22results about How to "Improve thixotropy" patented technology

This application discloses a toothpaste thickening composition, a method for preparing the thickening composition, a toothpaste containing the thickening composition, and the application of the thickening composition in toothpaste preparation. The thickening composition includes a thickener and a humectant, and the thickener includes microcrystalline cellulose and carboxymethyl cellulose salt. The thickening composition of this application can improve the properties of toothpaste and has good versatility, making it suitable for various toothpaste formulations. This can help improve the efficiency of toothpaste product development and production, and the prepared toothpaste provides a good user experience.

The invention relates to the technical field of concrete, and particularly discloses a cement-based reinforcing thickener for dry-mixed mortar. The cement-based reinforced thickening agent for the dry-mixed mortar is prepared from the following raw materials in percentage by mass: 60 to 75 percent of Portland cement, 15 to 25 percent of fine aggregate, 5 to 10 percent of composite thickening agent, 3 to 4 percent of composite fiber and 1 to 2 percent of retarder, the composite thickening agent comprises a polycarboxylic acid type water reducing agent and modified cellulose ether, and the mass ratio of the polycarboxylic acid type water reducing agent to the modified cellulose ether is (1-1.5): 2. The cement-based reinforcing thickening agent for the dry-mixed mortar has the advantage of realizing collaborative optimization of multiple functions such as water reduction and reinforcement, thickening and water retention, crack resistance and shrinkage resistance in the dry-mixed mortar.

This invention provides a high-strength, anti-segregation self-compacting concrete, its preparation method, and its application, belonging to the field of tunnel and underground engineering technology. This invention utilizes steel fibers to prevent aggregate settlement, while polymer fibers tend to distribute in the upper slurry. Simultaneously, the surface structure of both steel and polymer fibers increases the mechanical interlocking force between the fibers and the slurry, effectively resisting the settling tendency of fibers and coarse aggregates. A cationic viscosity modifier imparts excellent thixotropic properties to the concrete, effectively locking in aggregates and moisture, preventing segregation, and achieving high flowability and high stability. Water glass reduces the impact of hardening shrinkage on concrete performance, improving its crack resistance and durability. Water glass also enhances the compatibility of aggregates with other raw materials. The "discontinuous gradation" strategy reduces the mechanical interlocking force of particles during mixing, causing a sharp drop in resistance during concrete flow, and then maintaining uniformity through frictional self-locking when stationary, thus improving its stability.

The invention provides a high-flexibility tear-resistant epoxy structural adhesive as well as a preparation method and application thereof. The epoxy structural adhesive is prepared by mixing a component A and a component B, on the basis of the total weight of the component A, the component A comprises the following components in percentage by weight: 34-70% of modified epoxy resin, 5-30% of bisphenol A type epoxy resin, 2-6% of benzyl alcohol, 8-15% of an epoxy reactive diluent, 0.2-1.5% of a defoaming agent, 1-5% of a thixotropic agent, 5-40% of filler and 1-4% of epoxy color paste; on the basis of the total weight of the component B, the component B comprises the following components in percentage by weight: 55-75% of polyether amine, 5-15% of bisphenol A epoxy resin, 5-10% of benzyl alcohol and 10-20% of dodecylphenol. The mixing mass ratio of the component A to the component B is (3.7-7): 1. The modified epoxy resin and the bisphenol A epoxy resin are compounded, and an optimized curing system is combined, so that the flexibility and the tear resistance of the structural adhesive are remarkably improved while the high strength of the epoxy resin is maintained, and the structural adhesive is suitable for structural bonding in the fields of buildings, automobiles, electronics and the like.

The invention relates to the field of hair dyes, in particular to a hydrogen peroxide mixed solution for a hair dye and a preparation method thereof.The hydrogen peroxide mixed solution is prepared from, by mass, 68-70 parts of an aqueous phase solution, 0.4-0.5 part of a gel matrix, 24-26 parts of self-made shampoo and 5-6 parts of a hydrogen peroxide aqueous solution; according to the invention, the aqueous phase solution composed of specific buffering and curing components, the gel matrix with thickening and stabilizing effects, the mild self-made shampoo carrier and the core oxidant are precisely compounded, so that the obtained mixed solution can maintain efficient oxidation performance, and at the same time, the storage stability and the mildness during use are obviously improved; according to the present invention, with the application of the composition, the thixotropy and the smearing experience of the paste are effectively improved, the process reproducibility is good, the product quality is uniform, the organic combination of the oxidation function and the hair care function is achieved, and the composition is suitable for various oxidation type hair dyes, and has wide application prospects in home and professional hair dyeing markets.

