Thermoplastic Powder Pena - Mea Hoʻolako, Hoʻomohala, Pono a me nā ʻino

Ka mea hoʻolako

China PECOAT® kūikawā i ka hana a me ka lawe ʻana aku i nā pena pauka thermoplastic, aia ka huahana ka pauka polyethylene pena, pvc ka lehu pena, ka pauda nylon pena, a moena wai lako luu.

Moʻolelo Hoʻomohala o Thermoplastic Powder Pena

Mai ka pilikia o ka aila i nā makahiki 1970, ua ulu wikiwiki ka uhi ʻana o ka pauka ma muli o ka mālama ʻana i nā kumuwaiwai, ka launa ʻana i ke kaiapuni, a me ke kūpono no ka hana automated. ʻO ka pena pauka Thermoplastic (i kapa ʻia ʻo thermoplastic powder coating), kekahi o nā ʻano nui ʻelua o ka pena pauda, ​​hoʻomaka e puka mai i ka hopena o nā makahiki 1930.

I ka makahiki 1940, me ka hoʻomohala ʻana o ka ʻoihana petrochemical a me nā ʻoihana ʻē aʻe, ua hoʻonui wikiwiki ʻia ka hana ʻana o nā resins e like me polyethylene, polyvinyl chloride, a me ka resin polyamide, e alakaʻi ana i ka noiʻi ʻana i ka pena thermoplastic powder. I ka wā mua, makemake ka poʻe e hoʻohana i ka pale kemika maikaʻi o ka polyethylene e hoʻopili iā ia i ka uhi metala. Eia naʻe, ʻaʻole hiki ke hoʻoheheʻe ʻia ka polyethylene i loko o nā mea hoʻoheheʻe a ʻaʻole hiki ke hana ʻia i mea hoʻoheheʻe i hoʻopaʻa ʻia, a ʻaʻole i loaʻa nā mea hoʻopili kūpono e hoʻopili ai i ka pepa polyethylene i ka paia o loko. No laila, ua hoʻohana ʻia ka hoʻoheheʻe ʻana i ka lapalapa ahi e hoʻoheheʻe a hoʻokomo i ka pauka polyethylene ma ka ʻili metala, no laila e wehe ai i ka hoʻomaka ʻana o ka pena paʻa thermoplastic.

Ka uhi moe wai, ʻo ia ka mea i hoʻohana nui ʻia a hoʻohana pinepine ʻia no ka pena thermoplastic pauka, hoʻomaka me ke ʻano kāpīpī pololei i ka makahiki 1950. Ma kēia ʻano, kāpīpī ʻia ka pauka resin ma ka ʻili wela o ka mea hana e hana i kahi uhi. I mea e hana ai i ke ano o ka pipi ana, ua hoao maikai ia ke ano o ka uhi ana o ka moena wai ma Germany i ka makahiki 1952. O ke ano o ka uhi ana o ka moena wai e hoohana ana i ka ea a i ole ke kinoea inert i puhiia i loko o ka papa porous permeable ma lalo o ka moena wai e hana like. hoʻopuehu ʻia ka ea, ka mea e hoʻoheheʻe ʻia ai ka pauka i loko o ka moena wai i loko o kahi mokuʻāina kokoke i ka wai, i hiki ke hoʻohele like ʻia ka mea hana ma luna o ka ʻili o ka mea hana a loaʻa kahi maʻalahi a palahalaha.

ʻO nā ʻano a me nā mea maikaʻi a me nā pōʻino o ka Thermoplastic Powder Pena

I kēia manawa, loaʻa nā ʻano like ʻole e like me ka polyethylene/polypropylene ka pauda pauda, ​​polyvinyl chloride pauda, ​​nailon pauda, ​​polytetrafluoroethylene pauda, ​​a me thermoplastic polyester pauda. Ua hoʻohana nui ʻia lākou i ka pale ʻana i ke kaʻa, pipeline anti-corrosion, a me nā mea hale like ʻole.

Polyethylene (PE) a me ka uhi pauda polypropylene (PP).

ʻO ka polyethylene a me ka polypropylene kekahi o nā mea mua i hoʻohana ʻia i loko o ka pena wela thermoplastic a ʻo ia nā mea nui ʻelua nā polimer thermoplastic i ke kenekulia i hala. I kēia manawa, ua hoʻohana ʻia ka polyethylene kiʻekiʻe a me ka haʻahaʻa haʻahaʻa i ke kahua thermoplastic. Hoʻohana pinepine ʻia ka polyethylene kiʻekiʻe i ka ʻoihana ʻoihana, ʻoiai ʻo ka polyethylene haʻahaʻa haʻahaʻa e hoʻohana ʻia i ka pā kīwila.

