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Introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin and use it as a link stuff to prepare flexible relief block printing ink.

叙述了丙烯酸、丙烯酸脂、苯乙烯四元共聚合成醇溶性聚丙烯酸脂类方法,并以其为连结料制备柔性凸版油墨。

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Results indicate interestingly that the double bond of GMA polymerized with polystyryl carbanion and the molar ratio of epoxy end group and polystyrene oligomer can be adjusted.

在GMA与聚苯乙烯阴离子反应过程中,GMA在活性种发生了聚合,所得产物中环氧基与聚合产物摩尔比可根据需要进行调节。

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The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes.

芳基甲烷在有机溶剂介中、碱催化下氧化缩合反应,是合成二苯乙烯(烷)类化合物重要途径.

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The benzene ring and alkene structural group are much more stable than structural group of sulfoacid for the carbonifying process of polystyrene.

在碳化过程中,聚苯乙烯阳离子苯环结构和烯烃基团比磺酸基团稳定。

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In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst.

本文利用三氯化铝作催化剂,废聚苯乙烯与溴发生亲电取代反应合成溴化聚苯乙烯阻燃剂。

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The method of liquid phase rearrangement of styrene oxide to phenylacetaldehyde catalyzed by SAStype solid acids and molecular sieves was studied.

研究了SAS型固体酸和几种分子筛上氧化苯乙烯液相重排成苯乙醛反应,考察了催化剂活性、选择性和和稳定性。

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Several chiral aryl diphosphite ligands derived from pyranoside backbones of glucose and galactose were applied in Rh-catalyzed asymmetric hydroformylation of styrene.

合成了四个从葡萄糖及半乳糖衍生手性芳基双膦配体,制备了手性双膦-铑(Ⅰ)配合物催化剂,并将其用于苯乙烯不对称氢甲酰化反应中。

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Objective:To study the preparation of compound of Ion-exchange resins-Domiphen and the measure of max attach to resin.

制备苯乙烯系强酸型阳离子脂度米芬复合物,并测定度米芬最大吸附量。

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Porous ceramic materials on the base of strontium zirconate were developed with zirconium dioxide,baddeleyite powder,and granular polysterol.

采用二氧化锆、斜锆矿粉、碳酸锶及粒状聚苯乙烯制成了锆酸锶多孔陶瓷材料。

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The acrylonitrile-styrol reisn is firmly combined on active carbon, thus being safe and nontoxic to the environment.

丙烯腈-苯乙烯脂和铜离子牢固结合在活性炭上,对环境安全无毒。

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Preparation of microencapsulated osmium tetraoxide from GPPS was reported,and effect of solvent,temperature and dispersant was analyzed.

采用通用聚苯乙烯(GPPS)制备了四氧化锇微胶囊。

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Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.

本文研究从荆芥穗中提取回收聚苯乙烯所需柠檬烯,其方法是溶剂萃取。

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The reaction between polystyrene having oxazoline groups(RPS) and chlorinated polyethylene(CPE) was investigated by FTIR, DSC methods.

用FTIR、DSC等方法研究了含恶唑啉官能团苯乙烯(RPS)与氯化聚乙烯(CPE)之间反应。

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Being a bivinyl crosslinker,3 could be copolymerized with styrene giving gel-type resin with superior swelling characteristics.

用此方法合成标题化合物作联剂与苯乙烯聚合,可得到具有特殊溶胀性能苯乙烯脂。

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PBS英语讯息

The styrene gas left dozens unconscious in the street.

在大街上,气体让大量居民失去意识。

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剑桥雅思听全真试 5

The Save-a-Cup scheme was set up by the vending and plastics industries to recycle as many as possible of the three-and-a-half billion polystyrene cups used each year.

“节省子”计划通过兜售和塑料业每年尽可能多地回收35亿聚而成立。

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Vox 观点

And they were still in everything from refrigerators and air conditioners and styrofoam.

它们仍然存在于冰箱、空调和聚泡沫塑料等各种物品

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科普小杂文

It was made from polystyrene which was strong, cheap and transparent, allowing the ink level to be seen at all times.

