ntchito

Poly(vinyl chloride) Poly(vinyl chloride)

PVC ndi polyvinyl kolorayidi pulasitiki, mtundu wowala, kukana dzimbiri, olimba ndi cholimba, chifukwa Kuwonjezera wa plasticizer, odana ndi ukalamba wothandizila ndi zinthu zina poizoni wothandiza popanga ndondomeko, kotero mankhwala ake ambiri sasunga chakudya ndi mankhwala.

PVC ndi polyvinyl chloride, yomwe ndi pulasitiki yopangidwa ndi 43% mafuta ndi 57% mchere.Poyerekeza ndi mitundu ina ya zinthu zapulasitiki, PVC imagwiritsa ntchito zida zopangira bwino komanso imachepetsa kugwiritsa ntchito mafuta.Panthawi imodzimodziyo, kugwiritsa ntchito mphamvu zopangira PVC ndizochepa kwambiri.Ndipo mochedwa ntchito mankhwala PVC, akhoza zobwezerezedwanso ndi kusandulika zinthu zina zatsopano kapena incineration kupeza mphamvu.

PVC pakupanga idzawonjezera stabilizer, koma stabilizer ili ndi mfundo zopanda poizoni ndi poizoni, ingowonjezera mchere wotsogolera monga stabilizer woopsa, udzatulutsa zoopsa zobisika.Koma zinthu za PVC ndizosakanizika, mabizinesi ena ang'onoang'ono amagwiritsa ntchito mchere wotsogolera ngati stabilizer, ndizovuta kukwaniritsa miyezo yoyenera yaumoyo.Ogula akasankha zinthu za PVC, ndibwino kupita kumsika wanthawi zonse wa zida zomangira ndi mbiri yotsimikizika komanso mtundu wake, ndikufunsa wogulitsa kuti apereke lipoti loyesa.Ogula ayenera kulabadira kuti aone zikalata zoyenera ndi zizindikiro, kupeza "zokhudzana ndi kumwa madzi akumwa thanzi chitetezo mankhwala chiphatso thanzi" mankhwala ndi otetezeka.

UPVC

Polyvinyl chloride yolimba (UPVC)

UPVC, yomwe imadziwikanso kuti hard PVC, ndi utomoni wa amorphous thermoplastic wopangidwa ndi vinyl chloride monomer ndi polymerization reaction ndi zina zowonjezera (monga stabilizer, lubricant, filler, etc.).

Kuphatikiza pa kugwiritsa ntchito zowonjezera, njira yophatikizira kusinthidwa ndi ma resin ena imatengedwanso, kuti ikhale ndi phindu lodziwikiratu.Ma resins awa ndi CPVC, PE, ABS, EVA, MBS ndi zina zotero.

The kusungunuka mamasukidwe akayendedwe a UPVC ndi mkulu ndipo fluidity ndi osauka.Ngakhale kuthamanga kwa jekeseni ndi kutentha kwasungunuka kumawonjezeka, madzi amadzimadzi sangasinthe kwambiri.Kuonjezera apo, kutentha kwapangidwe kwa utomoni kumakhala pafupi kwambiri ndi kutentha kwa kutentha kwa kutentha, ndipo kutentha kwa utomoni kumatha kupangidwa kumakhala kochepa kwambiri, kotero ndi mtundu wa zinthu zovuta kupanga.

Zopangira mapaipi a UPVC, ubwino wa chitoliro

Opepuka: Gawo la zinthu za UPVC ndi 1/10 chabe yachitsulo choponyedwa, chosavuta kunyamula, kukhazikitsa ndi kuchepetsa ndalama.

Kukana kwamphamvu kwamankhwala: UPVC ili ndi asidi wabwino kwambiri komanso kukana kwapansi, kupatula asidi amphamvu ndi maziko pafupi ndi machulukitsidwe kapena othandizira amphamvu oxidizing atmaximun.

Non-conductive: UPVC chuma sangathe kuchititsa magetsi, ndipo si dzimbiri ndi electrolysis ndi panopa, kotero palibe chifukwa processing yachiwiri.

Sangathe kuwotcha, kapena kuyaka-kuthandizira, palibe nkhawa moto.

Kuyika kosavuta, mtengo wotsika: kudula ndi kugwirizanitsa ndizosavuta, kugwiritsa ntchito PVC glue kugwirizana mchitidwe watsimikizira kukhala chitetezo chabwino, ntchito yosavuta, mtengo wotsika.

Kukhalitsa: Kutentha kwabwino kwambiri, ndipo sikungaipitsidwe ndi mabakiteriya ndi bowa.

Kukana kutsika, kuthamanga kwapamwamba: khoma lamkati ndi losalala, kutaya kwamadzimadzi kumakhala kochepa, dothi silophweka kumamatira ku khoma losalala la chubu, kukonza kumakhala kosavuta, mtengo wokonza ndi wotsika.

Polypropylene polypropylene polypropylene polypropylene

PP ndi polypropylene pulasitiki, sanali poizoni, zoipa, akhoza ankawaviika 100 ℃ madzi otentha popanda mapindikidwe, palibe kuwonongeka, asidi wamba, alkali organic solvents pafupifupi alibe mphamvu pa izo.Amagwiritsidwa ntchito kwambiri podyera ziwiya.

