Thermoplastic polyurethane elastomer for mining sieve as well as preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of thermoplastic polyurethane, can solve the problems of humid use environment, increased screen working temperature, accelerated material aging, etc., to achieve extended service life, excellent wear resistance, efficient and stable processing methods. Effect

Inactive Publication Date: 2019-12-20
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem of TPU used in mining screens is that the screens will be continuously impacted and rubbed by a large amount of ore during use. Frictional heat and internal heat will lead to an increase in the working temperature of the screen and accelerate the aging of the material. TPU material has good high-temperature dimensional stability, wear resistance and high mechanical strength to prolong the service life of the screen; the ore screening process needs to go through water washing and other processes, and the use environment is humid, so TPU material is required to have good hydrolysis resistance Performance, and hydrolysis resistance is the weakness of polyester TPU, which needs to be improved

Method used

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  • Thermoplastic polyurethane elastomer for mining sieve as well as preparation method thereof
  • Thermoplastic polyurethane elastomer for mining sieve as well as preparation method thereof
  • Thermoplastic polyurethane elastomer for mining sieve as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The thermoplastic polyurethane elastomer for the mine screen is made of the following raw materials in percentage by weight:

[0031]

[0032] The polybutylene adipate / propylene glycol ester diol has a molecular weight of 1000 and a functionality of 2.005.

[0033] The preparation process of the thermoplastic polyurethane elastomer for the mine screen is as follows:

[0034] Mix and heat polybutylene adipate / propylene glycol ester diol, 1010, 770, UV-1, montan wax, polyethylene wax, SF8427, P200 and T-9 to 110±5°C and mix well; MDI -100 is heated to 70±5°C; 1,6-hexanediol is heated to 65±5°C; the heated raw material components are accurately metered and mixed into the tray, and the mixed material enters the high-temperature drying tunnel with the tray, and enters the Aged in a drying room at 100°C for 10 hours, pulverized by a pulverizer, and pelletized underwater by a twin-screw extruder to obtain the product.

Embodiment 2

[0036] The thermoplastic polyurethane elastomer for the mine screen is made of the following raw materials in percentage by weight:

[0037]

[0038] The polyhexamethylene adipate / propylene glycol ester diol has a molecular weight of 3000 and a functionality of 2.01.

[0039] The preparation process of the thermoplastic polyurethane elastomer for the mine screen is as follows:

[0040] Mix and heat polyhexamethylene adipate / propylene glycol ester diol, 1010, 770, UV-1, montan wax, polyethylene wax, SF8427, P200 and T-9 to 110±5°C and mix well; MDI -100 is heated to 70±5°C; 1,6-hexanediol is heated to 65±5°C; the heated raw material components are accurately metered and mixed into the tray, and the mixed material enters the high-temperature drying tunnel with the tray, and enters the Aged in a drying room at 100°C for 10 hours, pulverized by a pulverizer, and pelletized underwater by a twin-screw extruder to obtain the product.

Embodiment 3

[0042] The thermoplastic polyurethane elastomer for the mine screen is made of the following raw materials in percentage by weight:

[0043]

[0044] The polyethylene adipate / propylene glycol has a molecular weight of 2000 and a functionality of 2.002.

[0045] The preparation process of the thermoplastic polyurethane elastomer for the mine screen is as follows:

[0046] Mix and heat polyethylene adipate / propylene glycol, 1010, 770, montan wax, polyethylene wax, SF8427, P200 and T-9 to 110±5°C and mix well; heat MDI-100 to 70±5°C; 1,4-butanediol is heated to 65±5°C; the heated raw material components are accurately metered and mixed into the tray, and the mixed material enters the high-temperature drying tunnel with the tray and enters the 100°C drying room Aging for 10 hours, pulverized by a pulverizer, and underwater pelletized by a twin-screw extruder to obtain the product.

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Abstract

The invention relates to a thermoplastic polyurethane elastomer for a mining sieve as well as a preparation method thereof, and belongs to the technical field of thermoplastic polyurethane. The thermoplastic polyurethane elastomer for the mining sieve comprises the following raw materials: polyester polyol, diisocyanate, a chain extender, an antioxidant, a light stabilizer, a lubricating agent, awater-proofing agent, an anti-hydrolysis agent and a catalyst, wherein the molecular weight of the polyester polyol is 1000 to 3000 and the functionality degree of the polyester polyol is 2.001 to 2.02. The thermoplastic polyurethane elastomer for the mining sieve has excellent high-temperature dimensional stability, high modulus, low abrasion and hydrolysis resistance, can be formed rapidly and can perform processing by an extruding or injection molding mode; meanwhile, the invention provides a simple and practicable preparation method.

Description

technical field [0001] The invention relates to a thermoplastic polyurethane elastomer for mine screens and a preparation method thereof, belonging to the technical field of thermoplastic polyurethane. Background technique [0002] Mining screen is a mesh structure element used for sieving and filtering. Widely used in screening, filtration, dehydration, desliming and other operations in many industries. It has high strength, rigidity and bearing capacity, and can be made into rigid screening and filtering devices of various shapes. Mainly used in coal, mining, petroleum, chemical, food and other industries. [0003] Mining screens are mostly made of stainless steel, manganese steel, polyurethane and other materials. There are many disadvantages of steel screens: high density, high quality screens with the same area, and inconvenient disassembly; it is difficult to make microporous screens and cannot be used in fine mining; it is noisy when used, not wear-resistant, and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/32C08L75/08C08L91/06C08L23/06C08L83/04C08K5/134
CPCC08G18/3206C08G18/4238C08G18/664C08L75/08C08L2201/08C08L2205/035C08L91/06C08L23/06C08L83/04C08K5/1345Y02P20/52
Inventor 代金辉肖培栋刘亚辉马超李龙飞
Owner SHANDONG INOV POLYURETHANE
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