No ka mea, ʻo ke kaulahao mole o ka polyethylene a me ka polypropylene he kalapona kalapona, loaʻa iā lāua nā hiʻohiʻona non-polar o nā olefins, no laila ʻo ka polyethylene a me ka polypropylene powder coatings he kūpaʻa kemika maikaʻi a hoʻohana nui ʻia i ke kahua anti-corrosion. Hoʻohana ʻia lākou e pale, mālama, a lawe i nā ipu, nā paipu, a me nā paipu aila no nā kemika a me nā reagents. Ma ke ʻano he mea inert, ʻo kēia ʻano pena pauka he hoʻopili maikaʻi ʻole i ka substrate a koi i ka mālama ʻana i ka ʻili o ka substrate, a i ʻole ka noi ʻana o ka primer a i ʻole ka hoʻololi ʻana o ka polyethylene me nā mea ʻē aʻe.

pono 

ʻO ka polyethylene resin ka mea i hoʻohana nui ʻia a hana ʻia i ka pena thermoplastic pauka.

Loaʻa iā ia nā pono aʻe:

1. ʻOi aku ka maikaʻi o ka pale wai, ka waikawa a me ka alkali, a me ka pale kemika;
2. Hoʻopili uila maikaʻi a me nā waiwai insulation wela;
3. ʻO ka ikaika tensile maikaʻi, ka maʻalahi, a me ke kū'ē i ka hopena;
4. ʻO ke kūpaʻa haʻahaʻa haʻahaʻa maikaʻi, hiki ke mālama i nā hola 400 me ka ʻole o ka haki ʻana ma -40 ℃;
5. ʻO ke kumukūʻai pili o nā mea maka he haʻahaʻa, ʻaʻohe mea ʻawaʻawa a pili kaiapuni.

'Aiʻino

Eia nō naʻe, ma muli o nā waiwai o ka substrate polyethylene, polyethylene powder paint kekahi mau hemahema hiki ʻole ke pale ʻia:

1. ʻO ka paʻakikī, ke kūpaʻa ʻana, a me ka ikaika mechanical o ka uhi ʻana he ʻilihune;
2. He ʻilihune ka hoʻopili ʻana o ka uhi a pono e mālama pono ʻia ka substrate;
3. ʻAʻole maikaʻi ka pale ʻana i ka wā, maʻalahi i ka pohā ma hope o ka ʻike ʻana i nā kukuna ultraviolet;
4. ʻAʻole kūʻē i ka wela kiʻekiʻe a maikaʻi ʻole i ka wela haʻahaʻa.

Polyvinyl chloride (PVC) ka uhi pauda

Polyvinyl chloride (PVC) he polimer amorphous i loaʻa i nā kristal i piha ʻole. ʻO ka hapa nui PVC loaʻa nā paona molekala ma waena o 50,000 a me 120,000 nā huahana resin. ʻOiai ke kaumaha molekala kiʻekiʻe PVC ʻoi aku ka maikaʻi o ke kino o nā resins, haʻahaʻa ke kaumaha molekala PVC ʻoi aku ka maikaʻi o nā resins me ka viscosity hoʻoheheʻe haʻahaʻa a me ka mahana palupalu e like me nā mea hana no ka pena thermoplastic pauka.

PVC he mea ʻoʻoleʻa a ʻaʻole hiki ke hoʻohana ʻia ma ke ʻano he mea pena pauda wale nō. I ka hana ʻana i nā uhi, pono e hoʻohui ʻia kahi nui o ka plasticizer e hoʻoponopono i ka maʻalahi o PVC. I ka manawa like, ʻo ka hoʻohui ʻana i nā plasticizers e hōʻemi i ka ikaika tensile o ka mea, modulus, a me ka paʻakikī. ʻO ke koho ʻana i ke ʻano kūpono a me ka nui o ka plasticizer hiki ke hoʻokō i ke kaulike i makemake ʻia ma waena o ka maʻalahi a me ka paʻakikī.

No ka piha PVC ʻO ke ʻano o ka pena pauka, he ʻāpana koʻikoʻi nō hoʻi nā stabilizers. No ka hoʻoponopono i ka paʻa wela o PVC, nā paʻakai hui ʻia o ka calcium a me ka zinc me ke kūpaʻa wela maikaʻi, barium a me cadUa hoʻomohala ʻia nā kopa mium, mercaptan tin, dibutyltin derivatives, epoxy compounds, etc. ʻOiai ua loaʻa i nā stabilizers ke kūpaʻa maikaʻi loa, ua kāpae ʻia lākou mai ka mākeke ma muli o nā kumu kūlohelohe.

