Nā Mea Hana Hana (Thermoplastics)

Nā Mea Hana Hana (Thermoplastics): polymer® PTFE (Polytetrafluoroethylene),PVDF (Polyvinylidene Fluoride),PP (Polypropylene),CPVC (Chlorinated Polyvinyl Chloride),PVC (Polyvinyl Chloride)

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PVC (Polyvinyl Chloride)

ʻO ka koho ʻoi aku ka maikaʻi a me ka nui loa o nā pahu Chemline i hoʻoheheʻe ʻia mai PVC.Hāʻawi ia i nā waiwai kūʻē mechanical a me kemika maikaʻi loa ma ke kumu kūʻai haʻahaʻa.ʻO ka pae wela hana o nā kiwi PVC he 0 a 60 ° C (30 a 140 ° F).ʻO ka PVC i hoʻohana ʻia no nā kiwi Chemline e ʻike ʻia e ka helu helu helu 11564-A e like me ka ASTM Standard D 1784. ʻO ka suffix "A" e pili ana i ka helu kiʻekiʻe kiʻekiʻe.ʻO ka hapa nui o nā kiwi PVC ʻē aʻe e like me ka paipu a me nā mea hoʻopili i loaʻa i kahi helu kūʻē kemika "B".ʻO ke kūpaʻa kemika kiʻekiʻe o kēia mea hiki ke hoʻohana i kāna noi ma nā lawelawe koʻikoʻi e like me 98% H2 SO4, chlorine maloʻo a me ka haʻahaʻa haʻahaʻa haʻahaʻa wai chlorine kinoea.Hoʻouka ʻia ʻo PVC e nā hydrocarbons chlorinated, ketones, esters a me kekahi mau mea ʻala.Hiki ke ho'ohana 'ia ma luna o nā hā'ina i loa'a i ka 1000 ppm solvents. 'O Chemline PVC valves 'a'ole ia he mea make.Hoʻokō lākou i ka maʻamau CSA B137.0 no ka mea ʻawaʻawa. Kūʻē lākou i nā hopena pōʻino o ka lā a me ka ʻino, no laila ʻaʻole pono ke pena.

CPVC (Chlorinated Polyvinyl Chloride)

Ua like loa ka CPVC me ka PVC i nā waiwai mechanical a me ke kū'ē kemika.He kūpono ia no nā noi mai 0 a 95 ° C (30 a 200 ° F). ʻO ka pūhui CPVC kūikawā i hoʻohana ʻia no nā valves Chemline ua helu ʻia ʻo 23567-A e like me ASTM D 1784. ʻO ka suffix "A" e hōʻike ana i ka conformance i ka kemika kiʻekiʻe. helu kūʻē.ʻAʻole ʻawaʻawa ka pūhui, e like me ka CSA toxicity standard B137.0.CPVC valves ua hōʻike ʻia he koho maikaʻi loa no nā noi i nā mahana kiʻekiʻe no PVC a i ʻole ke koi ʻia kahi palena ʻē aʻe o ka palekana.

PP (Polypropylene)

He māmā ke kaumaha o PP a kiʻekiʻe i ka pale kemika.He kūpono nā pahu no ka lawelawe ʻana mai -20 a 90°C (-5° a 195°F).ʻAʻole pili ka PP i nā alkalais, nā paʻakai, nā mea hoʻoheheʻe organik a me ka hapa nui o nā waikawa, ʻoi aku ka hydrochloric a me ka phosphoric acid.ʻAʻole kūpono ia i nā ʻakika ikaika, chlorinated hydrocarbons, nā mea ʻala a me nā kiʻekiʻe kiʻekiʻe o ka chlorine manuahi. ke komo ʻana o nā kukui ultraviolet.E hoʻohaʻahaʻa ʻia nā mea translucent kūlohelohe me ka puaʻa ʻole inā ʻike ʻia i ke kukui UV (ke kukui lā).Hāʻawi ʻo Chemline i ka paipu PP, nā mea hoʻopili a me nā kīwaha i loko o ka pua puaʻa a me ka ʻole o ka pua PP, ʻae ʻia e ka FDA no ka hoʻopili ʻana me ka meaʻai.

PVDF (Polyvinylidene Fluoride)

ʻOi aku ka maikaʻi o ka PVDF ma mua o nā thermoplastics valve ʻē aʻe i ke kūpaʻa kemika a me ke kūʻē abrasion.Loaʻa iā ia ka ikaika kupaianaha ma luna o ka pae wela hana nui loa.ʻO ka pae wela hana o nā valves PVDF he -40 a 120 ° C (-40 a 250 ° F) . ʻO ka ikaika o ka hopena o PVDF ma mua o ʻelua o ka PVC.He lōʻihi loa nā kiwi ma lalo o ka hana hoʻomāinoino mechanical a hiki i -40°F.Hāʻawi pū lākou i ke kūpaʻa abrasion kiʻekiʻe loa o nā valves thermoplastic. He kūʻē kemika maikaʻi loa ka PVDF i nā halogens e like me ka chlorine a me ka bromine, nā waikawa ikaika e like me ka hydrofluoric a me nā waikawa nitric, nā mea hoʻoheheʻe organik a me nā aila.ʻAʻole kūpaʻa ʻo PVDF i nā kumu wela. ʻAʻole ia he mea ʻawaʻawa a ʻaʻole hāʻawi i nā mea ʻala a ʻono paha i ka wai.Kūlike kā mākou PVDF me ka USDA Title 21, P121.2593 koi no ka launa pū ʻana me ka meaʻai.Haʻahaʻa loa ke kinoea permeability o PVDF.Loaʻa ka patented PVDF gas permeability patent ma Type 14 a me DV Series Diaphragm Valves.He kākoʻo ia i ka polymer® diaphragm a ua hōʻoia i ka hoʻonui ʻana i ke ola o nā kīwaha diaphragm ma nā lawelawe chlorine a me ka waikawa ikaika.

polymer® PTFE (Polytetrafluoroethylene)

ʻO ka PTFE ʻaneʻane hiki ʻole ke hoʻoheheʻe ʻia a kemika inert.Loaʻa iā ia ke kūpaʻa wela kiʻekiʻe.polymer® PTFE poepoe noho, no ka maoli lubricity, koi ole lubrication.polymer® PTFE diaphragms a me flange gaskets ua hoʻohana 'ia i loko o ka oi loa koʻikoʻi noi kū'ē kemika.