SU990722A1 - Foaming agent - Google Patents

Description

(54) FOAMER

The invention relates to the building materials industry, namely to the production of materials having a cellular structure.

Foaming agents are known based on polyhydric alcohols and synthetic fatty acids, which are used in various industries of industry 1.

The disadvantages of these blowing agents are low foam multiplicity and viability.

Closest to the invention is a foaming agent, inclusive, wt.%: Fatty acids 0.5-5.3; caustic soda 0.65-1.3; salt, salt 5-9; caustic sodium or potassium 0.15-0.35 and water the rest 2.

A disadvantage of the known foaming agent is the low foaming capacity (expansion ratio to 5), which is not enough to produce materials with a density of less than 300 kg / m.

The purpose of the invention is to increase the foaming ratio and foam stability. ,

The gel is achieved by the fact that the foaming agent, including fatty acids, caustic sodium, sodium carbonate and water, contains sodium fluorosilicate, in the following ratio of components, wt.%:

ten

Fatty acid

0.25-0.3

Caustic sodium

0.1-0.2

Sodium carbonate

0.05-0.1

Fluorosilicate

10-30

sodium

15

Water Rest

To obtain a foaming agent, formulations comprising the indicated ingredients have been prepared. The mixture was preheated.

20 uniform fatty acid dissolution.

The table shows the composition of the blowing agent and their properties.

Famous

Fatty acids 0,25 Caustic sodium OD Sodium carbonate 0.05 Sodium fluorosilicate Water 69.4

Fatty acids 0.28 Caustic sodium 0.15 Sodium carbonate 0.08

Sodium fluoride 20

Water 79.49

Fatty acids 0.3. Caustic sodium 0.20 Sodium carbonate 0.1 Sodium sodium fluoride Water 79.4

Fatty acids 0.3 Caustic sodium 0.2 Sodium carbonate 0.08 Sodium fluorosilicate 1 Water 69.42

As can be seen from the table, the optimal amount of sodium fluoride supplement is in the range of 10-20%, and with its further increase, the characteristics of the caves change little.

On the proposed foaming agent, materials with a density of 100 kg / m, tensile strength and flexural strain of 0.1-0.2 MPa were obtained.

Coarse foam

Fine foam

1-2

2-3

Also

3-3.5

3-3.5

Foam preparation technology involves heating waste fatty acids until 60 percent of sodium fluoride is dissolved in them.

mixing and foaming on existing equipment.

Formula of the Invention A foaming agent comprising fat 65 bie acids, sodium hydroxide, sodium carbonate (59907) and water, characterized in that, in order to increase the rate of foaming and the stability of the foam. it contains sodium silicofluoride in the following ratio, wt.%: 5. Fatty acids 0,25-0,3 Caustic sodium 0,1-0,2. Sodium carbonate 0.05-0.1 22D Sodium silicofluoride 10-30 WaterExtra Information sources taken into account during the examination i. USSR Author's Certificate 391095, class, C 04 B 15/02, 1972. 2. USSR author's certificate, 717002, class. From 04 To 15/02, 1976.

Claims (1)

Claim Foaming agent, including fatty acids, 1 acid, sodium hydroxide, carbonate ( 5 990722 sodium and water, distinguishing— “with the fact that, in order to increase the rate of foaming and foam resistance, it contains sodium silicofluoride in the following ratio of components, May.%: Fatty acid 0.25-0.3 Sodium hydroxide 0.1-0.2 Sodium carbonate 0.05-0.1 Sodium silicofluoride 10-30 Water Else