I kēia manawa, ʻo nā huahana i hoʻohana nui ʻia no PVC ʻO ka pena pauda he mau mea pono hale like ʻole a me nā pahu holoi ipu. PVC maikaʻi ka holoi holoi ʻana a me ke kūʻē ʻana i nā meaʻai. Hiki iā lākou ke hoʻemi i ka walaʻau no nā kīʻaha kīʻaha. ʻO nā pā kīʻaha i uhi ʻia me PVC ʻAʻole e walaʻau nā huahana i ka wā e kau ai i ka papa ʻaina. PVC Hiki ke hoʻohana ʻia ka pauka e ka hoʻoheheʻe ʻia ʻana o ka moena a i ʻole ka hoʻoheheʻe electrostatic, akā makemake lākou i nā ʻāpana pauka ʻokoʻa. Pono e hoʻomaopopo ʻia kēlā PVC Hoʻopuka ka pena pauda i kahi ʻala ʻala i ka wā o ka uhi ʻia ʻana a he pōʻino i ke kino o ke kanaka. Ua hoʻomaka mua e pāpā ʻia kā lākou hoʻohana ʻana ma nā ʻāina ʻē.

pono

ʻO nā mea maikaʻi o ka pena polyvinyl chloride pauka:

1. Nā kumukūʻai maka haʻahaʻa;
2. ʻO ke kūpaʻa pollution maikaʻi, ka pale holoi, a me ka pale ʻana i ka corrosion;
3. ʻO ka ikaika mechanical kiʻekiʻe a me ka hana hoʻonā uila maikaʻi.

'Aiʻino

ʻO nā hemahema o ka polyvinyl chloride pauka pena:

1. ʻO ka ʻokoʻa wela ma waena o ka wela heheʻe a me ka wela decomposition o PVC liʻiliʻi ka resin. I ka wā o ka uhi ʻana, pono e mālama pono ʻia ka mahana e pale ai i ka decomposing.
2. ʻAʻole kūpaʻa ka uhi i nā hydrocarbons aromatic, esters, ketones, a me nā mea hoʻoheheʻe chlorinated, etc.

ʻO ka polyamide (nylon) ka pauka

ʻO ka polyamide resin, i kapa ʻia ʻo nylon, he resin thermoplastic i hoʻohana nui ʻia. Loaʻa i ka Nylon nā waiwai piha maikaʻi loa, ka paʻakikī kiʻekiʻe, a me ke kūpaʻa kūʻokoʻa. He liʻiliʻi nā coefficients dynamic a me static friction o nā uhi nylon, a he lubricity ko lākou. No laila, hoʻohana ʻia lākou i nā bearings machinery textile, gears, valves, etc. ʻO nā uhi ʻo Nylon pauka i ka lubricity maikaʻi, haʻahaʻa haʻahaʻa, hoʻololi maikaʻi, adhesion maikaʻi, kūpaʻa kemika, a me ke kūpaʻa ʻana. Hiki iā lākou ke hoʻohana ʻia e like me ke kapa komo-kūpono a me ka lubricating e pani i ke keleawe, aluminika, cadmium, kila, a me nā mea ʻē aʻe. ʻO 1/7 wale nō o ke keleawe ka nui o ke kiʻi ʻoniʻoni uhi nylon, akā ʻewalu mau manawa o kona pale ʻana i ke keleawe.

ʻAʻohe mea ʻawaʻawa, ʻaʻala ʻole, a ʻono ʻole ka pauka o ka nylon. I ka hui pū ʻana me ka ʻoiaʻiʻo ʻaʻole hiki iā lākou ke komo i ka fungal invasion a i ʻole e hāpai i ka ulu ʻana o ka bacteria, ua hoʻohana maikaʻi ʻia lākou i ka ʻoihana hoʻoponopono meaʻai e kāʻei i nā ʻāpana mīkini a me nā ʻōnaehana pipeline a i ʻole e uhi i nā wahi e pili pono ana me ka meaʻai. Ma muli o kona wai maikaʻi a me ka wai paʻakai, hoʻohana maʻamau ia no ka uhi ʻana i nā ʻāpana mīkini holoi, etc.

