407results about How to "Strong cohesion" patented technology

The invention discloses a preparation method of hyperbranched ternary polymerization organic silicon. The preparation method comprises the following steps: preparing allyl polyoxyethylene glycidyl ether; preparing epoxy-terminated polyether block siloxane; preparing polyether/epoxy block silicone oil; preparing hyperbranched ternary polymerization organic silicon. According to the preparation method, a hyperbranched polymer and linear polyether amino block organic silicon are bonded together to research a novel organic silicon softener with a novel modified organic silicon chemical structure, and a synthesized hyperbranched matter is capable of enhancing the cohesive force among fibers and endowing a fabric with soft, plump and washable hand feel, high in molecular mass and low in viscosity and has much hydrophilic groups; the problem that emulsion of traditional amino modified silicon oil is easily broken is solved, the product has self-emulsifying property in water and is good in emulsion stability; the yellowing property is reduced, and the hydrophily is enhanced; a processed fabric is good in hydrophily and low in yellowing property and is bonded with fabric by virtue of chemical bonds, so that the washability is improved, and the fabric has a flexible effect of amino silicon oil.

The invention discloses an ultra-thin polyester double-sided adhesive tape comprising a polyester thin film layer and two glue layers formed by glue coated on front and back sides of the polyester thin film. The thickness of the polyester thin film is 0.001-0.0012mm. The thickness of the glue layer is 0.002mm. Therefore, the thickness of the double-sided adhesive tape is only 0.005mm, such that electronic product development trends of thin and light can be satisfied. The total thickness of adhesive is 0.004mm, such that the tape has ultra-low thermal resistance, and heat generated by electrical components can be conducted in time. Therefore, electrical component damage caused by long-term working under high temperature is avoided. Also, the invention discloses a formula for the glue used in the ultra-thin polyester double-sided adhesive tape. The glue comprises the raw materials of, by weight, 100 parts of acrylate prepolymer resin, 0.5-3 parts of a curing agent, and 100-200 parts of ethyl acetate. With the glue, a single side thickness is 0.002mm, and high adhesive performance can be provided.

A composite structure includes a first layer, a support layer, and a urethane acrylate layer disposed between the first layer and the support layer. The first layer is a show surface of the composite structure. The urethane acrylate layer includes a urethane acrylate composition that includes a urethane acrylate adduct. The urethane acrylate adduct is the reaction product of an isocyanate component and a stoichiometric excess of a functionalized acrylate component. The isocyanate component has at least two isocyanate groups. The functionalized acrylate component has at least one isocyanate-reactive functional group that is reactive with at least one of the isocyanate groups for forming the urethane acrylate adduct. The resulting urethane acrylate composition is sufficiently low in viscosity for many processing applications, and the urethane acrylate layer including the urethane acrylate composition exhibits sufficient adhesion to the first layer and support layer.

Epoxy cement group road nonskid paint consists of three components, namely epoxy latex, a curing agent and powder materials. The curing agent is prepared from triethylene triamine or triethylene tetramine and versamid resin which are mixed. The powder materials consist of silicate cement, quartz sand and a water reducing agent. The invention also discloses a preparation method for the epoxy cement group road nonskid paint. The epoxy cement group road nonskid paint saves resources with healthfulness, environmental friendliness, safety and convenience during use.

The invention discloses a simple-process environment-friendly carbon/carbon composite heating element and a production process thereof, which is characterized in that the heating element is prepared by making blank from carbon fibers, densifying, purifying, machining and purifying; the heating element is simple in process; as a net body formed by fluffy needle-like carbon fibers is adopted in the process of making the blank, a quasi-3D prefabricated part is easier to obtain in a needling process; the carbon fibers inside the prefabricated part are crisscrossed, strong in cohesive force, free from delamination and stable in structure; meanwhile, the prefabricated part is small in pore, which facilitates the acceleration of the subsequent densifying process; the heating element blank prepared through chemical vapor deposition densification consists of the carbon fibers and a carbon matrix, wherein the carbon matrix is formed by pyrolytic carbon obtained through a high temperature pyrolysis mode, which is high in purity; and a carbon/carbon composite product with the ash content less than 180 ppm can be obtained only through high-temperature purification in a vacuum or protective atmosphere, thereby saving energy and protecting environment.

