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74results about How to "Increase liquid viscosity" patented technology

Liquid ejection apparatus and ejection abnormality factor extraction method

The liquid ejection apparatus includes: a liquid ejection head including a nozzle which ejects liquid, a pressure chamber which is connected to the nozzle and is to be filled with the liquid, a pressure generating element which pressurizes the liquid in the pressure chamber, and a pressure determination element which determines a pressure inside the pressure chamber and outputs a pressure determination signal; a storage device which stores a peak value of the pressure determination signal output by the pressure determination element in a state where the nozzle ejects the liquid normally; a first ejection abnormality factor extraction device which extracts a first ejection abnormality factor by comparing the peak value stored previously in the storage device with the pressure determination signal output by the pressure determination element during a prescribed period for ejection abnormality determination; a threshold value variably setting device which sets a threshold value for extracting a second ejection abnormality factor according to a differential between the peak value stored previously in the storage device and a peak value of the pressure determination signal output by the pressure determination element during the prescribed period for ejection abnormality determination; a pulse generation device which is capable of generating pulses according to a comparison result between the threshold value set by the threshold value variably setting device and the pressure determination signal output by the pressure determination element during the prescribed period for ejection abnormality determination; and a measurement device which extracts the second ejection abnormality factor by measuring a time interval of the pulses generated by the pulse generation device.
Owner:FUJIFILM CORP

Stable multilayer-film structural foaming agent and preparation method thereof

The invention particularly relates to a stable multilayer-film structural foaming agent and a preparation method of the stable multilayer-film structural foaming agent. The technical scheme is that the preparation method comprises steps as follows: getting 20 to 50wt% of main agent, 20 to 50wt% of assistant and 20 to 50wt% of foam stabilizer as the raw materials at 15 to 25 DEG C; then adding foam stabilizer of which the mass is 10 to 20 times that of the raw materials mentioned above; and agitating for 5 to 15 minutes, so as to obtain the stable multilayer-film structural foaming agent, wherein the main agent is one of sodium lauryl sulfate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, alkylphenol ethoxylates and fatty alcohol-polyoxyethylene ether; the assistant is one of dodecanol, polyethylene glycol, setanol, octadecanol and lauromacrogol; and the foam stabilizer is one of sodium carboxymethylcellulose, gelatin, sodium carboxymethyl starch, arabia gum adhesive and hydroxyethyl cellulose. The preparation method has the characteristics of being simple, convenient to operate, and short in preparation time and the like; and the prepared stable multilayer-film structural foaming agent is relatively small in dimension, uniform in distribution, full in foaming and high in stability.
Owner:WUHAN UNIV OF SCI & TECH

Tackifying and filtrate reducing agent for low soil phase and high density drilling fluid, and preparation method thereof

InactiveCN105017475AGood for adjusting rheologyImprove carrying cuttingsDrilling compositionCross-linkOxygen
The invention provides a tackifying and filtrate reducing agent for a low soil phase and high density drilling fluid, and a preparation method thereof. The tackifying and filtrate reducing agent is a polymer formed through appropriate cross-linking polymerization of an olefin monomer and a silane coupling agent. The preparation method comprises the following steps: 1, mixing acrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylonitrile, N-isopropylacrylamide and the coupling agent in water; 2, adjusting the pH value to 5-10; 3, introducing nitrogen to remove oxygen, adding an initiator at 20-90DEG C, and reacting for 1-10h to obtain a viscous product; and 4, drying the viscous product, and crushing. The tackifying and filtrate reducing agent for the low soil phase and high density drilling fluid has good temperature and salt resistance; the tackifying and filtrate reducing agent has good tackifying and shear strength improving effects in the low soil phase and high density drilling fluid, and is in favor of suspending a weighting material and carrying rock debris; and channels in mud cakes are plugged to improve the viscosity of a liquid phase, effectively reduce the filtrate loss and improve the wellbore stability.
Owner:山东得顺源石油科技有限公司

Foaming agent for improvement of slag oil of soil pressure balance shield and preparation method thereof

The invention provides a foaming agent for improvement of slag oil of a soil pressure balance shield and a preparation method thereof. The foaming agent for the improvement of the slag oil of the soilpressure balance shield is prepared from the following components in percentage by weight: 4% to 8% of alpha-alkenyl sodium sulfonate, 8% to 12% of lauryl sodium sulfate, 3% to 5% of alkylphenol polyoxyethylene, 0.05% to 0.2% of xanthan gum, 1% to 4% of coconut oil fatty acid diethanolamide, 1% to 3% of sodium gluconate, 0.5% to 2% of polyethylene oxide, 1% to 2% of polyaspartic acid, and the balance of water. The foaming agent has the advantages that by adopting the alpha-alkenyl sodium sulfonate, the lauryl sodium sulfate and the alkylphenol polyoxyethylene to prepare the foaming agent, thefoaming ability is enhanced under the compounding and cooperation function of the alpha-alkenyl sodium sulfonate, the lauryl sodium sulfate and the alkylphenol polyoxyethylene; the foaming time is greater than 30 times; by adopting the coconut oil fatty acid diethanolamide to enhance the surface action force of the air foam through cooperation, the stability of the foam under the high-speed shearing function of a knife disc is improved; the pressure fluctuation of a soil bin is reduced; the stability of the excavated surface of the shield is improved.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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