欧美色亚洲色,天堂A∨在线A,天堂国产成人综合亚洲,伊人成人视屏

你好,歡迎訪問(wèn)濟(jì)南金昊化工有限公司!

專注品質(zhì),信賴服務(wù)

我們用心做產(chǎn)品服務(wù)

咨詢熱線:

13655318786

常見(jiàn)問(wèn)題

您現(xiàn)在的位置: 網(wǎng)站首頁(yè)>>新聞中心>>常見(jiàn)問(wèn)題馬來(lái)酸酐接枝原理與特性

馬來(lái)酸酐接枝原理與特性

來(lái)源:http://m.m9660.cn/ 日期:2022-11-03 發(fā)布人: 瀏覽次數(shù):0
不同于物理共混增韌,馬來(lái)酸酐接枝物兼具極性基團(tuán)醛基和烯烴非極性鏈段,能夠通過(guò)與聚合物、填料之間的化學(xué)鍵合,很好地實(shí)現(xiàn)強(qiáng)度和韌性的結(jié)合,具有廣闊的應(yīng)用前景。
Different from physical blending toughening, maleic anhydride graft copolymer has both polar group aldehyde group and olefin non-polar chain segment. It can achieve the combination of strength and toughness through chemical bonding with polymer and filler, and has broad application prospects.
概述
summary
馬來(lái)酸酐接枝物是一種以馬來(lái)酸酐為單體,在合適的溫度條件下與其他材料進(jìn)行接枝而得到的聚合物。通常,接枝方法主要有溶液法、熔融法、輻射法和固相法等。其中,熔融法是非常常用也是非常重要的方法。
Maleic anhydride graft copolymer is a kind of polymer which is obtained by grafting maleic anhydride as monomer with other materials under appropriate temperature conditions. Generally, grafting methods mainly include solution method, melting method, radiation method and solid phase method. Among them, melting is a very common and important method.
由于兼具馬來(lái)酸酐提供的極性基團(tuán)醛基和烯烴非極性鏈段,馬來(lái)酸酐接枝物可被廣泛應(yīng)用于PA、PP和PE等材料的改性,電線電纜母料,木塑行業(yè),包膠TPE以及熱熔膠等行業(yè),主要起偶聯(lián)相容的作用。
Because it has both the polar group aldehyde group and the olefin non-polar chain segment provided by maleic anhydride, maleic anhydride graft copolymer can be widely used in the modification of PA, PP, PE and other materials, wire and cable masterbatch, wood plastic industry, rubber coated TPE, hot melt adhesive and other industries, mainly playing the role of coupling and compatibility.
作用原理
Principle of action
在馬來(lái)酸酐接枝物中,酸酐基團(tuán)在高溫和螺桿剪切的作用下,能夠與極性基團(tuán)(-NH2、-OH)發(fā)生廣義的脫水反應(yīng)并形成化學(xué)鍵,從而將不相容的極性和非極性物質(zhì)進(jìn)行化學(xué)偶聯(lián)。
In the maleic anhydride graft copolymer, under the action of high temperature and screw shearing, the anhydride group can undergo a generalized dehydration reaction with polar groups (- NH2, - OH) and form chemical bonds, so that incompatible polar and non-polar substances can be chemically coupled.
以馬來(lái)酸酐接枝物增韌PA為例。PA具有優(yōu)異的力學(xué)性能,但低溫下的韌性差,而烯烴具有良好的加工和低溫韌性。然而,由于PA屬于極性聚合物,烯烴屬于非 極性聚合物,兩者之間很難相容。此時(shí),若采用馬來(lái)酸酐接枝物,則能很好地實(shí)現(xiàn)兩者的結(jié)合。在用于其他用途時(shí),馬來(lái)酸酐接枝物的作用 原理也類似。
Take maleic anhydride graft copolymer toughening PA as an example. PA has excellent mechanical properties, but its toughness at low temperature is poor, while olefins have good processing and low-temperature toughness. However, because PA belongs to polar polymer and olefin belongs to non-polar polymer, it is difficult to be compatible between them. At this time, if maleic anhydride graft copolymer is used, the combination of the two can be well realized (the reaction principle is shown in the figure). In other applications, the principle of maleic anhydride graft copolymer is similar.

相關(guān)新聞
丰满少妇一区二区熟女| 亚洲国产午夜电影在线入口观看| 男人的天AV免费| 国产香火久久久久久久 | 欧美精品有限| 蜜月二区在线| 大黑屄狠夹大黑屌| 一区二区亚洲欧美| 日韩 中文 91| 亚洲欧美在线色欲黑料| 91成人视频高清| 99人妻人人澡人人爽| 免费黃色三級片| 国产欧美激情第二页| 国产精品点击查看| 欧美自拍偷拍第一区| 91久久中文字幕| 肛交黄色免费看| 日逼视频免费网站| 成人电影二区| 色欲av地址| 成人91AV直播| 91黄色成人美国| 女人日逼网站| 欧美-区二区不卡免费视频| 日韩福利视频在线免费观看| 精品一区二区se| 7m凹凸视频大香蕉| 亚洲vs天堂vs成人vs无码| 久久精品视频女同| 国产AV一级网站| a久久天堂国产毛片精品| 亚洲 交 一区 处女| 成人99网| 一区二区 日本熟女| 操大骚逼逼逼网| 欧美国产视频一区二区| 亚洲色吧综合视频| 久久日韩人q| 美性色色就是干国产在线| 2024年久久亚洲精品视频|