Kukho iintlobo ezininzi zeemveliso zogwebu zePVC, ikakhulu ezibandakanya izixhobo zogwebu oluqinileyo kunye nezixhobo ezithambileyo zogwebu (ezifana nemathiriyeli yodwa, ngesikhumba sokwenziwa, njl.). Iplastiki ye-Microporous luhlobo lwe-foam kunye nobubanzi be-1 ~ 10 μ M, ubuninzi be-foam ye-1X109 ~ 1 × 1012 / cm3 izinto ezintsha ze-foam. Xa kuthelekiswa neeplastiki ezingenagwebu, ukuxinana kweeplastiki ezincinci kunokuncipha nge-5% ~ 95%. Emva kwe-microcellular foaming, i-PVC ayikwazi ukunciphisa uxinano kunye nokugcina iindleko kuphela, kodwa ibe neempawu ezininzi ezibalaseleyo zomzimba kunye noomatshini, ezifana nobunzima bokukhanya, amandla empembelelo ephezulu, ukuqina okuphezulu, ukugquma ubushushu obuhle kunye nokusebenza kwesandi, ukuhanjiswa okuphantsi kunye ne-thermal conductivity, imbonakalo entle, i-asidi kunye nokumelana ne-alkali, ubungqina bomswakama kunye ne-anti-corrosion, i-flame retardant kunye ne-fireproof, ubukhulu obuzinzile, ukubumba okulula, umbala wendawo, ukuprintwa okanye ukugquma, ukuqhutyelwa lula Ukumelana nemozulu elungileyo (inokusetyenziswa ngaphandle) kunye nokunye ukusebenza okuphezulu.

ingxinano yeemveliso zogwebu zePVC

Izinto eziqinileyo zePVC ezinogwebu ezincinci zinoluhlu olubanzi lwezicelo, kubandakanywa iibhodi ezinogwebu (ezifana neebhodi zeenyawo ezinogwebu, imicu eludongeni enogwebu, iipaneli zodonga kunye nesilingi, iithayile ezinophahla ezinemibala, njl.njl.), imibhobho enogwebu (efana nemibhobho yokukhusela intambo, imibhobho yokuhambisa amanzi yeendlela kunye noololiwe, imibhobho yogutyulo lwelindle, imibhobho yonkcenkceshelo yezolimo, imibhobho yokhuseleko kwimizi-mveliso, njl.njl.), iiprofayili ezinogwebu (ezifana neereyili zekhethini, iiprofayili zefreyimu eqengqelekayo, iiprofayili zocango kunye neefestile Iprofayili yephaneli yebalcony, umgangatho wangaphakathi nangaphandle, njl. njl.) .

① Ugwebu lwasimahla lubhekisa kulwandiso lwasimahla lokunyibilika olungathintelekiyo nje ukuba lushiye ukufa, kwaye emva koko lungene kwisixhobo sokucwangcisa ngobungakanani obukhulu emva kwexesha elifutshane. I-foaming yasimahla yenza ukuba zonke iiqamza zenze kwi-cross section ye-extrudate. Ukukhula kwamaqamza angaphezulu kunqandwa kukupholisa, kwaye ekugqibeleni ukuxinana okuqhubekayo, ubulukhuni obuphakathi komphezulu kunye nemveliso egudileyo yenziwa. Le ndlela ineenzuzo zenkqubo elula kwaye ifanelekile ukuvelisa iimveliso ezinobunzima obuyi-2 ~ 6mm, ijometri elula kunye ne-bull surface (efana nemibhobho, amaphepha kunye neeprofayili ezinejometri elula).
② Indlela yokugaya amagwebu yangaphakathi, indlela yokukhupha amagwebu eluswini okanye i-celuka ithatha idiyidi ekhethekileyo engundoqo ngaphakathi ukwahlula izinto ezenziwe ngeplastiki, isixhobo sokuseta sidityaniswe nedayiti, kwaye i-contour yayo yangaphandle iyafana neyokufa. Xa izinto zithunyelwa kumkhono wokucwangcisa phambi kwendawo yokungena, inyibilika equlethe i-arhente ekhupha ugwebu ingena kumkhono wokupholisa ngokukhawuleza xa ishiya ifilimu yomlomo, kwaye ipholisa ngokukhawuleza kuwo wonke umhlaba, ukwenzela ukuba kuthintelwe ukubunjwa. amaqamza angaphezulu kunye nakuphi na ukudumba kwicandelo le-extrudate, ukwenzela ukuba wenze umaleko wesikhumba phezu komhlaba. Ngelo xesha, i-core kwi-die yenza i-cavity eyenziwe kwi-semi-finished product egcwele i-foam eyenziwe yi-melt eseleyo, oko kukuthi, i-foam ngaphakathi. Ngokulawula ukuqina kokupholisa, iimveliso ezinobunzima bomphezulu obuyi-0.1 ~ 10mm kunye nobukhulu bodonga lwemveliso obungaphezulu kwe-6mm bunokufumaneka. Le ndlela inokuvelisa iiprofayili ezinemilo eyinkimbinkimbi yecandelo. Iimveliso zineempawu zobuso obugudileyo, ubunzima obuphezulu kunye noxinzelelo oluphantsi kwindawo engundoqo. Ukongeza, ngokudibanisa le ndlela kunye nendlela ①, imveliso enesikhumba kwelinye icala kunye nenkululeko kwelinye icala inokufumaneka.

