149results about How to "Aging resistance" patented technology

A fibrous structure is described for use in hygienic articles such as diapers, sanitary napkins, incontinence guards, wipes and the like, having one or more polar, silicon containing compounds bound to at least one portion of the surface of the fibrous structure by interaction between the surface and the silicon containing compounds. The fibrous structure exhibits a predetermined degree of hydrophilicity and adhesion properties which are substantially unaffected by wetting of the fibrous structure. Absorbent, hygienic and textile articles comprising such a fibrous structure are also described.

The invention discloses a dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy anticorrosive coating and a preparation method thereof. Compositions of the coating mainly comprise dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion, anticorrosive pigment and filler, pigment dispersing agent, a film forming aid, a water-based additive, a cross-linking curing agent and deionized water, wherein the dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion is prepared by the following steps: prepolymerizing a polyurethane hydrophilic branch; preparing a dendritic polyurethane intermediate product by adopting hyperbranched synthesis technology; inoculating organic-inorganic hybrid into a nano material by adopting a in-situ polymerization; and simultaneously grafting epoxy resin with hydroxyl; and the prepared emulsion is compounded with the anticorrosive pigment and filler and the like to prepare the anticorrosive coating. The anticorrosive coating radically solves the VOC pollution problem of solvent-type anticorrosive coating, and simultaneously solves a series of problems such as poor roughness, weatherability, ageing resistance, alkali resistance and solvent resistance of the conventional water-borne anticorrosive coating.

The invention relates to an asphalt waterproof paint for a building and a preparation method thereof, belonging to the technical field of chemical industry. The asphalt waterproof paint for a building comprises the following raw materials according to parts by weight: 20-25 parts of plasticizer, 6-8 parts of modifier, 25-30 parts of asphalt, 20-30 parts of filler, 4-6 parts of tackifier, 0.2-0.3 parts of crosslink coupling agent, and 0.3-0.5 parts of dispersing agent. The invention has the advantages of reasonable compound design, good intensity, safety, environmental protection and stable product quality, and is capable of adapting the climatic conditions at high and low temperatures.

The invention relates to the technical field of chemical pigment fabrication and discloses a high-temperature-resistant environment-friendly composite pigment and a production method thereof. Inorganic titanium yellow pigment carriers are enveloped with organic yellow pigments to form the composite pigment. The preparation method comprises processing titanium dioxide and nickel oxide into mixed-phase inorganic titanium yellow pigment carriers to be mixed with organic yellow pigments with negative charges, and performing enveloping treatment through positive and negative charge particle attraction action to achieve composition of organic and inorganic pigments. By nanometer fine processing, surface charges are increased, the envelop is dense, the structure force is large, the composition process is environmentally friendly, the composite pigment is non-toxic, the composite titanium yellow carriers can protect the sensitive organic pigments from ultraviolet attack like ultraviolet absorbers, and accordingly, the weather resistance and the light resistance of the pigment are improved greatly, and the pigment has the advantages of being environmentally friendly, weather resistant, light resistant, heat resistant, anti-ageing, bright in organic pigment color and high in tinting strength.

The invention relates to high-functionality polyester polyol and a preparation method thereof. The polyol is prepared from 400-450 parts of PTA oxidation residue, 180-210 parts of glycerol, 80-140 parts of diglycol, 20-30 parts of pentaerythritol, 50-90 parts of oleic acid and 1-2 parts of catalyst. The preparation method comprises the following steps of: extracting various raw materials according to the proportion, sending the raw materials into a reaction kettle, heating, stirring and introducing nitrogen gas; evaporating all water of the raw materials in the kettle; cooling after evaporating all water, and stopping the introduction of nitrogen gas; heating and vacuumizing the kettle to form high temperature and high vacuum; polymerizing all raw materials at high temperature and in high vacuum, and greatly increasing the molecular weight of polyester; and discharging to obtain the finished product after various indexes of the molecular weight of polyester are measured to reach specified values. The high-functionality polyester polyol has the advantages of high wear resistance, strength, stability, heat resistance, aging resistance and the like.

