grafting reaction 中文意思是什麼
grafting reaction
解釋
接枝反應-
Water - borne epoxy resin has been synthesized by grafting route, epoxy resin, methacrylic acid, butyl acrylic as primal materials. the mechanism of the preparation, emulsification and curing of the resin were described, and the whole course was analyzed. the correlative factors on each step reaction were discussed in detail
探討了以環氧樹脂、甲基丙烯酸和丙烯酸丁酯為原料，由接枝的路線合成水可分散性環氧樹脂的制備、乳化及固化成膜一系列的反應機理，對過程進行了分析，並討論了有關因素對各步反應的影響。 -
Using the semi - batch synthesis techniques, a grafting reaction mechanism is adopted to prepare a core - shell composite latex of siloxane / acrylate based copolymer
利用接枝反應和種子溶脹半連續滴加技術合成了聚有機硅氧烷聚丙烯酸酯復合乳液。 -
With increasing the content of ydh151, the grafting degree increased and the grafting efficiency decreased. however, the content of dcp cannot be added too much so as to avoid the crosslinking reaction between ydh151 and hdpe
但是由於ydh151與hdpe也會發生交聯，所以dcp的量不能過多， ydh151的量也在低於10 %為宜， ydh151含量太多時接枝效率大幅度一卜降。 -
Preparation, structure and properties of hdpe ~ g ~ aa / mmt nanocomposites melt grafting reaction of hdpe with aa was performed in thermohaake rheomix and hdpe - g - aa with high grafting degree and high grafting efficiency was prepared. the change of torque indicated that the graft copolymerization was existed during melt compounding. the extent of grafting was analyzed by ftir and element analysis
在hdpe中只加過氧化二異丙苯（ dcp ）時，由於發生交聯反應而使平衡扭矩明顯增加，熔點和結晶度降低，加入aa后， aa與hdpe的接枝和hdpe自身的交聯並存，前者對後者有抑制作用，從而使扭矩下降，熔點和結晶度部分恢復。 -
This article confirmed the grafting efficiency of starch grafted to acrylic acid and the structure of starch and its grafted matter through the separation, purification and analysis tests to the grafted copolymer and the grafted forked - chain matter produced from the process of this reaction ; and deduced the formula of the velocity of such reaction mentioned above with a calculated result of the apparent activation energy in this reaction by the curve showing the relationship among the consistency of starch, monomer and initiator and the velocity of the grafting copolymerization
摘要對澱粉接枝丙烯酸所得接枝共聚物及接枝側鏈物進行分離提純和分析測試，確定了其接枝效率並表徵了澱粉及其接枝物的形態結構；通過分別測定接枝共聚反應速率與澱粉、單體、引發劑濃度的關系曲線，確定了該接枝共聚反應的速率關系式；推算出了反應的表觀活化能。 -
These data showed that the chimerism were specially tolerant to donor xenoantigens in skin grafting and mixed lymphocyte reaction ( mlr ) assays, however were still immunocompetent to mhc - disparate third party c57bl / 6 mouse. in the second experiment, mice of group b appeared with variant degree of wasting, diarrhea, fur losing, and all died within 15 days. pathologic changes of liver and intestine were inflamming cells infiltrating and necrotizing
肝、小腸切片均有明顯病理改變，主要表現為腸粘膜部分脫落、壞死和炎性細胞浸潤，肝實質內有灶性淋巴細胞及多形細胞浸潤，並可見局灶性壞死，兩者均符合gvhd病理改變。 -
The content of styrene was found to be dependent on the investigated grafting conditions, of which the dose rate and monomer concentration were the major conditions, and the dependence of the initial rate of grafting on the dose rate and the monomer concentration was found to be of 0. 4286 and 1. 1662 orders, respectively. the results indicate that the grafting reaction is competitive and the copolymerization and the graft - copolymerization are existing at the same time. the grafting proceeds by the so - called front mechanism in which the grafting starts at the surface of the films and moves toward the middle of the film by successive diffusion of the styrene through the grafted layers
我們對輻射接枝反應中的各個因素如：單體濃度、輻射劑量率、輻射劑量以及反應時間進行了研究分析，結果表明：單體濃度和劑量率是反應的兩個主要影響因素，它們對反應速率的影響指數分別為1 . 1662和0 . 4269 ；反應的動力學方程為： rg k [ d ] ~ （ 0 . 4269 ） [ m ] ~ （ 1 . 1662 ） ；認為接枝反應是一競爭反應，單體的均聚反應和在聚合物上的接枝反應同時存在，單體濃度的高低決定著競爭反應的方向；輻射接枝反應是從聚合物表面開始的，隨著溶劑的溶脹和單體的擴散最後在整個膜體中形成接枝產物。 -
The extent of grafting was analyzed by ftir and element analysis and thermal properties of hdpe - g - ydh151 were studied by dsc measurement. when adding dcp to hdpe, the melting temperature and the degree of crystallization of the matrix decreased because of the crosslinking reaction of hdpe
而且mmt的加入，降低了hdpe - g - aa的熔融溫度和結晶度，這主要是因為剝離后的mmt在一定范圍內限制了pe鏈的運動，從而降低了基體的結晶能力。 -
These changes may be attributed to the competition between the grafting of ydh151 and hdpe and the self - crosslinking of hdpe, and the grafting resisted the crosslinking reaction. furthermore the addition of liquid ydh151 decreased the maximal torque
加入ydh151后， ydh151與hdpe的接枝、交聯和hdpe自身的交聯並存，接枝對交聯有抑制作用，從而使扭矩下降，熔點和結品度部分恢復。 -
In comparison, the addition of mmt to hdpe did not affect the crystallization behavior of the later. 2. preparation, structure and properties of hdpe - g - ydh151 / mmt nanocomposites melt grafting reaction of hdpe with ydh151 was performed in thermohaake rheomix and the melt grafting procession was studied
兩種復合材料在力學性能上存在較大差異，對于hdpe - g - aa mmt ，隨著mmt含量的增加，拉伸強度和楊氏模量都有所增加，而對于hdpe mmt卻降低。
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