40results about How to "Low weight loss" patented technology

The invention is based on the discovery that adhesive compositions containing certain low-viscosity, mono-ethylenically unsaturated monomers have surprisingly good cure parameters, resulting in very little weight loss upon cure. Many of these monofunctional monomers used alone or in combination with other monofunctional monomers described herein have high glass transition temperatures when cured. Moreover, since these monomers are monofunctional the crosslink density of the adhesive composition does not increase (relative to multi-functional monomers), which in turns results in lower stress, lower modulus adhesive compositions. As such, these monomers are useful in a variety of thermoset adhesive compositions, such as for example, die attach adhesive compositions.

The present invention discloses composition and methods for reducing the weight loss and/or preserving the natural gloss of post-harvest edible plant matter. In particular, the methods comprising applying to the surface of the plant matter a composition comprising an edible wax having a melting temperature below 70° C.; a hydrocolloid; a fatty acid; an emulsifier; and water, wherein said edible wax is present in a weight percent ranging from about 10% to about 25% of the total weight of the composition.

The invention discloses a super-hydrophobic conformal coating, and a preparation method and an application method thereof. The super-hydrophobic conformal coating is composed of, by mass, 5 to 40% of fluorocarbon resin, 10 to 30% of fluorosilicon resin, 20 to 60% of an organic solvent, 10 to 30% of silica, 1 to 10% of titanium dioxide, 1 to 10% of polytetrafluoroethylene, 0.1 to 0.5% of a catalyst, and 1 to 5% of a curing agent. According to the preparation method, the ingredients are subjected to stirring mixing and ultrasonic uniform dispersion in sequence at a certain ratio. According to the application method, the super-hydrophobic conformal coating is subjected to direct spraying or brush coating onto the surfaces of insulators and outdoor electric power facilities; the thickness of obtained coating layers is controlled to be 0.1 to 0.5mm preferably; and 20 to 60min of normal temperature curing is needed. The preparation method is simple; the cost is low; the super-hydrophobic conformal coating is convenient to use, possesses extremely high hydrophobicity and weatherability, is capable of realizing self cleaning, is a nanometer composite hybrid normal-temperature cured fluorocarbon coating, is capable of realizing stain prevention, pollution flashover prevention, and corrosion prevention of insulators and outdoor electric power facilities effectively, and is promising in application prospect.

The invention relates to an anti-corrosion bamboo-wood composite board and a preparation method thereof. The preparation method of the anti-corrosion bamboo-wood composite board comprises the following steps: firstly preparing anti-corrosion bamboo strips and heat-treated wood; next, respectively assembling and compressing the anti-corrosion bamboo strips and the heat-treated wood into anti-corrosion bamboo wood and a heat-treated sheet material; and then carrying out assembling and hot compression on the anti-corrosion bamboo wood and the heat-treated sheet material to obtain the anti-corrosion bamboo-wood composite board. The bamboo-wood composite board prepared by the method of the invention has excellent corrosion resistance which reaches the corrosion resisting level specified in national standard GB/T13942.1-1992 Method for Laboratory Test of Natural Decay Resistance of Woods, and also has very high surface abrasion resistance and high mechanical strength which reach the national standards in GB/T 18103-2000 national composite floor.

The invention is based on the discovery that adhesive compositions containing certain low-viscosity, mono-ethylenically unsaturated monomers have surprisingly good cure parameters, resulting in very little weight loss upon cure. Many of these monofunctional monomers used alone or in combination with other monofunctional monomers described herein have high glass transition temperatures when cured. Moreover, since these monomers are monofunctional the crosslink density of the adhesive composition does not increase (relative to multi-functional monomers), which in turns results in lower stress, lower modulus adhesive compositions. As such, these monomers are useful in a variety of thermoset adhesive compositions, such as for example, die attach adhesive compositions.

The invention claims a functional type wood plastic composite (WPC) with a light core-shell structure. HDPE (high-density polyethylene) or HDPE/PP (Propene Polymer) blend is taken as a substrate for the WPC. Wood fiber accounting for 0-45% of the substrate by weight is added into the substrate to obtain a mixed plastic wood material; then, a chemical foaming agent accounting for 10-20% of the mixed plastic wood material by weight and a blowing promoter accounting for 0-5% of the mixed plastic wood material by weight are added and taken as a sandwich layer material; wood fibre accounting for 0-20% of the HDPE by weight and stearic acid modified nanometer CaCO3 or talcum powder accounting for 0-30% of the HDPE by weight are added to form a surface shell layer material; the sandwitch layer material and the surface shell layer material obtained in the previous steps are respectively fused to form material flows through different extruders, the material flows converge and are extruded in the converging chamber of a mould to form the functional type WPC with the light nuclear shell structure. The functional type WPC with the light nuclear shell structure has corrosion prevention, antibiosis, good mechanical intensity, rigidity, hardness and wear-resisting property.

The present invention relates to ester mixtures comprising trimethylolalkane esters of aromatic carboxylic acids, trimethylolalkane esters of aliphatic carboxylic acids and trimethylolalkane esters both of aromatic and aliphatic carboxylic acids, to a process for their preparation, and to their use as plasticizers for polymers.

A polysilazane composition, formulated from a vinyl silazane and an organometallic accelerator, and associated methods thereof.