Polypropylene idapangidwa ndi polypropylene monomer.Chigawo chachikulu chinali polypropylene.Malinga ndi zikuchokera monomer nawo polymerization, zikhoza kugawidwa mu mitundu iwiri: homogeneous polymerization ndi copolymerization.Homopolymer polypropylene ndi polymerized kuchokera ku propylene monomer imodzi ndipo imakhala ndi crystallinity yapamwamba, mphamvu zamakina ndi kukana kutentha.Copolymerized polypropylene ndi copolymerized powonjezera pang'ono ethylene monomer.

Zake zazikulu:

1. Maonekedwe ndi mawonekedwe a thupi: mtundu wachilengedwe, tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono ta phula;Non-poizoni, zoipa, moto lawi lachikasu buluu, pang'ono utsi wakuda, kusungunuka akukhamukira, parafini fungo.

2. Kugwiritsa ntchito kwakukulu ndi kutulutsa: The polypropylene yomwe imasonkhanitsidwa pamsika imagwiritsidwa ntchito kwambiri pazinthu zolukidwa, zomwe zimagwiritsidwa ntchito kwambiri, zitha kugwiritsidwa ntchito ngati matumba oluka, zingwe zonyamula, lamba woluka, chingwe, kuchirikiza kapeti ndi zina zotero, kutulutsa kwake pachaka kuposa 800,000 matani, mlandu 17% ya okwana linanena bungwe polypropylene.

PE Polyethylene polyethylene

PE ndi pulasitiki ya polyethylene, katundu wokhazikika wa mankhwala, nthawi zambiri amapanga matumba a zakudya ndi zotengera zosiyanasiyana, asidi, alkali ndi madzi amchere kuti asakokoloke, koma sayenera kupukuta kapena kunyowa ndi zotsukira zamchere zamphamvu.

PPR

Mwachisawawa copolymer polypropylene

1. Ponena za Copolymer, copolymer imatchedwa Homonolymer.A copolymer amene copolymers kwa awiri kapena kuposa monomers amatchedwa copolymer;

;2. Ponena za Propylene ndi Ethene, PP-B ndi PP-R kukhala Poly poly Copolymer;mwa iwo,

1) Pogwiritsa ntchito njira zapamwamba za gasi copolymerization, PE imapangidwa mwachisawawa komanso mofanana ndi polymerized mu unyolo wama cell a PP, zopangira izi zimatchedwa PP-R (mwachisawawa copolymerization polypropylene);

2) Pogwiritsa ntchito PP ndi PE chipika copolymerization, zopangira izi amatchedwa PP-B (block copolymerization polypropylene)

PEX

Polyethylene yolumikizidwa (PEX)

Chitoliro cholumikizidwa cha polyethylene (PEX) chitoliro

Wamba mkulu kachulukidwe polyethylene (HDPE ndi MDPE) mapaipi, amene macromolecules ndi liniya, ndi kuipa lalikulu kukana osauka kutentha ndi kukwawa kukana, kotero wamba mkulu osalimba polyethylene mipope si oyenera kufalitsa sing'anga ndi kutentha kuposa 45 ℃."Cross-linking" ndi njira yofunikira yosinthira polyethylene.The liniya macromolecular kapangidwe polyethylene amakhala PEX ndi atatu azithunzithunzi maukonde dongosolo pambuyo mtanda kulumikiza, amene kwambiri bwino kutentha kukana ndi kukwawa kukana polyethylene.Pakalipano, kukana kwake kukalamba, mphamvu zamakina ndi kuwonekera zimasintha kwambiri.Pa nthawi yomweyo cholowa chibadidwe mankhwala dzimbiri kukana ndi kusinthasintha wa polyethylene chitoliro.Pali mitundu itatu yamachubu a PEX omwe amapezeka pamalonda.PEXa chitoliro PEXb chitoliro PEXC chitoliro

Zithunzi za PEX tube

Kutentha kwabwino kwambiri komanso kukana kuzizira, mphamvu yotentha kwambiri pakutentha kwakukulu:

Kulimba kwabwino kwa kutentha kochepa:

Kutentha popanda kusungunuka:

Kukana kwamphamvu kopitilira muyeso: Deta ya Creep ndiye maziko ofunikira pamapangidwe azinthu ndikusankha zaukadaulo.Poyerekeza ndi zida zachikhalidwe monga zitsulo, kupsinjika kwa mapulasitiki kumadalira kwambiri nthawi yotsegula ndi kutentha.Mayendedwe a PEX chubu ndi pafupifupi mapaipi abwino kwambiri pakati pa mapaipi apulasitiki wamba.Kukana kwamphamvu kopitilira muyeso: Deta ya Creep ndiye maziko ofunikira pamapangidwe azinthu ndikusankha zaukadaulo.Poyerekeza ndi zida zachikhalidwe monga zitsulo, kupsinjika kwa mapulasitiki kumadalira kwambiri nthawi yotsegula ndi kutentha.Mayendedwe a PEX chubu ndi pafupifupi mapaipi abwino kwambiri pakati pa mapaipi apulasitiki wamba.

Semi-permanent service moyo:

Chubu cha PEX chitatha kuyesa kutentha kwa 110 ℃, kupsinjika kwa mphete za 2.5MPa ndi nthawi ya 8760h, zitha kudziwika kuti moyo wake wopitilira zaka 50 pa 70 ℃.