ʻO kahi hoʻohana koʻikoʻi o nā ʻāpana pauka nylon e ʻaʻahu i nā ʻano lima like ʻole, ʻaʻole wale no ka mea he mau hiʻohiʻona koʻikoʻi lākou e like me ke kūpaʻa ʻana a me ka pale ʻana, akā no ka haʻahaʻa haʻahaʻa haʻahaʻa e hoʻomāmā ai nā lima. ʻO kēia ka mea i kūpono loa i kēia mau mea no ka uhi ʻana i nā mea paahana, nā lima puka, a me nā huila hoʻokele.

Ke hoʻohālikelike ʻia me nā pale ʻē aʻe, ʻoi aku ka maikaʻi o nā kiʻiʻoniʻoni uhi nylon a ʻaʻole kūpono no ka hoʻohana ʻana i nā wahi kemika e like me nā waikawa a me nā alkalis. No laila, hoʻohui pinepine ʻia kekahi mau epoxy resins e like me nā mea hoʻololi, ʻaʻole hiki ke hoʻomaikaʻi wale i ke kūpaʻa corrosion o nā uhi nylon akā hoʻomaikaʻi pū i ka ikaika paʻa ma waena o ke kiʻi ʻoniʻoni a me ka substrate metala. He kiʻekiʻe ka nui o ka hoʻoheheʻe wai ʻana o ka pauka Nylon a hiki ke maʻalahi i ka makū i ka wā o ke kūkulu ʻana a me ka mālama ʻana. No laila, pono e mālama ʻia ma lalo o nā kūlana i hoʻopaʻa ʻia a ʻaʻole pono e hoʻohana ʻia no ka wā lōʻihi ma lalo o nā kūlana haʻahaʻa a wela. ʻO kekahi ʻano ʻē aʻe e hoʻomaopopo ʻia ʻo ia ka manawa pōkole o ka pauka nylon, a ʻo kahi kiʻi ʻoniʻoni ʻaʻole pono i ka plasticizing hiki ke hoʻokō i ka hopena i makemake ʻia, ʻo ia kahi hiʻohiʻona o ka pauka nylon.

Polyvinylidene fluoride (PVDF) pena pauka

ʻO ka uhi paʻa kūʻokoʻa i ka wā i loko o ka pena paʻa thermoplastic he polyvinylidene fluoride (PVDF) ka pauka pauka. Ma ke ʻano he ethylene polymer ʻoi aku ka maikaʻi o ka wā, hiki i ka PVDF ke kūʻē i ka mīkini a me ka hopena, ke kūpaʻa maikaʻi loa, ka maʻalahi a me ka paʻakikī, a hiki ke pale aku i ka nui o nā kemika corrosive e like me nā waikawa, nā alkalis, a me nā oxidants ikaika. Eia kekahi, ʻaʻole hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe kemika i hoʻohana mau ʻia i ka ʻoihana uhi, ʻo ia ke kumu o nā paʻa FC i loko o PVDF. Ma ka manawa like, hoʻokō pū ʻo PVDF i nā koi o ka FDA a hiki ke hoʻohana ʻia i ka hana ʻana i ka meaʻai a hiki ke hoʻopili me ka meaʻai.

Ma muli o kona viscosity hoʻoheheʻe kiʻekiʻe, ʻoi aku ka maikaʻi o ka PVDF i nā pinholes a me ka hoʻopili metala maikaʻi ʻole i ka uhi kiʻiʻoniʻoni lahilahi, a ʻoi aku ka kiʻekiʻe o ke kumu kūʻai. No laila, i ka hapanui o nā hihia, ʻaʻole ia i hoʻohana ʻia ma ke ʻano he kumu kumu hoʻokahi no ka uhi lepo. ʻO ka maʻamau, ma kahi o 30% o ka resin acrylic e hoʻohui ʻia e hoʻomaikaʻi i kēia mau waiwai. Inā kiʻekiʻe loa ka ʻike o ka resin acrylic, e hoʻopilikia ia i ke kū ʻana o ka wā o ke kiʻi uhi.

He haʻahaʻa haʻahaʻa ka ʻōlinolino o ke kiʻi ʻoniʻoni PVDF, ma kahi o 30±5%, e kaupalena ana i kāna noi ʻana i ka hoʻonaninani ʻili. I kēia manawa, hoʻohana nui ʻia ia e like me ka uhi hale no nā hale nui, i hoʻopili ʻia i nā panela o ka hale, nā paia, a me nā puka aniani alumini extruded, me ke kūpaʻa maikaʻi loa.

E hoʻohana i ka wikiō