The utility model discloses a logging system of gas well oil testing, adopting a C/S system architecture (client side and server side are separately designed). The system architecture comprises a client side and a server side. The client side comprises a data acquisition subsystem and a data processing subsystem; the server side comprises a database subsystem. The system implements the separation of the data and the processing. The system has the advantages of high degree of automation by the module integration replacing hand data acquisition, accurate and credible results of data processing, short cycle of data acquisition, multiple acquisition parameters and high efficiency of simulation monitor which reflects the reality of the system.

The invention relates to a floating body material, in particular to a floating body material and a manufacturing technique thereof for an observation platform at the bottom of the sea. The floating body material comprises bisphenol A type epoxy resin, modified acrylonitrile-butadiene rubber latex, hollow glass microsphere, polyether amine, gamma-glycidoxypropyltrimethoxysilane, a silane coupling agent and polyvinyl alcohol fiber; and the floating body material comprises the following components in parts by weight: 100 parts of bisphenol A type epoxy resin, 0-10 parts of modified acrylonitrile-butadiene rubber latex, 12-18 parts of hollow glass microsphere, 15-20 parts of polyether amine, 2-3 parts of gamma-glycidoxypropyltrimethoxysilane, 1-2 parts of silane coupling agent and 2 parts of polyvinyl alcohol fiber. The invention provides the floating body material and the manufacturing technique thereof for the observation platform at the bottom of the sea; and the observation platform adopting the floating body material can be soaked in the seawater for use in a long term.

The invention relates to a medical polyacrylate pressure-sensitive adhesive with high adhesion performance. The medical polyacrylate pressure-sensitive adhesive comprises soft monomers, hard monomers, functional monomers, initiators, cross-linking agents and solvents. The glass-transition temperature of the soft monomers ranges from -65 DEG C to -60 DEG C. The cross-linking agents are isocyanate-group-containing compounds generated through the reaction between polyisocyanates and polyhydroxy compounds. The weight-average molecular weight of the pressure-sensitive adhesive ranges from 80*10<4> g/mol to 140*10<4> g/mol. The molecular weight distribution of the pressure-sensitive adhesive ranges from 10 to 25. In the preparing process of the pressure-sensitive adhesive, temperature and the reaction sequence and the adding quantity of the reaction materials are gradually controlled, and the product with the high molecular weight and the wide molecular weight distribution is obtained. The product can be used for the medical and health field.

The invention discloses a novel thermal insulation material, and the composition comprises expanded perlite, cement, gypsum powder, fibers, redispersible rubber powder, casein glue, and the like. The thermal insulation material has the advantages of high strength, aging resistance, excellent thermal insulation effect, energy conservation, environmental protection, fire protection, sound insulation, low cost, convenient use, and the like. The novel thermal insulation material can be directly applied on buildings, containers, pipelines, reactors, household appliances and the like through a plurality of construction methods, thereby achieving the effects of thermal insulation and energy conservation.

The invention discloses a sewage treatment system for river ways in a city. The system comprises a sewage pond, a stop net for filtering away suspension and chemical matter in sewage, an adjusting pond, a concrete pond, a settling pond, an anaerobic pond, an aerobic pond, an anoxia pond and a filter device. Microbial flora is added into the anaerobic pond. Nitrosomas and nitromonas are added into the aerobic pond. Denitrification bacteria are added into the anoxia pond. A filter layer, an adsorption layer, a filler layer and a heavy metal absorption layer are sequentially arranged in the filter device from bottom to top. The top of the filter device is connected with a micro-ecological filter pond through a drain pipe. By means of the sewage treatment system and a technology for river ways in the city, water body conditions are analyzed, and ecological regulation and control are achieved; by means of the method of combining exogenous pollution control, endogenous pollution control and micro-ecological system repair, the pollution problem of river ways in the city can be effectively solved, and a good pollution treatment effect is achieved. The invention further discloses the sewage treatment technology for river ways in the city.

The purpose of the present invention is to provide a photocurable translucent composition for an adhesive sheet which will not corrode the electroconductive layer of a translucent electroconductive film even when bonded directly onto the surface of the electroconductive layer, and which offers excellent whitening resistance and foaming resistance in a high-temperature, high-humidity environment when used to bond a translucent resin sheet such as an acrylic sheet or a polycarbonate sheet, as well as to provide an adhesive sheet. The present invention pertains to a photocurable translucent composition for an adhesive sheet, the composition being of high molecular weight, having (meth)acryloyl groups introduced thereto, and being a formulation of a hydrogenated 1,2-polybutadiene-based acrylate compound or hydrogenated isoprene-based compound, a (meth)acrylic acid ester having a hydroxyl group, a polymerizable monomer other than the (meth)acrylic acid ester having a hydroxyl group, an alicyclic tackifying resin having a softening point in a specific range, and a photopolymerization initiator.

