Kune akawanda marudzi ePVC foam zvigadzirwa, kunyanya zvinosanganisira dzakaoma furo zvinhu uye zvinyoro zvefuro zvinhu (senge zvinhu chete, dehwe rekugadzira, nezvimwewo). Microporous plastiki imhando yefuro ine dhayamita ye1 ~ 10 μ M, furo density ye1X109 ~ 1 × 1012 / cm3 nyowani furo zvinhu. Kuenzaniswa nemapurasitiki asina furo, kuwanda kwemapurasitiki ane microporous kunogona kudzikiswa ne5% ~ 95%. Mushure me microcellular furo, PVC haingogone kuderedza density uye kuchengetedza mutengo, asi zvakare kuve nezvakawanda zvakanakisa zvemuviri uye zvemichina zvinhu, senge uremu huremu, kusimba kwesimba, kusimba kwepamusoro, kunaka kwekupisa kwekupisa uye kuita kwemazwi ekudzivirira, yakaderera conductivity uye kupisa conductivity, kutaridzika kwakanaka, asidhi uye alkali kushorwa, hunyoro-uchapupu uye hunopesana nekuora, murazvo unodzoreredza uye usingatsvage moto, saizi yakagadzikana, kuumbwa kuri nyore, kupenya kwepamusoro, kudhinda kana kupfeka, nyore kugadzirisa Kuramba kwemamiriro ekunze (kunogona kushandiswa kunze) uye kumwe kuita kwepamusoro.

wakisi yePVC furo zvigadzirwa

Yakaomeswa PVC diki ine furo zvinhu zvine huwandu hwakasiyana hwekushandisa, zvinosanganisira mapuranga ane furo (senge mabhodhi etsoka ane furo, madziro ane furo, mapaneru emadziro uye sirin'i, mataira aneruvara padenga, nezvimwewo), pombi dzine furo (senge pombi dzekudzivirira netambo, pombi dzemvura. yemigwagwa nenjanji, pombi dzekuvaka pombi dzesuweji, pombi dzekudiridza dzekurima, pombi dzekudzivirira maindasitiri, nezvimwewo), maprofiles ane furo (senge njanji dzemaketeni, maprofile evhavha evhavha, mapikicha egonhi nemahwindo Balcony panel profile, yemukati nekunze pasi, nezvimwewo) .

① Kupupa kwemahara kunoreva iyo isingarambidzwe yemahara yekuwedzera yekunyunguduka painongosiya kufa, uye yobva yapinda mugadziriso mudziyo nehukuru hukuru mushure menguva pfupi yenguva. Kupupa kwemahara kunoita kuti mabhubhu ese aumbe pamuchinjiko weiyo extrudate. Kukura kwemabhubhu epamusoro kunogumira nekutonhodza, uye pakupedzisira kuenderera kuzere, kuomarara kwepakati pepamusoro uye chigadzirwa chakatsetseka chinoumbwa. Iyi nzira ine zvakanakira maitiro akareruka uye akakodzera kugadzira zvigadzirwa zvine ukobvu hwe2 ~ 6mm, nyore geometry uye yakagomara nzvimbo (senge mapaipi, mashiti uye maprofiles ane nyore geometry).
② Iyo yemukati yekupupa nzira, ganda rinopupuma kana nzira yeceluka inotora yakakosha kufa ine musimboti mukati kuti iparadzanise zvinhu zvepurasitiki, mudziyo wekuseta wakabatana nefa, uye kunze kwayo contour yakafanana neiyo yefa. Kana iyo inotumirwa kune yekumisikidza sleeve pamberi peinofa, iyo inonyunguduka ine furo agent inopinda mune inotonhora yekumisikidza sleeve painongobuda mumuromo firimu, uye inopinda nekukurumidza kutonhora pamusoro pese, kuitira kudzivirira kuumbwa. yehuputi hwepamusoro uye chero kuzvimba pane chikamu che extrudate, kuitira kuti igadzire ganda repamusoro. Panguva imwecheteyo, iyo yepakati mufa inoita kuti gomba riumbwe mune semi-yapera chigadzirwa chakazadzwa nefuro rakaumbwa neakasara akanyungudika, ndiko kuti, kupupa mukati. Nekudzora kutonhora kwakanyanya, zvigadzirwa zvine ukobvu hwepamusoro hwe0.1 ~ 10mm uye ukobvu hwemadziro echigadzirwa kupfuura 6mm zvinogona kuwanikwa. Iyi nzira inogona kuburitsa maprofile ane yakaoma muchinjiko-chikamu chimiro. Zvigadzirwa zvine hunhu hwekutsetseka kwepamusoro, kuomarara kwepamusoro uye kuderera kwakadzika munzvimbo yepakati. Uye zvakare, nekubatanidza iyi nzira nenzira ①, chigadzirwa chine ganda kune rimwe divi uye yakasununguka mamiriro kune rimwe divi chinogona kuwanikwa.

③ Coextrusion inoshandisa musoro wakasanganiswa uye maviri ekunze kuburitsa iyo isiri kupupa pamusoro pedhiri uye inopupuma core layer zvichiteerana. Izvo zvakasiyana-siyana kana fomula yezvikamu zviviri zvepurasitiki zvinogona kugadziridzwa zvinoenderana nezvinodiwa kuti zvigadzirwa zvisangane nedensity uye saizi inodiwa nechiyero. Mazhinji epakati foam pombi anogadzirwa muChina anogadzirwa neichi maitiro.
Kunyangwe nzira nhatu dziri pamusoro apa dzekugadzirisa dziine hunhu hwadzo mukuumbwa kwefomati, chimiro chekufa uye kugadzira tekinoroji, maitiro ekudzora furo maitiro ekunyungudika uye kuwana inogutsa sero chimiro ndiro dambudziko rakajairika mukuita extrusion. Kupupuma kwekupedzisira kwegasi rakanyungudutswa mukunyunguduka kunoitika "kamwe kamwe" mushure mekunyungudika kwasiya kufa. Mushure mekunge kunyunguduka kwasiya kufa, nekuda kwekudonha kwakangoerekana kwaitika uye nekushanduka kwekushisa, gasi rakanyungudutswa riri munzvimbo ine supersaturated, gasi-mvura yemvura-maviri-chikamu kupatsanurwa, uye huwandu hukuru hwema microbubbles anoumbwa pane nucleation. point. Saizi yekukura kwebubble inotsamira pane yakazara mhute kudzvanywa kwegasi rekuora uye ductility uye simba rekunyungudika pacharo. Kune rumwe rutivi, pasi pechiito chekumanikidza gasi, mabhubhu anoramba achikura; Kune rimwe divi, kusimba uye ductility yekunyunguduka kunodzikamisa kukura kwemabhuru uye kuona kuti mabubbles anotsemuka here kana kubatanidza. Kamwe simba rekuwedzera rekunze kwegasi rakaenzana neve viscoelastic simba rinowedzera nekunyunguduka nekuda kwekutonhora, richatonhodzwa uye kuumbwa pakarepo kuchengetedza chimiro chebubble uye kudzivirira kuparara kwebubble. Mune chaiyo extrusion foaming process, chinhu chakakosha chinokanganisa kunaka kwezvigadzirwa zvine furo kudzora chizvarwa uye kukura kwemabhuru kuumba diki, yunifomu uye yakazvimirira maseru zvimiro.
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