همچنین محصولات فرعی وجود دارد که پروفیل‌های اکسترود شده بر پایهٔ پلی‌وینیل کلراید سخت (یو پی‌وی‌سی) با مقاومت ضربهٔ بالا و سطح خارجی سفید هستند و در ساخت در و پنجره‌هایی که در دیوارهٔ خارجی ساختمان به‌کار می‌روند، استفاده می‌گردند.
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در سال ۱۹۲۶ والدو سیمون از بی‌اف گودریچ روشی برای نرم کردن پی‌وی‌سی به‌وسیلهٔ مخلوط کردن آن با افزودنی‌های گوناگون گسترش داد. نتیجه ماده‌ای انعطاف‌پذیر بود که به سادگی در فرایندها شرکت می‌کرد و به سرعت در استفاده‌های تجاری شایع شد.
این صفحه آخرین‌بار در ۲۳ ژانویهٔ ۲۰۲۵ ساعت ۱۵:۳۹ ویرایش شده است.
The contents in the reaction vessel are pressurized and frequently mixed to maintain the suspension and make certain a uniform particle dimensions of your PVC resin. The reaction is exothermic and thus needs cooling. As the amount is lessened during the reaction (PVC is denser than VCM), water is constantly included into the mixture to maintain the suspension.[9]
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Untimely ventricular contractions generally bring about several or no signs or symptoms. But the additional beats can result in abnormal sensations inside the chest, for instance:
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Expanded PVC board is often utilized for upholstery bases on boats, supplying durability, waterproofing, and relieve of manipulation with normal woodworking resources. It is also well known for crafting custom made indicators and out of doors decor on account of its versatility in condition and dimensions. Go through Much more Upholstery Bases
همچنین ماده‌ایست که اغلب برای لوله‌کشی آب و فاضلاب به علت ارزان بودن طبیعی و انعطاف‌پذیر بودن استفاده می‌شود.
We provide custom-made CNC routing and laser engraving providers which means you can even structure the symptoms or content and organize for them to deliver the message you'd like. It might also simply be painted.
Premature ventricular contractions (PVCs) are added heartbeats that commence in one of many heart's two reduce pumping chambers (ventricles). These additional beats disrupt the regular coronary heart rhythm, in some cases producing a feeling of the fluttering or even a skipped defeat while in the chest.