I. 1. Appearance: pale yellow powder, no lumps 2. Functional acceptance criteria:. A, into a ball rate: materials for silicon carbide powder, add the amount of <1.5%, based on a rolling ball machine for the first time to pressure the ball after ball rate of> 90%, drying temperature control at 120 degrees, otherwise it will smoke. b, Intensity: 2 m floor is not broken. Second, for the production of silicon carbide powder characteristics: 1. powder added, reducing process. 2. Easy to use: After the powder can be mixed with other water and stir together can also be dissolved in water to make glue together with other powder after agitation; 3. Do not add any ash, do not drop low calorific value, no resistance burning (with combustion effect); strong bond, forming a good effect, the appearance of a uniform appearance; 4. Green: The main raw material is cotton, combustion products of CO2, does not produce harmful gases and other impurities, does not affect product quality, for safe and harmless to humans, environmentally friendly. 5. Disadvantages: binder higher price, customers need products based on their value better integrated use of cost accounting. Third, use: for composite powder, a high water absorption, high purity polymer 1, directly into powder: binder composite materials evenly added, the ratio of the material and the adhesive is generally 100: 1.5 . According to material particle size, surface area, the binder amount is different. 2, the material is wet, depending on the amount of water sprayed material and humidity conditions. Note that control humidity. 3. Stir, you can pressure the ball.