PVC lub cev thiab tshuaj muaj zog

Shenzhen Shenchuang Hi-tech Electronics Co., Ltd (SChitec) yog lub tuam txhab ua haujlwm siab uas tshwj xeeb hauv xov tooj accessories ntau lawm thiab muag khoom. Peb cov khoom tseem ceeb muaj xws li kev mus ncig, chargers tsheb, USB cables, fais fab nyiaj hauv tuam txhab nyiaj thiab lwm yam khoom siv digital.Tag nrho cov khoom muaj kev nyab xeeb thiab txhim khu kev qha, nrog cov cim styles.products dhau daim ntawv pov thawj xws li CE, FCC, ROHS, UL, PSE, C-Tick, thiab lwm yam. , Yog tias koj txaus siab rau, koj tuaj yeem tiv tauj ceo@schitec.com ncaj qha.

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PVC lub cev thiab tshuaj muaj zog

Lub ntuj xim yog yellowish translucent thiab ci iab. Transparency yog zoo dua li polyethylene, polypropylene, thiab txawv ntawm polystyrene. Nws muab faib ua mos thiab tawv polyvinyl chloride raws li tus nqi ntawm additives. Cov khoom muag muag yog mos thiab tawv, thiab tes xav tias nplaum. Lub hardness ntawm cov khoom tawv yog siab dua li cov uas tsis muaj ntom polyethylene. Hauv qab polypropylene, whitening tshwm sim ntawm qhov khoov. ruaj khov; tsis yooj yim corroded los ntawm acid los yog alkali; ntau resistant rau tshav kub.

Polyvinyl chloride muaj nplaim taws retardancy (nplaim retardancy tus nqi ntawm 40 los yog ntau tshaj), tshuaj tiv thaiv siab (concentrated hydrochloric acid, 90% sulfuric acid, 60% nitric acid thiab 20% sodium hydroxide), txhua yam muaj zog thiab zoo ntawm cov hluav taws xob rwb thaiv tsev zoo.

Polyvinyl chloride muaj qhov tsis zoo rau lub teeb thiab cua sov. Qhov taw tes softening yog 80 degree C thiab decomposition pib ntawm 130 degree C. Yog tsis muaj cua sov lub stabilizer, polyvinyl chloride pib decompose ntawm 100 degree C, thiab decomposes sai ntawm 130 degree C los yog siab dua. Nws yog decomposed los ntawm tshav kub kom tso hydrogen chloride gas (hydrogen chloride gas yog ib tug toxic gas) kom discolor, los ntawm dawb → teeb daj → liab → xim av → dub. Cov rays ultraviolet thiab oxygen nyob rau hauv lub hnub ci ua rau cov duab-oxidative decomposition ntawm polyvinyl chloride, yog li txo qhov yooj ntawm polyvinyl chloride thiab thaum kawg ua nkig. Nws tsis yooj yim to taub los ntawm no yog vim li cas qee cov PVC yas tig daj thiab ua nkig tom qab ntev.

Nws muaj qhov ruaj khov physicochemical zog, yog insoluble hauv dej, cawv, roj av, thiab muaj roj tsawg thiab dej vapor to. Nws tuaj yeem tiv taus cov ntsiab lus ntawm hydrochloric acid, 90% lossis tsawg dua sulfuric acid, 50-60% nitric acid thiab 20% lossis tsawg dua ntawm qhov kub thiab txias. Cov tshuaj caustic soda muaj qee yam tshuaj tiv thaiv; Nws yog qhov ruaj khov rau cov ntsev, tab sis tuaj yeem yaj hauv cov kuab tshuaj organic xws li ethers, ketones, chlorinated aliphatic hydrocarbons thiab muaj ntxhiab hydrocarbons.

Muaj polyvinyl chloride resin feem ntau yog amorphous qauv, tab sis kuj muaj qee thaj tsam crystalline (kwv yees li 5%). Yog li ntawd, PVC tsis muaj qhov pom tseeb melting point, thiab pib muag ntawm li 80 degree. Qhov kub distortion kub (hauv qab 1.82 MPa load) yog nyob ntawm 70-71 degree C, qhov ntws pib ntawm 150 degree C nyob rau hauv siab thiab pib maj mam tso hydrogen chloride, ua rau cov polyvinyl chloride hloov xim (los ntawm daj mus rau liab, xim av, los yog txawm dub).

Qhov hnyav nruab nrab molecular hnyav ntawm industrial polyvinyl chloride yog nyob rau hauv thaj tsam ntawm 4. Qhov hnyav nruab nrab molecular hnyav ntawm feem ntau cov resins yog nyob nruab nrab ntawm 100, 000 thiab 200, 000, thiab tus naj npawb nruab nrab molecular hnyav yog nyob nruab nrab ntawm 4.55 thiab 64, 000. Rigid polyvinyl chloride (tsis muaj plasticizer) muaj lub zog zoo txhua yam, huab cua tsis kam thiab nplaim taws. Nws tuaj yeem siv ib leeg los ua cov khoom siv rau kev ua tshuaj lom neeg ntawm cov kav dej, daim hlau thiab cov khoom txhaj tshuaj molded. Rigid polyvinyl chloride tuaj yeem siv nrog cov khoom siv ntxiv.