密封剂

Combined with the moisture in the air in the room temperature, it will produce interconnection and vulcanize into high performance elastomer.

I。概述单组份室温固化硅胶是一种铝壳或塑料桶单包装的粘稠液或膏状的胶料，它能在室温下与空气中的水分结合引起交联，硫化成为高性能弹性体，它是一种优良的金属及非金属材料的粘结剂和密封胶。

It includes the following steps: extract trivalent iron ion and divalent iron ion in water phase through organic extractant, get predecessor of; absterge it with secondary distilled water for2-3 times and get pure load metal predecessor of organic phase; mix organic phase of Mg2 and Fe3 with mol rate of 1:2 and introduce them into autoclave, add distilled water according to the rate of 3:1 or 4:1 of organic phase and water phase and airproof it, and then mix it fiercely, stripping with hydrothermal method at temperature between 200 degree C and 300 degree C and make them react for 2.5 hours; cool it to the room temperature under natural condition, separate liquid and centrifugalize it, absterge it with absolute alcohol for 2-3 times and dry it at temperature of 50 degree C for 30-180 minutes, then get product of magnesium ferrite.

包括如下步骤：通过有机萃取剂来萃取水相中的三价铁离子和二价镁离子，制得有机相前驱物；用二次蒸馏水洗涤2-3次，获得纯净的负载金属有机相前驱物；按照Mg 2 和Fe 3 摩尔比1∶2将有机相混合均匀后引入高压釜中，按照有机相与水相的比例为3∶1或4∶1加入蒸馏水，密封后，对溶液进行强力搅拌，水热反萃的温度在200-300℃之间反应2.5小时；自然冷却至室温，分液，离心分离，用无水乙醇洗涤2-3次，在50℃下干燥30-180分钟，得铁酸镁产品。

Taking some azotic acid, he mixed it with glycerine, which had beenpreviously concentrated by evaporation, subjected to the water-bath, and heobtained, without even employing a refrigerant mixture, several pints of anoily yellow mixture.

他事先用蒸发的方法浓缩了甘油，现在他就用一只水槽把少量的硝酸和甘油混合在一起。于是，连冷却剂也不用，就得到好几品脱的黄色混合油液。是把硫酸铁的结晶密封在瓶子里，进行锻烧。

Shford Formula--The original concrete densifier, sealer and hardener.

/F：最早的混凝土固化、密封和硬化剂。

Finally heat the starch to 80℃dextrinize 2h,keep warm 0.5h,then cooled to 40℃,add 2.8%CAN initiator,7.5%MMA monomer,sealed and stir 3.3hours of the nitrogen atmosphere,using the screw rod center distance is 32mm,expects the tube diameter phi300mm major axis compared to L/D is 12.5 double screw rods extruding machines,controls the screw rod rotational speed 100rpm sample water content when 20%squeezes out,and the results indictated that the sample may bear 302℃within the high temperature,the water resistance is 14.7%,buried in the simple earth passes through about 180 day to be allowed to achieve the nearly 60%weightlessness rate, and can be basically completely degrades.

因此将淀粉80℃糊化2h，保温0.5h，40℃添加2.8%引发剂，7.5%MMA单体，通氮气密封搅拌反应3.3小时后的接枝产物，利用螺杆中心距为32mm，料筒直径f300mm长径比L/D为12.5的双螺杆挤出机，控制螺杆转速100rpm样品含水量20%时挤出，测定知道样品可以耐302℃以内的高温，耐水性为14.7%，在简单土埋的情况下，经过180天左右可以达到近60%的失重率，可以说基本上完全降解。

In view of the unique and complicated completion method for gas drilling, and high cost and low reliability of DDV and leakless inflatable screen pipe, the stuffed screen pipe with temporary plugging agent was developed autonomously.

针对气体钻井完井方式单一、完井程序复杂、采用套管阀或非透式可膨胀筛管完井技术成本高、可靠性差等问题，自主研发了利用暂堵剂密封筛管的实体筛管完井技术。

So we explored another method of preserving the fermentation liquid directly: Regulating the pH of fermentation liquid between 1.0 and 2.0, sealing and keeping it in photophobic at the normal atmospheric temperature.

为避免提取对絮凝剂活性的损失，探索出了直接保存发酵液的方法：调节发酵液pH=1.0~2.0，密封后常温下避光保存。

In this way, the developer seal member that is removably attached to the developer storing container can be pulled out without fail.

借此，能够可靠地防止忘记拔出可去除地安装在前述显影剂容纳容器上的显影材料密封构件。

Sealless pumps were used for many application including handling abrasive, corrosive and foul liquids

无密封的磁力泵可以应用在研磨剂的，腐蚀的和污秽的液体

The properties of ZY-2 sealant were presented,the effects of tackifier,filler and thixotropic resin were mainly discussed in this paper.

本文介绍了ZY - 2指压密封胶的基本性能，并讨论了增粘剂、填料、触变性树脂对体系性能的影

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。