CN1201768A

CN1201768A - Thermal insulating materials for aluminium silicate outer wall

Info

Publication number: CN1201768A
Application number: CN97121885A
Authority: CN
Inventors: 赵贵祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-05
Filing date: 1997-12-18
Publication date: 1998-12-16

Abstract

An insulating composite for external wall is a dried powder material prepared from pearlite, aluminium silicate fibre, asbestos, sepiolite, bentone, float bead, powdered coal ash, cement, lime, gypsum, early-strengthening agent and compound adhesive, and features low density, high strength, 0.0067 W/mk of heat conductivity, low volume contraction percentage (1.3%), not cracking, strong adhesion, no toxic pollution and resisting against fire, acid, alkali and ageing. It is suitable for internal surface of concrete or brick wall.

Description

Thermal insulating materials for aluminium silicate outer wall

The invention belongs to a kind of building heat preservation plastering material.

In construction work, paste the heat-insulating property that warming plate strengthens exterior wall in general the employing, the thickness of warming plate is about 60mm, adds that finish coat can occupy about indoor width 80mm.Being used for the heat-insulation and heat-preservation material that interior wall wipes one's face at present has perlite and cement motar and flyash motar, and its thermal and insulating performance and anti-cracking performance all can not make the people satisfied.Existing a kind of insulating paste that contains pearlstone, aluminum silicate fiber, asbestos, sepiolite, wilkinite, floats pearl and tackiness agent, owing to contain whipping agent, volumetric shrinkage 20～25%, ftracture easily, setting time is long, way far away transportation and storage are inconvenient, only are used for pipeline and tank body, fail to promote the use of at inner wall of building.

The present invention provides a kind of dry powder thermal insulating materials for aluminium silicate outer wall that is used for plastering on inner walls, reduces volumetric shrinkage, improves resistance to cleavage, makes it to make things convenient for on-the-spot stirring of inner wall of building to be constructed.

Technical scheme of the present invention is:

This thermal insulating materials for aluminium silicate outer wall, contain perlite, aluminum silicate fiber, asbestos, sepiolite, wilkinite, float pearl and tackiness agent, it is characterized in that: by perlite 13～17%, float pearl 3～8%, flyash 10～14%, aluminum silicate fiber 5～10%, asbestos 10～13%, sepiolite 5～10%, cement 14～20%, lime 2～5%, wilkinite 3～6%, gypsum 10～13%, hardening accelerator 1～4%, composite adhesive 2～5% and be made into dry powder material.

Material reaction mechanism: when water adds in the material a large amount of water-swellings of fortifying fibre.Under the effect of admixture, make it to discongest, crosslinked mutually, make whole slurry be reticulated structure.Under the effect of compound binding agent and toughener, various matrix material generation hydration reactions form gelatinous material, and the pearlstone filling wherein.On this applying material wall, begin to solidify, intensity increases gradually, in drying process, moisture content evaporates in a large number, forms countless small unicellular structures, adding the raw material of selecting for use is the little material of thermal conductivity mostly, so just make that density of material is lower, heat conduction is that little, fortifying fibre has advantages of higher tensile strength and toughness, various matrix materials add, and make material contracts little.

During construction, stir, with regard to available general plastering technique construction as long as add suitable quantity of water.Smear or be sprayed on surface within the walls.Construction thickness is decided by the insulation design requirement.

Material performance index of the present invention is as follows:

930 kilograms/cubic metre of slurry density

280 kilograms/cubic metre of goods dry densities

Volumetric shrinkage 1.3%

PH 11～12

Cohesive strength (with 7 days concrete pouring time) 60.76Kpa

(with brick curing time 7 days) 150Kpa

Ultimate compression strength (curing time 7 days) 310Kpa

Thermal conductivity 0.0067W/mk

Through the test of three test buildings, smear the thick aluminum silicate insulation material of 19mm in the 370mm brick wall; Smear the thick aluminum silicate insulation material of 28mm in the 240mm brick wall; The thick Steel Concrete of 180mm is smeared the thick aluminum silicate insulation material of 35mm within the walls; Can satisfy Beijing area building energy conservation requirement.

Advantage of the present invention: owing to do not contain whipping agent in the proportioning, increase hardening accelerator, so than like product reasonable ratio, volumetric shrinkage is little, anti-cracking performance is strong, and the scene adds water stirs, and setting time is suitable, convenient transportation, storage and construction; Have also that density is low, intensity is high, thermal conductivity is little, cohesive force is strong, fire prevention, nontoxic pollution-free, acid and alkali-resistance, characteristics such as ageing-resistant.Compare with interior warming plate, have good heat insulating, thin thickness, no seam, whole good, advantage such as the surface is not easy to crack.For example the brick of a family usable floor area 56.52 square meters mixes dwelling house, and exterior wall is the 240mm brick wall, if adopt gypsum cement glass polyphenyl sandwich thermal insulation board, this family usable floor area reduces 0.74 square metre, accounts for usable floor area 1.3%.As adopt this material, and usable floor area only reduces 0.28 square metre, accounts for usable floor area 0.5%, and both differ 2.6 times.If with 3000 yuan of valuation of every square metre of usable floor area of one hundred houses, use the warming plate price to reduce 22.2 ten thousand yuan, and use this material only to reduce 8.4 ten thousand yuan, differ 13.8 ten thousand yuan between the two.The present invention is applicable in various concrete walls, the brick wall and wipes one's face.

Below in conjunction with embodiments of the invention the present invention is described in detail:

This pure aluminium silicate composite heat insulatant thermal insulation material is by perlite 13～17%, float pearl 3～8%, flyash 10～14%, aluminum silicate fiber 5～10%, asbestos 10～13%, sepiolite 5～10%, cement 14～20%, lime 2～5%, wilkinite 3～6%, gypsum 10～13%, concrete early strength agent 1～4%, composite adhesive 2～5% and be made into dry powder material.Compound binding agent can be with polymkeric substance or water glass etc.

Its optimum weight proportioning: perlite 14.98%, float pearl 5.62%, flyash 11.24%, aluminum silicate fiber 7.5%, asbestos 11.24%, sepiolite 7.5%, cement 16.85%, lime 3.75%, wilkinite 4.49%, gypsum 11.24%, hardening accelerator 2.25%, composite adhesive 3.37%.

Proportioning embodiment: perlite 40 gram, float pearl 15 grams, flyash 30 grams, aluminum silicate fiber 20 grams, asbestos 30 grams, sepiolite 20 grams, cement 45 grams, lime 10 grams, wilkinite 12 grams, gypsum 30 grams, hardening accelerator 6 grams, composite adhesive 9 grams.

Claims

1, a kind of pure aluminium silicate composite heat insulatant thermal insulation material, contain perlite, aluminum silicate fiber, asbestos, sepiolite, wilkinite, float pearl and tackiness agent, it is characterized in that: by perlite 13～17%, float pearl 3～8%, flyash 10～14%, aluminum silicate fiber 5～10%, asbestos 10～13%, sepiolite 5～10%, cement 14～20%, lime 2～5%, wilkinite 3～6%, gypsum 10～13%, hardening accelerator 1～4%, composite adhesive 2～5% and be made into dry powder material.