Preparation method of non-degumming poly urethane (PU) driving wheel

A driving wheel and degumming technology, which is applied in the directions of cleaning methods using liquids, chemical instruments and methods, cleaning methods and utensils, etc. problem, to achieve high quality and good bonding effect

Active Publication Date: 2013-02-13
CHUZHOU YULIN POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the iron core is preheated and injected with PU glue, the oil in the micropores will radiate outward when it encounters heat, and a layer of release agent is coated on the surface of the iron core so that the polyurethane glue and the iron core cannot be bonded to each other. Go together, and easy to cause degumming phenomenon
[0007] (2) The moisture on the surface of the iron core affects the bonding between the PU and the iron core: when the relative humidity in the air reaches above 30%, the surface of the iron core will condense the moisture in the air on the surface, separating the adhesive from it And affect the bonding effect; in addition, when the iron core is sandblasted and cleaned with a solvent to remove impurities, the solvent will absorb heat during the volatilization process, thereby cooling the metal surface and condensing the moisture in the air into dew. Therefore, it also affects the effect of bonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of non-degumming PU driving wheel preparation method, comprises the following steps:

[0026] Sand blasting, solvent cleaning, adhesive coating, heating, injection of PU vulcanization molding steps, before the sand blasting process, ultrasonic cleaning, water rinsing, anti-rust treatment and drying treatment should be performed on the iron core processed.

[0027] (1) Ultrasonic cleaning is to put the car-processed iron core into the ultrasonic cleaning equipment with degreasing cleaning solution; the degreasing cleaning solution is composed of normal temperature degreasing agent BT-5 with a weight ratio of 8%. Aqueous solution; the temperature of the degreasing cleaning solution is 50°C.

[0028] (2) Clean water rinsing: put the ultrasonically cleaned iron core into clean water for rinsing to remove the sewage on the surface;

[0029] (3) Anti-rust treatment: Put the iron core rinsed with clean water into the anti-rust agent solution for anti-rust treatment. Th...

Embodiment 2

[0037] A kind of non-degumming PU driving wheel preparation method, comprises the following steps:

[0038] Sand blasting, solvent cleaning, adhesive coating, heating, injection of PU vulcanization molding steps, before the sand blasting process, ultrasonic cleaning, water rinsing, anti-rust treatment and drying treatment should be performed on the iron core processed.

[0039] (1) Ultrasonic cleaning is to put the car-processed iron core into the ultrasonic cleaning equipment with degreasing cleaning solution; the degreasing cleaning solution is an aqueous solution composed of 10% normal temperature degreasing agent BT-5 by weight ; The temperature of the degreasing cleaning solution is 50°C.

[0040] (2) Clean water rinsing: put the ultrasonically cleaned iron core into clean water for rinsing to remove the sewage on the surface;

[0041] (3) Anti-rust treatment: Put the iron core rinsed with clean water into the anti-rust agent solution for anti-rust treatment. The anti-ru...

Embodiment 3

[0049] A kind of non-degumming PU driving wheel preparation method, comprises the following steps:

[0050] Sand blasting, solvent cleaning, adhesive coating, heating, injection of PU vulcanization molding steps, before the sand blasting process, ultrasonic cleaning, water rinsing, anti-rust treatment and drying treatment should be performed on the iron core processed.

[0051](1) Ultrasonic cleaning is to put the machined iron core into the ultrasonic cleaning equipment with degreasing cleaning liquid for ultrasonic cleaning; the degreasing cleaning liquid is an aqueous solution composed of 9% normal temperature degreasing agent BT-5 by weight; The temperature of the degreasing cleaning solution is 48°C.

[0052] (2) Clean water rinsing: put the ultrasonically cleaned iron core into clean water for rinsing to remove the sewage on the surface;

[0053] (3) Anti-rust treatment: Put the iron core rinsed with clean water into the anti-rust agent solution for anti-rust treatment....

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PUM

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Abstract

The invention provides a preparation method of a non-degumming poly urethane (PU) driving wheel. The preparation method of the non-degumming PU driving wheel comprises the procedures of blasting treatment, solvent cleaning, coating adhesive, heating and vulcanizing molding with PU injected. Ultrasonic cleaning, rinsing, rustproof treatment and drying treatment are carried out on an iron core machined by a lathe before the blasting treatment. The ultrasonic cleaning and the rustproof treatment and the like are carried out on the iron core before the blasting treatment on the iron core, and therefore greasy dirt in deep micropores of the iron core is clean-removed. Besides the rustproof treatment is carried out on the surface of the iron core, PU sizing materials are enabled to be bond with the iron core together without a membrane, and therefore bonding effect is enhanced, degumming is prevented well, and product quality is improved.

Description

technical field [0001] The invention relates to a PU driving wheel, in particular to a method for preparing a non-degumming PU driving wheel of a crane. [0002] Background technique [0003] The driving wheels of some heavy equipment such as cranes are required to carry a large load, have good temperature resistance, wear resistance, and high twisting and tearing strength, so PU driving wheels are often used. The PU driving wheel is a driving wheel formed by QT450-10 material and PU material together. Among them, PU is the abbreviation of polyurethane (referred to as polyurethane). Because PU only needs to modify the formula, it can obtain different physical properties such as density, elasticity, and rigidity. At present, it has largely replaced glass fiber insulation materials, wood, and traditional rubber. products, etc. QT450-10 is ductile iron, which is a ferritic nodular cast iron. It has high toughness and plasticity. At low temperature, the toughness turns to bri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/02B08B3/12B08B3/08
Inventor 史玉林
Owner CHUZHOU YULIN POLYURETHANE
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