isicelo

Poly(vinyl chloride) Poly(vinyl chloride)

I-PVC yiplastiki ye-polyvinyl chloride, umbala oqaqambileyo, ukuxhathisa i-corrosion, iqinile kwaye ihlala ixesha elide, ngenxa yokongezwa kwe-plasticizer, i-agent anti-aging kunye nezinye izinto eziyityhefu ezincedisayo kwinkqubo yokuvelisa, ngoko ke iimveliso zayo azigcini ukutya kunye neziyobisi.

I-PVC yi-polyvinyl chloride, eyimveliso yeplastiki eyenziwe nge-43% yeoli kunye ne-57% yetyuwa.Xa kuthelekiswa nezinye iintlobo zeemveliso zeplastiki, iPVC isebenzisa imathiriyeli ekrwada ngokufanelekileyo kwaye inciphisa ukusetyenziswa kwamafutha.Ngexesha elifanayo, ukusetyenziswa kwamandla okwenziwa kwePVC kuphantsi kakhulu.Kwaye ekusetyenzisweni kade kweemveliso zePVC, zinokuphinda zisetyenziswe kwaye ziguqulelwe kwezinye iimveliso ezintsha okanye ukutshiswa ukuze kufumaneke amandla.

I-PVC kwimveliso iya kongeza i-stabilizer, kodwa i-stabilizer inamaphuzu angenabuthi kunye netyhefu, yongeza kuphela ityuwa ekhokelayo njenge-stabilizer enobuthi, iya kuvelisa iingozi ezifihlakeleyo.Kodwa iimveliso ze-PVC zixutywe, amanye amashishini amancinci asebenzisa ityuwa ekhokelela njenge-stabilizer, kunzima ukuhlangabezana nemigangatho yezempilo efanelekileyo.Xa abathengi bekhetha imathiriyeli ye-PVC, kungcono ukuya kwimakethi yezixhobo zokwakha eziqhelekileyo kunye nodumo oluqinisekisiweyo kunye nomgangatho, kwaye ucele umthengisi ukuba akhuphe ingxelo yovavanyo.Abathengi kufuneka banikele ingqalelo ukukhangela amaxwebhu afanelekileyo kunye namanqaku, bafumane "ezinxulumene nokusela amanzi okusela ilayisensi impilo yokhuseleko iimveliso zempilo" iimveliso zikhuselekile.

UPVC

Ipolyvinyl chloride eqinile (UPVC)

I-UPVC, eyaziwa ngokuba yi-PVC enzima, yi-amorphous thermoplastic resin eyenziwe nge-vinyl chloride monomer ngokuphendula kwe-polymerization kunye nezongezo ezithile (ezifana ne-stabilizer, i-lubricant, filler, njl.).

Ukongeza ekusebenziseni izongezo, indlela yokudibanisa ukuguqulwa kunye nezinye ii-resin nazo zamkelwa, ukuze zibe nexabiso elibonakalayo elibonakalayo.Ezi resin ziyi-CPVC, i-PE, i-ABS, i-EVA, i-MBS kunye nokunye.

I-viscosity enyibilikayo ye-UPVC iphezulu kwaye i-fluidity ayilunganga.Nokuba uxinzelelo lwenaliti kunye nobushushu obunyibilikayo bunyukile, ulwelo olumanzi aluyi kutshintsha kakhulu.Ukongeza, ubushushu bokwenza i-resin busondele kakhulu kwiqondo lokushisa lokubola kwe-thermal, kwaye uluhlu lweqondo lokushisa lwe-resin lunokwakheka luncinci kakhulu, ngoko luhlobo lwezinto ezinzima ukwenza.

Ukufakelwa kombhobho we-UPVC, iingenelo zombhobho

I-Lightweight: Umlinganiselo wezinto ze-UPVC yi-1/10 kuphela yentsimbi etyhidiweyo, kulula ukuyihambisa, ukufaka kunye nokunciphisa iindleko.

