Preparation method of high-hardness polyurethane forklift wheel

A polyurethane and high-hardness technology, applied in the field of polyurethane, can solve the problems of damage to bones and skin, low hardness of fork wheels, and high labor intensity, etc., and achieve the effects of good fatigue resistance, low rolling resistance, and low cost

Inactive Publication Date: 2018-05-15
CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane forklift wheels bear heavy loads during operation and are easily damaged. When employees replace the wheels, they need to unload the forklift wheels from the forklift. This work requires the cooperation of multiple people to complete. A little improper coordination or careless operation will damage the muscles, bones and skin, and cause safety accidents.
[0003] Under the existing technology, fork wheels made of polyurethane still have technical problems of low hardness and poor resilience, which have become technical problems that need to be solved at present

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a high-hardness polyurethane forklift wheel, comprising the steps of:

[0020] S1. Mix 2g of sepiolite powder, 1.5g of lecithin, and 50g of water, heat up to 95°C and stir for 15min at a stirring speed of 5400r / min, adjust the pH of the system to 5-5.7, heat up to 60°C and continue stirring for 15min, centrifuge, The precipitate is washed with water, and spray-dried to obtain pretreated sepiolite;

[0021] S2. Mix 100g of polyurethane prepolymer, 20g of pretreated sepiolite, and 5g of neopentyl glycol evenly, place it in a mold, demould after 50min, heat up to 95°C and keep it warm for 5h to obtain a high-hardness polyurethane forklift wheel.

Embodiment 2

[0023] A method for preparing a high-hardness polyurethane forklift wheel, comprising the steps of:

[0024] S1. Mix 8g of sepiolite powder, 0.5g of lecithin, and 100g of water, heat up to 85°C and stir for 35min, the stirring speed is 5000r / min, adjust the pH value of the system to 5-5.7, heat up to 70°C and continue stirring for 5min, centrifuge, The precipitate is washed with water, and spray-dried to obtain pretreated sepiolite;

[0025] S2. Mix 140g of polyurethane prepolymer, 5g of pretreated sepiolite, and 15g of neopentyl glycol evenly, place it in a mold, demould after 30min, heat up to 105°C and keep it warm for 2h to obtain a high-hardness polyurethane forklift wheel.

Embodiment 3

[0027] A method for preparing a high-hardness polyurethane forklift wheel, comprising the steps of:

[0028] S1. Mix 4g of sepiolite powder, 1.2g of lecithin, and 60g of water, heat up to 92°C and stir for 20min, the stirring speed is 5300r / min, adjust the pH value of the system to 5-5.7, heat up to 64°C and continue stirring for 12min, centrifuge, The precipitate is washed with water, and spray-dried to obtain pretreated sepiolite;

[0029] S2. Mix 110g of polyurethane prepolymer, 15g of pretreated sepiolite, and 8g of neopentyl glycol evenly, place it in a mold, demould after 45min, heat up to 98°C and keep it warm for 4h to obtain a high-hardness polyurethane forklift wheel.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
elastic recovery rateaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a high-hardness polyurethane forklift wheel. The method includes the steps of: 1) mixing sepiolite powder, lecithin and water, heating and stirring themixture and regulating pH value of the mixture to 5-5.7; 2) continuously heating and stirring the mixture, centrifuging the mixture, and washing and spray-drying the mixture to obtain pretreated sepiolite; 3) uniformly mixing a polyurethane prepolymer, the pretreated sepiolite and neopentyl glycol, placing the mixture in a mould, demolding the mixture, heating the mixture, and maintaining the temperature to produce the high-hardness polyurethane forklift wheel. By means of the method, the polyurethane forklift wheel has high hardness and good rebound resilience, is high in mechanical strengthand bearing force, is free of damaging ground, has good anti-impact and anti-fatigue property, and is extensive in available temperature range, is low in cost and has long service life.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a method for preparing a high-hardness polyurethane fork wheel. Background technique [0002] Polyurethane forklift wheels bear heavy loads during operation and are easily damaged. When employees replace the wheels, they need to unload the forklift wheels from the forklift. This work requires the cooperation of multiple people to complete. A little improper coordination or careless operation will damage the muscles, bones and flesh, and cause safety accidents. [0003] Under the prior art, fork wheels made of polyurethane still have the technical problems of low hardness and poor resilience, which have become technical problems to be solved at present. Contents of the invention [0004] Based on the technical problems existing in the background technology, the present invention proposes a method for preparing a high-hardness polyurethane fork wheel. The obtained polyureth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/32C08K9/04C08K3/34B60C1/00
CPCB60C1/00C08G18/10C08K3/346C08K9/04C08G18/3206
Inventor 龚文祥
Owner CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap