Iimpawu zokusetyenziswa kwe-hydroxypropyl methylcellulose kwishishini le-PVC

Intshayelelo ngeHydroxypropyl Methylcellulose (HPMC)

IHydroxypropyl methylcellulose, eyaziwa njenge-HPMC, iphuma kwi-cellulose eguqulwe kwi-cellulose yendalo.Isetyenziswa kakhulu kulwakhiwo, amayeza, ukutya kunye namanye amashishini, ngakumbi kwishishini lePVC.Ikhompawundi ngumgubo omhlophe, ongenavumba kunye nokunyibilika kwamanzi okugqwesileyo kunye noluhlu lweempawu ezibonakalayo kunye neekhemikhali ezenza ukuba zilungele usetyenziso oluhlukeneyo.

Iimpawu eziphuculweyo zerheological:

Elinye lamagalelo amakhulu e-HPMC kwishishini le-PVC yimpembelelo yayo kwiipropati ze-rheological.Isebenza njenge-rheology modifier, echaphazela ukuhamba kunye nokuguqulwa kwee-PVC compounds ngexesha lokucubungula.Oku kubaluleke kakhulu kwiinkqubo zokubumba kunye nenaliti.

Ukuphucula ukunamathela kwePVC:

I-HPMC iyaziwa ngokukwazi ukuphucula ukunamathela, nto leyo kwishishini le-PVC lithetha ukudibanisa okungcono phakathi kweekhompawundi ze-PVC kunye nezinye izinto.Oku kubaluleke kakhulu kwimveliso ye-PVC edibeneyo kunye nemixube, apho ukudibanisa okuqinileyo kobuso kubalulekile ekusebenzeni kakuhle.

Ukugcinwa kwamanzi kunye nokuzinza:

Kwimiqulu ye-PVC, kubalulekile ukugcina umxholo wamanzi kumanqanaba athile ngexesha lokucubungula.I-HPMC isebenza njenge-arhente yokugcina amanzi, ikhusela ukoma ngaphambi kwexesha kunye nokuqinisekisa amanqanaba amanzi angaguqukiyo.Oku kubaluleke kakhulu kwizicelo apho i-hydration state ye-PVC compound ichaphazela iipropati zemveliso yokugqibela.

Ukukhutshwa kwezicelo ezilawulwayo:

I-HPMC isoloko isetyenziswa kunye ne-PVC kwimixube yokukhululwa elawulwayo.Oku kuqhelekileyo kwizicelo zezolimo apho iinkqubo zePVC zisetyenziselwa ukulawula ukukhutshwa kwezichumisi okanye izibulala-zinambuzane.Iimpawu ezizinzileyo kunye neziqikelelwayo zokuchithwa kwe-HPMC ziququzelela ukukhululwa okulawulwayo.

Impembelelo kwiipropati zefilimu yePVC:

Ukongeza i-HPMC kwi-PVC formulations inokuchaphazela iipropati zefilimu ephumayo.Oku kubandakanya imiba efana nokuguquguquka, ukungafihli kunye namandla omatshini.Ngokuxhomekeke kwiimfuno ezithile zemveliso yokugqibela, i-HPMC inokwenziwa ngokwezifiso ukunika ifilimu yePVC iipropati ezifunwayo.

Ubushushu kunye nokumelana ne-UV:

Iimveliso zePVC zihlala zifunwa ukumelana noluhlu lweemeko zokusingqongileyo.I-HPMC iphucula ukusebenza ngokubanzi kwePVC ngokwandisa ukuxhathisa kwayo kutshintsho lobushushu kunye nemitha ye-UV.Oku kubaluleke kakhulu kwizicelo zangaphandle apho i-PVC ibonakaliswe ekukhanyeni kwelanga kunye nemozulu.

Izibophelelo kunye nee-arhente ezixhomayo:

I-HPMC isetyenziswe njenge-binder kwi-PVC formulations, incedisa ukubumbana kweengqungquthela kunye nokukhuthaza ukubunjwa kwee-clumps ezifanayo.Ukongezelela, isebenza njenge-ejenti yokumisa, ukuthintela iinqununu ukuba zingahlali kwaye ziqinisekise ukusabalalisa okufanayo ngaphakathi kwe-matrix ye-PVC.

Lungiselela umlinganiselo weresiphi:

Ukusebenza kwe-HPMC kwizicelo zePVC kaninzi kuxhomekeke kwireyishini yokwenziwa.Ukulinganisa ugxininiso lwe-HPMC kunye nezinye izongezo kunye ne-PVC resin kubalulekile ekuphumezeni iimpawu ezinqwenelekayo zemveliso yokugqibela.

Ukuhambelana nezinye izongezo:

Ukuhambelana nezinye izongezo, iiplasticizers kunye nezinzisi yinkalo ephambili yokubandakanya i-HPMC kwi-PVC formulations.Ukuqinisekisa ukuba i-HPMC isebenzisana ngokubambisana namanye amacandelo kubalulekile ukugcina ukusebenza kunye nokuzinza kwe-PVC.

Iimeko zokuqhubekekisa:

Iimeko zokucubungula, kubandakanywa ubushushu kunye noxinzelelo ngexesha lokukhupha okanye ukubumba, kunokuchaphazela ukusebenza kwe-HPMC.Ukuqonda uzinzo lwe-thermal kunye neemfuno zokusetyenzwa kwe-HPMC kubalulekile ekuphuculeni inkqubo yokuvelisa.

ukuququmbela

Isishwankathelo, i-hydroxypropyl methylcellulose idlala indima eninzi kwishishini le-PVC, inceda ukuphucula iimpawu zokucubungula, ukunamathela, ukugcinwa kwamanzi kunye nokusebenza ngokubanzi kweemveliso ezisekelwe kwi-PVC.Njengoko ishishini liqhubeka nokuvela, iipropati ezizodwa ze-HPMC ziya kuqhubeka zisetyenziswa kwizicelo ezitsha kunye nokuqhubela phambili kwitekhnoloji yePVC.Njengoko abaphandi kunye nabavelisi bephengulula nzulu kwintsebenziswano phakathi kwe-HPMC kunye ne-PVC, amandla okwenziwa kwezinto ezintsha kunye neemveliso eziphuculweyo zePVC makhulu kakhulu.