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176results about How to "Low water absorption" patented technology

Modified vitrification micro-bead thermal insulation mortar and preparation method thereof

The invention discloses a modified vitrified micro bubbles thermal insulation mortar and a preparation method thereof. The steps of the preparation method are as follows: (1) modifying low quality vitrified micro bubbles: organic silicon hydrophobic agent is diluted by water, and the volume ratio between the hydrophobic agent and the water is 1: 10-1: 80 and the diluted hydrophobic agent is sprayed uniformly on the low quality vitrified micro bubbles; (2) drying: the vitrified micro bubbles treated by the hydrophobic agent is put into an oven for drying; (3) compounding the thermal insulation mortar: the master batch of the mortar and the modified vitrified micro bubbles are stirred uniformly according to the weight ratio 1:2-2:1, thus obtaining the modified vitrified micro bubbles thermal insulation mortar. The method can not only decrease the water absorption of the low quality vitrified micro bubbles but can also keep certain water-retaining rate; furthermore, the method also can decrease the thermal conductivity of the thermal insulation mortar and has simple production technique and obvious effect. The thermal conductivity of the thermal insulation mortar made by low quality vitrified micro bubbles not only meets the national quality standards, but also greatly reduces cost, thus being more easily to be popularized.
Owner:SOUTH CHINA UNIV OF TECH

Energy-saving self-heat-insulation ceramsite building block and its manufacturing method and forming mould

The invention relates to an energy-saving self-heat-insulation ceramsite building block and its manufacturing method and forming mould. The energy-saving self-heat-insulation ceramsite building block is made of, by weight, 35-50% of ceramsite, 20-29% of cement, 15-30% of coal ash, 0.5-1% of fibers, 2-5% of foaming agent, 0.3-0.5% of water reducing agent, 0.1-0.3% of waterproof agent and 0.2-0.5% of catalyst, wherein the volume of the ceramsite accounts for more than 80% of that of the whole building block. The manufacturing method of the building block includes steps of material selecting, metering, stirring, pouring, vibrating, steaming, tube drawing for demoulding, cutting forming and stacking for rest. The forming mould of the building block can be used for once forming of multiple medium-sized rectangular ceramsite building blocks, and each building block can be conveniently cut into standard small ceramsite building blocks. The energy-saving self-heat-insulation ceramsite building block is high in ceramsite content and has the advantages of light weight, warm retention, heat insulation, sound insulation, sound adsorption, low water adsorption, fire resistance, freezing resistance, quake proofing, corrosion resistance and the like.
Owner:NINGBO PINGHAI BUILDING MATERIALS

POSS/casting nylon 6 nano composite material and preparation method and application thereof

InactiveCN107011651ALow water absorptionImprove wear resistanceInterpenetrating polymer networkChemical Linkage
The invention discloses a POSS/casting nylon 6 nano composite material and preparation method and thereof. The preparation method comprises the following steps: adding POSS, water and an organic modifying agent in a kettle A containing caprolactam monomers, heating to the temperature of 70-85 DEG C, stirring for 0.5-2 hours, carrying out vacuumizing for 15-60 minutes, heating to the temperature of 130-140 DEG C, adding an initiator, and carrying out vacuumizing reaction for 15-30 minutes; heating a kettle B containing caprolactam monomers until the monomers are melted, carrying out vacuumizing, adding a catalyst after the monomers are totally melted, heating to the temperature of 130-140 DEG C, and carrying out vacuumizing for 10-15 minutes; and finally mixing the compound in the kettle A with the compound in the kettle B, pouring the mixture in a mold at the temperature of 150-170 DEG C for polymerization molding, and carrying out demolding after insulating for 10-60 minutes. By a frame structure of POSS and organic functional groups thereof, and a nylon molecular chain and POSS form an interpenetrating polymer network structure and are bonded chemically. The prepared nano composite material is low in water absorption, good in thermal stability, high in wear resistance and god in comprehensive property.
Owner:HUNAN UNIV OF TECH

Method for manufacturing natural-like stone ceramic tile with clear color and luster and boundary

ActiveCN101613198AStrong stain resistanceLow water absorptionCeramic shaping apparatusClaywaresBall clayMoisture
The invention relates to a method for manufacturing a natural-like stone ceramic tile with clear color and luster and boundary. The ceramic tile comprises the following main raw materials in percentage by weight: 10 to 15 percent of low-temperature porcelain powder, 10 to 20 percent of medium-temperature porcelain sand soil, 9 to 18 percent of high-temperature porcelain sand, 10 to 15 percent of washed black mud, 10 to 15 percent of albite powder, 5 to 10 percent of alumina porcelain sand, 10 to 20 percent of sodium porcelain sand, 5 to 18 percent of ball clay, 0.5 to 1 percent of liquefaclent and 0.5 to 1.5 percent of pigment; a process flow of the manufacturing method comprises : material selection, material burdening, ball milling, toning, pulverization, cloth pressing, drying, sintering, polishing, sorting, packaging and warehousing; a sprayed micron antifouling coating process is added between a cloth pressing process and a drying process; the cloth pressing process comprises: powder crushing, full automatic computer-controlled vertical blanking, dropping of line micropowder cloth in a mould, distribution of a base material, and pressing and molding; slurry comprises the following components in percentage by moisture mass: 34 to 36 percent of base material and 32 to 34 percent of ice-thoroughly material; and powder (the fineness is about 250-mesh sieve ) comprises the following components in percentage by weight: 0.8 to 1.0 percent of base material and 0 percent of ice-thoroughly material.
Owner:广东能强陶瓷有限公司

A kind of production method of phenolic foam wall insulation material

The invention discloses a production method of a phenolic foam wall insulation material. The production method comprises (1) preparing raw materials of phenol, paraformaldehyde for industrial purposes, sodium hydroxide, acrylamide and water, (2) putting phenol, sodium hydroxide and water into a reactor, heating, and adding slowly paraformaldehyde for industrial purposes into the reactor, (3) putting acrylamide into the reactor and heating slowly, (4) adding water, chloropropylene oxide and sodium hydroxide into the reactor, heating and stirring, (5) cooling, adding formic acid into the reactor and carrying out dehydration, and (6) mixing an epoxy modified phenolic resin obtained by the step 5, an organic silicone foam stabilizer, n-pentane and one or more of p-toluenesulfonic acid, benzenesulfonic acid, phosphoric acid and sulfuric acid, and pouring the mixture into a mold for foaming to obtain a desired product. The phenolic foam wall insulation material produced by the production method has the advantages of low cost, energy saving and fire resistance. Compared with similar products, the phenolic foam wall insulation material has low water absorption and strong ageing resistance, and thus the phenolic foam wall insulation material can be utilized widely for the field of thermal insulation building walls.
Owner:湖南中野高科技特种材料有限公司
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