SU1368195A1 - Method of producing laminated conveyer belt - Google Patents

Abstract

The invention relates to chemical technology, specifically to methods for manufacturing multilayer conveyor belts. The tape is prepared by impregnating the fabric base with an adhesive — a 27% solution of styrene-butadiene thermo-elastoplast, drying and applying a pa6otiero layer of the composition based on (wt.%): Styrene-butadiene thermo-, elastoplast 15–20; polymethylphenylsiloxane varnish 5-10; trimethylacetic acid 0.5-2.0; K- (2,4-dimethylphenyl) -maleimide 0.15-0.25; dicumyl peroxide 0.05-0.15; morpholine 0.5-2.0; toluene to 100%, followed by drying it at 20-40 ° C and rolling it hot; rolls at 140–180 ° C. In addition to the surface of the tape, a thermoplastic film can be rolled at a temperature of rolls 10–15 ° C above its melting temperature, f-crystals, 4 tab. 1 hp (L

Description

The invention relates to chemical technology, specifically to methods for manufacturing multilayer transporter. tapes based on the batadien-styrene i-thermoplastic elastomers, and can be used in various industries.

The aim of the invention is to increase the strength, water and oil resistance of the conveyor belt.

For the implementation of the method, a lavsan-based butadiene-styrene thermoplastic elastomer, polymethylphenylsiloxane in the form of a 50-55% solution in toluene (varnish), L- (2,4-dimethylphenyl) leimide of the general formula

ABOUT

The process is carried out in the following manner.

The fabric base of the tape is impregnated at room temperature with an adhesive — a 27% toluene solution of a butadiene-styrene thermoplastic elastomer (detail /, dried for 30–48 hours, then rolled by hot rollers at 140–180 °.

After drying and rolling, the impregnated tape reinforcement base impregnated with a solution of DST is treated on one side with the solution offered, dried at 20-40 seconds and rolled by hot rollers I with a temperature of 140-180 ° C. The tape is processed by casting or brushing at an ambient temperature. Increasing the drying temperature (higher than 40 ° C) leads to foaming of the coating. Drying the tape at a temperature below 20 ° C hinders the process of removing the solvent and results in sy-; the strength of the tape (the tape and the applied layer are easily delaminated).

Rolling the ribbon and pressing the ter-moplast is carried out only with complete removal of the solvent (toluene content not more than 0.2 wt.%) From the treatment composition.

The solution for treating the working surface of the tape is prepared as follows.

DST is dissolved in toluene and a crosslinking complex is introduced into the DST solution.

0

consisting of N- (2,4-dimethylphenyl) -melimide and dicumyl peroxide. Three-methyl acetic acid is added to the solution of polymethylphenylsiloxane varnish. The prepared components are combined, mixed, morpholine is added and mixed again. The solution is applied no earlier than 20 minutes after preparation. Extract solution is necessary in order to remove air bubbles from its volume that have arisen with stirring.

The compositions for the preparation of the working layer 5 are presented in table 1, the modes of the method implementation are in table 2, the comparative properties of ribbons made according to the known and proposed methods are in tables 3-4 (the compositions 1, 2, 6, 7 - control, 3-5 - proposed, 8, 9 - known).

Claims (2)

1. A method of manufacturing a multi-layer conveyor belt, including the impregnation of the fabric base with an adhesive - rubber solution, drying, the subsequent application of the working layer and rolling it with hot rollers, so that In order to increase the strength, water and oil resistance of the conveyor belt, a 27% toluene solution of a butadiene styrene thermoplastic elastomer is used as a rubber solution, and a working ribbon layer is applied from a composition containing, in wt.%: Styrene butadiene thermoplastic elastomer 15-20 Full Methylphenylsiloxane Varnish 5-10 Trimethylacetic acid acid 0.5-2.0 N- (2,4-dimethylphenyl) -maleimide Peroxide dicumila Morpholine Toluene 0 five 0 five 0.15-0.25 0.05-0.15 0.5-2.0 Rest Up to 100 with its subsequent drying at 20–40 ° C and sticking with hot rollers at 140–180 ° C. 2. The method of pop. 1, which differs from the fact that after rolling the working layer to the surface of the tape, a film of thermoplastic is additionally rolled at a temperature of rolls that exceeds its melting temperature by 10-15 ° C. Components ..Z; LTj.Jl JlllI I.lj.LllT Content konponentoa, ms.X, in the composition Vutadiene-styrene ermoelastoplast brand Rewriting the tape at the temperature of the solution. WITH Drying: temperature, duration Prikatka at temperature rolls, C Drying the working surface of the tape treated with the proposed solution: temperature, C time, h Prikatka at a temperature - a ratura of rolls, C Rolling at a temperature of rolls, ° C, thermoplastic coatings; 20 20 20 20 140 160 180 200 20 48 140 30 40 160 40 30 180 50 28 200 Modes of carrying out the method 136Я1956 Continuation of table 2 Indicators for composition 6 IIZZZIIIZI High pressure polyethylene film Polyvinyl chloride film Polypropylene film Ribbon properties Adhesion, kN / n: to the floor of etipeEu SPEVD) 4,02,04,86,06,0O.a to full vinyl chloride. (PVC-M67) 2,50,83,64,24,20,2 to polypropylene 3.0, b4,24,64,20,42 Defoe stiffness, t696275808068 Strength at stretching, - 48000 32000 52000 62500 62500 32000 28000 31000 28000 to- Z 650990 7,011,0 0,250,28 9.3P, 0 800 800 800 600 ether4, 2 4.7 3,83,63,62,0 0.0250,0180,0180.48 3.13, t3.04.0 0.150.15.0.152.1 Note Adhesion was determined by peeling at an angle of 180 degrees. 130 130 155 140 135 160 150 150 170 t and J Indicators for composition 61 61 800 600 3.62.0 0,0180.48 3,04,0 0,152,1 650 2.4 0.48 4.0 2.1 900 950 8.08,8 0,250,28 9,79,9 4.45.0 and e 31000 28000 58000 62500 900 1100 850 800 8.04,03,63,6 0,250,160,0180,018 9,79,03,13,1 4.42,00,150,15 62500 42000 1100 850 800 800 350 3.00.8 0.0180.026 3.13.6 0.150.2