查询词典 methacrylic

The amphiphilic copolymer poly (MAA-SMA-PEGMA) was synthesized by the conventional free-radical copolymerization of methacrylic acid, stearyl acryate and poly methacrylate monomers.

利用功能性单体甲基丙烯酸、甲基丙烯酸十八烷基酯和聚乙二醇甲基丙烯酸酯通过常规自由基无规共聚反应，合成了两亲性共聚物Poly(MAA-SMA-PEGMA)。

A photosensitive resin for UV curing acrylic powder coating has been synthesized by esterification of methacrylic acid and GMA-type acrylic resin at the presence of ethyl acetate as solvent, tetramethylammonium chloride as catalyst, YK as inhibitor.

以醋酸丁酯为溶剂，四甲基氯化铵为催化剂，氮氧自由基为阻聚剂，由甲基丙烯酸缩水甘油酯类丙烯酸树脂与甲基丙烯酸酯化反应制得了UV固化粉末涂料用感光性丙烯酸树脂。

A series of UV curable waterborne hyperbranched polyester s with different acid/amine terminal rate,which contained -OH?-COOH and methacrylic chain end groups,and were partly neutralized with thertiary amine,were synthesized from trimellitic anhydride,epichlorohydrin,glycidyl methacrylate and triethylamine.

以偏苯三酸酐、环氧氯丙烷、甲基丙烯酸缩水甘油酯、三乙胺合成了末端羧基与氨基不同比例的一系列可UV固化的高支化聚酯，研究了末端官能团对合成产物水溶性、粘度以及凝胶转化率的影响。

The macromer, methoxy polyethylene glycol methacrylate, used for polycarboxylate based superplasticizer was prepared by esterification of methacrylic acid and methoxy polyethylene glycol.

以聚乙二醇单甲醚和甲基丙烯酸为主要原料，通过酯化反应制备聚羧酸系减水剂大单体聚乙二醇单甲醚甲基丙烯酸酯。

The PS-b-PNIPAM-b-PDMA and PS-b-PDMA-b- PNIPAM triblock copolymers can self-assemble into PS-core micelles, which possess a three layer \'onion-like\' structure, with PDMA and PNIPAM blocks forming the inner layers or outer coronas. Using above measurements, we can concluded that PS-b-PNIPAM-b-PDMA triblock copolymer micelles have the double phase transition behavior, while PS-b-PDMA-b-PNIPAM have only one phase transition behavior.2. We synthesized poly(ethylene glycol-b-methacrylic acid)diblock copolymers with three different polymerization degree of PMAA blocks.

但是对于PS-b-PDMA-b-PNIPAM胶束，由于中间亲水嵌段的作用，使PNIPAM的相转变温度提高，且PDMA由于靠近PS内核以及随着外壳PNIPAM的水溶性变差其相转变点降低，因此我们只能看到一个转变过程。2、通过原子转移自由基聚合，我们合成了三种不同PtBMA长度的PEG-b-PtBMA二嵌段聚合物，将叔丁基水解后得到了三种PEG-b-PMAA二嵌段聚合物。

UV curing powder coatings ; acrylic resin ; methacrylic acid ; glycidyl methacrylate ; photosensitive resin

UV固化粉末涂料；丙烯酸树脂；甲基丙烯酸；甲基丙烯酸缩水甘油酯；感光树脂

Such raw materials as waste polyethylent cable particles, pure polyvinyl chloride powder, wood powder, a metallic soap stabilizer, a coupling agent, chlorinated polyethylene and methacrylic acid polyesters and a lubricator are added into and mixed in a high speed mixer according to the formula, and the mixing temperature is 100 to 110 DEG C, the mixing time is 20 to 35 min; the well mixed material is added into an extruder for extrusion, the rotating speed of the mainframe of the extruder is 40 to 60r/min, the rotating speed of a feeding machine is 4 to 6r/min, and the materials are shaped after being extruded.

将废旧聚氯乙烯电缆颗粒、纯聚氯乙烯粉、木粉、金属皂类稳定剂、偶联剂、氯化聚乙烯、甲基丙烯酸多元酯、润滑剂按照配方配制的原料加入高混机中混合，混合温度为100℃～110℃，混合时间为20～35分钟；将混合好的原料加入挤出机中进行挤出，挤出机主机转速为：40～60转/分钟，喂料机转速为：4～6转/分钟；挤出后进行定型。

MaterialsMethylmethacrylate, ethyl acrylate, acrylic acid and methacrylic acid (all A.R. grades, FirstChemical Reagent Factory, Tianjin, China) were puried bydistillation under reduced pressure and kept in therefrigerator.

物料甲基丙烯酸甲酯，丙烯酸乙酯，丙烯酸和甲基丙烯酸（所有机场铁路等级，第一化工试剂厂，天津，中国）的纯化减压蒸馏和留在refrigerator。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。