Potassium hydroxide has important applications in chemical industry because of its strong alkalinity and corrosiveness. It can be widely used in drying agent, adsorbent, refractory adhesives and other fields. So let's take a look at the preparation of its refractory adhesives.

　　(1)原料及配方

　　(1) Raw materials and formulations

　　(1)耐火配方材料比/kg材料比/kg氫氧化鉀8金屬硅化物30粉末碳酸鈉7水60。

　　(1) refractory formula material ratio / kg material ratio / kg potassium hydroxide 8 metal silicide 30 powder sodium carbonate 7 water 60.

　　無機耐火膠配方料比/質量料比/質量耐火溶液10稻殼5舊報紙80棉5。

　　Inorganic refractory formula ratio/mass ratio/mass refractory solution 10 rice husk 5 old newspaper 80 cotton 5.

　　(2)氫氧化鉀耐火膠粘劑的制備方法

　　(2) Preparation of Potassium Hydroxide Refractory Adhesive

　　(1)難熔溶液的制備方法:反應釜中依次加入8kg顆粒氫氧化鉀、7kg粉狀碳酸鈉(純堿)(旭硝子玻璃有限公司)和30kg金屬硅化物，再加入60l水。在自然反應開始的地方，自由基反應從氫氧化鉀的較低水平開始，對流從反應池的底部到上部發(fā)生。反應溫度自然升高。當反應溫度在80~90℃范圍內時，反應處于活性狀態(tài)。反應溫度不應超過92℃。反應在10h左右完成，固體被分離。可獲得約48l(約70kg)的耐火材料。殘余固體為金屬硅化塊。如果用水沖洗，大約會留下22公斤的金屬硅化塊。在剩余的金屬硅化塊中，加入約8kg的金屬硅化塊，總量為30kg的金屬硅化塊，供二次反應使用。以同樣的方式作為主要的反應,8公斤的細粒度的氫氧化鉀和7公斤的粉末碳酸鈉(純堿)(禁欲的玻璃有限公司)被添加到反應池,緊隨其后的是22公斤的殘留金屬硅化物塊和8公斤的新金屬硅化物塊從主反應,其次是60 l的水,開始二級耐火材料的制備反應。準備,根據(jù)個添加粒狀氫氧化鉀,然后添加碳酸鈉(純堿)粉,然后添加金屬硅化材料塊,然后添加水的順序添加水,低水平的氫氧化鉀開始反應,可以形成一個流上下積極反應,制備耐火性能好。

　　(1) Preparation method of refractory solution: 8 kg granular potassium hydroxide, 7 kg powdered sodium carbonate (soda ash) (Xunizi Glass Co., Ltd.) and 30 kg metal silicide were added into the reactor in turn, and 60L water was added. Where natural reactions begin, free radical reactions begin at a lower level of potassium hydroxide, and convection occurs from the bottom to the top of the reaction pool. The reaction temperature increases naturally. When the reaction temperature is in the range of 80 ~ 90 C, the reaction is in the active state. The reaction temperature should not exceed 92 C. The reaction was completed in about 10 hours and the solid was separated. About 48l refractories (about 70kg) can be obtained. Residual solids are metal silicides. If washed with water, about 22 kilograms of metal silicide will be left behind. In the remaining metal silicide blocks, about 8 kg of metal silicide blocks with a total amount of 30 kg were added for secondary reaction. In the same way as the main reaction, 8 kg of fine-grained potassium hydroxide and 7 kg of powder sodium carbonate (soda ash) (abstinent glass company limited) were added to the reaction tank, followed by 22 kg of residual metal silicide and 8 kg of new metal silicide from the main reaction, followed by 60 l of water, to start secondary fire resistance. The preparation reaction of the material. Prepare, according to the first adding granular potassium hydroxide, then adding sodium carbonate (soda) powder, then adding metal silicide blocks, then adding water sequentially, low level potassium hydroxide starts to react, can form a flow up and down positive reaction, preparation of good fire resistance.

　　(2)耐火膠的制備:耐火液、切舊報紙(其他舊紙也可以使用)、稻殼、棉花分別放入反應槽中，充分攪拌均勻生產耐火材料。

　　(2) The preparation of refractory adhesive: refractory liquid, cut old newspaper (other old paper can also be used), rice husk and cotton are put into the reaction tank respectively, and the refractory material is produced by fully mixing.

　　(3)如果這種耐火膠粘劑的性能是用耐火材料涂覆的，涂覆后的木材在1000~c火焰附近不會燃燒30分鐘。將耐火混合料加壓脫水45%含水率，180℃加壓1h制得輕質耐火材料?；馂脑?500℃下觀察30min。10分鐘后，火的表面被陶瓷化。燃燒30分鐘后，將火切成大火。此外，耐火材料的隔音和耐沖擊性也很好。其可切、鋸、釘、螺絲等加工性能與木材相似。

　　(3) If the properties of this refractory adhesive are coated with refractory materials, the coated wood will not burn for 30 minutes near the 1000-c flame. The lightweight refractories were prepared by dewatering the refractory mixture under pressure to 45% moisture content and pressing at 180 C for 1 h. The fire was observed for 30 minutes at 1500 C. Ten minutes later, the surface of the fire was ceramized. After burning for 30 minutes, cut the fire into large pieces. In addition, refractories have good sound insulation and impact resistance. Its cutting, sawing, screw and other processing properties are similar to wood.

　　以上是氫氧化鉀防火膠的制備方法和相關的知識介紹,這種防火膠可以替代傳統(tǒng)的紙板,聚苯乙烯泡沫塑料和其他金屬板,用于制備冷質量,電視機殼,包裝材料和家具,廚具,等,功能非常大,希望你能理解。

　　The above is the preparation method and related knowledge of potassium hydroxide fire retardant glue. This fire retardant glue can replace traditional cardboard, polystyrene foam plastic and other metal boards. It can be used to prepare cold quality, TV case, packaging materials and furniture, kitchenware, etc. It has great functions. I hope you can understand.