The present invention provides a dispersant for a conductive paste containing a component (A) represented by formula (1) and a component (B) represented by formula (2), the content of the component (A) being 93-99.9% by mass (inclusive) and the content of the component (B) being 0.1-7% by mass (inclusive) with respect to the entire dispersant. R1CO-NH-(R2)-OH (1) (In formula (1), R1CO represents an aliphatic acyl group having 6-22 carbon atoms and optionally having a hydroxyl group, and R2 represents an alkylene group having 2-3 carbon atoms) (2) R3CO-OH (In formula (2), R3CO represents an aliphatic acyl group having 6 to 22 carbon atoms (inclusive).

The present application relates to the technical field of metal powder material preparation, and particularly relates to a porous silver powder, a preparation method and application, by introducing a carbonate foaming agent into raw materials, the carbonate foaming agent can react with nitric acid generated in a liquid phase reduction process of silver nitrate and a reducing agent to generate carbon dioxide bubbles, and the carbon dioxide bubbles play an inducing role in a silver microcrystal formation process, so that the generated silver powder has a rich pore structure and a high specific surface area. Compared with the porous silver powder in the prior art, the porous silver powder has a higher specific surface area and sintering activity, by controlling the addition amount of the foaming agent, the pore structure, the specific surface area and the sintering activity of the silver powder can be accurately controlled, and the control method is simple, and the problems of low pore structure and high cost in the preparation of the porous silver powder in the prior art are solved.

The invention relates to a single-component polyurethane sealant as well as a preparation method and application thereof, and the single-component polyurethane sealant is prepared from the following raw materials in parts by mass: 25-50 parts of a polyurethane prepolymer, 30-60 parts of an inorganic filler, 0-5 parts of a tackifying aid, 5-10 parts of a thixotropic agent, 0-2 parts of a moisture scavenger and 0.01-1 part of a catalyst. The polyurethane prepolymer is prepared by reaction of polyester polyol, polyether polyol and isocyanate according to the mass ratio of (30-50): (20-30): (35-50). The single-component polyurethane sealant for sealing the gas meter has better thixotropy and higher curing speed, does not overflow in the construction process, has good solvent resistance, and can keep very small change rate of the mass change rate and the volume change rate after being soaked in a mixed solvent, so that the single-component polyurethane sealant can be used for sealing the gas meter. Good sealing performance can be maintained in the long-term use process.

The invention discloses gum barrier protection resin and a preparation method thereof. The resin is prepared from 40 to 70 parts of matrix resin, 20 to 40 parts of diluent resin, 5 to 20 parts of inorganic filler, 5 to 20 parts of ointment matrix, 0.1 to 0.5 part of initiator, 1 to 5 parts of auxiliary initiator and 0.1 to 1 part of polymerization inhibitor. The resin has the characteristics of low heat release and moderate curing speed, can prevent heat generated by curing from burning gingival soft tissues, has higher thixotropy, can be tightly attached to gingiva, can reliably isolate corrosive bleaching agents such as peroxide and the like, and can be used for preparing gingival soft tissues. Adverse reactions such as gingival causalgia and itching caused by solidification heat production and chemical irritant leakage are effectively reduced, and the gel is easy to smear, good in flexibility after solidification and easy to peel off integrally.

[Problem] The purpose of the present invention is to provide: a heat-curable composition which exhibits excellent transparency, exhibits good thixotropy, and provides a cured product exhibiting excellent heat resistance when heated; and a use of the heat-curable composition. A thermosetting composition containing: (A) a siloxane having at least one alkenyl group and at least one monovalent aryl group in the molecule and having 5 or less silicon atoms; (B) an aromatic polymer having a reactive functional group; and (C) a thermal radical initiator in an amount of 0.1-5 parts by mass per 100 parts by mass of the total of component (A) and component (B), the mass ratio of component (A) to component (B) being in the range of 40: 60 to 80: 20, and substantially no organic solvent being contained.

The invention discloses an organosilicone heat-conducting gel composite material as well as a preparation method and application thereof, and the organosilicone heat-conducting gel composite material comprises the following components in parts by weight: 30-50 parts of end-side chain vinyl silicone oil, 0-20 parts of double-end vinyl silicone oil, 5-20 parts of end-side chain hydrogen-containing silicone oil, 24-45 parts of a silane coupling agent, 0.1-1.0 part of a catalyst, 0.01-0.5 part of an inhibitor and 60-97 parts of heat-conducting filler. The organic silicon heat-conducting gel composite material provided by the invention has the advantages of high thixotropy, high adhesive content and low oil spill, and is suitable for the field of thermal management of optical modules.

