查询词典 grafted

When the concentration of MAH is higher than that of St, some MAH monomer reacts with St to form SMA, others can directly grafts onto PP macroradicals. When the amount of St added is higher than that of MAH, part of St monomer may preferentially react with PP macroradicals to form more stable styryl macroradicals, while others copolymerize with MAH, yielding SMA. MFR of the grafted PP is lower in this case. It is considered that MFR of the grafted PP is decided by concentration of free monomers, or, number of grafting reactive species. FTIR analysis confirmed the above mechanism.

当MAH单体用量多于St单体时，一部分MAH单体与St反应生成SMA，另一部分可直接与PP大分子自由基进行接枝反应；当St单体用量多于MAH单体时，除与MAH反应生成SMA之外的St单体可先与PP大分子自由基反应，并起到稳定PP自由基的作用，这时接枝物的MFR较小，亦即接枝物的MFR与体系中可进行接枝反应的活性种数目有关。

In this paper, grafting of crotonic acid, undecylenic acid, oleic acid, and acrylic acid onto acrylonitrile-butadiene-styrene terpolymer were studied. Experimental factors influencing grafting, kinetics and mechanism of grafting, the reactivity of grafted polymer, and the compatibilization effects of grafted ABS on ABS blends were investigated.

本文主要研究反式丁烯酸、10-十一烯酸、油酸、丙烯酸接枝ABS树脂的影响因素、接枝反应机理和动力学、接枝物的反应活性，以及接枝物对ABS共混物的增容作用。

The nylon was activated with organic functional groups,and after that reacted with high-molecular-weight polyethyleniminein the organic soleent. PEI was grafted covalently on the surface of nylon. The PEI grafted on the surface of nylon was modified by the alkyl halide such as bromohexane and iodomethane,to give high-molecular-weight antimicrobial quaternary ammonium salts.

摘 要：尼龙6用4-溴丁酰氯活化，再与高分子聚乙烯亚胺在有机溶剂中进行反应，使PEI共价接枝在载体上，然后用卤代烷对接枝在尼龙6上的PEI进行烷基化反应，使其形成具有杀菌功能的高分子季铵盐，制备出尼龙树脂固定化的高分子抗菌杀生剂。

Grafted PHB was characterized by means of chemical titration and 〓C NMR, and the results proved that MA group was successfully grafted onto the methine carbon of PHB chains.

采用对酸酐基团进行化学滴定和〓C NMR方法对接枝产物的接枝率和结构进行了表征。

It can supply with a good basis for getting polys crosslinked,grafted and other special polymers with various structures and function by changing crosslinked density and grafted density through binary copolymerization or trimerization.

而且通过二元或三元聚合，来改变交联点和接枝点的密度，为进一步得到结构更加多样化与性能各异的聚芳醚的交联聚合物、接枝聚合物及其它特种高分子材料，提供一个良好的基础。

The reactivity of dodecylamine, GMA and 2-ethyl-2-oxazoline reacting with grafted ABS is: GMA-ethyl-2-oxazolinedodecylamine. The reactivity of grafted polymer is: ABS-g-acrylic acid Melt grafting of undecylenic acid onto ABS was carried out in a Haake Rheocord RC90 mixer using dicumyl peroxide as initiator.

将ABS接枝物与聚酰胺熔融共混，共混物的粘度和扫描电镜结果表明接枝物的反应活性顺序为：ABS-g-丙烯酸以DCP为引发剂，在HAAKE流变仪的密炼机中能成功进行10-十一烯酸熔融接枝ABS树脂。

The macromer cationically copolymerized with tetrahydrofuran to give a copolyether grafted with PEG chain. Using copolyether with about 1.3grafts per molecule, the S-PEU with PEG grafted onto soft segments was synthesized.

以四氢呋喃与少量大分子单体进行正离子开环共聚合制得每个链接有约1.3个PEG枝的聚丁二醇，用以合成了在软链段上接有PEG枝的聚醚氨酯。

Methods The split thickness skin grafts were harvested from avulsed skin by using dermatone of drum type, and the mesh flaps were back grafted for 92 cases with skin avulsion, and 147 cases were treated with back grafted of full-thickness skin grafts.

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Methods The split thickness skin grafts were harvested from avulsed skin by using dermatone of drum type, and the mesh flaps were back grafted for 92 cases with skin avulsion, and 147 cases were treated with back grafted of full-thickness skin grafts.

应用鼓式取皮机反取中厚皮回植治疗92例，反取全厚皮回植治疗147例，对两组病例的回植成活情况进

Methods The split thickness skin grafts were harvested from avulsed skin by using dermatone of drum type, and the mesh flaps were back grafted for 92 cases with skin avulsion, and 147 cases were treated with back grafted of full-thickness skin grafts.

应用鼓式取皮机反取中厚皮回植治疗92例，反取全厚皮回植治疗147例，对两组病例的回植成活情况进行对照研究。结果在撕脱面积不大时两组间成功率差异不明显，在撕脱皮肤面积较大时，反取中厚皮回植组成功

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。