SU438285A1 - Polymer putty - Google Patents

Description

I

The invention relates to the technique of making artificial materials, in particular, polymer putties based on furan resins, intended for lining cooking vessels, containers for storing aggressive liquids, their repair, etc.

Furan polymers are characterized by almost universal chemical resistance and high heat resistance, due to which they are widely used to produce polymer putties.

Fe putty is known; arganite based on furan resin Monomer-FA, curing agent - benzenesulfonic acid and filler - andesite flour and / or black graphite (100 parts by weight).

Monomer-FA is a mixture containing monofurfurylideneacetone (50-67%), difurfurylideneacetone (22-40%), furfurol (0.66-4%) and the tarred part - their oligomers, mainly oligomers monofurfurylideneacetone (10-12% ).

However, the hardening of this putty and final curing occurs only at elevated temperatures for a long time. So, for example, at the end of lining works, the boiling pot is kept for a day at 20-30 ° C, and then at 60-80 ° C for at least 96 hours.

In order to obtain a polymer putty hardening at room temperature and fast curing, a furan resin is used that contains, by weight,%:

Difurfurylidene acetone (DIF) 30-40 furfurol40--50

Oligomers DIFA and furfural

(osmoliv with part) 15-20

The ingredients of the putty are taken in the following EU ratio. h:

Resin30-32

Hardener7,5-8

Filler100

The resulting putty hardens after 20-60 minutes at room temperature.

After 6 hours, the degree of curing it reaches 91.8% and the compressive strength of 432 kg / cm, while the degree of curing of the known putty at the same time is 85.5% and the compressive strength of 61 kg / cm.

This putty can be successfully applied to the lining of the digester during the pulping process. It has the ability to re-harden in cooking acid in the pulping process.

Example. In a net clean mixer load 100 weight.h. andesite flour, 30-32 parts by weight are introduced. the resins and thoroughly mixed until the entire surface of the grains of andesite flour is wetted. Then 7.5-8 parts by weight are introduced into the prepared mixture.

molten benzenesulfonic acid and again the entire mixture is thoroughly mixed. After 20-60 minutes, the putty hardens, and after 6 hours it reaches a satisfactory degree of cure.

The table lists the comparative characteristics of the physicomechanical properties of furan putties.

Claims (1)

Discharge occurs through the material. The putty is stable in acids, alkalis and solvents. The invention of Polymer putty containing furan resin, which is a mixture of difurfurylideneacetone, furfurol and the daring part - their oligomers, hardener - benzenesulfonic acid and filler, such as andesitic flour and / or graphite, is a shar- dy, and, the same c), the same c), a-dy; and quickly cured putty, a furan resin was used, containing, wt.%: Difurfurylidene-acetone 30-40 Furfurol 40-50 Osmolivsch part 15-20 and the putty ingredients are taken in the following ratios. h: Resin30-32 Hardener Filler