CN100360453C

CN100360453C - Method for preparing powder composition

Info

Publication number: CN100360453C
Application number: CNB2006100096368A
Authority: CN
Inventors: 刘韬
Original assignee: HARBIN INTELLIGENT GREAT EXPLOIT INDUSTRY Co Ltd
Current assignee: HARBIN INTELLIGENT GREAT EXPLOIT INDUSTRY Co Ltd
Priority date: 2006-01-18
Filing date: 2006-01-18
Publication date: 2008-01-09
Anticipated expiration: 2026-01-18
Also published as: CN1803690A

Abstract

The present invention relates to a preparation method of a powder composition. 10000g of nanometer anatase type titanium dioxide is added in a double-spiral conical mixer, wherein the average particle diameter of the nanometer anatase type titanium dioxide is smaller than or equal to 20 nm, and a specific surface area is smaller than or equal to 0.3.300g of aminomethyl dioxethyl silanetoluene solution whose content is 50% is added under stir at the high speed of 1500 revolutions per minute, temperature is raised to 90DEG C, toluene is discharged by starting a vacuum pump, and the toluene is recovered and repeatedly used by a condenser. Mixer temperature is dropped to room temperature after 2 hours, normal pressure is recovered, and a treated photocatalyst prepared from the titanium dioxide is discharged from a discharge hole for momentary reserve. Water is added to the following powder mixture to be uniformly mixed according to the weight ratio of 35%, the composition is mixed and homogenized in the conventional powder mixer and is put in packaging bags, and the powder composition is formed. The present invention excellently enables the mixture to be dispersed in the water, and the decorative effect of a fine and smooth appearance can be obtained. The decorative construction of the wall body surface can be carried out by adding the quantitative water in the powder composition of the present invention before use.

Description

A kind of preparation method of powder composition

Affiliated field: the preparation method who the present invention relates to a kind of powder composition.

Background technology: existing polymer modification mortar mainly is the composition of cement and organic polymer, be well-known, for example: 100 gram titanium dioxide 120 gram polymer materials (ethene---vinyl acetate copolymer) f 3.5 gram ether of cellulose e 676.9 gram lime carbonate d 100 gram white lime c a) 400 gram cement b))))).Above powdered mixture adds entry by 35% weight ratio and mixes.Be added with organic polymer, can improve the bonding force of base material and better snappiness is provided, above-mentioned composition because long-term exposure in air, can be infected with dust particle, is unfavorable for cleaning during as the external wall facing, influences the outward appearance of buildings; Composition mixes stirring with water, can produce the dispersion non-uniform phenomenon, and this is owing to the easy aggegation of titanium dioxide produces, therefore, and its dispersed and stable function that can directly influence product when bad and attractive in appearance.

Summary of the invention: the purpose of this invention is to provide a kind ofly, improve the preparation method of a kind of powder composition of its dispersing property in composition by handling titanium dioxide with silane coupling agent.The objective of the invention is to realize by following structure: the present invention is a kind of preparation method of powder composition, the 1000g nano-scale anatase titanium dioxide is added the duplex cone-type mixer, nano-scale anatase titanium dioxide median size≤20nm wherein, specific surface area≤0.3, under 1500 rev/mins of high-speed stirring, add 300g content 50% amino methyl diethoxy silane toluene solution, temperature rises to 90 ℃ and start vacuum pump and discharge toluene, toluene reclaims through condenser and reuses, after 2 hours, the mixing machine temperature is dropped to room temperature, recover normal pressure, it is standby that discharge port is emitted treated titanium dioxide optical catalyst, powdered mixture is: a) 400 gram cement, b) 100 gram white limes, c) 326.5 gram lime carbonate, d) 3.5 gram ether of cellulose, e) 120 gram polymer materialss, f) 50 gram titanium dioxide optical catalysts are through the nano-scale anatase titanium dioxide of amino methyl diethoxy silane processing, powdered mixture adds entry by 35% weight ratio and mixes, above-mentioned composition is mixing in the powder blenders of routine, and the packing bag of packing into is finished product.The sharp titanium titanium dioxide of nano level contact angle in water under uviolizing is very little, even reach 0 the degree, has Superhydrophilic, dirt is difficult in surface attachment, and the dirt that adheres to is wind-force externally, and water drenches impulse force, from effects such as gravity down, also can be automatically from the facing sur-face peeling, the ultraviolet ray in the sunlight is enough to keep the water-wet behavior of the sharp titanium titanium dioxide surface of nano level, thereby makes its surface have secular anti-pollution automatically cleaning effect.In addition, the sharp titanium titanium dioxide of nano level can produce through UV-irradiation has that extremely strong active electronics---the hole is right, after these electron-hole pairs are moved to the surface, can participate in redox reaction, utilize the effective decomposing organic pollutant of photocatalytic Degradation, the oxynitride in the oxidation removal atmosphere, sulfide and all kinds of foul smell etc.1500 rev/mins of high-speed stirring are wrapped on the sharp titanium titanium dioxide granule of nano level coupling agent rapidly, adopting 50% amino methyl diethoxy silane toluene solution is to play the coating effect as coupling agent, make this mixture can not produce agglomeration, the sharp titanium titanium dioxide granule of nano level can better be dispersed in the mixture.Vinyl polymer, styrene polymer can be dispersed in the polymkeric substance in the water once more, make polymkeric substance have snappiness, water tolerance, wear resistance.Titanium dioxide optical catalyst through silane coupling agent is handled can be good at being dispersed in the water, can obtain fine and smooth bright and clean exterior decorative effect.

