What Does pvc Mean?
What Does pvc Mean?
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در هر دو موقعیت پلیمر زمانی آشکار شد که جامد سفید رنگ داخل فلاسک وینیل کلراید در معرض نور آفتاب قرار گرفت.
کلندرها: جهت تهیهٔ ورقه‌های طویل از کائوچو و ترموپلاستیک‌ها رزین نرم شده را بین دو یا چند سیلندر عبور می‌دهند.
Occasional untimely ventricular contractions in men and women with no heart problems normally aren't a priority and sure You should not need to have therapy. You may perhaps want procedure In case the premature ventricular contractions are really Repeated or bothersome, or When you have an fundamental heart ailment.
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An additional hugely advantageous property in the marine PVC foam board we supply right here at Boat Outfitters is the fact that it’s water and weatherproof.
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聚氯乙烯可由乙烯、氯和催化劑經取代反應製成。由於其防火耐熱作用，聚氯乙烯被廣泛用於各行各業各式各樣產品：
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 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 شيش حصير را دچار مشکل کند.
Versatile PVC is usually Employed in building as insulation on electrical wires or in flooring for households, hospitals, schools, along with other regions where by a sterile environment is critical. Rigid PVC can be Employed in design as pipe for plumbing and siding that is often named
Pure polyvinyl chloride can be a white, brittle reliable normally sent as powder or pellets. It really is insoluble in Liquor but a bit soluble in tetrahydrofuran.
Emulsion Polymerization: In this method, vinyl chloride monomers are emulsified in h2o with the assistance of surfactants. The polymerization response is then initiated by totally free radicals.
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モノマーである塩化ビニル（クロロエチレン）を、繰り返し結合したものをポリ塩化ビニルと呼びます。
Electronics: Owing to its outstanding insulation Qualities, PVC is often used in insulation for electrical wires and cables.