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33results about How to "Fast viscosity" patented technology

Crystalline silicon solar cell front silver paste and preparation method thereof

The invention discloses a crystalline silicon solar cell front silver paste and a preparation method thereof. The front silver paste comprises the following components in percentage by weight: 85-90%of silver powder, 5-10% of an organic carrier, 5-10% of an organic carrier, 1.5-5% of composite glass powder, and 0.05-1% of a silver paste additive. The silver powder in different particle size distribution is cooperatively used, the slurry is good in ink permeability, and the silver powder particles in the grid line are more uniformly and tightly filled, so that the sintering density of the gridline is facilitated, the resistance of the grid lines is reduced, and the photoelectric conversion efficiency is improved. The preparation process of the glass powder is simple, the control is facilitated; the glass powder with different components is compounded and used, so that a series of particles are uniform, the softening temperature is low, and the composite glass powder has good wettability to the silver powder and the silicon substrate, a front silver paste prepared from the composite glass powder is sintered on the front surface of the cell, the silver electrode and the silicon havegood ohmic contact and welding performance, and the adhesion strength of the electrode is high.
Owner:湖南省国银新材料有限公司

Preparation method of polyester polyol for laminated film adhesive

The invention provides a preparation method of polyester polyol for a laminated film adhesive. The preparation method comprises steps as follows: primary feeding is performed, 25.0%-35.0% of aromaticbinary carboxylic acid and 25.0%-40.0% of small-molecular diol are fed into a reaction kettle, programed heating is executed to promote esterification reaction, and after an acid value is reduced to 10-30 mgKOH/g, cooling is performed for secondary feeding; 25.0%-40.0% of aromatic binary carboxylic acid and 5.0%-15.0% of small-molecular diol are subjected to secondary feeding, the temperature is increased again, the esterification reaction is performed, water is produced, a tetrabutyl titanate or stannous octoate catalyst is added, programed heating and programmed vacuum are controlled, and atarget polyester polyol product containing both benzene ring aromatics and aliphatic hydrocarbon is obtained; the target polyester polyol product is primary hydroxyl terminated difunctional polyol andhas higher reactivity with isocyanate groups. The polyurethane adhesive prepared from polyester polyol as a main soft segment through polymerization is suitable for adhesion of food packaging laminated films which meet the high-temperature requirement and have steaming resistance for sterilization.
Owner:SHANGHAI LIANJING MATERIAL ASSETAB

Drilling fluid cleaning system device

The invention discloses a drilling fluid purifying system and a device thereof, which are used for the circulating purification and ground configuration of the drilling fluid in the drilling operations of petroleum, geological exploration and non-excavation and the like. The drilling fluid purifying system and the device comprise an initial processing tank and a post processing tank which are provided with vibrating screens, deaeration devices, desanders, desilters and centrifugal machines as well as a slurry mixing tank provided with a mixing funnel, a central suction pipe penetrating through each bin of the tank is respectively arranged in the inner cavity of each tank, a main spraying pipe communicated with each bin of the tanks is arranged outside the tanks, a bottom suction pipe communicated with each bin of the tanks is arranged below the tanks, slurry dividing pipes connected to the mixing funnel are arranged at the top of the slurry mixing tank and the adjacent tank, a drilling fluid output pipe is arranged at the rear end of the system, the central suction pipe and the bottom suction pipe of each tank are connected into the suction end of a sand pump of each tank, the main spraying pipe of each tank and the related equipment on the tank top are connected into the paralleled discharging pipes of the sand pump, and the sand pump of each tank or each tank is respectively connected with the discharging ends of other sand pumps in parallel through the main spraying pipes. The invention aims to solve the defects of bad mixing uniformity, low efficiency and much sediment in the existing purifying device by utilizing a reasonable structure.
Owner:孙泽义

Preparation method and application of plasticized melt-spun commodity-grade active PAN precursors

The invention relates to a preparation method and application of plasticized melt-spun commodity-grade active PAN precursors. Copolymerized PAN with the viscosity-average molecular weight of (5-7)x10<4> g/mol is selected as a raw material, [Bmim]Cl is selected as a plasticizer, sodium dodecylbenzene sulfonate is selected as a dispersing agent, and mixing is performed in a mechanical blending mode. A single-screw spinning machine is adopted for spinning, and the temperature of a melt blending area needs to reach 270 DEG C. The number of holes in a spinneret plate is 36, the hole diameter is 0.3 mm, the pump supply amount is 35 g/min, and the screw speed is 100-200 r/min. The temperature of a spinning workshop is 10-20 DEG C, the spinning stroke is 3-5 m, a traction roller is 300-400 m/min, and the draft multiples of a bottom layer roller, a middle layer roller and an upper layer roller are 2-2.5, 1.5-2 and 1.2-1.5 respectively. The precursors are soaked in deionized water with the temperature of 20-30 DEG C for 12-24 hours, and drying is performed in a drying oven with the temperature of 40-50 DEG C. The precursors are perfect in structure and contain a large amount of active free radicals.
Owner:ZHENJIANG COLLEGE
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