The present invention provides thermosetting aqueous binder compositions comprising one or more reducing sugar, one or more diprimary diamine or poly(primary amine), and from 7 to 45 wt. %, based on total solids, of one or more polysaccharide having a dextrose equivalent (DE) value of from 5 to 30. The compositions provide treated articles, such as fiberglass mat. The binders provide articles having a dramatically reduced binder weight loss upon cure and a reduction in cure energy needed to achieve early dry strength.

The invention discloses a reactive polyurethane sealant composition and a preparation method thereof, which consist of high molecular polyol, polyisocyanate, catalyst, plasticizer, antioxidant, modified epoxy glue and modified biomass material. Compared with the prior art, the reactive polyurethane sealant composition of the present invention uses the introduced epoxy glue to modify the polyurethane glue. In addition to retaining the original characteristics, the cured product has a dense structure and high crosslinking density; The introduction of modified biological materials, through the surface treatment of agricultural and forestry biological materials with amino silane coupling agents after ashing, effectively improves the comprehensive properties of polyurethane sealants such as tensile strength, elongation at break and tear strength. ; The preparation method of the reactive polyurethane sealant composition of the present invention is simple to operate, the reaction is controllable, and the safety factor is high.

The invention provides a chicken slaughtering and processing method for laying hens and a chicken slaughtering and processing system. The chicken slaughtering and processing method for laying hens includes: taking out live chickens from the farm cage, putting them into a plastic box, moving the plastic box, and loading it on a live chicken transport vehicle; mooring the above plastic box to a blue light with blocked external light Atmospheric mooring equipment; hanging the chickens contained in the above-mentioned plastic boxes on the hooks of the conveyor; passing the chickens through a stun machine, thereby being stunned by electricity with a gradually increasing voltage; bleeding steps; implementing scalding and depilation; passing the chickens through mowing head machine to cut off the chicken neck; pass the chicken through a flame machine to burn the chicken fluff; pass the chicken through the eviscerator to remove the giblets; ankle cutting step; cool the chicken in cooling water; ripen the chicken in the ripening chamber ; moving the chickens on belts and screening by weight; and packing the chickens.

The invention provides corrosion-resistant silicon nitride ceramic as well as a preparation method and an application thereof, and belongs to the technical field of preparation of silicon nitride ceramic. The corrosion-resistant silicon nitride ceramic is prepared from the following raw materials in percentage by mass: 75-92% of silicon nitride powder; 2-10% of calcium hexaluminate powder; 3-15% of silicon carbide powder; 0.5-5% of chromium oxide powder; and 0.2-3% of silica powder. According to the invention, calcium hexaluminate is used as a main sintering aid; chromium oxide and silicon dioxide are used as auxiliary sintering aids, calcium hexaluminate has excellent corrosion resistance and can form a high-corrosion-resistance grain boundary phase in the sintering process, so that the corrosion resistance of the silicon nitride ceramic is improved, and the obtained silicon nitride ceramic has a low weight reduction rate and a low bending strength reduction rate in an acidic or alkaline environment.

The invention relates to a preparing method for a lightning prevention and ablation resisting alloy and belongs to the technical field of preparing of alloys. The preparing method includes the steps that firstly, nickel, tungsten and other metal are smashed and screened, and mixed powder is obtained; then, graphite is treated, and expanded graphite is obtained, wherein the graphite has good lightning prevention and arc ablation resistance properties; after the graphite is oxidized, active sites are led into the graphite through the microbial action, and then rare earth metal resistant to arc ablation is led into the graphite through in-situ deposition; and then alloy powder is pressed into a blank, the expansion graphite is wrapped at the outer portion of the alloy through the polydopamine action, a lightning prevention and arc ablation resisting film is formed after pressing to protect the alloy, and therefore the lightning prevention and ablation resisting alloy is obtained. The prepared lightning prevention and ablation resisting alloy has the relatively high arc ablation resisting capability and is not likely to be burnt out during arc combustion, the service life of the alloy is prolonged, and a wide application prospect is achieved.

The invention belongs to the field of wood modification treatment, and particularly relates to a flame retardant wood modifier, comprising the following raw materials by weight: dicyandiamide, boric acid, borax, triethanolamine, urea, ammonium persulfate, ammonium bicarbonate, polyphosphate, methyl methacrylate, phosphoric acid, polyethylene glycol, polyoxyethylene alkyl ether, sodium dodecyl sulfate, 1,2,3,4-butane tetracarboxylic acid and water; and a preparation method of the modifier. Catalytic reaction effects of the urea and the phosphoric acid are improved through adding the ammonium persulfate and the ammonium bicarbonate. Wood flame retardance and corrosion resistance in a wood modification process are improved through adding the polyethylene glycol, the ammonium bicarbonate, thedicyandiamide and the polyphosphate. Wood dimension stability in a wood modification process can be improved through adding the polyoxyethylene alkyl ether, the methyl methacrylate and other related components.

Administration of a therapeutically effective amount of 3,5-diiodothyropropionic acid stimulates weight loss in patients, lowers triglyceride levels and reduces risk of death or progression of coronary heart disease in patients with metabolic syndrome.

A resin composition comprises 100 parts by weight of epoxy resin; 2 to 50 parts by weight of carboxyl-containing butadiene acrylonitrile resin; 1 to 40 parts by weight of phosphazene; and 1 to 8 parts by weight of acrylic triblock copolymer. The resin composition may be made into various articles, such as prepregs, laminates, printed circuit boards or rigid-flex boards, and meets one, more or all of the following properties: high yield rate in solder pad fall-off test at high temperature, low dust weight loss, low stickiness, high thermal resistance, high peel strength to copper foil, and high bonding strength to polyimide layer.