162results about How to "Improve sag resistance" patented technology

The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g / 10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g / 10 min.

The invention relates to machine-spraying-type plastering gypsum and a preparation technology thereof and belongs to the technical field of building materials. The machine-spraying-type plastering gypsum is characterized by being prepared from the following raw materials: 200-400 parts of gypsum, 10-60 parts of cement, 520-650 parts of fine aggregate, 80-160 parts of heavy calcium powder, 2-4 parts of redispersible emulsion powder, 2-4 parts of hydroxypropyl methyl cellulose ether, 0.15-0.25 part of an air entraining agent, 5-10 parts of expanded perlite, 0.3-0.8 part of a gypsum retarder and 200-300 parts of water. The machine-spraying-type plastering gypsum is applicable to being directly sprayed to a wall surface by adopting a mortar spraying machine, both time and labour are saved, construction efficiency can be improved, and cost is reduced; bonding performance with the wall surface is good, rebounce is not caused, anti-sagging performance is good, both bonding strength and compressive strength can meet requirements, and cracking of a wall body can be reduced; and usage amount of gypsum is low, and cost can be effectively reduced.

The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g / 10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g / 10 min.

The invention relates to a high-sinking-resistance transparent primer and a preparation method thereof. The high-sinking-resistance transparent primer is particularly suitable for application on a wood substrate and especially suitable for application on a substrate with deeper wood-grain guide tubes. The primer is prepared from a main paint, a curing agent and a diluter in a mass ratio of 1:0.5:(0.3-1):0.5:0.7. The main paint is prepared from the following raw materials in parts by mass: 55-70 parts of small-oil-length alkyd resin, 5-15 parts of castor oil modified alkyd resin, 3-10 parts of zinc stearate, 0-30 parts of talcum powder, 0.5-1 part of anti-settling agent, 0.3-1 part of defoamer, 0.2-0.5 part of leveling agent, 0.1-0.5 part of wetting and dispersing agent, 0.1-0.3 part of drier and 5-15 parts of environment-friendly mixed solvent. The primer can be well combined with the substrate after being applied, and has excellent properties in the aspect of wood grain / guide tube filling. After the primer is placed for a long time, the paint film of the finish paint can not shrink, and can not generate the phenomenon of sinking.

The invention is an adhesive composition comprising: a) an isocyanate functional polyether base prepolymers having a z molecular weight average (Mz) of about 10,000 to about 80,000 g / mole; a carbon black having an average oil absorption number of at least about 80 to at most about 400 cubic centimeters of dibutyl phthalate per 100 grams of the carbon black; (c) reactive silicon in an amount from about 0.001% to about 10% by weight of the adhesive composition; and (d) one or more catalysts for the reaction of isocyanate with hydroxyl groups. The adhesive compositions of the invention surprisingly may have improved sag performance (i.e., decreased sag) when heated, while also making them more easily pumped.

The invention is an adhesive composition comprising: a) an isocyanate functional polyether base prepolymers having a z molecular weight average (Mz) of about 10,000 to about 80,000 g / mole; a carbon black having an average oil absorption number of at least about 80 to at most about 400 cubic centimeters of dibutyl phthalate per 100 grams of the carbon black; (c) reactive silicon in an amount from about 0.001% to about 10% by weight of the adhesive composition; and (d) one or more catalysts for the reaction of isocyanate with hydroxyl groups. The adhesive compositions of the invention surprisingly may have improved sag performance (i.e., decreased sag) when heated, while also making them more easily pumped.

The invention discloses quick-dry solvent-free anti-sagging polyurethane water-proof paint. Raw materials of the quick-dry solvent-free anti-sagging polyurethane water-proof paint include polyurethaneprepolymer, a plasticizer, a dispersion agent, filler, a dehydrating agent, a catalyst, a defoaming agent and an oxazolidine reactive diluent, wherein the catalyst is prepared from pentamethyldipropylenetriamine, tetramethylethylenediamine and 1,8-diazabicyclo(5.4.0)undec-7-ene; raw materials of the polyurethane prepolymer include polyether diol, polyether triol, isocyanate and a chain extender,and the polyurethane prepolymer is prepared from a method which comprises the following steps that 1, the raw materials of the polyurethane prepolymer are weighed, and the polyether diol and the isocyanate are subjected to reaction until the reaction is completed; 2, then the polyether triol is added for reaction until the reaction is completed; 3, then the chain extender is added for reaction toprepare the polyurethane prepolymer. A preparation method of the water-proof paint comprises the following steps that 1, the polyurethane prepolymer. Is prepared; 2, the prepared polyurethane prepolymer and the residual raw materials of the water-proof paint are mixed to obtain the water-proof paint. The quick-dry solvent-free anti-sagging polyurethane water-proof paint has the advantages of excellent film-forming speed, anti-sagging performance, low viscosity and the like at the same time.

