Polyurethane lining plate and preparation method thereof

A polyurethane and polyurethane prepolymer technology, applied in the field of equipment wear protection, can solve the problems of low strength, poor hydrolysis resistance stability, complex production and installation processes, etc., to improve product wear resistance, reduce flexibility, magnet row Cloth position stability effect

Active Publication Date: 2014-04-09
BIRTLEY TIANJIN IND EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane lining board currently used has poor hydrolysis stability and low strength, and is mostly connected by bolts. Bolts need to be embedded for equipment lining connections during pouring, and the manufacturing and installation processes are complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a 1.5L reactor, 10g of silicon carbide particles (200 mesh), 0.08g of titanate coupling agent, and 0.6g of stannous octoate after treatment with γ-aminopropyltriethoxysilane were added to 200g In the polycaprolactone polyol with an average molecular weight of 1000, stir and disperse evenly at a speed of 5000rpm, put it into the reactor, raise the temperature to 90°C, and the vacuum degree reaches -0.08MPa, keep stirring at the temperature and pressure for 2 hours, and add diphenyl Methyl methane diisocyanate 80g, obtain the modified polyester polyurethane prepolymer after reaction 2h;

[0038] Evenly arrange the cut steel plates and strong magnets inside the casting mold in order. The shape of the strong magnets is square, and two magnets are used in combination at each place;

[0039] The above-mentioned modified polyester polyurethane prepolymer and ether bond-containing diamine curing agent 2,2-bis[4-(4-aminophenoxy)-phenyl]-propane according to the mass ratio of ...

Embodiment 2

[0041] In a 1.5L reactor, 16g of silicon carbide particles (180 mesh) treated with γ-aminopropyltriethoxysilane, 0.16g of titanate coupling agent, and 1.0g of dibutyltin dilaurate were added to 200g of polycaprolactone polyol with a number-average molecular weight of 4000, stirred at a speed of 5600rpm to disperse evenly, then put it into the reactor, raised the temperature to 100°C, and the vacuum degree reached -0.09MPa, kept the temperature and pressure and stirred for 2.5h, under the protection of nitrogen Add 100 g of diphenylmethane diisocyanate and react for 3 hours to obtain a modified polyester polyurethane prepolymer;

[0042] Evenly arrange the cut carbon fibers and strong magnets in order and pour them into the mold. The strong magnets are semicircular in shape, and two magnets are used in combination at each place;

[0043]The above-mentioned modified polyester polyurethane prepolymer and ether bond-containing diamine curing agent 2,2-bis[4-(4-aminophenoxy)-phenyl...

Embodiment 3

[0045] In a 1.5L reactor, 20g of silicon carbide particles (100 mesh), 0.3g of titanate coupling agent, and 1.6g of stannous octoate after treatment with γ-aminopropyltriethoxysilane were added to 200g In the polycaprolactone polyol with an average molecular weight of 2000, stir and disperse evenly at a speed of 6000rpm, put it into the reactor, raise the temperature to 120°C, and the vacuum degree reaches -0.1MPa, keep stirring at the temperature and pressure for 3 hours, and add diphenyl Methyl methane diisocyanate 75g, obtain the modified polyester polyurethane prepolymer after reaction 4h;

[0046] Evenly arrange the cut carbon fiber, steel plate and strong magnet in order and cast them inside the mold; the strong magnet is square in shape, and two magnets are used in combination at each place;

[0047] The above-mentioned modified polyester polyurethane prepolymer and ether bond-containing diamine curing agent 2,2-bis[4-(4-aminophenoxy)-phenyl]-propane according to the ma...

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Abstract

The invention relates to a polyurethane lining plate and a preparation method thereof, and belongs to the field of wear-resistance protection of equipment. The polyurethane lining plate consists of a prepolymer and a curing agent containing an ether bond at a weight ratio of 100 to (8-12), wherein the prepolymer is prepared from the following raw materials in parts by weight of 100 parts of polyhydric alcohol, 35-50 parts of isocyanate, 5-10 parts of silicon carbide particles, 0.3-0.8 part of an organotin catalyst and 0.04-0.15 part of a coupling agent. With the adoption of the polyurethane lining plate provided by the invention, the structural strength of a polyurethane elastomer is improved and the hydrolysis property of the polyurethane elastomer is reduced; the wear resistance of the product is effectively improved; the softness of the ether bond is improved and the rigidity of the ether bond is realized, so that not only can various physical and mechanical properties of the elastomer be ensured, but also the hydrolysis resistance stability and strength of the polyurethane lining plate are improved, the impact deformation is prevented and the more firm structure is realized; the mounting and dismounting processes are simple and convenient, the processing intensity of an inner liner of the equipment is reduced, and the lining plate is convenient to replace; the shut-down time for maintenance of the equipment is shortened, the investment cost caused by equipment production is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a polyurethane liner and a preparation method thereof, belonging to the field of equipment wear protection. Background technique [0002] The metal parts in various mechanical equipment and instruments are often damaged and invalidated from the surface first during use, and the products operate stably for a long time under harsh industrial and mining conditions, which will inevitably put forward higher requirements for the strength and wear resistance of the surface . At present, in the construction machinery and material conveying industries, the commonly used materials for wear-resistant linings include wear-resistant metals, ceramics, and wear-resistant rubber. The wear-resistant metal liner has a large proportion, high equipment load, complicated installation and replacement, and can only be used for grinding and conveying materials that are not afraid of iron pollution; ceramic liners are generally expensive, and must be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08G18/66C08G18/42C08G18/10C08K9/06C08K3/34
Inventor 陈兵唐琳琳王盟
Owner BIRTLEY TIANJIN IND EQUIP
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