This invention discloses a two-component self-healing polyurethane crack sealant based on dynamic disulfide bonds and its preparation method. The sealant comprises, by weight, component A containing 40-50 parts of polyol and 10-20 parts of diisocyanate, and component B containing 3-9 parts of a chain extender containing dynamic disulfide bonds, 0.5-3.5 parts of an auxiliary chain extender, 20-25 parts of filler, and 0.05-0.2 parts of catalyst; wherein the molecular weight of the polyol is 650-2000; the mass ratio of component A to component B is (1.5-2.5):1; and the catalyst is an organotin carboxylate catalyst. The sealant provided by this invention provides damage / repair functionality through the dynamic disulfide bond chain extender, while the auxiliary chain extender constructs stable hard segment crystals or hydrogen bond networks, providing initial strength and dimensional stability. These two components synergistically improve the self-healing properties and toughness of the prepared polyurethane crack sealant.

The invention provides a preparation method of mashed agaric and the mashed agaric. The preparation method comprises the following steps: performing enzymolysis on agaric by adopting a compound enzyme of cellulase and pectinase; after the enzymolysis product is circularly treated by a colloid mill, vitamin C, sodium alginate, modified starch and beta-cyclodextrin are added into the muddy matrix, and fiber refinement and component synergy are realized through two-stage high-pressure homogenization; the technical problems that in the prior art, due to physical cleaning and high-temperature treatment, the release efficiency of intracellular active substances is low, the nutrient loss rate is high, and a single additive system cannot synergistically improve the product stability, oxidation resistance and peculiar smell masking are solved. The product can be directly used as a food base material or additive in the fields of healthy food, special dietary food and the like.

This application relates to the field of adhesive technology, specifically to a one-component thermosetting addition-curing silicone adhesive for chip packaging and its preparation method. The one-component thermosetting addition-curing silicone adhesive for chip packaging comprises the following raw material components in parts by weight: 40-60 parts electronic-grade vinyl silicone oil, 5-15 parts vinyl MQ silicone resin, 1-3 parts colorant, 8-12 parts special-structure vinyl silicone oil, 3-8 parts end-side hydrogen-containing silicone oil, 0.1-0.15 parts platinum catalyst, 0.01-0.1 parts inhibitor, 1-3 parts self-made tackifier, and 35-75 parts composite filler; the composite filler includes graphene-coated alumina, silica, and carboxyl-functionalized boron nitride. The one-component thermosetting addition-curing silicone adhesive for chip packaging in this application improves upon the existing problems of low shear strength and poor thermal stability, resulting in a one-component thermosetting addition-curing silicone adhesive that balances shear strength, thermal stability, and long-term storage performance.

The invention provides a high-performance environment-friendly vertical plane single-component polyurethane waterproof coating and a preparation method of the high-performance environment-friendly vertical plane single-component polyurethane waterproof coating. The polyurethane waterproof coating is prepared from the following raw materials in parts by weight: 22 to 28 parts of modified castor oil polyol prepolymer, 4.5 to 7.5 parts of nano silicon-amine complexing agent, 4.8 to 5.8 parts of diphenylmethane diisocyanate, 3.2 to 4.8 parts of tri-n-butyl citrate, 1.0 to 1.8 parts of nano zinc oxide dispersion liquid, 18 to 24 parts of ground calcium carbonate, 5 to 8 parts of wollastonite fiber, 3 to 5 parts of hydroxyl-terminated polybutadiene, 0.04 to 0.06 part of organic bismuth catalyst and 0.2 to 0.4 part of polysiloxane defoaming agent. 8 to 12 parts of propylene glycol methyl ether acetate, 0.05 to 0.15 part of a titanate coupling agent and 0.1 to 0.2 part of an antioxidant. Through the synergistic effect of all the components, the waterproof coating has good mechanical properties, anti-sagging performance, aging resistance and low-temperature adaptability, and meanwhile the stability of the coating forming process and the final use reliability are guaranteed.

