ThePVC pombimagadzirirwo ane: PVC resin, kukanganisa modifier, stabilizer, kugadzirisa modifier, filler, pigment uye kunze lubricant.
1. PVC resin
Kuti uwane kukurumidza uye yunifomu plasticization, nzira yekumisa inofanira kushandiswa kusunungura resin.
—— Resin inoshandiswa pamapombi ane madziro ane marata maviri anofanira kunge aine huremu hwakanaka hwema molecular huremu uye zvine hutsvina, kuitira kuderedza “ziso rehove” mupombi uye kudzivirira kudhirika kwepombi uye kuputika kwemadziro epombi.
--Iyo resin inoshandiswa pamvura yepombi inofanira kuva ye "giredhi yehutsanana", uye yakasara vinyl chloride mu resin inofanira kuva mukati me 1 mg / kg.Kuti uone kunaka kwepombi uye kuderedza chiyero chakakanganisika, chitubu che resin chinofanira kugadzikana.
2. Stabilizer
Parizvino, iwo makuru ekudziya kupisa anoshandiswa muChina ndeaya: sipo dzesimbi, composite lead salt stabilizers, isingawanzo pasi inoumbwa inogadzirisa stabilizers, uye organic tin stabilizers.
Stabilizers ine heavy metals (yakadai sePb, Ba, Cd) inokuvadza kuhutano hwevanhu, uye chiyero chezvigadziro izvi mukugadzirwa kwepombi dzemvura inogumira.Mune imwe-screw extrusion process, iyo yekudziya nhoroondo yezvinyorwa yakareba kupfuura iyo mune mapatya-screw extrusion process, uye chiyero chekusimbisa mune yekare chinowedzerwa neinopfuura 25%.Tembiricha yemusoro wepombi-yemadziro yakashongedzwa pombi yakakwira, zvinhu zvinogara mumusoro kwenguva yakareba, uye huwandu hwekudzikamisa mufomura hunopfuura iyo yakajairwa pombi formula.
3. Filler
Basa remafiritsi nderokudzikisa mari.Edza kushandisa ultra-fine active fillers (mutengo wepamusoro).Huwandu hwezvinhu zvepombi yakakura kupfuura iyo yemaprofile.Yakawandisa kuwanda kwekuzadza kunokonzeresa kushomeka kwekushomeka kuderera uye kushomeka kwepombi kuderera.Naizvozvo, mumapombi emakemikari uye mapaipi ekupa mvura, huwandu hwekuzadza mumakopi asingasviki gumi.Huwandu hwekuzadza mupombi yekudonhedza uye inotonhora-yakaumbwa tambo sleeve inogona kuwanda, uye huwandu hweCPE hunogona kuwedzerwa kushandura kudonha kwekuita kwekuita.
Kune mapaipi ane zvakaderera zvinodiwa pakuita kwepombi, uye mapaipi emvura, huwandu hwekuzadza hunogona kuve hwakakura, asi kupfeka kwetwin-screw extruder kwakakomba.
4. Modifier
(1) Kugadziridza modifier: zvakajairika mapaipi anogona kushandiswa zvishoma kana kwete;marata uye mapaipi ane madziro matete anonyanya kushandiswa.
(2) Impact modifier: shoma dosage pane profiles, nezvikonzero zviviri: 1. Performance, yakaderera tembiricha kuramba, tensile simba 2. Mutengo
(3) Zvimwe zvinowedzera, mavara, nezvimwewo: Kana iyo profil inoshandiswa seanorwisa kukwegura, titanium dioxide inofanira kuwedzerwa.Iyo fomula yeiyo yakaoma PVC pombi inonyanya kuve pigment, kunyanya titanium dioxide kana kabhoni dema, iyo inogona kusarudzwa zvichienderana nechitarisiko chinodiwa pombi.
5. Kufananidza kwekunze kwemafuta uye stabilizer
(1) Sarudza iyo inoenderana yekunze lubricant zvinoenderana nekudzikamisa
a.Organotin stabilizer.Iyo organic tin stabilizer ine yakanaka kuenderana nePVC resin, uye ine yakakomba tsika yekunamatira kumadziro esimbi.Mafuta ekunze akachipa anowirirana nawo iparafini-based paraffin-calcium stearate system.
b.Kutungamira munyu stabilizer.Lead salt stabilizer haina kuenderana nePVC resin, uye inongonamatira pamusoro pePVC zvidimbu, izvo zvinotadzisa kusanganiswa pakati pePVC zvimedu.Kazhinji, lead stearate-calcium stearate yekunze lubricant inoshandiswa kuifananidza.
(2) Kuwanda kwemafuta ekunze.Kana kugadzirisa huwandu hwemafuta ekunze kuchiri kusakwanisa kuzadzisa zvinodiwa zvekugadzirisa zvinhu, unogona kufunga nezve kuwedzera hushoma hwemukati lubricant.Kana iyo inokanganisa toughening modifier inoshandiswa, nekuda kweiyo yakakwira melt viscosity, mukana wekunamatira kune simbi pamusoro wakakwira, uye huwandu hwemafuta ekunze kazhinji hunoda kuwedzerwa;Iyo pombi yakakobvu-yakapetwa inoda mamwe mafuta ekunze.Kana kupisa kwekugadzirisa kwakakwirira, tsika yekunyunguduka kunamatira kune simbi yepamusoro yakakwirira, uye mamwe mafuta ekunze anowedzerwa.
Mapaipi ePVC anogadzirwa sei?
Mapaipi ePVC anogadzirwa neextrusion yeraw material PVC, uye anowanzo kutevedzera nhanho dzakafanana dzeakajairika pombi extrusion mashandiro:
- Kudyisa mapellets / poda muPVC twin screw extruder
- Kunyungudika uye kupisa munzvimbo dzakawanda dze extruder
- Kubuditsa nemufa kuti uumbe kuita pombi
- Kutonhodza kwepombi yakagadzirwa
- Kucheka kwePVC mapaipi kusvika paurefu hunodiwa
Nguva yekutumira: Jul-04-2022