Ukumelana neekhemikhali eziphezulu: I-UPVC ine-asidi egqwesileyo kunye nokumelana nesiseko, ngaphandle kwe-asidi eyomeleleyo kunye nesiseko esikufutshane ne-saturation point okanye i-oxidising agents eqinile kwi-atmaximun.

I-non-conductive: Izinto ze-UPVC azikwazi ukuqhuba umbane, kwaye aziyi kugqweswa yi-electrolysis kunye ne-current, ngoko akukho mfuneko yokucubungula okwesibini.

Ayikwazi ukutshisa, okanye ukuxhasa ukutsha, akukho nkxalabo yomlilo.

Ufakelo olulula, ixabiso eliphantsi: ukusika kunye nokudibanisa kulula kakhulu, ukusetyenziswa kwePVC yokudibanisa iglue practice kubonakalise ukhuseleko olungcono, ukusebenza okulula, ixabiso eliphantsi.

Ukuqina: Ubume bemozulu obugqwesileyo, kwaye ayinakonakaliswa ziibhaktheriya kunye nomngundo.

Ukuchasana okuphantsi, izinga lokuhamba okuphezulu: udonga lwangaphakathi luhamba kakuhle, ukulahleka kwamanzi okuhamba kwamanzi kuncinci, ukungcola akulula ukunamathela kwindonga ye-tube egudileyo, ukugcinwa kulula, iindleko zokugcina ziphantsi.

Iipolypropylene iipolypropylene iipolypropylene

I-PP yiplastiki ye-polypropylene, ayinayo ityhefu, ayinancasa, inokugalelwa kwi-100 ℃ yamanzi abilayo ngaphandle kokuguqulwa, akukho monakalo, i-asidi eqhelekileyo, izinyibilikisi ze-alkali eziphilayo ziphantse zingabi nampembelelo kuyo.Isetyenziswa kakhulu ekutyeni izitya.

I-polypropylene yenziwe i-polymerized yi-polypropylene monomer.Inxalenye ephambili yayiyipolypropylene.Ngokokwakheka kwe-monomer ethatha inxaxheba kwi-polymerization, inokwahlulwa ibe ziindidi ezimbini: i-polymerization ene-homogeneous kunye ne-copolymerization.I-Homopolymer polypropylene i-polymerized ukusuka kwi-propylene monomer enye kwaye ine-crystallinity ephezulu, amandla omatshini kunye nokumelana nobushushu.I-polymerized polypropylene i-copolymerized ngokudibanisa inani elincinci le-ethylene monomer.

Iimpawu zayo eziphambili:

1. Ukubonakala kunye neempawu zomzimba: umbala wendalo, iinqununu ze-cylindrical zimhlophe kunye ne-translucent, i-waxy;Ayinatyhefu, ayinancasa, ivutha idangatye elityheli, umsi omncinci omnyama, ukunyibilika okuvuzayo, ivumba leparafini.

2. Ukusetyenziswa okuphambili kunye nemveliso: I-polypropylene eqokelelwe kwimarike isetyenziselwa kakhulu iimveliso ezilukiweyo, ezisetyenziswa kakhulu, zingasetyenziselwa iingxowa ezilukiweyo, intambo yokupakisha, ibhanti elukiweyo, intambo, ukuxhasa ikhaphethi njalo njalo, imveliso yayo yonyaka engaphezulu kwe. I-800,000 yeetoni, i-akhawunti ye-17% yesiphumo esipheleleyo se-polypropylene.

I-PE Polyethylene i-polyethylene

I-PE yiplastiki ye-polyethylene, iipropati ezizinzileyo zeekhemikhali, zihlala zenza iingxowa zokutya kunye nezikhongozeli ezahlukahlukeneyo, i-asidi, i-alkali kunye nokhukuliseko lwamanzi etyuwa, kodwa akufanele lucinywe okanye lufakwe nge-alkaline detergent.

