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A kind of polyester polyurethane resin composition for sieve plate and its preparation method and use method

A technology of polyester polyurethane and resin composition, which is applied in the field of polyester polyurethane resin composition for sieve plate, can solve the problems of decreased wear resistance, shortened service life of vibrating screen, high hardness, etc., and achieves improvement of elasticity and resistance. Abrasiveness, the effect of meeting the requirements of low temperature use

Active Publication Date: 2017-06-06
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyurethane elastomer prepared by using this type of polyester has poor low temperature resistance, and the hardness changes greatly with temperature. At -20°C, cold hardening will occur, the original resilience will be lost, and the wear resistance will decrease, resulting in vibrating screen screening. Reduced efficiency and shortened life of the vibrating screen

Method used

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  • A kind of polyester polyurethane resin composition for sieve plate and its preparation method and use method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the examples, which are not limited to the present invention. The parts described in the examples are all parts by mass.

[0023] The preparation process in the specific embodiment is as follows:

[0024] (1) Component A: Put the isocyanate and dehydrated polyester diol 1 of each example in Table 1 into the reaction kettle in proportion, control the temperature at 75-85°C, and react for 3-4 hours under the protection of high-purity nitrogen. Vacuum defoaming, sampling and testing of NCO content, cooling and discharging, sealed storage;

[0025] (2) Component B: add polyester diol 2 in Table 2 into a dehydration kettle, dehydrate at 100-120°C for 2-3 hours, cool down and discharge, and store in a sealed container;

[0026] (3) Component C: Add the 1,4-butanediol in Table 3 into the dehydration kettle, dehydrate at 90-100°C for 3-5 hours, take a sample to test that the water content is less than 3...

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Abstract

The invention discloses a polyester type polyurethane resin composition for a sieve plate as well as a preparation method and an application method of the polyester type polyurethane resin composition. The composition is prepared from the following components in parts by mass: components A including 100 parts of polyester diol 1 and 80-123 parts of 4,4'-diphenylmethane diisocyanate, component B including 100 parts of polyester diol 2, and components C including 100 parts of 1,4-butanediol and 0.1-0.5 part of organic amine catalyst. The polyester diol 1 is one or the combination of two of poly(ethylene glycol hexanediol adipate) and poly(ethylene glycol neopentyl glycol adipate) diol; the polyester diol 2 is one or the combination of several of poly(diethylene glycol adipate) diol, poly(butanediol adipate) diol and poly(ethylene glycol butanediol adipate) diol. At -20 DEG C, the elastomer hardness of the sieve plate prepared by use of the composition is increased by less than or equal to 10 in contrast with the hardness at a room temperature.

Description

technical field [0001] The invention relates to the field of cast polyurethane elastomers, in particular to a polyester polyurethane resin composition for sieve plates that can still maintain good performances such as resilience and wear resistance under low temperature environments. Background technique [0002] Polyurethane elastomer has excellent properties such as resilience, wear resistance, and tear resistance. The sieve plate prepared with it can not only greatly reduce the weight of the equipment, reduce the cost of the equipment, prolong the service life, and reduce noise, it is widely used in mining, metallurgy, etc. , coke, coal washing, petroleum, chemical and other industries vibrating screen washing and classification operations. [0003] According to the classification of oligomer polyols, polyurethane sieve plates mainly include polyester sieve plates and polyether sieve plates, among which the polyester used in polyester sieve plates is mostly adipic acid po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08G18/10
CPCC08G18/10C08G18/3206C08G18/4202C08G18/4238C08G18/425C08G18/664C08G18/7671C08G18/42
Inventor 张利军韦永继苏丽丽王振韩冰
Owner LIMING RES INST OF CHEM IND
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