Embodiment:

A kind of preparation method of powder composition, the 10000g nano-scale anatase titanium dioxide is added the duplex cone-type mixer, nano-scale anatase titanium dioxide median size≤20nm wherein, specific surface area≤0.3, under 1500 rev/mins of high-speed stirring, add 300g content 50% amino methyl diethoxy silane toluene solution, temperature rises to 90 ℃ and start vacuum pump and discharge toluene, toluene reclaims through condenser and reuses, after 2 hours, the mixing machine temperature is dropped to room temperature, recover normal pressure, it is standby that discharge port is emitted treated titanium dioxide optical catalyst, and powdered mixture is: a) 400 gram cement, b) 100 gram white limes, c) 326.5 gram lime carbonate, d) 3.5 gram ether of cellulose, e) 120 gram polymer materialss, f) 50 gram titanium dioxide optical catalysts are through the nano-scale anatase titanium dioxide of amino methyl diethoxy silane processing, powdered mixture adds entry by 35% weight ratio and mixes, and above-mentioned composition is mixing in the powder blenders of routine, and the packing bag of packing into is finished product.

Hydraulic material uses cement and gypsum usually, preferred cement, cement preferred proportion 10-60 part.

Stopping composition is silica sand, quartz sand, lime carbonate, talcum powder, kaolin and mica powder, stopping composition preferred proportion 5-90 part;

The preferred following polymkeric substance of polymer materials:

Vinyl polymer: vinyl acetate copolymer, ethene---vinyl acetate copolymer; Vinyl acetate---acrylate---ethylene copolymer.

Acrylic ester polymer: n-butyl acrylate---vinylformic acid 2---ethylhexyl multipolymer; Methyl methacrylate---n-butyl acrylate or vinylformic acid 2---ethene ethyl ester multipolymer; Methyl methacrylate---1,3 butadienecopolymers.

Vinyl chloride-base polymer: vinylchlorid---vinyl acetate---ethylene copolymer; Vinylchlorid---ethylene copolymer; Vinylchlorid---acrylate copolymer.

Styrene polymer: vinylbenzene---butadienecopolymer; Vinylbenzene---acrylate copolymer.

Above-mentioned polymkeric substance is synthetic with emulsion polymerization, spray-dried making.

Water-holding agent preferred cellulose ether and through ether of cellulose, starch ethers, polyacrylic acid or its partial esterification compound etc. of modification, most preferable hydroxyethyl ether cellulose, preferred proportion are 0.1-1 part.

Photocatalyst is Nano titanium dioxide and the surface treatment of process silane coupling agent most preferably, improves its redispersion performance, and can improve in the polymer materials bonding force.Preferred proportion 1-10 part.

Silane coupling agent is preferred: vinyl silanes, aminosilane, epoxy radicals silicone hydride, sulfenyl silane, methacryloyl base silane, most preferably aminosilane.

Above-mentioned polymkeric substance is mixing and making in the powder blenders of routine, adds gauge water before using, and can carry out the wall body surface decorative construction.

Embodiment 1

A) 400 gram cement

B) 100 gram white limes

C) 326.5 gram lime carbonate

D) 3.5 gram ether of cellulose

E) 120 gram polymer materialss: ethene---vinyl acetate copolymer

F) 50 gram photocatalysts

Above powdered mixture adds entry by 35% weight ratio and mixes;

Embodiment 2

A) 400 gram cement

B) 100 gram white limes

C) 276.5 gram lime carbonate

D) 3.5 gram ether of cellulose

E) 120 gram polymer materialss: vinylbenzene---butadienecopolymer

F) 100 gram photochemical catalysis things

Above powdered mixture adds entry by 35% weight ratio and mixes;

Embodiment 3

A) 400 gram cement

B) 100 gram white limes

C) 176.5 gram lime carbonate

D) 3.5 gram ether of cellulose

E) 120 gram polymer materialss: vinylchlorid-ethene---vinyl acetate copolymer

F) 200 gram photocatalysts

Above powdered mixture adds entry by 35% weight ratio and mixes;

Embodiment 4

A) 400 gram cement

B) 100 gram white limes

C) 176.5 gram lime carbonate

D) 3.5 gram ether of cellulose

E) 120 gram polymer materialss: methyl methacrylate-n-butyl acrylate copolymers

F) 200 gram photocatalysts

Above powdered mixture adds entry by 35% weight ratio and mixes;

Test result is as shown in Figure 1: the titanium dioxide optical catalyst through silane coupling agent is handled, can be good at being dispersed in the water, and can obtain fine and smooth bright and clean exterior decorative effect.Product of the present invention added gauge water before using, can carry out the wall body surface decorative construction.

Claims

1, a kind of preparation method of powder composition, it is characterized in that: the 10000g nano-scale anatase titanium dioxide is added the duplex cone-type mixer, nano-scale anatase titanium dioxide median size≤20nm wherein, specific surface area≤0.3, under 1500 rev/mins of high-speed stirring, add 300g content 50% amino methyl diethoxy silane toluene solution, temperature rises to 90 ℃ and start vacuum pump and discharge toluene, toluene reclaims through condenser and reuses, after 2 hours, the mixing machine temperature is dropped to room temperature, recover normal pressure, it is standby that discharge port is emitted treated titanium dioxide optical catalyst, powdered mixture is: a) 400 gram cement, b) 100 gram white limes, c) 326.5 gram lime carbonate, d) 3.5 gram ether of cellulose, e) 120 gram polymer materialss, f) 50 gram titanium dioxide optical catalysts are through the nano-scale anatase titanium dioxide of amino methyl diethoxy silane processing, powdered mixture adds entry by 35% weight ratio and mixes, above-mentioned composition is mixing in the powder blenders of routine, and the packing bag of packing into is finished product.