Preparation method for polyurethane forklift wheel with high rebound resilience

A technology of resilience and polyurethane, applied in the field of polyurethane, can solve the problems of material consumption cost, low hardness, poor resilience, etc., and achieve the effect of small rolling resistance, high hardness and excellent emulsification performance

Inactive Publication Date: 2018-06-22
CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, rubber fork wheels of various shapes are used, which can reduce the bumps and vibrations caused by contact with the ground during transportation and transmission. Generally, polyurethane materials are used to wrap the outer wall of the outer wheel. However, polyurethane materials have low hardness and poor resilience. Defects, the old worn wheels have to be replaced frequently, resulting in a large consumption of materials and an increase in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method of a high-resilience polyurethane forklift wheel, comprising the following steps: uniformly mix 130kg polyurethane prepolymer, 24kg pretreated asbestos, and 10kg ethylene glycol, place them in a mold, demould after 60 minutes, and heat up to 100°C for heat preservation 8h, get the high resilience polyurethane fork wheel.

[0016] The pretreatment asbestos is prepared by the following process: mix 6kg of asbestos powder, 3kg of cocamidopropyl betaine, and 80kg of water, heat up to 90°C and stir for 30min at a stirring speed of 5700r / min, adjust the pH value of the system to 5-5.7, and heat up Continue to stir at 65°C for 20 minutes, centrifuge, wash the precipitate with water, and spray dry to obtain pretreated asbestos.

Embodiment 2

[0018] A preparation method of a high-resilience polyurethane fork wheel, comprising the following steps: uniformly mix 150kg polyurethane prepolymer, 18kg pretreated asbestos, and 20kg ethylene glycol, place them in a mold, demould after 40 minutes, and heat up to 120°C for heat preservation 4h, get the high resilience polyurethane forklift wheel.

[0019] The pretreatment asbestos is prepared by the following process: mix 14kg of asbestos powder, 1kg of cocamidopropyl betaine, and 120kg of water, heat up to 80°C and stir for 50min at a stirring speed of 5300r / min, adjust the pH of the system to 5-5.7, and heat up Continue to stir at 75°C for 10 minutes, centrifuge, wash the precipitate with water, and spray dry to obtain pretreated asbestos.

Embodiment 3

[0021] A method for preparing a high-resilience polyurethane forklift wheel, comprising the following steps: uniformly mix 135kg of polyurethane prepolymer, 22kg of pretreated asbestos, and 12kg of ethylene glycol, place them in a mold, demould after 55 minutes, and heat up to 105°C for heat preservation 7h, get the high resilience polyurethane fork wheel.

[0022] The pretreatment asbestos is prepared by the following process: mix 8kg of asbestos powder, 2.5kg of cocamidopropyl betaine, and 90kg of water, heat up to 88°C and stir for 35min at a stirring speed of 5600r / min, and adjust the pH of the system to 5-5.7. Raise the temperature to 68°C and continue stirring for 18 minutes, centrifuge, wash the precipitate with water, and spray dry to obtain pretreated asbestos.

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Abstract

The invention discloses a preparation method for a polyurethane forklift wheel with high rebound resilience. The preparation method comprises the following steps: uniformly mixing a polyurethane performed polymer, pretreated asbestos and ethylene glycol, placing an obtained mixture into a mold, and carrying out demolding, heating and heat-preserving so as to obtain the polyurethane forklift wheelwith high rebound resilience, wherein the pretreated asbestos is prepared through the following process: mixing asbestos powder, cocamidopropyl betaine and water, carrying out heating under stirring,adjusting a pH value of a system to 5 to 5.7, carrying out heating, continuing stirring, and carrying out centrifuging, washing and spray-drying so as to obtain the pretreated asbestos. The polyurethane forklift wheel prepared by using the preparation method for the polyurethane forklift wheel with high rebound resilience provided by the invention has the advantages and characteristics of high hardness, good rebound resilience, high mechanical strength, high bearing capacity, no damage to the ground, good impact resistance and fatigue durability, wide applicable temperature range, low cost andlong service life.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a method for preparing a high resilience polyurethane fork wheel. Background technique [0002] In the process of transporting the drive, in order to make the transport easier, a forklift is often used for transport. Generally, rubber fork wheels of various shapes are used, which can reduce the bumps and vibrations caused by contact with the ground during transportation and transmission. Generally, polyurethane materials are used to wrap the outer wall of the outer wheel. However, polyurethane materials have low hardness and poor resilience. Due to the defects of the wheel, the old worn wheels have to be replaced frequently, resulting in a large consumption of materials and an increase in cost. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a method for preparing a high-resilience po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/04C08K7/12C08G18/10C08G18/32
CPCC08G18/10C08K7/12C08K9/04C08L75/04C08G18/3206
Inventor 龚文祥
Owner CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
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