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Material and preparation method of elastic coupling for mine machinery

An elastic coupling and mechanical technology, applied in the direction of coating, can solve the problems of short duration of antistatic properties, difficult to eliminate, poor compatibility of thermoplastic polyurethane, etc., to improve antistatic properties and flame retardancy, The effect of preventing electrostatic discharge problems, reducing possibility and danger

Inactive Publication Date: 2018-01-16
南京金三力橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the risk of igniting and detonating combustible dust due to the fact that traditional castable polyurethane elastic couplings are prone to generate static electricity and are difficult to eliminate in the mine production process, while organic antistatic agents commonly used in the prior art It is difficult to meet the antistatic performance requirements for coal mines, the duration of its antistatic performance is short, and the compatibility with thermoplastic polyurethane is not good. A material and preparation method for elastic couplings for mine machinery are provided.

Method used

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  • Material and preparation method of elastic coupling for mine machinery
  • Material and preparation method of elastic coupling for mine machinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The material of an elastic coupling for mine machinery in this embodiment, its components and mass percentages are shown in Table 1.

[0034] Table 1 Embodiment 1 A kind of component and mass percentage content of the material of the elastic coupling of mine machinery

[0035] Raw material name

[0036] In this example, the thermoplastic polyurethane is ET90G provided by Shanghai Beiyue New Material Technology Co., Ltd., and its melting point is 172° C.; the flame retardant is HT-219 produced by Jinan Taixing Fine Chemical Co., Ltd., with P content ≥ 32%, N Content ≥ 7%, decomposition temperature ≥ 300 ℃; antistatic agent is E-1006 produced by Dongguan Fiat Electrostatic Technology Co., Ltd., surface resistance 10 7 ~10 8 Ω. Due to the different properties of different polymer masterbatches, their compatibility with different antistatic agents and flame retardants is different, and the types of antistatic agents and flame retardants that are suitable for the...

Embodiment 2

[0048] The material of an elastic coupling for mine machinery in this embodiment, its components and mass percentages are shown in Table 2.

[0049] Table 2 Embodiment 2 A material component and mass percentage content of an elastic coupling for mine machinery

[0050] Raw material name

Mass percentage %

thermoplastic polyurethane

90

flame retardant

6.5

antistatic agent

3

black masterbatch

0.5

[0051] The manufacturers and performance parameters of each component in this implementation are the same as in Example 1, and the material formula of the above-mentioned elastic coupling of this example is adopted, and the steps of its preparation method are:

[0052] Step 1. Compounding agent premixing

[0053] Dry the unpacked thermoplastic polyurethane in an oven at 100°C for 3.5 hours, then put it together with flame retardant, antistatic agent, and color masterbatch in a high-speed mixer and stir for 100 seconds, so as to...

Embodiment 3

[0060] The material of an elastic coupling for mine machinery in this embodiment, its components and mass percentages are shown in Table 3.

[0061] Table 3 Embodiment 3 A material component and mass percentage content of a kind of elastic coupling for mine machinery

[0062] Raw material name

Mass percentage content %

thermoplastic polyurethane

92

flame retardant

5

antistatic agent

2

Yellow Masterbatch

1

[0063] The manufacturers and performance parameters of each component in this implementation are the same as in Example 1, and the material formula of the above-mentioned elastic coupling of this example is adopted, and the steps of its preparation method are:

[0064] Step 1. Compounding agent premixing

[0065] Dry the unpacked thermoplastic polyurethane in an oven at 110°C for 3 hours, then put it together with flame retardant, antistatic agent, and color masterbatch in a high-speed mixer and stir for 90 seconds,...

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Abstract

The invention discloses a material for an elastic shaft coupling used in mine machinery and a preparation method thereof, and belongs to the technical field of shaft coupling materials and preparation methods thereof. The material of the elastic coupling for mine machinery in the present invention is composed of the following components by mass percentage: 88-92% thermoplastic polyurethane, 5-8% flame retardant, 2-4% antistatic agent and 0.5-1.5% color masterbatch ; The preparation steps are: compounding agent premixing; extrusion granulation; drying and injection molding. The elastic coupling material prepared by the invention has excellent flame retardancy and antistatic performance on the basis of maintaining its inherent mechanical properties such as high hardness, high strength, high toughness, and high wear resistance, and can meet the needs of mine machinery. The use requirements, and its antistatic performance is permanent, which greatly reduces the possibility of dust explosion in mines.

Description

technical field [0001] The invention belongs to the technical field of shaft coupling materials and preparation methods thereof, and more specifically relates to a material for elastic shaft couplings used in mine machinery and a preparation method thereof. Background technique [0002] With the increase of the demand for coal resources and the improvement of the degree of mechanization of coal mines, a large amount of dust will be generated in the process of coal mine production, such as coal mining, transportation, etc. A large amount of static electricity is generated due to collision and friction. If the static electricity cannot be removed in time, when the static electricity accumulates and comes into contact with other uncharged objects, a high potential difference will be formed and a discharge phenomenon will occur. When the voltage exceeds 300V, the generated static sparks can ignite the surrounding combustible dust, which may hinder production at least, or cause e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04B29B9/00B29C45/00
Inventor 徐海潮严明朱向来
Owner 南京金三力橡塑有限公司
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