③ I-Coextrusion isebenzisa intloko edibeneyo kunye ne-extruder ezimbini ukukhupha umaleko womphezulu ongaphumiyo kunye nomaleko onamagwebu ngokulandelelanayo. Iindidi okanye ifomula yemigangatho emibini yeeplastiki inokulungelelaniswa ngokweemfuno zokwenza iimveliso zihlangabezane nobuninzi kunye nobukhulu obufunwa ngumgangatho. Uninzi lwemibhobho ye-foam engundoqo eveliswa e-China iveliswa yile nkqubo.
Nangona ezi ndlela zintathu zokusetyenzwa zingentla zineempawu zazo ekubunjweni kwefomula, isakhiwo sokufa kunye neteknoloji yokucubungula, indlela yokulawula ukuziphatha okunogwebu lokunyibilika kunye nokufumana isakhiwo seseli esanelisayo yingxaki eqhelekileyo engundoqo kwinkqubo yokukhupha. Inkqubo yokugqibela yogwebu lwerhasi inyibilika ekunyibilikeni kwenzeka ngokwenene “ngequbuliso” emva kokuba inyibilika ishiya ukufa. Emva kokuba inyibilika ishiya ukufa, ngenxa yokuhla ngokukhawuleza koxinzelelo lwe-ambient kunye nokutshintsha kweqondo lobushushu, igesi enyibilikisiweyo ikwimeko ephezulu, ulwahlulo lwe-gas-liquid lwezigaba ezibini, kunye nenani elikhulu lee-microbubbles zenziwa kwi-nucleation. inqaku. Ubungakanani bokukhula kweqamza buxhomekeke kuxinzelelo lomphunga ozeleyo werhasi yokubola kunye ne-ductility kunye namandla okunyibilika ngokwawo. Ngakolunye uhlangothi, phantsi kwesenzo soxinzelelo lwegesi, iibhubhu zikhula ngokuqhubekayo; Ngakolunye uhlangothi, amandla kunye ne-ductility yokuncibilika kuya kuthintela ukukhula kwamaqamu kwaye kunqume ukuba amaqamza ayaphuka okanye adibanise. Emva kokuba amandla okwandisa angaphandle egesi alungelelaniswa kunye ne-viscoelastic force eyandiswe yi-melted ngenxa yokupholisa, iya kupholiswa kwaye ifakwe ngokukhawuleza ukugcina isakhiwo se-bubble kunye nokuthintela ukuwa kwe-bubble. Kweyona nkqubo i-extrusion foaming, eyona nto iphambili echaphazela umgangatho weemveliso ezinogwebu kukulawula ukuveliswa kunye nokukhula kwamaqamza ukwenza amaqamza amancinci, afanayo kunye nokuzimela.
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