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.
押出成形は、押出機のなかに溶融した原料を入れ、口金から押し出して成形する加工方法です。
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。
As the material is usually Lower into unique styles and sizes, it may be used for custom signals or sections.
موارد استفادهٔ فراوانی برای پیویسی شامل: وینیل سایدینگ، علامت مغناطیسی کارتها، برش عمودی پنجرهها، صفحات گرامافون، لوله، لولهکشی، کانال و لوازم نصبکردنی، کیفهای ارزانقیمت، پنجرههای تاریک (بدون دید) و در شکل نرم آن برای لباس، اثاثیه یا لوازم داخلی نظیر پرده، کفسازی و ساختن سقف، پوستهٔ کابلهای الکتریکی، توپهای بازی سبکوزن وجود دارد.
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Untimely ventricular contractions frequently bring about several or no signs and symptoms. But the additional beats may cause strange sensations in the upper body, such as:
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Emulsion Polymerization: In this process, vinyl chloride monomers are emulsified in water with the assistance pvc شبابيك of surfactants. The polymerization reaction is then initiated by free radicals.
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Main goal of the challenge would be to support the general public to find out some intriguing and essential information regarding chemical things and a lot of common components. We recognize that the fundamentals during the materials science will help men and women to be aware of lots of common issues.
PVC’s flexible Qualities have brought about its extensive use in several sectors. Some common applications contain: