Putty powder Silicon nitride can also be applied to solar cells. After the silicon nitride film is plated by PECVD, not only can it be used as an anti-reflection film to reduce the reflection of incident light, but also, in the deposition process of the silicon nitride film, hydrogen atoms of the reaction product enter the silicon nitride film and the silicon wafer. It acts as a passivation defect. Here, the silicon nitride nitrogen atomic number ratio is not strictly 4:3, but varies within a certain range depending on the process conditions, and the physical properties of the film corresponding to different atomic ratios are different. Silicon Nitride Ceramic Disc,Black Silicon Nitride Ceramic Disc,Ceramic Structure Disc,Plate Silicon Nitride Disc Dongguan Haikun New Material Co., Ltd. , https://www.hkceram.com
1. The main function of plaster putty wall putty is to fill in the wall base layer, protect the wall, beautify the building and environment, and improve the physical properties of the wall decoration materials. It is also very special. Gypsum putty can be used by stirring with water, no glue is needed, it is very environmentally friendly, and it will not crack or peel.
At present, the application of gypsum putty is not much, mainly because people do not fully realize the performance advantages of this material, and the work done on the Institute is very few. However, the plaster putty has been functionalized by the addition of a functional auxiliary agent, such as hygroscopicity, anion release function, and the like, and attention has been paid to many studies. Due to the abundant natural gypsum resources in China and no environmental hazards, because of the good hygroscopicity and breathability of the living room, it can produce better health effects and decorative effects than organic paints currently used in large quantities. Excellent, and therefore should strengthen the application of decorative plaster putty. 
2, cement putty cement putty construction, good water resistance, high bonding strength, not easy to aging, has good hydrophobicity and breathability, but the cost is high, and the real dry cement-based need 7 months For a long time, the gypsum base only takes 3-5 days. Therefore, the gypsum base wins the cement base regardless of the construction or appearance after construction. 
3, cooked glue old powder cooked potato starch is specially modified and dried. Is a modified starch, cooked rubber powder is its trade name, because it is cold water soluble, hence the name cooked rubber powder, the current market, the more common cooked rubber powder is esterified and etherified modified starch, the product can be dissolved Cold water, strong adhesion, non-toxic and odorless is a kind of green environmental protection adhesive, which is widely used in interior wall treatment of putty powder in the construction industry.
The use of cooked rubber powder: After the powder is added, it can be used as a grey wall for concrete walls to make the wall smooth, cracks when the weather is dry, mildew when it is wet, and a very environmentally friendly decoration product. 
Advantages of cooked powder: The special fluffy powder can be well mixed with the powder and it is not heavy, and the water retention is good. It can extend the opening time, allowing the construction personnel to easily level the wall surface and the unique smoothness of starch. Greatly reduce the construction intensity, increase the construction area and improve the construction environment. 
â— Summary: Gypsum-based putty, cement-based putty, cooked old powder, etc. These are the types of putty common in home decoration, are relatively good putty, each with its own unique advantages, but now many decoration masters recommend the use of plaster Base putty, everyone can also choose according to the actual situation of their own home.
For ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.
Putty so much, I heard this is best used
There are several kinds of putty used by people in the decoration. The most common ones are plaster putty, cement putty, cooked glue, etc. What kind of better? We understand the following: