Not known Details About pvc
Not known Details About pvc
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ここでは塩ビの加工方法として代表的なものである、押出成形・カレンダー成形・射出成形・熱成形・ディッピング加工・コーティング加工を解説します。
Occasional untimely ventricular contractions in men and women with out heart problems typically are not a concern and sure Do not require treatment. You might need cure In the event the untimely ventricular contractions are quite frequent or bothersome, or Should you have an underlying heart affliction.
The polymers are linear and they are powerful. The monomers are largely organized head-to-tail, which means that chloride is found on alternating carbon centres. PVC has generally an atactic stereochemistry, which means the relative stereochemistry on the chloride centres are random. Some degree of syndiotacticity in the chain presents a few % crystallinity that is definitely influential on the Qualities of the fabric.
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.
پلی‌وینیل کلراید به‌طور اتفاقی در دو موقعیت کوچک در قرن ۱۹ کشف شد. نخستین بار در سال ۱۸۳۵ به‌وسیله هنری ویکتور رگنالت و در ۱۸۷۲ به‌وسیله اوگن بومان.
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Adaptable PVC is commonly Utilized in building as insulation on electrical wires or in flooring for properties, hospitals, universities, and other places wherever a sterile ecosystem is necessary. Rigid PVC is additionally Utilized in development as pipe for plumbing and siding that is often called
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Major reason of the project is always to support the general public to learn some fascinating and crucial information regarding chemical features and many typical components. We recognize that the basic principles in the supplies science might help men and women to be aware of lots of common issues.
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