Ama-Resins e-PVC asezingeni eliphezulu SG3, SG5, SG7: Ubunjiniyela Obufanelekele Izixazululo Zezimboni Zokuphela Kuya Ekupheleni

Umklamo Wama-Molecular kanye Nezimfanelo Ezibonakalayo

I-SG3 (Izinga Eliphezulu Lokuguquguquka)
Yakhiwe ngezinga le-polymerization elingu-1300 - 1500 kanye ne-K - inani elingu-70 - 72, leli banga liqukethe amaketanga amade ama-molecule athuthukisa ukubanjwa kwe-plasticizer. Ukusatshalaliswa kwayo kwezinhlayiya ezingu-60 - 250μm kuqinisekisa ukusabalala okufanayo ekwakhekeni kwe-compound ethambile, okuvumela ukumuncwa kwe-plasticizer okungu-25 - 35g nge-resin engu-100g. Isakhiwo esingenayo i-amorphous esiphumelayo sinikeza ukunwebeka okumangalisayo lapho kuphuka, okwenza kube kuhle kakhulu emikhiqizweni edinga ukugoba okuphindaphindiwe ngaphandle kokuqhekeka.

I-SG5 (Ibanga Eliphakathi Eliguquguqukayo)
Ilinganisela izinga le-polymerization lika-1000 - 1100 nenani lika-K elingu-65 - 67, i-SG5 inikeza indawo ephakathi enamandla. Ubuningi bayo bezinhlayiya obulungiselelwe kahle (0.45 - 0.58g/mL) busiza ukugeleza kokuncibilika okubushelelezi kokubili ekubunjweni kokukhipha kanye nokujova, kuyilapho ukumuncwa kwe-plasticizer okulinganiselwe (20 - 28g/100g) kuvumela ukuguquka kusuka kuma-sheath ekhebula aqinile kuya kumaphrofayili aguquguqukayo aphansi. Ukuhleleka kwe-molecular chain kunciphisa amaphutha okucubungula, kuqinisekisa ukujiya kodonga okuhlala njalo ekukhishweni kwamapayipi.

I-SG7 (Ibanga Lobunjiniyela Eliqinile)
Ngezinga le-polymerization elingu-700 - 850 kanye ne-K - inani elingu-60 - 62, i-SG7 ibeka phambili ukusebenza kahle kokupakisha kwama-molecule ukuze kube nokuqina. Isakhiwo sayo esincane sama-40 - 180μm sezinhlayiya (ubuningi obungu-0.50 - 0.62g/mL) sinciphisa izikhala ezingxenyeni ezibunjiwe, sithuthukisa ukumelana nokushayisana kumaphrofayili okwakha. Ukumuncwa kwe-plasticizer okuphansi (15 - 22g/100g) kuvumela ukwakheka okuqinile ngokuphelele, kuyilapho i-monomer ye-vinyl esele engu-≤3μg/g ihlangabezana nezindinganiso zokuphepha zokuxhumana kokudla kwezicelo zokupakisha.

Uhlelo Lokusebenza Lwemvelo

SG3: Uchwepheshe Wokuguquguquka
Emikhakheni yezolimo, amafilimu asekelwe ku-SG3 anezengezo zepulasitiki ezingama-40 - 50 phr akha izembozo ze-greenhouse ezizinzile ze-UV, ezilinganisa ukudluliselwa kokukhanya namandla okumelana nokunyembeza. Ngezicelo zezokwelapha, okuqukethwe kwayo okuphansi kwe-monomer kwenza amapayipi athambile emishinini ye-dialysis, kanti ezicathulweni, idala amathe anwebekayo agcina isimo sayo phakathi nokushintshashintsha kwezinga lokushisa.

