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A kind of polyurethane low-speed solid tire and its production process

A solid tire, production process technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of inability to replace at any time, oil resistance, short rubber life, etc., to solve the problem of blocks and cracks, product performance The effect of stability and large carrying capacity

Active Publication Date: 2018-07-31
日照悍马轮胎股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this form still does not solve the problems such as short rubber life and easy cracking, and the phenomenon of inner tube air leakage still often occurs; the second is that the inside of the usual inner pneumatic rubber tire is filled with foamed polyurethane material, and this foamed polyurethane is simply used as the internal filling of rubber tires. Although the problem of rubber air leakage has been successfully solved, the problems that the outer rubber tire is not wear-resistant, oil-resistant, and have a short service life have not been solved; the third is a "polyurethane airless tire" made purely from polyurethane. Due to the poor control of the polyurethane production process, a polyurethane body that is both wear-resistant and has good elasticity is not obtained. The polyurethane tire needs to be directly cast on the metal rim, which makes the tire and the metal rim a one-time product. , and cannot be replaced at any time; at the same time, because this traditional polyurethane body does not have suitable elasticity and anti-seismic and anti-noise capabilities, it needs to be hollowed out on the tire. The tire's compressive load-bearing capacity shortens the service life

Method used

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  • A kind of polyurethane low-speed solid tire and its production process
  • A kind of polyurethane low-speed solid tire and its production process
  • A kind of polyurethane low-speed solid tire and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Heat 1,000 grams of polyester polyol 218 to 115°C for 4 hours for vacuum dehydration, add 200 grams of TDI T100 when the temperature is lowered to 70°C, control the temperature at 80°C, and mix for 2.5 hours to obtain a prepolymer;

[0035] 2) Warm 20 grams of BD14 to 100°C for 4 hours for vacuum dehydration, heat 20 grams of DMEP for 4 hours to 100°C for vacuum dehydration, then lower them to room temperature and mix them with 60 grams of DMTDA to prepare the curing agent component;

[0036] 3) Add the prepolymer and curing agent components prepared in step (1) and step (2) into tanks A and B of the pouring machine, and mix and inject the prepolymer and curing agent components at a weight ratio of 12:1 The tire is poured into the mold, put it in an oven at 110°C for 4 hours to be vulcanized, and then it can be released from the mold. Later, after 16 hours of secondary vulcanization in the oven at 110°C, the product performance will be stable.

[0037] The solid tire...

Embodiment 2

[0039] 1) Heat 1,200 grams of polyester polyol to 115°C for 4 hours in vacuum dehydration, then lower it to 70°C, add 210 grams of TDIT100, control the temperature at 80°C, and mix for 2.5 hours to prepare a prepolymer;

[0040] 2) Heat 20 grams of BD14 to 100°C for 4 hours for vacuum dehydration, heat 40 grams of DMEP to 100°C for 4 hours and vacuum dehydrate for 4 hours, then lower them to room temperature and mix them with 60 grams of DMTDA to prepare the curing agent component;

[0041] 3) Add all the prepolymer and curing agent components prepared in step (1) and step (2) into tanks A and B of the pouring machine, mix the prepolymer and curing agent components and inject them into the tire casting mold, and put It can be released from the mold after being vulcanized in an oven at 110°C for 4 hours, and the performance of the product will be stable after secondary vulcanization at 110°C in an oven for 16 hours.

[0042] The solid tire prepared in this example was tested fo...

Embodiment 3

[0044] 1) Heat 1,300 grams of polyester polyol to 115°C for 4 hours in vacuum dehydration, lower it to 70°C, add 240 grams of TDIT100, control the temperature at 80°C, and mix for 2.5 hours to prepare a prepolymer;

[0045] 2) Heat 20 grams of BD14 to 100°C for 4 hours for vacuum dehydration, heat 60 grams of DMEP to 100°C for 4 hours and vacuum dehydrate for 4 hours, then lower them to room temperature and mix them with 60 grams of DMTDA to prepare the curing agent component;

[0046] 3) Add all the prepolymer and curing agent components prepared in step (1) and step (2) into tanks A and B of the pouring machine, mix the prepolymer and curing agent components and inject them into the tire casting mold, and put It can be released from the mold after being vulcanized in an oven at 110°C for 4 hours, and the performance of the product will be stable after secondary vulcanization at 110°C in an oven for 16 hours.

[0047] Performance tests were performed on the solid tire prepare...

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Abstract

The invention relates to a formula and a production technology of a polyurethane low-speed solid tire and belongs to the technical field of high-polymer material products. The formula is characterized by comprising the following raw materials in parts by weight: 0.8-1.5 parts of polyester polyol, 0.15-0.25 parts of toluene diisocyanate, and 0.1-0.15 parts of curing agent component. The production technology is characterized by specifically comprising the following steps: dehydrating the polyester polyol and adding toluene diisocyanate to firstly obtain a prepolymer; and respectively feeding the prepolymer and the curing agent components into tanks A and B of a casting machine, mixing according to the weight parts and casting into a tire casting die, performing casting forming, and performing secondary vulcanization. The integrated solid tire having completely identical internal material, external material and performances is prepared by virtue of the formula technology and the formula, and the technology can be realized by performing primary cast forming through the tire casting die, and the production technology of the tire can be greatly simplified.

Description

technical field [0001] A polyurethane low-speed solid tire and its production process belong to the technical field of polymer material products. Background technique [0002] In recent years, rubber solid tires have been used more and more in loading vehicles and engineering vehicles. The production process of rubber solid tires is a traditional process from solid phase to solid phase, which is relatively mature. However, there are disadvantages such as easy to drop blocks and cracks. With the development of technology, the use of polyurethane to produce tires has become an emerging technology. Existing polyurethane tire mainly has three kinds of forms; One is to only utilize polyurethane to do one layer of wear-resistant layer to wrap on the outside of rubber inner tube, to increase the wear-resistant performance of tire while retaining part of the elasticity of internal rubber. However, this form still does not solve the problems such as short rubber life and easy crack...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/10B60C1/00
CPCB60C1/00B60C2001/0091C08G18/10C08G18/42C08G18/7621C08G2380/00C08G18/3868C08G18/3206C08G18/341
Inventor 许涛
Owner 日照悍马轮胎股份有限公司
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