The invention relates to a preparation method of an environment-friendly dry powder pointing agent taking slag powder as main raw materials, belonging to the technical field of building material preparation processes. The environment-friendly dry powder pointing agent comprises the raw materials in percentage by weight: 55-75 percent of slag powder, 2-10 percent of cement, 10-30 percent of calcite powder, 2-5 percent of re-dispersible emulsoid powder and 0.05-0.3 percent of thickening agent. The environment-friendly dry powder pointing agent has good caking property, good durability and high antiseepage grade, is not in contact with a tapestry brick, generates no cracks, and can effectively inhibit saltpetering. The invention widens a new approach for the resource utilization of the slag powder and has better social efficiency and economic benefit.

Provided texture paint is aqueous texture paint employing macromolecular synthetic resin emulsion and additives. By employing a strong-thixotropy alkali-swelling type thickener and cellulose ether for cooperative use, the texture paint is reasonable in thixotropy and relatively good in thickening property, storage property and construction property, and has no influence on water whitening resistance of the emulsion. After a high-viscosity auxiliary agent with water-retaining property replaces part of cellulose ether, the texture paint is high in viscosity, good in water-retaining property, no sand falls off during construction, the opening time is long, the scraping and the levelling are facilitated, and the use amount of the paint is substantially reduced. The addition of a thixotropy lubricant helps to improve the lubrication viscosity-reducing property, reduce construction resistance, improve sagging resistance, improve construction performances, prevent knife-adhering phenomenon from generating and prolong construction time.

A composite board comprising a core and a paper facer sheet adhesively laminated to one face of the core, the core including a mixture of perlite, binder, and cellulose fiber, the core being formed as a water slurry with said perlite, binder and cellulose fiber being uniformly distributed therein, the perlite being in an expanded state such that its particles include internal voids and exhibit a density of about 5 to about 15 pounds per cubic foot and being present in sufficient quantity to occupy in bulk at least 50% of the volume of the core, on a weight basis, the perlite and cellulose fiber combined forming at least 25% of the weight of the core. The paper facer being laminated to the core with a water-based adhesive applied across substantially the full area of the facer, both the compressive strength of the perlite and tensile strength of the cellulose fiber being utilized by operation of the binder such that a relatively high nail-pull capacity in comparison to the weight of the composite board is achieved and sag resistance is imparted to the composite board when it is used for ceiling tile.

The present invention provides a system for monitoring and controlling an industrial paint operation, where a five-sided intermodal shipping container is painted with a water-based coating composition. The system includes a paint application system, a drying system with a chamber configured to handle one or more intermodal shipping containers, and modules for monitoring and controlling the application of paint and the drying of the applied paint.

The invention discloses a novel wall heat-insulating material and a preparation process thereof. The novel wall heat-insulating material mainly comprises the following components in parts by weight: 22 to 42 parts of cement, 14 to 23 parts of polyvinyl chloride resin powder, 13 to 26 parts of modified plant straw powder, 3 to 10 parts of dispersible latex powder, 2 to 8 parts of hydroxypropyl methyl cellulose, 1.3 to 6.5 parts of glass bead, 0.3 to 2.2 parts of water-reducing agent, 0.5 to 3.8 parts of coagulation accelerator and 0.2 to 1.4 parts of curing agent. The novel wall heat-insulatingmaterial provided by the invention has the advantages of light weight, high strength, high heat-insulating property, low water-absorbing rate, sound absorption, shock prevention and the like; furthermore, the preparation method is simple and suitable for large-scale production and application.