Yintoni onokuyenza ukuba umgangatho wabalawuli be-PVC ugwebu umbi?

Ngethuba lenkqubo ye-foaming yezinto eziphathekayo, igesi ebolileyo yi-ejenti ye-foaming yenza amaqamza ekunyibilikeni. Kukho umkhwa wamaqamza amancinci ayandayo ukuya kumaqamza amakhulu kula maqamza. Ubungakanani kunye nobuninzi bamaqamza abuhambelani kuphela nenani le-ejenti yogwebu eyongeziweyo, kodwa kunye namandla e-polymer melt. Ukuba ubunzulu buphantsi kakhulu, irhasi inokubaleka ngokulula xa isasazwa isiya kumphezulu wokunyibilika, kwaye amaqamza amancinci adibane omnye komnye ukwenza amaqamza amakhulu. Amatyathanga amade eemolekyuli ezilawuli ezigwebu amagwebu zibopheleleke kwaye zibambelele kumatyathanga emolekyuli ePVC, zenza ulwakhiwo oluthile lomnatha. Ngakolunye uhlangothi, ikhuthaza iplastiki yezinto eziphathekayo, kwaye kwelinye icala, iphucula amandla e-PVC yokunyibilika, ukwenzela ukuba udonga lweseli ye-foam lukwazi ukumelana noxinzelelo lwegesi ngaphakathi kwiseli ye-foam ngexesha lenkqubo yokukhupha amagwebu, ukuze ingagqabhuki. ngenxa yokungonelanga kwamandla. Abalawuli be-Foam banokwenza ii-pores zemveliso zibe zincinci kwaye zininzi, kunye nesakhiwo esifanayo kunye nengqiqo, ukunciphisa kakhulu ubuninzi bomzimba we-foam. Umgangatho ophantsi okanye ukungonelanga kwedosi yokulawula amagwebu kunokukhokelela kumandla aphantsi wegwebu, okukhokelela ekugqabhukeni okanye amaqamza eentambo.

Ubunzima be-molecular kunye ne-viscosity yabalawuli be-foaming abaveliswa ngabavelisi abahlukeneyo bahluka kakhulu. Xa iimveliso ezinogwebu ziqhekeza okanye amaqamza entambo, kunye nezinye iindlela zingasebenzi, ukubuyisela umlawuli ogwebu amagwebu okanye ukwandisa umthamo ngokufanelekileyo kunokuvelisa iziphumo ezibalulekileyo. Nangona kunjalo, ukongeza okanye ukubuyisela izilawuli ezinogwebu ezinobunzima obuphezulu bemolekyuli kunokunyusa ubuninzi bemveliso ngenxa ye-viscosity egqithisileyo, ethintela ukwanda kwamaqamza ekunyibilikeni. Kwaye ngenxa ye-viscosity ephezulu yokunyibilika, i-fluidity iya kuhla, kubangele ukukhutshwa okungalinganiyo kokungunda, okuchaphazela ukuthambeka komphezulu wepleyiti, kunye nexesha elifutshane lokuvelisa, okukhokelela ekungaphumelelini kokuncamathisela komngundo, ngakumbi xa uvelisa iipleyiti ezinobunzima. ngaphantsi kwe-10mm.