SU968002A1 - Raw mix for making phosphate molding material - Google Patents

Description

(541 RAW MIXTURES FOR THE MANUFACTURE OF PHOSPHATE PRESS MATERIAL

The invention relates to building materials and is intended for the manufacture of a phosphate press material used as a construction material.

A well-known raw material mixture comprising a high alumina material, a phosphate binder and a fiberglass tl.

The disadvantage of this mixture is its low mechanical strength. I The closest to the technical essence is the raw material mixture for the manufacture of a structural press material comprising 30-70% glass fiber reinforcement per filler, 20-40% combined aluminum and chromium acidic phosphate at. the molar ratio, to, paiHOM 0.05-3, and the molar ratio of NI to (., +) equal to 1.7-2.4, and 10-30% of active alumina-containing filler 23.

The disadvantages of a npecfc material made from a known mixture are their low strength, water resistance, and fire resistance.

The purpose of the invention is to increase the durability, water resistance and fire resistance of the press material.

This goal is achieved by the fact that; “The health mixture for the manufacture of a phosphate i-press material, including a phosphate binder, a reinforcing glass fiber filler and an additive, contains as a phosphate binder a copper-chromophosphate binder with a molar ratio of P, O5 to (CuO +) equal to 2.5 - 2.8, as an additive - kaolin and additionally serpentinite in the following ratio of components, wt.%:

Copper chromium phosphate15

20-45 binder 6-15 Kaolin 4-10 Serpentinite Reinforcing glass fiber

20

The rest of the filler

An increase in the water resistance of phosphate fiberglass on the basis of the proposed mixture is achieved due to the fact that the copper-chromophosphate binder, saturated to high basicity (pH 2), interacts with kaolin and fiberglass. in the presence of serpentinite, 30 forms high-strength compounds.

Serpentinite, a waste in the production of asbestos, acts as an active additive.

Serpentinite activity is due to the presence of magnesium oxides Ov40%, iron and silicon oxides, as well as other basic oxides.

When basic oxides (mainly MgO) interact with an excess of orthophosphoric acid in a copper-chromophosphate binder, the acidity of the latter decreases sharply (pH from 2 to 4-5), which, in turn, leads to a decrease in corrosion of the glass-fiber filler and allows for a high strength condition fiberglass in the resulting material.

The material acquires high strength.

In addition, serpentinite, c. the strength of its activity allows to obtain a waterproof material, curing the binder at a lower temperature (130 ° C).

With a serpentinite content in the mixture of less than 4%, it is not possible to obtain a high strength material at this curing temperature, since you do not believe the phosphoric acid excess phosphoric binder reacts and the acid remaining destroys the glass fiber filler. Increasing the amount of serpentinite more than 20% leads to an instant curing of the binder at room temperature and does not allow to obtain a durable material.

Flexural strength, kgf / cm

Flexural strength after holding the samples in water for a day, kgf / cm

pH of water extract Water absorption,% Flammability

The presence of kaolin in the composition of the mixture improves the processability of its plasticity, since without a specified amount of this component the copper chromophosphate binder with serpentinite

forms a porous structure.

Example. 4% serpentinite is pre-ground in a ball mill to a fraction of 50 microns. Ground serpentine is carefully mixed with 20% copper chromophosphate binder. Bb of kaolin is then added and, after being uniformly stirred, the mixture is impregnated with 70% glass fiber filler.

Approx 2. b% serpentinite is pre-ground in a ball mill to a fraction of 50 microns. Ground serpentinite is thoroughly mixed with 30% copper-phosphate binder. Then 9% kaolin is added and, after being uniformly stirred, the mixture is impregnated with 55% glass fiber filler.

Example 3. 10% serpentinite pre-grind in a ball mill to a fraction of 500 microns. Ground serpentinite is thoroughly mixed with 45% copper chromophosphate binder. Then 15% kaolin is added and, after uniform mixing, the mixture is impregnated with 30% glass fiber filler.

The table shows the comparative characteristics (press material made from known proposed mixtures.

600

600

800

350

580

750

1.9

6.5

5.8 Not more than 8.0 Not flammable Not more than No more than No more than 6.0 5.0. 10 Non-Flammable Non-Flammable. Flammable

59680026

The material obtained on the basis of glass fiber filler and

the proposed raw material mixture has an additive, characterized by

more-high performance: water-proof for durable

resistance, fire resistance and strength, fire resistance and water resistance

material increased 1.5-2 times. of the material, it contains as

The cost of an experienced proizvodsgeeva phosphate bond tsego copperchromophosphate

phosphate press material on Mytischinsky binder with a molar ratio

com plant Stroyperlit 1.35 tooth. to (CvO), equal to 2.5 per 1 kg or 5.83 rubles. for 1 m at 2,8, as an additive - kaolin and

Compared with polyester fiberglass-additionally serpentinite with a binder, the cost of which is 7.29 per 1 m. The second ratio of kuyutoneitov,

The economic effect of the use of wt.%: Material 0.46 rubles / m. Copper phosphate-

In the planned production of mate binder 20-45 riyal at the Mytishchi plant Stroy-Kaolin6-15

perlite 300 thousand per year economical - 15 Serpentinite 4-10

The chesky effect will be about 140 thousand. Reinforcing pyg fiberglass. The formula of the invention is 20 taken into account when examining

Raw material mixture for the manufacture of 512200, cl. C 04 B 35/10, 1968. phosphate press material, including A, e ° P ° ° ®

common phosphate binder, reinforcing material 510457, cl. From 04 To 39/08, 1976.

this filler Else

Information sources.

1. USSR author's certificate

Claims (1)

The claims 20 Raw material for the manufacture of a phosphate press material, including a phosphate binder, reinforcing