Impembelelo yeZiqinisi zoBushushu kwiimveliso zePVC: Ukumelana noBushushu, ukuLungiseka, ukuFikelela

Eli phepha lihlola indlela izinto ezigcina ubushushu zisebenza ngayo kwiimveliso zePVC, ligxileukumelana nobushushu, ukuqhubekeka kokusebenza, kunye nokungafihli ntoNgokuhlalutya uncwadi kunye nedatha yovavanyo, sihlola ukusebenzisana phakathi kweziqinisi kunye ne-resin ye-PVC, kunye nendlela ezibumba ngayo uzinzo lobushushu, ukulula kokuvelisa, kunye neempawu zokukhanya.

1. Intshayelelo

I-PVC yi-thermoplastic esetyenziswa kakhulu, kodwa ukungazinzi kwayo kubushushu kuyayithintela indlela esebenza ngayo.Iziqinisi zobushushuukunciphisa ukonakala xa kushushu kakhulu kwaye kuchaphazele ukuqhubekeka kokusebenza kunye nokungafihlisi—kubalulekile kwizicelo ezifana nokupakisha kunye neefilimu zokwakha.

2. Ukumelana nobushushu kwee-Stabilizers kwi-PVC

2.1 Iindlela Zokuzinzisa

Izinzisi ezahlukeneyo (ezisekelwe kwi-lead,i-calcium - i-zinc, organotin) sebenzisa iindlela ezahlukeneyo:

Isekelwe kwinkokeli: Isabela ngeeathom zeCl ezikwiitsheyini zePVC ukuze zenze iicomplex ezizinzileyo, zithintele ukuwohloka.
I-calcium - i-zinc: Hlanganisa i-asidi – ukubopha kunye ne-radical – ukucoca.
I-Organotin (i-methyl/butyl tin): Sebenzisana neetsheyini zepolymer ukuthintela i-dehydrochlorination, ucinezele ngokufanelekileyo ukubola.

2.2 Ukuvavanya Uzinzo Lobushushu

Uvavanyo lwe-thermogravimetric analysis (TGA) lubonisa ukuba i-organotin- stabilized PVC ineqondo lobushushu eliphezulu lokubola kokuqala kuneenkqubo ze-calcium-zinc zemveli. Nangona iziqinisi ezisekelwe kwi-lead zibonelela ngozinzo lwexesha elide kwezinye iinkqubo, iinkxalabo zokusingqongileyo/zempilo ziyakuthintela ukusetyenziswa.

3. Iziphumo zokuSebenza

3.1 Ukunyibilika Komsinga kunye nokuxinana

Izinzisi zitshintsha indlela yokunyibilika kwePVC:

I-calcium - i-zinc: Inganyusa ukunyibilika kwe-viscosity, ithintele ukubunjwa kwe-extrusion/injection.
I-Organotin: Yehlisa i-viscosity ukuze kulungiswe kakuhle, kube lula ukucubungula ubushushu obuphantsi—ilungele imigca yesantya esiphezulu.
Isekelwe kwinkokeli: Ukuhamba okuphakathi kokunyibilika kodwa iifestile zokucubungula zimxinwa ngenxa yepleyiti - ngaphandle kweengozi.

3.2 Ukuthambisa kunye nokukhululwa kweMold

Ezinye izinto ezizinzisayo zisebenza njengezinto zokuthambisa:

Iifomyula zeCalcium – zinc zihlala ziquka izinto zokuthambisa zangaphakathi ukuphucula ukukhululwa kwesikhunta kwi-injection molding.
Iziqinisi ze-Organotin zonyusa ukuhambelana kwe-PVC - oko kukuthi, zinceda ngokungathanga ngqo ekuqhubekekeni nokusebenza.

4. Impembelelo ekubonakaleni

4.1 Ukusebenzisana nesakhiwo sePVC

Ukucaca kuxhomekeke ekusasazekeni kwe-stabilizer kwi-PVC:

Izithambisi ze-calcium-zinc ezisasazekileyo, ezincinci, zinciphisa ukusasazeka kokukhanya, zigcina ukukhanya kucacile.
Iziqinisi ze-Organotinzidityaniswe kwiityathanga zePVC, nto leyo enciphisa ukuphazamiseka kokukhanya.
Iziqinisi ezisekelwe kwi-lead (amasuntswana amakhulu, angasasazwanga ngokulinganayo) zibangela ukusasazeka kokukhanya okunzima, okunciphisa ukukhanya.

4.2 Iintlobo ze-Stabilizer kunye nokungafihli nto

Izifundo zokuthelekisa zibonisa:

Iifilimu ze-Organotin – ezizinzileyo ze-PVC zifikelela kwi-> 90% yokudlulisa ukukhanya.
Iziqinisi zeCalcium – zinc zivelisa i-~ 85–88% yokudluliselwa.
Iziqinisi ezisekelwe kwi-lead zisebenza kakubi.

Iziphene ezifana "ne-fish eyes" (ezinxulunyaniswa nomgangatho/ukusasazeka kwe-stabilizer) nazo zinciphisa ukucaca—iziqinisi ezikumgangatho ophezulu ziyazinciphisa ezi ngxaki.

5. Isiphelo

Izinto ezizinzisa ubushushu zibalulekile ekucutshungulweni kwePVC, ekwakheni ukumelana nobushushu, ukuqhubekeka kokusebenza, kunye nokungafihli nto:

Isekelwe kwinkokeli: Banika uzinzo kodwa bajongane nokusabela okungalunganga kokusingqongileyo.
I-calcium - i-zinc: Indalo – inobuhlobo kodwa ifuna ukuphuculwa kwindlela esebenza ngayo/ecacileyo.
I-Organotin: I-Excel kuzo zonke iinkalo kodwa ijongene nemiqobo yeendleko/yokulawula kwezinye iindawo.

Uphando lwexesha elizayo lufanele luphuhlise izinto ezizinzisayo ezilungelelanisa uzinzo, ukusebenza kakuhle kokucubungula, kunye nomgangatho wokukhanya ukuze kuhlangatyezwane neemfuno zoshishino.