One silicon-aluminate light conversion fluorescence material co-activated with halogen for white-light LED, which features a general formula as R_(3-a)M₃N₅CO₁₇:Re_a,X_b, where R is one or more selected from the oxide or hydroxide or oxalate or carbonate of La, Y, Lu, Gd, Tb, Nd, Ho elements, M is one or more selected from the carbonate, hydroxide, fluoride and or/chloride of Ca, Mg, Ba, Sr, Zn elements, C is the oxide of Si, Ge, N is one or more selected from the oxide or hydroxide or oxalate or carbonate or fluoride of B, Al, Ga and In elements, Re is the activator which is one or more selected from the oxide, hydroxide, oxalate or carbonate of Ce, Dy, Pr, Eu, Tm, Er, Sm, Yb, Sc, X is co-activator which is one or more selected from AlF₃, CaF₂, MgF₂, BaF₂, SrF₂ and ZnCl₂, as well as 0.001≦a≦0.5, 0.01≦b≦1.

Disclosed herein is a method for producing a transparent or opaque flooring sheet or a flooring using a styrene-butadiene copolymer resin (as a thermoplastic elastomer) by calendering. The flooring causes no problems associated with environmental hormones, and generates no halogen gases or endocrine disruptors, such as dioxin, during incineration. Further, the flooring can be regenerated and reused at any time, and exhibits superior stability upon installation and mounting and excellent elastic restoration after application of stress due to inherent flexibility of rubber.

The invention discloses a water-tolerant and ageing-resistant waterborne polyurethane coating which comprises the following components in parts by weight: 60-85 parts of waterborne fluorinated polyurethane-acrylate, 3-10 parts of epoxy resin, 2-10 parts of hydroxyl-terminated polybutadiene liquid rubber, 5-12 parts of nano calcium carbonate, 3-12 parts of hollow glass microspheres, 3-10 parts of nano titanium dioxide, 2-3 parts of butyl glycol ether, 1-3 parts of 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate), 20-45 parts of deionized water, 2-3.5 parts of a curing agent, 2-4.5 parts of a coupling agent, and 1-3.5 parts of an additive. The water-tolerant and ageing-resistant waterborne polyurethane coating disclosed by the invention is good in water tolerance and ageing resistance, short in curing time, and excellent in mechanical properties.

The invention discloses inorganic external wall coating. The inorganic out-wall coating comprises, by weight, 80-100 parts of potash water glass, 40-60 parts of talcum powder, 20-30 parts of kaolin, 10-20 parts of light calcium carbonate, 1-3 parts of sodium hexametaphosphate, 2-5 parts of sodium silicate, 1-3 parts of hydroxyethyl cellulose, 2-5 parts of sodium alkyl sulfate, 2-5 parts of bentonite, and 80-120 parts of water. Compared with the prior art, the inorganic external wall coating has the advantages of water, acid and alkali resistance, high-temperature resistance, ageing resistance, high surface rigidity, low film forming temperature, high suitability for external walls of buildings, and non-toxic, odourlessness and no pollution to the environment by taking water as dispersion medium.

The invention relates to a copolyamide comprising at least two units corresponding to the following general formula:

A/10,T

• • in which:
  • A is chosen from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine).(Cb (cyclo)aliphatic diacid), with a representing the number of carbon atoms of the diamine and b representing the number of carbon atoms of the diacid, a and b each being between 4 and 36;
  • 10,T denotes a unit obtained from the polycondensation of 1,10-decanediamine and terephthalic acid,
  • characterized in that it has a polydispersity index, denoted by Ip, of less than or equal to 3.5, measured by gel permeation chromatography.

The invention also relates to the process for preparing said copolyamide, a composition comprising this polyamide and also the use of this polyamide and of such a composition.

The invention belongs to the field of organic silicon materials, and particularly relates to blended rubber of silicone rubber and ethylene propylene diene monomer, and a preparation method thereof. The blend rubber of the silicone rubber and the ethylene propylene diene monomer is prepared from the following raw materials: raw methyl vinyl silicone rubber, raw ethylene propylene diene monomer, fumed silica, hydroxyl silicone oil, hexamethyl disilazane, dimethyldimethoxysilane, a silane coupling agent, methyl-terminated hydrogen-containing silicone oil, distilled water, zinc oxide, cerium oxide, calcium stearate, an accelerator, dicumyl peroxide, sulfur and auxiliary cross-linking agent. The silicone rubber and the ethylene propylene diene monomer in the blend rubber are good in compatibility, and the blend rubber has good mechanical properties and certain aging resistance.

