化工类翻译

化工类-道康宁英译中

原文：

DESCRIPTION

Dow Corning IE-6692 Emulsion is a 52.5% active non ionic emulsion containing alkoxysilanes. Silanes are well known for their ability to provide hydrophobicity and decrease dramatically the water ingress of cementitious materials. Silane supplied in emulsion can chemically react with cement hydrate during cement cure. Alcohol is released upon reaction of the silanes.

HOW TO USE

It is advised to stir Dow Corning IE-6692 Emulsion prior to its application.

Dow Corning IE-6692 Emulsion can be used as supplied or can be diluted in water before use. The water should be added to the emulsion with low shear mixing. Deionized water is recommended for dilution. After dilution, it is advised to make sure the pH is maintained in the 5-9 range. To prevent mold growth within the package, additional preservative may be required if the diluted emulsion is expected to be stored.

Dow Corning IE-6692 Emulsion can be used as an admixture to cementitious mixtures at levels between 0.1 to 0.2% by weight of Dow Corning IE-6692 Emulsion as supplied based on the dry composition weight.

If calculated to cement mass, an addition level of Dow Corning IE-6692 Emulsion between 0.4 and 0.8% vs cement is advised.

Tested as integral water repellent in EN 196-1 mortar, addition of 0.2% Dow Corning IE-6692 Emulsion was shown to have limited impact on mechanical properties. It is however strongly advised to carry out an evaluation of Dow Corning IE-6692 Emulsion addition on the physical properties of the targeted cement-based materials prior to any use in full scale application.

译文：

概述

道康宁IE-6692乳液是一种活性成分为烷氧基硅烷含量为52.5%的非离子乳液。硅烷众所周知具有疏水性和显著减少水进入胶结材料。乳液中的硅烷在水泥固化过程中可与水泥水化物反应。硅烷在反应中释放乙醇。

使用方法

建议使用之前将道康宁IE-6692乳液摇匀。

道康宁IE-6692乳液可直接使用或稀释后再使用。在缓慢搅拌下将水加入乳液，最好用去离子水稀释。稀释后,建议pH值保持在5-9的范围内。乳液稀释后若需保存，为防止发霉,需要添加防腐剂。

道康宁IE-6692乳液可以按照干重计0.1至0.2%含量添加入粘结剂混合物中。

如果以胶粘剂质量计,建议添加道康宁IE-6692乳液与胶粘剂的配比为0.4至0.8%之间。

在EN196-1灰浆中测试出其具有完全防水性,而当额外添加0.2%的道康宁IE-6692乳液后显示其对机械性能的影响有限。因此强烈建议在全面使用之前评估道康宁IE-6692乳液添加量对目标胶粘剂物理性质的影响。

测试-新闻稿-拜耳化工

原文：

Innovations over the past 30 years have led to a significant increase in the use of aqueous polychloroprene dispersions in the furniture and foam industries and, to a limited extent, in the construction and automotive sectors. A key contributory factor has been the reduction of volatile components in these dispersions to levels below 50 ppm. One disadvantage, however, is that typical formulations on the market have to be either activated before application by means of a rather complex procedure or formulated as 1K systems – with limited storage, temperature, shear and transport stability. But now Bayer MaterialScience has discovered that carbonic acid is a

user-friendly activation method for water-borne polychloroprene dispersions. This enables high wet adhesion properties to be combined with the simple and reliable handling of 1K adhesives while still benefiting from the pre-activation storage and transport stability that typifies 2K adhesives.

经过30年的创新，水性氯丁橡胶分散体已经广泛用于家具和泡沫行业,在建筑和汽车行业也有一定的使用。其中一个关键因素是将这些分散体系中的挥发组分减至低于50ppm。然而有一个缺点是市场上典型的配方必须或者在使用之前通过一个相当复杂的过程激活组分或者是制定一个1 k系统，而这个1K系统的存储、温度、剪切和传输方面稳定性都非常有限。现在拜耳材料科学家已经发现,使用碳酸激活水性氯丁橡胶分散体系简便可行。这种方法使高湿粘附组分与经过简单可靠处理的1k粘合剂结合,同时又保持了激活之前的似于2 k粘合剂的储存和运输稳定性。