UV-ljus och temperatur anses vara de faktorer som svarar för den huvudsakliga nedbrytningen vid utomhusåldring av plast. I likhet med andra plaster bryts PVC ned av solljus. Den fotokemiska nedbrytningen accelereras vid höjd temperatur.
مخلوطکنهای پودری: مخلوط کردن مواد مختلف توسط این مخلوطکنندهها انجام میگیرد. البته باید توجه کرد که در مخلوط کردن پایدارکنندهها، روانکنندهها، پیگمنتها و… که باید مقدار آنها نسبتاً کم باشد امکان ایجاد اشکالات عملی وجود دارد.
Vid temperaturer upp till 60°C är styv PVC resistent mot de flesta oorganiska vätskor inklusive moderat koncentrerade syror samt alkali och icke-oxiderande saltlösningar i alla koncentrationer.
Consider, PVC board isn't specifically potent By itself, so it will need a base or support method to avoid bending or breaking.
PVC was synthesized in 1872 by German chemist Eugen Baumann after extended investigation and experimentation.[12] The polymer appeared being a white stable inside of a flask of vinyl chloride that were remaining with a shelf sheltered from daylight for four weeks. In the early 20th century, the Russian chemist Ivan Ostromislensky and Fritz Klatte from the German chemical business Griesheim-Elektron the two attempted to work with PVC in business merchandise, but complications in processing the rigid, from time to time brittle polymer thwarted their endeavours.
Trying to find a realistic and flexible materials to work with on advancements and enhancements on your boat? You must take into account the expanded PVC sheet. » Go through Much more
PVC features a set of exclusive properties that lead to its wide selection of applications. One of several primary properties is its sturdiness and resistance to environmental stressors which include dampness, chemicals, and ultraviolet radiation.
در ژانویهٔ ۲۰۰۶ اتحادیهٔ اروپا یک تحریم برای ۶ نوع فتالیت نرمکننده در اسباببازیها قرار داد. در سال ۲۰۰۳ کمیسیون امنیتی محصولات مصرفی آمریکا عریضه برای تحریم مشابه در ایالات متحده را انکار کرد.
پیش از قرن بیستم شیمیدان روسی ایوان استرا میسلنسکی و فریتز کلیت از کمپانی گریشم الکترون شیمی آلمان هر دو تلاش کردند تا پیویسی را در محصولات تجاری بهکار گیرند اما مشکلات در فرایند، سختی و گاهی شکنندگی پلیمر تلاشهای آنها را بینتیجه میگذاشت.
Allt eftersom biltillverkarna har sökt efter lättare product har fler och fler detaljer i bilen blivit tillverkade i plast.
Expanded PVC board is often utilized for upholstery bases on boats, giving toughness, waterproofing, and simplicity of manipulation with normal woodworking resources. It's also preferred for crafting personalized indications and outdoor decor as a consequence of its flexibility in form and size. Browse More Upholstery Bases
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Packaging: PVC’s versatility and resistance to oil and grease help it become an excellent choice for foods packaging.
While PVC has a lot of helpful makes use of, Additionally, it has a significant environmental affect. The creation and disposal of PVC can result in the release of destructive chemicals into your natural environment. Also, on account of its sturdiness, PVC waste can persist during the setting for extended periods.