The invention belongs to the field of chemical detection and particularly relates to test paper for rapidly detecting nitrite and a preparation method and application of the test paper. According preparation method, the test paper for rapidly detecting the nitrite is prepared by taking a filter paper body as a carrier, a p-aminobenzene sulfonic acid solution and an N-1-naphthyl ethylenediamine hydrochloride as color developing agents, as well as an ethanol water solution of polyvinyl alcohol as a surface protectant and can be used for detecting the content of the nitrite. The test paper is low in cost, convenient and rapid to use and has long-term stability.

The invention provides a water-based pressure sensitive adhesive as well as a preparation method and application thereof. The water-based pressure sensitive adhesive is mainly composed of the following raw materials in parts by weight: 40-60 parts of acrylate emulsion, 30-60 parts of castor oil-based polyurethane prepolymer and 0-10 parts of a blocked polyurethane curing agent. The preparation method comprises the following steps: sequentially adding the acrylate emulsion, the castor oil-based polyurethane prepolymer and the blocked polyurethane curing agent into a reactor according to a formula ratio, heating to 25-40 DEG C, reacting for 0.5-1 h and filtering so as to obtain the water-based pressure sensitive adhesive. The water-based pressure sensitive adhesive is good in adaptability to a substrate surface and good in weather resistance and can be used under room temperature conditions.

A polyimide fiber with kidney-shaped section and a preparation method thereof belong to the technical field of polyimide fibers. The preparation method includes: utilizing polyamide acid (PAA) solution synthesized by aromatic dianhydride and aromatic diamine to perform the wet spinning process by the aid of circular spinneret holes, adjusting spinning conditions including spinneret speed, composition, proportion and temperature of coagulating bath, the length of hydrazine and the like to obtain a PAA as-formed fiber with kidney-shaped section, then washing and drying the PAA as-formed fiber, cyclizing and drafting the same at high temperature stage by stage, and winding and the like, finally obtaining the polyimide (PI) fiber with the kidney-shaped section. The preparation method of the polyimide fiber with the kidney-shaped section has the advantages of simplicity in spinneret hole design and processing, easiness in control of spinning process, high preparation efficiency, low cost for raw materials, low energy consumption and the like and can be used for large-scale industrialized production.

The invention relates to an acrylic ester electrostatic flocking binding agent and a preparation method thereof. The acrylic ester electrostatic flocking binding agent is a polymer emulsion which is prepared from the raw materials: polyoxyethylene dodecyl alcohol (50), sodium dodecyl sulfate, itaconic acid, N-hydroxymethyl acrylamide, acyclic acid, butyl acrylate, 2-ethylhexyl acrylate, styrene, gamma-methacryloxy propyl trimethoxyl silan, epoxy resin E-44, adipic acid dihydrazide, sodium acetate, ammonium persulfate and deionized water through seeded emulsion polymerization. The acrylic ester electrostatic flocking binding agent is an epoxy resin and organic silicon resin jointly-modified acrylic ester electrostatic flocking binding agent. The product has the advantages of flexibility, cold endurance, weather resistance and thermosetting stability and particularly has prominent water resistance and adhesive force.

The invention relates to a method for distressed rapid dyeing of a wool sweater. The method comprises the following steps: (1) wax-dipping: weighing liquid Evo wax with the amount of 1.05-1.15 times of the wool sweater fabric weight, at the room temperature, soaking the wool sweater in the wax liquid, and repeatedly kneading and pressing until being uniform; and carrying out low temperature drying or natural drying; (2) dyeing: putting the wool sweater fabric after wax-dipping pretreatment and drying into a prepared dyeing bath; heating up to 75-80 DEG C at a speed of 3 DEG C/min, and holding for 5-10 min to achieve dyeing; (3) carrying out color fixation: after dyeing, adding a cationic color-fixing agent for color fixation for 5 min, and then taking out the fabric; (4) cleaning: washing with a non-ionic surfactant for 15 min at the temperature of 70 DEG C; and (5) drying. After the wool sweater is dyed by the rapid dyeing process, a distressed effect of distinct depth levels and uniform overall appearance appears. In addition, compared with a conventional dyeing process, the dyeing time is shortened by 60%-70%, and the color fastness is at the level of 2.5 or above.