来自专业的译者、企业、网页和免费的翻译库。
among the problems mentioned were the large volumes of debris from destroyed buildings and the disposal at sea of bottles containing polyethylene terephthalate (pet) and plastic bags used to store water and other products in hurricane preparation periods.
ومن بين المشاكل المذكورة، الكميات الكبيرة لحطام المباني المهدمة، والتخلص من القوارير المصنوعة من مادة بولي ايثيلين تيريفثاليت (pet) والأكياس البلاستيكية المستخدمة لتخزين المياه وغيرها من المنتجات في فترات التأهب لمواجهة الأعاصير، بإلقائها في البحر.
2. after linear polymers such as poly(vinyl chloride), polyethylene, styrene butadiene rubber, acrylonitrile butadiene rubber, etc., are added to a mixture composed of plasticizer and vinyl monomers such as styrene and divinylbenzene, chloromethylstyrene and divinylbenzene, vinylpyridines and divinylbenzene, etc., to obtain a pasty mixture, the mixture is coated on a backing fabric (cloth or net) and covered with a separating film such as poly(vinyl alcohol), polyethylene terephthalate, etc., on both sides. the composite is then heated to produce a plastisol and to copolymerize the vinyl monomers. the film obtained is reacted with reagents to introduce ion exchange groups. an alternative method of this type involves polymerizing a mixture of vinyl monomers, peroxide and additives, or a mixture of vinyl monomers, peroxide, additives and linear polymers on a reinforcing fabric between two glass plates or between plastic films which are rolled. most commercial hydrocarbon type ion exchange membranes are manufactured by this method. the obtained ion exchange membranes show excellent electrochemical properties, sufficient mechanical strength and are easy to manufacture in large volume. figure 1 shows an example of a schematic diagram of the preparation method for a precursor membrane (mizutani et al. 1963, 1965)
query length limit excedeed. max allowed query : 500 chars
最后更新： 2018-10-16
使用频率： 1
质量：
参考：