PPR

Random copolymer polypropylene

1. Ngokuphathelele kwi-Copolymer, i-copolymer ibizwa ngokuba yiHomonolymer.I-copolymer eyenza i-copolymers kwii-monomers ezimbini okanye ngaphezulu ibizwa ngokuba yi-copolymer;

;2. Ngokumalunga nePropylene kunye ne-Ethene, i-PP-B kunye ne-PP-R ibe yiPoly poly Copolymer;phakathi kwabo,

1) Ukusebenzisa inkqubo ye-copolymerization yegesi ephezulu, i-PE i-random kunye ne-uniformly polymerized kwi-molecular chain ye-PP, le nto eluhlaza ibizwa ngokuba yi-PP-R (i-polymerization e-random polypropylene);

2) Ukusebenzisa i-PP kunye ne-PE ibhloko ye-copolymerization, le nto eluhlaza ibizwa ngokuba yi-PP-B (ibhloko ye-polymerization polypropylene)

I-PEX

Ipolyethylene edityanisiweyo (PEX)

Umbhobho we-polyethylene odibeneyo (PEX) ukuqaliswa kombhobho

Imibhobho ye-polyethylene yoxinaniso oluphezulu (HDPE kunye ne-MDPE), enee-macromolecules ezingqameneyo, zinobunzima obukhulu bokunganyangeki ubushushu kunye nokuxhathisa ubushushu, ngoko ke imibhobho ye-polyethylene yoxinaniso oluphezulu ayifanelekanga ukuhanjiswa okuphakathi kunye nobushushu obungaphezulu kwama-45℃."I-Cross-linking" yindlela ebalulekileyo yokuguqulwa kwe-polyethylene.I-linear macromolecular structure ye-polyethylene iba yi-PEX kunye nesakhiwo sothungelwano esine-ntathu-dimensional emva kokudibanisa, ephucula kakhulu ukuxhathisa ubushushu kunye nokuxhathisa kwe-polyethylene.Okwangoku, ukuxhathisa ukuguga, iimpawu zoomatshini kunye nokungafihli ziphuculwe kakhulu.Kwangaxeshanye lizuze ilifa uxhathiso lwendalo lwekhemikhali kunye nokuguquguquka kombhobho we-polyethylene.Kukho iintlobo ezintathu zeetyhubhu zePEX ezifumanekayo kurhwebo.PEXa umbhobho PEXb umbhobho PEXC umbhobho

Iimpawu ze-tube ye-PEX

Ubushushu obugqwesileyo kunye nokumelana nokubanda, amandla aphezulu e-thermal kubushushu obuphezulu:

Ukuqina okugqwesileyo kokumelana nobushushu obuphantsi:

Ukufudumeza ngaphandle kokunyibilika:

Ukuxhathisa okungaqhelekanga: Idatha yeCreep sisiseko esibalulekileyo soyilo lwemveliso kunye nokukhethwa kwezinto zobunjineli.Xa kuthelekiswa nezinto zemveli ezifana nesinyithi, indlela yokuziphatha kweeplastiki ixhomekeke kakhulu kwixesha lokulayisha kunye nobushushu.Uphawu lokurhubuluza lwetyhubhu ye-PEX phantse yenye yeyona mibhobho ifanelekileyo phakathi kwemibhobho yeplastiki eqhelekileyo.Ukuxhathisa okungaqhelekanga: Idatha yeCreep sisiseko esibalulekileyo soyilo lwemveliso kunye nokukhethwa kwezinto zobunjineli.Xa kuthelekiswa nezinto zemveli ezifana nesinyithi, indlela yokuziphatha kweeplastiki ixhomekeke kakhulu kwixesha lokulayisha kunye nobushushu.Uphawu lokurhubuluza lwetyhubhu ye-PEX phantse yenye yeyona mibhobho ifanelekileyo phakathi kwemibhobho yeplastiki eqhelekileyo.

Ubomi benkonzo obungenasiphelo:

Emva kokuba ityhubhu ye-PEX iphumelele uvavanyo lwe-110 ℃ yobushushu, i-2.5MPa yoxinzelelo lwendandatho kunye nexesha le-8760h, inokufunyanwa ukuba ubomi bayo obuqhubekayo benkonzo yeminyaka engama-50 kwi-70 ℃.