The invention relates to the technical field of polyester resin materials, and discloses a processing technology of flame-retardant color-changing unsaturated polyester resin, which comprises the following steps: 1, preparing an unsaturated polyester resin base material, 2, blending powder materials, namely blending flame-retardant aluminum hydroxide powder, fumed silica, photochromic glass micro powder and a release agent, and 3, blending the flame-retardant color-changing unsaturated polyester resin base material and the flame-retardant color-changing unsaturated polyester resin base material to obtain the flame-retardant color-changing unsaturated polyester resin. Mixing: blending the unsaturated polyester resin base material prepared in the first step with the powder material prepared in the first step, adding chopped glass fibers while stirring, and then changing the stirring direction. The unsaturated polyester resin disclosed by the invention is good in thixotropy and curing effect, excellent in mechanical property, weather resistance, water resistance and corrosion resistance, capable of solving the problem of illumination in a building, capable of changing along with illumination change, capable of better meeting the illumination requirement in the building, relatively good in flame retardance and capable of remarkably improving the safety of the building.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

This application relates to an admixture for riprap concrete engineering, comprising at least the following components: a starch-dextrin retarder, an activator, a polycarboxylate thixotropic agent, and a water-reducing agent. The admixture is used to modify the workability and hardening properties of high self-compacting concrete. The mass percentages of each component are as follows: starch-dextrin retarder: 1.6%-3.5%; activator: 5.2%-21.3%; polycarboxylate thixotropic agent: 0.25%-0.90%; water-reducing agent: 75.2%-90.5%. Adding this admixture to high self-compacting concrete used in riprap concrete engineering can improve the workability of high self-compacting concrete, such as fluidity, thixotropy, and a longer initial setting time, while also providing good volume stability, good impermeability and frost resistance, and lower cement content, resulting in significant economic benefits.

The invention discloses fiber polymer titanium gypsum mortar and a preparation method thereof. The fiber polymer titanium gypsum mortar is prepared from the following raw materials in parts by weight: 40 to 60 parts of titanium gypsum, 40 to 60 parts of sand, 10 to 15 parts of alkaline additive, 0.5 to 1 part of sodium sulfate, 2 to 3 parts of quick lime, 0.1 to 3 parts of plant fiber, 1 to 2 parts of cellulose ether, 0.2 to 2 parts of water reducing agent, 1 to 5 parts of redispersible latex powder and 0.1 to 2 parts of retarder. The doped plant fiber raw material is wide in source, so that the impermeability and the crack resistance of the gypsum mortar are effectively improved, and meanwhile, the construction performance is improved. The titanium gypsum is only dried and does not need to be calcined, certain additives and plant fibers are added, the high-water-resistance gypsum mortar with the titanium gypsum as a main cementing material is obtained, an energy-saving and environment-friendly product with good mechanical properties is provided, and meanwhile the high-water-resistance gypsum mortar has the advantages of being low in production cost, wide in raw material source and good in water resistance.

The application discloses a kind of green silane anticorrosive waterproof materials and preparation method thereof, it is related to building material and coating technical field, the material is paste, it is prepared from the following mass fraction components: silane monomer 80-90 parts, water 10-20 parts, composite emulsifier 1-5 parts, nano-grade attapulgite 0.5-2 parts, alkyl glycoside APG 0810 0.5-3 parts.Composite emulsifier is compounded by imidazoline amphoteric surfactant, alkyl trimethyl betaine and cocamide propyl dimethylamine ethylene ketal according to 20:30:40.Realize that storage stability is excellent, VOC content is extremely low, facade construction does not flow and the like effect.The material of the application is green and environment-friendly, is suitable for industrial, civil building of concrete structure, seaport, concrete bridge component and different grade concrete base material protection.

The application discloses a kind of high anti-sputtering drainage asphalt mixture and preparation method thereof, it is related to bitumen technical field.The raw materials of asphalt mixture include matrix asphalt, styrene-butadiene-styrene block copolymer, butyronitrile rubber microsphere, carboxyl silicone oil, composite modified aggregate, composite additive, graphene oxide mixed solution, calcium lactate.The preparation method of asphalt mixture includes the steps of composite modified aggregate preparation, preparation of graphene oxide mixed solution, preparation of composite additive, and preparation of asphalt mixture.The drainage asphalt mixture prepared by the application has strong anti-sputtering performance, excellent drainage performance and good anti-rutting performance.

The invention belongs to the technical field of cement paste preparation, and particularly relates to a marine emergency abandoned well cement paste system and a preparation method thereof. The offshore emergency abandoned well cement slurry system comprises oil well cement, a reinforcing agent, a fluid loss agent, an anti-dispersing agent, a retarder, an anti-channeling agent, a thixotropic agent, a plugging agent, a defoaming agent and fresh water. The offshore emergency abandoned well cement slurry system has the following advantages that the system is not dispersed when encountering other fluids, and erosion and dilution of wellbore and formation fluids are effectively resisted; precise thickening can be achieved, and the requirements of complex well conditions are met; the cement mortar has the advantages of short transition time, high strength, compactness, no pore, good cementation quality with a wall surface, good anti-channeling effect, capability of plugging a 0.75 mm crack (the forward pressure difference is greater than or equal to 7MPa), and strong leakage prevention and plugging capability.