Little Known Facts About pvc.
Little Known Facts About pvc.
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UV-ljus och temperatur anses vara de faktorer som svarar fileör den huvudsakliga nedbrytningen vid utomhusåldring av plast. I likhet med andra plaster bryts PVC ned av solljus. Den fotokemiska nedbrytningen accelereras vid höjd temperatur.
PVC output involves a process known as polymerization, whereby monomers of vinyl chloride are chemically bonded to form a polymer chain. The 2 most important sorts of polymerization applied are suspension polymerization and emulsion polymerization.
パイプなどのように、断面形状がシンプルな形状の製品を作るのに適しています。口金の形状を変えることで、押し出される製品も形を変えられます。
Bear in mind, PVC board will not be especially solid on its own, so it will require a base or assist program to circumvent bending or breaking.
PVC was synthesized in 1872 by German chemist Eugen Baumann immediately after prolonged investigation and experimentation.[twelve] The polymer appeared to be a white good inside of a flask of vinyl chloride that had been left on a shelf sheltered from sunlight for four weeks. Within the early 20th century, the Russian chemist Ivan Ostromislensky and Fritz Klatte of the German chemical company Griesheim-Elektron each attempted to employ PVC in commercial goods, but troubles in processing the rigid, at times brittle polymer thwarted their attempts.
The molecular construction of PVC includes a long-chain polymer with repeating vinyl chloride models. Just about every vinyl chloride device is made up of one particular carbon atom double-bonded to the chlorine atom and one-bonded to two hydrogen atoms.
PVC is generally developed as being a rigid or unplasticized polymer (RPVC) or as a versatile plastic (uPVC). Versatile, plasticized or normal PVC is softer and more amenable to bending than uPVC due to addition of plasticizers like phthalates for example diisononyl phthalate or DINP.
پلی‌وینیل کلراید به‌وسیلهٔ پلیمریزاسیون مونومر وینیل کلراید شکل می‌گیرد. تولید تجارتی قسمت اعظم پی‌وی‌سی عمدتاً از طریق بسپارش تعلیقی انجام می‌شود و از بسپارش‌های توده‌ای و امولسیونی به میزان کمتر و از بسپارش محلولی به ندرت استفاده شباك pvc می‌شود. پلی‌وینیل کلراید از بلورینگی ناچیزی برخوردار بوده اما به علت زنجیرهای حجیم بسپار (نتیجهٔ استخلاف بزرگ کلر) از استحکام و سختی برخوردار است. تی جی برای آن بالا و به میزان ۸۱ درجهٔ سانتی‌گراد است ولی میزان این تی جی آن‌قدر بالا نیست که فرایند با روش‌های گوناگون را دچار مشکل کند.
Adaptable PVC is usually used in construction as insulation on electrical wires or in flooring for properties, hospitals, educational institutions, and various areas exactly where a sterile natural environment is essential. Rigid PVC can also be used in building as pipe for plumbing and siding that is often identified as
دستگاه‌های فرم دادن: شامل یک یا چند پیچ مته‌ای گردان است.
新たなクライアントを発見！製造業のデジタルマーケティングを始めるには
ディッピング加工は、ペンチなどの取っ手を保護するカバーのように、皮膜を形成する際に活用されている加工方法です。
Packaging: PVC’s flexibility and resistance to oil and grease ensure it is an outstanding option for food packaging.
PVC’s flexible Qualities have resulted in its extensive use in several sectors. Some prevalent programs incorporate: