SU449084A1 - Method for producing foams based on phenol-alcohols - Google Patents

Description

(54) METHOD OF OBTAINING FOAMS IN OCLLOBLI FIBNESLNP 1; ) l5

one

The invention relates to a method for producing thermal insulation building materials and products.

A known method of producing foam based on phenolnirts by foaming and curing the latter in the presence of a surfactant, a blowing agent and a foaming curing agent.

The disadvantage of this method is e1x; The fact that, when using a series of phenolnirs, the process of their curing takes a long time and, at the same time, materials with relatively low physical and mechanical properties are obtained.

The purpose of the invention is eax :; accelerating the curing process and improving the physicochemical properties of the target product.

This goal is achieved by the fact that the process of foaming and curing the foam is carried out in the presence of chloride in a volume of 0.5-8.0 weight. including 1OO weight, including stripes mouths.

Zinc chloride catalyzes the process of the formation of fepolospnrtos, posto

write process and improve luuinjiuai property

that

II p and Mep 1. K 1OO weight. h. uoe..iiii.vi female, 1x phenol distilling (FS.-) with mg; l rayk) i .. oTHOujeHHeM between ({kenol and (|| normal1 D (.l-) 1-.

house 1: 2,3 added 1 in 5 weight. including mixtures of shea, ethylene glycolic. x ethers of mono- and dicalkylphenols (OP-1O), 1 wt. h. alumini-lu powder and 4 weight, h. chloride chloride. The obtained composition is mixed with 3t) ve.s

including foaming-curing aienra, duct VAG-3 and poured into the mold, ist j nonlast is foamed and cured. : N p i M e r 2. K 1OO weight. h o6o; .iiHi.

0)

I blended PSs with a molar ratio between phenol and formaldehyde 1: 1.5 add 5 wt. h. OP-10, .1 weight. h. alomiyi1ch (1H powder and 2 wt. parts of zinc chloride.) the mixture is mixed with 25 weight.h, the product VAG-3 and poured into hHiTiJiacT foamed and hardened.

PRI and MER 3. Compositing ready g according to example 2, but zinc chloride bo, put in an amount of 1 weight, h. The resulting composition is mixed with 25 weight. production h

VAG.3 and poured into a mold where the foam is suspended and cured.

EXAMPLE 4 A composition is prepared as in Example 1, but chloride zinc is taken in cohg quality 6 wt. The resulting composition. The tables show that the proposed method allows to shorten the curing time of foams by more than 2 times and increase their physic-hiexa. The average svish-tva about 50-40%. PRODUCT AND METHOD The method of producing foams on the basis of | Danol-alcohols with churning and rejection is mixed with SO weight. h, the product of the VAG is poured into a mold where the foam formation foams and cures.

The test results are shown in the table. 30 days of phenol-alcohols in the presence of a top-active substance, a gas spreader and a foaming curing agent, characterized in that, with the aim of accelerating the curing process and higher. Neither the physicomechanical properties of the target product, the process is carried out in the presence of zinc chloride in the amount of O, 5-8.0 Vx h, per 1OO weight. h, phenol-alcohol.