I-SG5: Ihhashi Elisebenzayo Lezimboni
Abakhiqizi bezintambo basebenzisa ububanzi be-plasticizer be-SG5 obuyi-10 - 20 phr ukukhiqiza ama-sheath okushisa agcina ilangabi kumagridi kagesi, okuhlanganisa ukushisa kukagesi nokuqina komshini. Ekwakhiweni, iphuma ibe yimichilo yokuvala engangenisi isimo sezulu yamafasitela, lapho ubulukhuni bayo obuphakathi bumelana nokuwohloka kwe-ozone. Izingxenye zezimoto ezibunjiwe ngomjovo, njengezicabha, ziyazuza esilinganisweni sayo somthelela - amandla - kuya - isisindo.

I-SG7: Iqhawe Lokuqina
Izinhlelo zamapayipi ezimboni zithembele ku-modulus ephezulu ye-SG7 yamapayipi endle angamelani namakhemikhali kanye nezindawo zamanzi ezilawulwa umfutho. Amaphrofayili amafasitela akhishwe, uma exutshwe ne-titanium dioxide, abonisa ukuqina kombala okumangalisayo ezindaweni zangaphandle. Abakhiqizi bezinto zikagesi bayisebenzisela ukujova - izindlu zemishini ebunjiwe, besebenzisa ukuzinza kwayo okukhulu ngesikhathi sokuhlanganiswa kwezinga lokushisa eliphezulu.

Umhlahlandlela Wokuthuthukisa Inqubo

Ama-Nuances Okuphathwa Kokushisa
I-SG3 idinga ukulawulwa okuqinile kwezinga lokushisa (160 - 180°C) ukuvimbela ukubola ngaphambi kwesikhathi; ngisho nokuqhuma ngokweqile okungu-10°C kungabangela ukukhishwa kwe-hydrochloric acid, okuholela ekubeni phuzi. Ngokuphambene nalokho, i-SG7 ibekezelela ukucubungula okungu-180 - 200°C, okuvumela amazinga okukhipha okusheshayo kwamapayipi amakhulu, yize ukudlula okungu-210°C kuyingozi yokuqhekeka kwe-molecular chain.

Umklamo Wesistimu Engeziwe
Ukuzinza: I-SG3 idinga i-1 - 2 phr yeziqinisi ezihlanganisiwe ze-calcium - zinc ukuze ilwe nokuwohloka kokushisa ngesikhathi sokucubungula i-plasticizer ephezulu, kuyilapho i-SG7 idinga i-0.5 - 1 phr kuphela ngenxa yokucindezeleka okuncishisiwe okubangelwa yi-plasticizer.
Ukugcotshwa: Zonke izinhlobo zizuza ku-0.2 - 0.5 phr ye-wax ye-polyethylene, kodwa i-SG3 ingadinga imithamo ephezulu ukuze kuncishiswe ukungqubuzana kwangaphakathi ezingxubeni ezithambile.
Izithasiselo Ezisebenzayo: Ama-antioxidants kumafomula e-SG7 andisa impilo yenkonzo yangaphandle, kuyilapho ama-impact modifiers ku-SG5 athuthukisa ukumelana kwe-notch kwezicelo zesimo sezulu esibandayo.

Ubuchwepheshe Bokugqama Ekwakhiweni Kwe-Resin

Ngokuhlanganisa ubunjiniyela bama-molecule obunembile nokuhlolwa okuqhutshwa yisicelo, iphothifoliyo yethu ye-SG3, SG5, SG7 inika amandla abakhiqizi ukuthi badlule imikhawulo yendabuko ye-PVC. Kusukela ekuguquguqukeni okudingekayo kwezinto ezilahlwayo zezokwelapha kuya ekuqineni kwesakhiwo okudingwa ukwakhiwa okuphezulu, lawa ma-resin ahlanganisa ukuhlanganiswa kokuqina kwesayensi kanye nokusebenza kwezimboni—ukubeka izilinganiso ezintsha zezixazululo ze-polymer eziqhutshwa ukusebenza.

Imininingwane

Ishidi Lokulawula Ikhwalithi