它由聚制成,坚固、廉价、透明,可以随时看到墨水量。

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当月 CNN 10 学生英语 2020年10月合集

But then it was discovered in 2015 that these little grubs could eat polystyrene and a whole new line of research opened up.

但是在2015年,人们发现这些小东西可以吃聚,于是一个全新的研究方向就出现了。

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雅思听最新机试真

At the moment, 500 million poly cups are collected, processed and sold on to other businesses, such as Waterford, which turns the cups into pencils.

目前,5 亿个聚被收集、加工并出售给其他企业,如 Waterford,该公司将子转变为铅笔。

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华盛顿邮报

Because, yes, this sounds very concerning, but, on the other hand, I think about how, like — I don't know — in the '80s and '90s, having Styrofoam was just very normal and that people weren't really even worried about plastics.

因为,是的,这听起来非常令人担忧,但是,另一方面,我想到了,就像——我不知道——在 80 年代和 90 年代,使用聚泡沫塑料是非常正常的,人们甚至都不担心塑料

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高级英语短文

It's unlikely to be the plastic itself: LEGO typically uses acrylonitrile butadiene styrene, or ABS, plastic—a highly durable polymer that keeps the pieces strong for building, or what LEGO calls " clutch power."

这不太可能是塑料本身的:乐高通常使用丙腈-丁二-(ABS)塑料,这是一种高度耐用的聚合物,能够保持积木的强度,并提供乐高所谓的“咬合”。

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Scishow 精选系列

While it can technically be recycled, it's not particularly practical, because a truck full of lightweight, air-filled Styrofoam doesn't melt down into a lot of polystyrene.

尽管从技术角度能被回收,但是不是特别实用,因为一卡车又轻又蓬松的泡沫塑料并不能够熔化成大量的聚

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VOA视频精选

It’s collecting all sorts from sort of tiny bits, plastic needles and bits of polystyrene, all the way up to bits of broken bucking plastic bottle as well.”

它收集各种各种各样的东西,从细小的塑料碎片、聚碎片和各种各样碎掉的塑料瓶。

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BBC 听 2023年9月合集

There are also new bans in parts of the country on polystyrene packaging and microbeads that are found in personal care and cleaning products.

澳大利亚部分地区还出台了新的禁令,禁止聚包装,以及在个人护理和清洁产品存在的塑料微球。

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BBC英语大破解

We see the usual suspects of plastic lids from bottles, cups, fragments of food containers, a lot of tiny little pieces of Styrofoam.

这里有我们经常看到的塑料垃圾 —— 瓶盖、盖,食品包装容器的碎片,还有很多小的聚泡沫塑料颗粒。

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经济学人-文艺

Tastes have evolved: polystyrene cups have long replaced elegant coffee sets in many situations.

子在许多情况下早已取代了优雅的咖啡具。

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BBC Ideas 精选(双语)

Now it's mainly plain paper and polystyrene, but the skillful wrapping and excitement of unwrapping remains.

现在主要的包装材料是普通纸张和聚,但巧妙的包装和拆开包装时的兴奋感仍然存在。

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PBS趣味科普

You can also look for special recycling drop-off locations for odd items like batteries or styrofoam.

你也可以为电池或泡沫聚等奇怪的物品寻找特殊的回收地点。

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PBS趣味科普

Maybe you're imagining a big island of packaging, and styrofoam coolers, and fishing gear.

也许你在想象一个巨大的包装岛,上面满是泡沫聚冷却器和渔具。

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TED演讲(视频版) 2017年3月合集

Well, those Styrofoam coffee cups are sure going to add up.

那些聚泡沫塑料咖啡肯定会加起来。

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TED演讲(视频版) 2022年7月合集

Polystyrene ceiling tiles, no natural daylight, the least inspiring place to meet people.

天花板,没有自然采光,是最不鼓舞人心的会面场所。

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TED演讲(视频版) 2019年11月合集

Now, if you're wondering about that polystyrene clamshell, yeah, we ditched it.

现在,如果您想知道那个聚翻盖,是的,我们抛弃了它。

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现代生活奇思

A phone case and some polystyrene balls.

一个手机壳和一些聚球。

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