47results about How to "Good centrifugal stability" patented technology

The invention provides a wood waterproof agent adopting a silicone emulsion, a method for preparing the wood waterproof agent, and a method for preparing waterproof wood by utilizing the wood waterproof agent. The method for preparing the wood waterproof agent comprises the following steps: first, preparing a silicone oil emulsion primary liquid which contains hydroxyl silicone oil, hydrogen-containing silicone oil, a surfactant, nano-silicon dioxide, micron-silicon dioxide and water; then, diluting the silicone oil emulsion primary liquid into silicone oil emulsions of different concentrations; and finally, adding a catalyst for uniform dissolution and mixing. When the silicone oil emulsion wood waterproof agent provided by the invention is utilized for vacuum-pressurization pretreatment of wood, the waterproof performance and size stability of the wood can be improved, the hygroscopicity of the wood can be reduced, and the contact angle between the treated wood surface and water is larger than 140-150.

Carboxy silicone latex emulsion is produced by: reacting the mixture of the ester group modified silicone oil, small molecular oxosilance, emulsifier, accelerating agent-dodecyl benzene sulflnic acid and water at 70-95deg.C for 5-15 hours, neutralizing by adding the sodium acid carbonate after the reactor is cooled. Its composition comprises (wt%): the use level of the ester group modified silicone oil and small molecular oxosilance is controlled by the termination product that the chain joint of organic silicon which contains carboxy has the 0.5-30% of all chain joint of organic silicon, 0.1-10% of the emolsifier, and 3-30% of the accelerating agent -dodecyl benzene sulflnic acid. It features: hydrolyzing of the ester group and polymerizing of oxosilance generate at the same time. Through the adjustment of the use level of dodecyl benzene sulflnic acid and non-ionic emolsifier, the grain size of the carboxy silicone oil latex emulsion can be modified, even the micro-latex emulsion will generate.

The present invention discloses an oxidized polyethylene wax micro-emulsion composition and a preparation method thereof. The micro-emulsion composition comprises: 1) 15-35 wt% of an oxidized polyethylene wax with a melting point of 110-150 DEG C, 2) 3-15 wt% of a nonionic surfactant, 3) 0.5-5 wt% of an organic alcohol amine auxiliary emulsifying agent, and 4) 50-80 wt% of water. The micro-emulsion composition can be prepared by using a multi-step high temperature emulsification method, and has characteristics of particle size of less than 100 nm, uniform distribution, centrifugal stability, good acid resistance stability and good alkali resistance stability. In addition, the micro-emulsion composition can be diluted with cold water in any proportions while no particle is precipitated, and the storage stability exceeds more than 6 months.

The invention belongs to the technical field of cosmetics. The invention discloses a vegetable oil composition. The composition consists of grape seed oil, sun flower seed oil, sweet almond oil, oliveoil and jojoba seed oil in a weight ratio of (1-10):(1-10):(1-10):(1-10):(0.2-5). The invention also discloses face cleaning oil and a preparation method thereof. The face cleaning oil of the presentinvention includes the vegetable oil composition of the present invention, vegetable essential oil, a mixed emulsifier of polyglycerol-3 ricinoleate and polysorbate-85, and tocopherol acetate. The face cleaning oil disclosed by the invention is high in safety, can be used for deeply cleaning color makeup and dirt, is high in makeup removal efficiency, is refreshing and not greasy while effectively cleaning the skin, can be used for effectively resisting bacteria and diminishing inflammation on the skin, and has the effect of repairing the skin. Besides, the face cleaning oil disclosed by theinvention has good performance stability. The preparation method of the face cleaning oil is simple, has low equipment requirement, and is easy for industrial production.

The invention discloses a preparation method of a water-based carbon fiber sizing agent. The method comprises the following production steps that 1, an emulgator special for the carbon fiber water-based sizing agent is prepared; 2, acrylic-modified epoxy resin emulsion is prepared; 3, nano SiO2 particles dispersed by a coupling agent are poured into a reaction kettle, and after even mixing, the water-based carbon fiber sizing agent is obtained. The method has the advantages that the preparation technology of the sizing agent is simple, and preparation time is short; the sizing agent is moderate in viscosity, small in particle size and low in water absorption, emulsion is stable and environmentally friendly, and binding force between the sizing agent and carbon fibers is strong; the shear strength between sizing and a resin material is enhanced, and the abrasion resistance of the sizing is certainly improved.

