hāʻawi ʻia ma ke ʻano pellet maʻamau, ʻae ia i ka dosing maʻemaʻe a pololei i loko o ka matrix thermoplastic i ka wā o ka compounding, extrusion, a i ʻole ka injection molding. ʻAʻole e like me nā waxes kuʻuna, nā fatty acid amides, a i ʻole nā ​​​​aila kaumaha haʻahaʻa, hāʻawi nā UHMW silicone masterbatches i ka paheʻe ʻana o ka ʻili a me ka hoʻokuʻu ʻana i ka mold me ka pale ʻana i nā hemahema hana e like me ka paheʻe ʻana o ka screw.

2. Nā Wai Silicone (PDMS)
ʻO nā wai Silicone (PDMS) he mau silicones linear, haʻahaʻa a waena ke kaumaha molekala, i hōʻailona ʻia e kahi iwi kuamoʻo silicon-oxygen (-Si-O-) hou me nā hui ʻaoʻao methyl. I ka hana polymer, hana nui lākou ma ke ʻano he mau mea kōkua hana kino manawa pōkole a me nā lubricants waho. Ma muli o ko lākou neʻe kiʻekiʻe o ka molekala a me ka nele o ka hoʻopili kemika me ka matrix polymer host, hoʻohaʻahaʻa lākou i ka viscosity heheʻe a me ka torque akā ua maʻalahi loa i ka neʻe ʻana, e alakaʻi ana i ka exudation o ka ʻili, ka paheʻe ʻana o ka wili, a me nā hemahema o ka pena a i ʻole ka paʻi ʻana.

3. Nā mea hoʻohui Organosilicone hana
ʻO nā Functional Organosilicone Additives he mau copolymers silicone i hoʻololi ʻia e ke kemika, a i ʻole organo-modified e hoʻohui i nā hui hana reactive a polar paha (e like me ka epoxy, amino, carboxy, vinyl, a i ʻole nā ​​​​ʻāpana polyether) i loko o ke kuamoʻo siloxane a i ʻole nā ​​​​wikiwiki kaulahao. ʻAʻole like me ka PDMS maʻamau, ua hana ʻia kēia mau mea hoʻohui e hana ma ke ʻano he mau mea hoʻololi interfacial a me nā mea hoʻohui reactive. Hoʻemi lākou i ka haunaele interfacial a hoʻonui i ka hoʻopili ʻana o ka pae ma waena o nā ʻāpana kūpono ʻole, e lilo ai lākou i mea nui no ka hoʻomaikaʻi ʻana i nā plastics ʻenekinia, hoʻoikaika i ka hana o nā polymers recycled/PCR, a hoʻomaikaʻi i ka hoʻomaʻū ʻana o ka mea hoʻopihapiha a me ka hoʻolaha ʻana (e laʻa, nā mea pale ahi halogen-free, nā fibers aniani) i nā ʻōnaehana polymer multi-component.

4. Nā Pauka Silicone
ʻO nā Pauka Silicone he mau ʻano silicone paʻa, kahe manuahi, a me nā ʻano particulate, i hana pinepine ʻia me nā polymers siloxane kaumaha molekala kiʻekiʻe loa (UHMW) i hoʻopaʻa ʻia i loko o kahi kumu silica inorganic, a i ʻole nā ​​resins silicone spherical ʻekolu-dimensional (e laʻa, polymethylsilsesquioxane). Hana ʻia ma ke ʻano he mau mea hoʻololi hana mau, ua hui pū ʻia lākou i loko o nā thermoplastics e hāʻawi i nā hoʻomaikaʻi ʻili lōʻihi—e like me ke kūpaʻa mau loa o ka ʻōpala a me ke komo ʻana, ka hōʻemi paʻa ʻana o ka Coefficient of Friction (COF), a me nā hiʻohiʻona anti-blocking—me ka ʻole o ka hoʻopilikia ʻana i nā waiwai mechanical o ka substrate a i ʻole ka pena ʻana ma hope o ka hana ʻana.