SU962252A1 - Binder - Google Patents

Description

The ratio of ingredients in the binder is optimal. A smaller amount of it does not ensure complete wetting of the mineral filler. Increase the amount specified-. The lower interval reduces the viability of the press powder.

For the preparation of the binder, Diane epoxy resin is combined with furfural and shale resin is added to the irradiated mixture. Cement grade 300 is then taken and water is added to it under constant stirring to obtain a W / C of 0.2. Stirring is complete after complete wetting of the cement sample. In a pre-prepared mixture of organic ingredients at constant

Ingredients

Content, ma.h.., in compositions Furfurol0,831Polyethylenepolyamine0, 140.19 Cement1419.6 Water2.83.9 Shale resin1.1 Dianova, epoxy resin

while stirring, a measured amount of polyethylene polyamine is introduced, and after 5-7 minutes, cement with water is added. The mixture is thoroughly stirred until a uniform press powder is obtained, the viability of which is 6 hours. The press powder obtained is loaded into a preheated 210-220-c form and pressed for 20 minutes at a pressure of 100 MPa.

In that: bl. 1 shows the compositions of the proposed and known binders, and in Table. 2 - their properties.

As follows from the table. 2, the proposed binder makes it possible to increase the compressive strength by 27.5% and bending by 35%.

T a b l i

C i izi

Table in 4 (known) 1.2 1.25-1.5 0.22 0.25-0.50 2 4.4 15-30 1 3.3

Claims (1)

Claim A binder comprising furfural, polyethylene polyamine, cement and water, characterized in that, in order to increase compressive and bending strength, it additionally contains shale and diane epoxy in the following ratio of components, parts by weight of g 'Furfural 0.83-1 , 2 Polyethylenepolyamine 0.14-0.22 VNIIIPI Order 7419 / fifty Cement 14.0-22.0 . Water 2.8-4.4 Shale la 1,0 Diana Epoch 55 syringe resin 1.67-3.3