水性

DETERMINATION OF IMPERMEABILITY OF LINEN CLOTH FOR COVERS,TENTS AND EQUIPMENT.

织物试验，蓬布和设备用亚麻织物不透水性的测定。

Because the carbonyl in its structure is with strongly absorb-electron effect, so it is a kind of non-proton polarity solvent with high boiling point, high flash point and low melting point, use conveniently for many processing operation such as filtration, distillation, solvent extraction, and so on; it is with very low toxicity, so the harm to human body is inappreciable, and reduce the environment pollution; due to its very strong dissolvability, it can dissolve organic matter, inorganic matter, resin, polymer, etc., and activate all kinds of reagent, mix to dissolve the other high boiling point solvents; it is with very good stability, it is stable under the hot strong alkali and acidity condition, it is with water-resistance and light, oxygen stability.

246℃ m.p：—20℃闪点121℃ flash point： 121℃分子式：C6H12N2O molecular formula： C6H12N2O 分子量128.18 molecular weight： 128.18 二、DMPU的化学性质 Chemical character of DMPU 其结构中由于羰基具有强烈的吸电子效应，因而它是一种非质子的极性溶剂，具有高沸点、高闪点、低熔点，在过滤、蒸馏、溶剂萃取等工艺操作中使用方便；毒性极低，对人体危害微不足道，也减少了对环境的污染；由于它具有极强的溶解性，能溶解有机物、无机物、树脂、聚合物等，并对各种试剂具有活化性质，还能与其它高沸点溶剂混溶；具有极好的稳定性，在热的强碱和酸性条件下都很稳定，还具有耐水性及对光、氧的稳定性。

Waterborne polyurethane is dispersible in water medium, which has not only the excellent properties of solvent-borne polyurethane with good resistance, great adhesion, as well as outstanding toughness combined with good flexibility, but also advantages of incombustibility, low- odor and environmental friendliness.

水性聚氨酯是以水为分散介质的二元胶体体系，它不仅具有溶剂型聚氨酯的耐低温、柔韧性好、粘接强度大的优良性能，而且具有不燃、气味小、不污染环境、节约能源、操作加工方便等优点。

Aqueous polyurethane is dispersed in water media, which has not only the excellent properties of solvent-borne polyurethane with low temperature resistance, great adhesion, as well as outstanding toughness combined with good flexibility, but also advantages of incombustibility, low odor and environmental iLndliiiess that solvent-borne adhesive has not.

水性聚氨酯以水为分散介质，它不仅具有溶剂型聚氨酯的耐低温、柔韧性好、粘接强度大的优良性能，而且具有不燃、气味小、不污染环境等溶剂型胶粘剂所不具备的优点，因此倍受国内外研究人员的重视。

The sheet possesses good heat, cold and water resistance and incombustibility. Besides, excellent dielectric properties including proof tracking and arc resistance.

该板具有耐热性，耐寒性，不燃性，耐水性，电气绝缘性好等特征，此外，电气特性(由温度而产生的抵抗值的变化很小)，耐漏电起痕性，耐电弧特性方面也非常优秀。

If the nature of the absorbing paperboard use water-based ink drying effect, it depends on many factors, including ink evaporation rate, penetration and sedimentation rate.

若在具有吸收性质的纸板表面使用水性油墨，其干燥效果取决于多种因素，包括油墨蒸发率、穿透率和沉降率。

In his paintings, there is no weakness of general watercolour found, but only has oriental verve similar to the effect ink painting tinged by multi-layer light filtering of watering colours, and the characters in the painting—dog, cat, tiger and insects etc.

在他的画中，找不到一般水彩画的单薄感，只有水性颜料的多层次透光性所晕染出类似水墨效果的东风神韵，以及画中的主角们----狗、猫、虎、昆虫等在熟悉的生活风景中与人心灵交会。

It is a kind of nontoxic, inodorous, transparent, low_cost, easy-made water glazing oil, and without VOC emitting. It is useful in packaging printing in food, medicine and tobacco fields etc.

由于水性上光油具有无毒，无味，透明感强，无有机挥发物的排放，成本低，原材料来源广等特点，在使用中能赋于印刷良好的光泽性，耐折性，耐磨性和化学品性，尤其是它所具有的环保性能特别适合食品，药品和烟草等行业包装印刷材料的加工。

For the aqueous intaglio printing ink with solid content of 30 per cent, its viscosity increased with time.

用固含量为30%的PUA乳液配制的水性油墨的粘度随时间推移而增大。

And we added intaglio printing ink so that the plastic film gravure business card printing and membership card industry in the new full can achieve compliant products.

而WE型凹版水性油墨使塑料薄膜凹版制卡和会员卡制作领域中有了新的完全可以达到合格标准的产品。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。