The invention discloses an emulsifier for branched chain reaction type epoxy resin and a preparation method thereof. The emulsifier contains the following molecular structures: N1 is monoamine polyether amine, P is a trifunctional epoxy monomer or a trifunctional acrylate monomer, and Q is a bifunctional epoxy monomer. The preparation method comprises the following steps: reacting a P monomer withmonoamine polyether amine N1 to obtain an intermediate product; and reacting the intermediate product with a Q bifunctional epoxy monomer to obtain the emulsifier. The structure of the prepared emulsifier contains an epoxy group, the emulsifier has good compatibility with epoxy resin, and the epoxy resin emulsion prepared from the emulsifier has good storage stability, centrifugal stability and freeze-thaw stability; meanwhile, the structure of the epoxy resin emulsion contains an epoxy group, so that the epoxy resin emulsion can participate in a curing reaction to enter a cured product network, and a cured coating has excellent medium resistance; the synthesis process is simple, the structure is clear, and no catalyst is needed.

The invention discloses a fresh tea leaf essential oil toner and a preparation method thereof. The fresh tea leaf essential oil toner is prepared from the following raw materials in parts by weight: 5-8 parts of fresh tea leaf essential oil, 10-15 parts of dendrobium officinale leaf extracting solution, 4-8 parts of butanediol, 0.8-1.6 parts of pure plant emulgator, 0.5-1.0 part of sodium hyaluronate and 70-80 parts of deionized water. In the invention, the natural plant fresh tea leaves and dendrobium officinale leaves are taken as raw materials; the fresh tea leaf essential oil toner is richin nutritional ingredients, such as esters, alcohols, terpene, polysaccharide, vitamin C and protein and has a pleasant fragrance; all the components interact with each other; contents of the components are optimized, so that the final formula is green and natural, safe and mild, nontoxic, harmless and non-irritant, and has the effects of oxidation resistance, anti-aging, antisepsis and anti-inflammation properties and the effects of promoting epithelial cell regeneration and repairing injured skin. The preparation method disclosed by the invention is simple in technical process, simple in operation and suitable for large scale production.

The invention discloses a disperse dye paste capable of effectively retarding precipitation. The disperse dye paste is characterized by comprising urea with a weight of 0.05 to 0.5 time of the total weight of a disperse dye component, and a dispersant with a weight of 0.6 to 6 times of the total weight of the disperse dye component, wherein the disperse dye component is one or more selected from compounds as shown in a formula in the specification. In the formula, R1 is H or -NO2; R2 and R3 are selected from the group consisting of H, or -Cl, -Br, -CN, -CF3, -NO2 and -COOR8; R4 and R5 are selected from the group consisting of H, or alkyl, alkoxy and -NHCOR9; R6 and R7 are selected from the group consisting of alkyl, alkoxy, or alkyl or alkoxy with an H substituted by -OH, -CN or -Ph; and R8 and R9 are alkyl. The disperse dye provided by the invention is a liquid dye, and has high dyeing rate, good deep dyeing properties and excellent dyeing fastness; and compared with an ordinary commercial disperse dye paste, the disperse dye paste provided by the invention has the following advantages: the aggregation and precipitation rate of dye particles is significantly reduced, and better storage stability is obtained.

The invention relates to turbo molecular pumps enabling high pumping speed. The disclosure suggests using one or more cage-like rotor stages to optimize pumping speed on vacuum systems with low gas flows and low ultimate pressures. This allows for a smaller motor as well as smaller overall form factor and makes it well suited, in particular, for compact mass spectrometers and desk-top mass spectrometers.

The invention discloses a water pump structure, which comprises a pump body. A water inlet is opened above the pump body and a water outlet is opened below. The pump body is divided into a working part and a fluid part. The working part and the fluid part are separated by a protruding part. A compartment is arranged in the inner part, a pump core is arranged in the working part, the top of the pump core is located in the protruding part, and an impeller is installed at the end of the pump core. The invention has the beneficial effects of simple structure, convenient use and operation, high safety, good stability, tight cooperation of water pumps, improved work efficiency, and improved centrifugal stability by adopting the impeller.