Iindlela Zokuphucula Iimpawu zePVC - Indima Yezongezo.

I-resin ye-PVC efunyenwe kwi-polymerization ayizinzanga kakhulu ngenxa yozinzo lwayo oluphantsi lobushushu kunye ne-viscosity ephezulu yokunyibilika. Ifuna ukuguqulwa ngaphambi kokuba icutshungulwe ibe ziimveliso ezigqityiweyo. Iimpawu zayo zingaphuculwa/ziguqulwe ngokongeza izongezo ezininzi, ezinje ngeziqinisi zobushushu, iziqinisi ze-UV, iiplastiki, izilungisi zempembelelo, izizalisi, izithinteli zomlilo, ii-pigment, njl.njl.

Ukukhethwa kwezi zongezo zokuphucula iipropati zepolymer kuxhomekeke kwimfuno yokusetyenziswa kwayo. Umzekelo:

1. Iiplastiki (iiPhthalates, iiAdipates, iiTrimellitate, njl.njl.) zisetyenziswa njengeearhente zokuthambisa ukuphucula ukusebenza kwe-rheological kunye noomatshini (ukuqina, amandla) kweemveliso zevinyl ngokunyusa ubushushu. Izinto ezichaphazela ukukhethwa kweeplastiki zevinyl polymer zezi: Ukuhambelana kwepolymer ； Ukuguquguquka okuphantsi ； ixabiso.

2. I-PVC inozinzo oluphantsi kakhulu kubushushu kwaye iziqinisi zinceda ekuthinteleni ukuwohloka kwe-polymer ngexesha lokucubungula okanye ukuvezwa ekukhanyeni. Xa iphantsi kobushushu, ii-vinyl compounds ziqala i-self-accelerating dehydrochlorination reaction kwaye ezi ziqinisi zithintela i-HCl eveliswayo ephucula ubomi be-polymer. Izinto ekufuneka ziqwalaselwe xa kukhethwa isiqinisi sobushushu zezi: iimfuno zobugcisa ； Ukwamkelwa okumiselweyo ； iindleko.

3. Izizalisi zongezwa kwiikhompawundi zePVC ngezizathu ezahlukeneyo. Namhlanje, isizalisi singaba sisongezelelo sokusebenza ngokwenyani ngokubonelela ngexabiso ngeendlela ezintsha nezinomdla ngexabiso eliphantsi kakhulu lokwenziwa. Zinceda eku: nyuseni ukuqina namandla, ukuphucula ukusebenza kwempembelelo, ukongeza umbala, ukungabonakali kunye nokuqhuba kunye nokunye.

I-calcium carbonate, i-titanium dioxide, udongwe olune-calcium, iglasi, i-talc njl. ziintlobo eziqhelekileyo zezizalisi ezisetyenziswa kwi-PVC.

4. Ii-lubricants zangaphandle zisetyenziselwa ukunceda ukudlula kakuhle kwe-PVC melt kwizixhobo zokucubungula. Ngelixa ii-lubricants zangaphakathi zinciphisa i-melt viscosity, zithintela ubushushu obugqithisileyo kwaye ziqinisekisa umbala omhle wemveliso.

5. Ezinye izongezo ezifana nezixhobo zokucubungula, izilungisi zempembelelo, zongezwa ukuphucula iipropati zoomatshini kunye nezomphezulu wePVC.