The invention relates to a heating system integrating far-infrared heating and ohmic resistance heating and further relates to an electric heating system. The electric heating system comprises electric heating cloth, two copper foils and a battery pack, wherein the two copper foils are adhered at two ends of the electric heating cloth, the battery pack is connected with the copper foils, two electrodes of the battery pack are connected with the two copper foils respectively, and the battery pack consists of a lithium ion battery with a temperature control switch. The macromolecule electric heating cloth has healthcare function and heating and warming functions and is fast in heating, uniform in heat radiation, high in electric heating transfer rate, resistant to heat, corrosion and ageing and the like.

The invention discloses an environmentally-friendly tile binder, and a preparation method and a use method thereof. The environmentally-friendly tile binder comprises, by weight, 70-85% of an organosilicone emulsion, 10-30% of polymer resin, 1.5-3.5% of a silane coupling agent, 0.1-0.3% of a mildew inhibitor, 0.2% of a wetting agent, 0.5-1.5% of an antifreeze agent and 0.1-0.3% of a defoaming agent. The tile binder has the advantages of excellent adhesion, high mechanical stability, good water and weather resistance, low VOC and no environmental pollution problem, is an environmentally-friendly binder, and can be used in large buildings, railway engineering, road and bridge engineering and pipeline engineering.

The invention provides a high-performance polyurea damping material, and belongs to the technical field of damping materials. The material is composed of a component A and a component B. The componentA is an isocyanate-terminated prepolymer, and is formed by reacting polyisocyanate, polyol and a reactive liquid flame retardant, and the -NCO content of the component A is 12-16%; the component B isformed by mixing a steric hindrance chain extender, amine-terminated polyether, polyhydric alcohol, a dispersing agent, a defoaming agent, an ultrafine powder flame retardant, a coupling agent, a weather-proof additive, a catalyst, a flaky functional filler, a water removal agent and color paste; and the isocyanate index alpha value of the component A and the component B is 0.9-1.1. The inventionfurther provides a preparation method of the high-performance polyurea damping material. The high-performance polyurea damping material provided by the invention has very excellent mechanical properties and very good damping performance, also has relatively good flame retardance, water resistance, liquid medium resistance, corrosion resistance, mold resistance and aging resistance, and is easy toconstruct, safe, environment-friendly and wide in application range.

The invention relates to a phosphate/polyurethane modified waterborne alkyd anticorrosive coating. The coating is composed of phosphate/polyurethane modified waterborne alkyd resin, a cosolvent, a filler, an antirust pigment, an auxiliary agent and deionized water, wherein the phosphate/polyurethane modified waterborne alkyd resin is prepared by performing a reaction on vegetable oil fatty acid, isophthalic acid, an organic acid anhydride, a diol, a branched-chain polyol, dimethylolpropionic acid, alkyl acrylate phosphate, polyisocyanate and a neutralizer. The phosphate/polyurethane modified waterborne alkyd anticorrosive coating provided by the invention has a phosphate group and a metal substrate, forms a compact phosphating film, thereby improving water resistance and rust resistance ofa coating film; and the coating is combined with the characteristics of polyurethane chemical resistance, aging resistance, flexibility and wear resistance, and the prepared phosphate/polyurethane modified waterborne alkyd anticorrosive coating has excellent adhesion, water resistance, flash rust resistance, chemical resistance, aging resistance, corrosion resistance and salt spray resistance.

The invention discloses a fluorine and silicon-containing polyurethane prepolymer-modified epoxy resin and a preparation method thereof. The preparation method comprises the following steps: firstly synthesizing an amino fluorosilicone oil-modified polyurethane prepolymer; and modifying the epoxy resin by using the polyurethane prepolymer. The epoxy resin has relatively good tensile strength and also has good heat stability, and the toughness is greatly improved. The invention provides the preparation method of the fluorine and silicon-containing polyurethane prepolymer-modified epoxy resin. By adopting a simple solution reaction, the preparation process is simple and the method is easy to popularize and apply.