Various ongoing experiments have expanded this chemistry, generally through the chemical modifications of this polymeric material. The chemical modification of PVC using several products being an Lively modifying agent is described in this function. The latter comprised grafting polymerizations, nucleophilic radicals, substitutions, PVC modifications, and removal or dehydrochlorination. This viewpoint addresses the key PVC reactivity tendencies and supplies an summary of PVC functionalization though inspecting the environmental implications of PVC via the prism of chemical recycling. Through comprehensive ongoing investigation, this chemistry has been expanded, mainly with the chemical adjustments of this polymeric material. To enhance its Photograph-balance Homes, increase the programs of poly(vinyl chloride) (PVC), and examine PVC-connected phenomena, quite a few chemical modifications are already launched to PVC.
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。
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.
قالب‌گیری به روش تزریقی، اکستروژن و شکل‌دادن حرارتی نیز از روش‌های دیگر هستند.
The contents of the reaction vessel are pressurized and constantly blended to take care of the suspension and make sure a uniform particle measurement on the PVC resin. The response is exothermic and so calls for cooling. As the quantity is lessened during the reaction (PVC is denser than VCM), drinking water is continuously included to the mixture to keep up the suspension.[nine]
شکل‌دادن در فشار کم: قالب‌گیری به‌وسیله فشار و انژکسیون بسیار سریع و برای تهیه اشیا قالب‌گیری شده با ابعاد کم و متوسط به کار می‌رود.
問い合わせが多い工場の秘密！他社と差をつける営業テクニックやよくあるミスとは
This makes it really effortless to handle and operate with. So, even if You aren't the strongest individual, you gained’t find it also tricky to transfer it all-around when producing advancements in your boat.
Join absolutely free and stay current on exploration progress, health suggestions, existing overall health matters, and abilities on running health. Click here for an email preview.
با وجود این در آمریکا بیشتر کمپانی‌ها به‌طور اختیاری اسباب‌بازی‌های ساخته شده با پی‌وی‌سی برای نوزادان شيش حصير را متوقف کردند.
Among the list of to start with stuff you will recognize with regards to the marine PVC board that We now have in stock right here at Boat Outfitters is the fact that it truly is exceptionally lightweight.
همچنین ماده‌ایست که اغلب برای لوله‌کشی آب و فاضلاب به علت ارزان بودن طبیعی و انعطاف‌پذیر بودن استفاده می‌شود.
PVC tillverkas genom kedjepolymerisation av vinylkloridmolekyler och kan efter användningsområden indelas i Tv setå previous:
The carbon-chlorine bonds inside the vinyl chloride units give PVC its distinct properties, which include resistance to environmental things and electrical insulation.