摘要:
PURPOSE: A manufacturing method of silicon carbide heat storage material from silicon sludge is provided to recycle silicon waste sludge generated during semiconductor or solar cell wafer process, thereby reducing manufacturing cost of the silicon carbide heat storage material. CONSTITUTION: A manufacturing method of silicon carbide heat storage material from silicon sludge comprises the following steps: providing silicon sludge generated in the silicon wafer cutting process; removing a part of oil by heat treating the silicon sludge under the non-oxidizing atmosphere; manufacturing slurry by mixing the silicon sludge with binder; manufacturing a honeycomb structure molded product(100) by extruding the slurry; and reaction sintering the molded product at 1300-1900 deg. Celsius under the non-oxidizing atmosphere. The silicon sludge includes SiC powder. The heat treatment in the oil elimination step is performed at 100-600 deg. Celsius. The silicon sludge after the oil elimination step includes 0.1-10 wt% of oil.
摘要:
PURPOSE: An environmentally-friendly loess mortar is provided to enhance tensile resistance and crack resistance by adding lyocell fiber. CONSTITUTION: An environmentally-friendly loess mortar includes loess as a binding material and 0.6-2.4kg/m^3of lyocell fiber. The environmentally-friendly loess mortar satisfies the following: fsp-v/fsp-n>1.4. Here, fsp-v stands for tension intensity value during split of test piece of loess mortar, and fsp-n stands for tension intensity value during split of test piece of loess mortar. An initial crack of the environmentally-friendly loess mortar is generated if the value exceeds 1.5 day. The environmentally-friendly loess mortar satisfies the following: 0.25
摘要:
PURPOSE: A composition for a floor and wall pavement material, and a manufacturing method thereof are provided to improve the water permeability, the elasticity, and the intensity of the composition by adding an acrylic liquid binding material. CONSTITUTION: A composition for a floor and wall pavement material contains 50~75%(v/v) of wood chip, 1~15%(v/v) of yellow soil powder, 0.5~10%(v/v) of sand, 0.2~5%(v/v) of granite soil, 1~25%(v/v) of aggregate, 0.5~3%(v/v) of acrylic liquid binding material, and the balance of water. A manufacturing method of the composition comprises the following steps: mixing the wood chip, the sand, the granite soil, and the aggregate; adding the yellow soil powder; and adding the acrylic liquid binding material and the water to the mixture, and mixing for 5~15 minutes.
摘要:
PURPOSE: An environmentally-friendly thick-film composition for floor materials is provided to improve the self-leveling effect, fast-curing property, shock resistance, adhesion performance efficiency, and abrasion resistance of a finishing member. CONSTITUTION: An environmentally-friendly thick-film composition for floor materials contains 30~80 parts by weight of a calcium salt system transformed compound and 20~70 parts by weight of a natural clay compound. The mixture additionally consists of 0.5~5 parts by weight of dispersing agent and 0.1~1.0 part by weight of a retarder based on 100 parts by weight of the mixture. The dispersing agent is selected from the group consisting of a vinyl acetate compound, an ethylene-acrylate copolymer, and oxy carboxylate. The retarder is selected from the group consisting of a polyamide compound, polyalcohol and cellulose. The calcium salt system transformed compound is a slag system compound which is selected from the group consisting of blast furnace slag, converter slag and steel-manufacturing slag. The natural clay compound is selected from the group consisting of a kaolin system mineral, a montmorillonite group mineral, illite, glauconite, yellow soil, and processing silica.
摘要:
A facing clay mixture and a manufacturing method thereof by using the grass fiber are provided to offer the excellent heat insulation property and the excellent soundproofing effect. A grass with the full growth is obtained and dried and thereafter cut by the length of 1-2cm. Thereafter, the cut grass is immersed into the water and tempered. Thereafter, the tempered grass is taken out of water and then the grass of 5-10 volume% and the water of 90-95 volume% are mixed with each other. Thereafter, the mixture is inserted into a roughening device with a rotation wing of thickness of 0.1-3cm and length of 8-20cm instead of the edge of a knife of a mixer and then agitated for 1-3 minutes. The roughened grass paste is washed in water and dried. Thereafter, the dried paste fiber with length of 1-2cm and clay are mixed by the volume ratio of 1:0.9-5 and the water of 30-40 volume % to the entire volume ratio is mixed so that the construction facing clay is manufactured.
摘要:
A clay brick and a manufacturing method thereof by using the grass fiber are provided to roughen the long fiber and to manufacture the embedded materials for construction by means of the roughened paste fiber. A grass with the full growth is obtained and dried and thereafter cut by the length of 3-5cm. Thereafter, the cut grass is immersed into the water and tempered. Thereafter, the tempered grass is taken out of water and then the grass of 5-10 volume% and the water of 90-95 volume% are mixed with each other. Thereafter, the mixture is inserted into a roughening device with a rotation wing of thickness of 0.1-3cm and length of 8-20cm instead of the edge of a knife of a mixer and then agitated for 1-3 minutes. The roughened grass paste is washed in water and dried. Thereafter, the dried grass paste and clay are mixed by the volume ratio of 1:0.2-5 and the water of 20-30 volume% is mixed in the entire volume, thereafter the clack brick with various sizes is compressed and dried. The dried mixture is cut by the necessary size.
摘要:
A manufacturing method of a fiber board using grass fiber and a fiber board manufactured by the same are provided to produce the fiber board by mixing an adhesive with a disintegrated fiber after disintegrating the grass without chemical treatment. A grown grass is harvested, dried and cut to 3-5 centimeter length. The cut grass is digested and soaked in water. The soaked grass is taken out of water, and mixed with water to make 5-10 volume% grass and 90-95 volume% water. The mixture is disintegrated by being agitated for 1-3 minutes in a disintegrating machine. A rotation wing made of a dull blade having 0.1-3 centimeter thickness and 8-20 centimeter length is stuck to the disintegrating machine, and is rotated with 10000-16000 RPM(Revolution per Minute). The disintegrated fiber grass is separated, rinsed by water and dried. The dried grass fiber of 90-95 % weight ratio is mixed with the urea resin adhesive or urea and melamine resin of 5-10 % weight ratio. The mixed grass fiber and the adhesive are injected and applied to form the uniform mixture by a turbulent flow generated from the high pressure vapor. After building the layer of fixed thickness, a mechanical pressure is added for 20-30 seconds at the 160-180 degrees celsius heat. The fiber board is made by cutting and grinding after being dried in the room temperature under 70 degrees celsius.