SU1451123A1 - Composition for repair work - Google Patents

Abstract

The invention relates to building materials and is intended for repair work, gluing tiles and decorative molding. The purpose of the invention is to increase adhesion to the wood surface and reduce stickiness to the hands. The composition of the repair works contains, in wt.%: Cement 20-40; urea-formaldehyde resin. 10-25; polyacrylamide 0.2-1.5; HP-734 lacquer based on chlorosulfonated polyethylene 0.05-0.5; suspension polyvinyl chloride 0.5-3.0; building plaster 30-50; water the rest. The adhesion force of the dry sample to the wooden surface is 0.67-1.00 MPa. 2 tab.

Description

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The invention relates to construction materials, in particular, compositions for repair work, bonding tiles and decorative molding.

The purpose of the invention is to increase adhesion to the wood surface and reduce stickiness to the hands.

The invention is illustrated by examples of specific performance and their physico-mechanical parameters given in Table. 1 and 2.

HP-734 lacquer (TU 6-02-11-52-82) is a solution of chlorosulphurized polyethylene with a mass fraction of nonvolatile substances of 15-17%. Conditional viscosity at 20 + 2 ° С according to VZ-4 300–350 s.

As polyvinyl chloride suspension hot, you can use waste - production of polyvinyl chloride (cpt-12 16-75) of the following composition, wt.%: Suspension polyvinyl chloride 97.2; HjO 0.4; NaOH 0.4; sulphate ash 2.

The composition is prepared as follows.

Calculated amounts of water and polyacrylamide are loaded into a stirred reactor, stirred for 30 minutes at ambient temperature (17-25 s), and then added, with the mixer turned on, calculated amounts of resin and varnish XII-734 and stirred until homogeneous. Ready liquid semi-composition Served for packaging in polymer cans weighing

1 kg.

Then, dry components are thoroughly mixed in the mixer for 30 minutes and packed in polyethylene packages weighing 3 kg.

Component

Urea o - Formaldehyde resin (GOST 14231-78)

Bone marrow

Zmulsol sour, synthetic

tiuio economic

a piece of chalk

 component content, Mac.%, BjocTaBaxjto

ZrJIL -LILLILL.

Prototype

3.5 1.5

2.3 0.4 33

ten

25

ten

25

25

The repair composition is prepared by mixing the liquid and dry parts of the composition in a ratio of 1: (2–3). After applying it to the wall, the composition hardens after 3-4 hours, without shrinking, when coating with a water-based or oil paint, a uniform, uniform paint layer is obtained.

The proposed composition can also be used to glue decorative tiles onto concrete and wood surfaces. Ph o rmula of the invention

Composition for repair work, including cement, urea-formaldehyde resin, polyacrypamide and water, characterized in that, in order to reduce adhesion to the wooden surface and to reduce stickiness to the hands, it additionally contains HP-734 varnish based on chlorosulfurised polyethylene, suspension polyvinyl chloride and gypsum in the following ratio of components, wt.%;

Cement

MO Chevino-pho PM aldehyde resin

Polyacrylamide HP-734 varnish based on chlorosulphurized polyethylene Suspension

LIVIN IPHLO REED

Construction gypsum Water

20 -40

10 -25 0.2 -1.5

0.05-0.5

0.5 -3.0 30 -50 Else

T a b l and fa a. I

25

ten

25

25

25

31451123

Continuation of table 1

table 2

Claims (1)

Claim Composition for repair work, including cement, urea-formaldehyde resin, polyacrylamide and water, characterized in that, in order to increase adhesion to a wooden surface and · reduce stickiness to hands, it additionally contains varnish KP-734 based on chlorosulfonated polyethylene, suspension polyvinyl chloride and building plaster in the following ratio of components tov., wt.%: Cement 20 -40 Urea-fo rmaldehyde resin 10 -25 Polyacrylamide 0.2 -1.5 Varnish HP-734 on / chlorosulfonated polyethylene 0.05 -0.5 Suspension polivin ilkhloed read 0.5 oh oh Gypsum plaster thirty -fifty Water Rest and fc β. I T a b l Component The content of components, wt.H. in the compositions of the examples Prototype [ · -] 2 .L ³ „R‘ __ 1? 1'. Urea — formaldehyde resin (GOST 14231-78) 3,5 10 25 10 25 25 25 Bone glue 1,5 - - • - * Synthetic ziulsol 2,3 - - - - Laundry soap 0.4 - - * " a piece of chalk 33 - - - * • Continuation of table 1 Component The content of components, wt. X, in the compositions of the examples Prototype | 1 ² 1  1 4 ~ 5 6 Polyacrylamide 1,5 1.5 1,0 0.2 1,0 1,0 1,0 Cement 20 20 thirty 40 ’ 40 thirty thirty Plaster of construction - fifty 40 thirty - 40 40 Varnish HP-734 - 0.5 0.25 0.05 0.25 '- 0.25 Polyvinyl chloride suspension - 3.0 2.0 0.5 2.0 2.8 * - Water 37.8 15.0 1.75 19.25 31.75 2.0 3.75 Ί 'a b l and c a 2 Example composition The stickiness of the sample, MPa The adhesion strength of the dry sample to the surface, MPa Shear strength adhesive joint MPa Unpainted tree Painted tree Tile concrete PVC Concrete Tile 1 4.0-4.2 0.86 0.23 0.64 0.50 2 3.0-3.5 1.00 0.33 0.733 0.802 3 3,5-4,0 ‘ 0.67 0.20 0.513 0.464 4 5.8-6.0 0.14 0.04 0.15 0,050 5 11.0-12.0 0.55 0.15 0.42 0.30 6 8.0-8.2 0.32 0.11 0.315 0.162 Prototype 13.5-14.0 Liquid solution, not moldable 0.09 0.04