室温

Two series of polyurethane acrylate grafted acrylic resins (Acr-g-TPU-PETA and Acr-gPPU-PETA) self-emulsifying systems are obtained by grafting -NCO group modified polyurethane acrylates with acrylic copolymer prepared from n-butyl acrylate, styrene,βhydroxyethyl methacrylate and acrylic acid The self-emulsifying systems showed Newtonian fluidity with viscosity closed to that of water, the solid contents were around 30% The T〓 of 15～4℃ for dried film before photocuring favored film formation at room temperature DSC and DMA results showed that PU-PETA is compatible with acrylic resin in the grafted resin The TG and dTG curves for Acr-g-PU-PETA samples were substantially different from the corresponding blends, and the brodened dTG peaks for photocured grafted resin suggest that there might be multiple interactions among chain segments The photocued film of the grafted resins self-emulsifying system exhibited good overall properties with polyurethane acrylate grafts ranging from 30% to 50%, and Acr-g-TPU-PETA series showed better properties than Acr-gPPU-PETA series The adhesion of the photocured film was 1～2 grade, impact strength was 50kg-cm and flexibility was 1mm The Shore hardness and the adhesion of the film decreased markedly if PETA was replaced by HEMA as photoactive group due to the lower C=C double bond content in the grafted resin The polyhydroxy amine-linked thioxanthones photoinitiators can be evenly dispersed in self-emulsifying system without color spot appearing in the dried film The films photocured with IV〓～IV〓 generally exhibited higher Shore hardness, gloss and solventresistance than that cured with Irgacure 2959 and did not induce the rusting of the iron substrate Pigmenting with titanium oxide had no effect on the photocuring The polyhydroxy amine-linked thioxanthone IV〓 and IV〓 can be new candidates for the formulation of titanium oxide pigmented photocurable water-borne coatings for their pale-yellow appearance and slight interference with the color of the coatings WB 4759 with high water-solubility coalesced and separated from the dried resin film, and even induced the rusting of iron substrate.

以丙烯酸丁酯，甲基丙烯酸-β-羟乙酯，丙烯酸及苯乙烯合成厂丙烯酸共聚树脂，并与含-NCO端基的聚氨酯丙烯酸酯接枝反应，经水性化后，得到两个系列（Acr-g-TPU-PETA和Acr-g-PPU-PETA）各5个不同配比的丙烯酸树脂接枝聚氨酯丙烯酸酯自乳化体系，粘度与水相近，为牛顿流体，固含量30％左右。光固化前干燥涂膜的玻璃化转变温度在-15℃～4℃之间，有利于室温下成膜。DSC及DMA谱表明两种树脂基本相容。Acr-g-PU-PETA的热失重行为明显不同于共混材料，接枝样dTG峰明显宽化，表明接枝样中链段之间的相互作刚有多重性，丙烯酸树脂与聚氨酯之间有一定的相容性。接枝树脂自乳化体系光固化涂层的综合性能以聚氨酯丙烯酸酯成分为50％～30％者相对较好，且以Acr-g-TPU-PETA系列更理想。光固化膜的附着力为1～2级，冲击强度为50kg·cm，柔软性多为1mm。以HEMA代替PETA作为接枝树脂的活性基团，碳—碳双键密度太低，光固化膜交联点太少，硬度和附着力均较差。多羟基胺连硫杂蒽酮光引发剂能均匀分散于树脂自乳化体系和接枝树脂干膜中，不出现色斑，光固化膜肖氏硬度一般高于以Irgacure 2959为光引发剂的光固化膜，光泽度及耐丁酮溶剂性能均有所提高，不会诱导铁基生锈，钛白着色对光固化结果几乎没有影响。本论文所合成的多羟基胺连硫杂蒽酮光引发剂IV〓与IV〓为浅黄色，对光固化涂层的颜色干扰较小，为配制钛白着色光固化水性涂料提供了新的光引发剂。水溶性太强的WB 4759在干膜中易聚结析出，且对所附着的铁基有诱导锈蚀作用。

It was found that the effective poled region is located at several microns under surface of anode and the SHG have good durability at room temperature.

玻璃的二阶非线性光学效应在室温下是稳定的。

ZnS thin films are deposited on porous silicon substrates with different porosities by pulsed laser deposition.

用脉冲激光沉积法在不同孔隙率的多孔硅衬底上生长了ZnS薄膜，并在室温下测量了样品的光致发光谱。

The polymerization of monomer procreated easily in the presence of silver nitrate and the monomer conversion increased with silver nitrate increasing below its critical concentration.

这种双原位合成技术能够在室温常压下实施，银离子的还原和单体的聚合同时发生，相对简单、省时，有望用于制备其它不同尺寸和组成的无机/聚合物纳米复合材料。

The insolubles can be redissolved at ambient temperatures,then the product be used by shake .

建议在0-10℃密封保存，使用时升到室温，不溶物会大部分溶解后再摇匀使用。

Compared with conventional preservation methods of red blood cells,lyophilization has many advantages such as less weight,convenient transportation,room temperature preservation,prone to be rehydrated.

相对于常规保存方法而言，冰冻干燥具有以下优势：重量大大减轻，便于运输，适合室温保存，易于再水化。

Finally, the selected iron compounds were mixed with skim or whole milk powder directly and stored for a week in room temperature. The fortified milk powder was tested for color, flavor and precipitation after rehydrating by 45°C ion-free distilled water.

最后再将上述经筛选之铁剂以市售铁强化制品之剂量直接与全脂及脱脂乳粉混合并於室温下储存一周后，以45℃去离子水复水，观察其色泽、风味及沉淀与否等项目。

Finally, the selected iron compounds were mixed with skim or whole milk powder directly and stored for a week in room temperature. The fortified milk powder was tested for color, flavor and precipitation after rehydrating by 45°C ion-free distilled water.

最后再將上述经筛选之铁剂以市售铁强化製品之剂量直接与全脂及脱脂乳粉混合並於室温下储存一週后，以45℃去离子水復水，观察其色泽、风味及沉淀与否等项目。

The retorting process of coals using hot char as solid heat carrier lines up every single process which is needed for the production of CMS.

以灵武煤半焦GLW-72为原料，粉碎至粒度＜160目，混入40wt%的亚硫酸盐纸浆废液成型，将成型物在N〓气保护下，以10℃/min的升温速率加热到900℃碳化45min，冷却到室温所得碳化产品用于变压吸附空分，可获得含N〓96.3vol%的富N〓气体；将上述产品进一步作碳沉积处理，可获得空分性能达98.4vol%的炭分子筛，该结果与在同一空分装置上测得的国外炭分子筛的空分性能（98.23vol%）相当。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon-nitrided carbon steel and of the sulfurized one were examined by means of X-ray photoelectron spectroscopy and X-ray diffraction.

采用MPX-200型摩擦磨损试验机考察了碳氮共渗及室温电解硫化处理后的20#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