Essential antistatic thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and antistatic technology, applied in the field of polyurethane elastomers, can solve the problems affecting the strength and hardness of materials, the decline of antistatic properties, and the complex processing technology, and achieve excellent low-temperature elasticity, long-lasting antistatic properties, and simple processing technology. Effect

Inactive Publication Date: 2019-04-19
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these fillers are difficult to disperse evenly in polyurethane elastomer materials, resulting in a decrease in antistatic performance, or a large amount of antistatic fillers need to be added to meet the conductive properties
Graphene and carbon nanotubes are widely used, but this conductive material still has agglomeration during production and processing, and graphene and carbon nanotubes are expensive, which severely limits the popularity and use of materials
Moreover, this kind of conductive filler affects the appearance of the product, and this kind of antistatic polyurethane elastomer seriously restricts the demand for various colors of conductive materials.
A large amount of antistatic fillers will seriously affect the strength and hardness of the material
[0004] Other antistatic agents generally have the characteristics of surfactants, with both polar groups and non-polar groups in the structure. The antistatic effect of this type of antistatic agent is related to the use environment. Good antistatic effect, poor antistatic effect in dry environment
It has high requirements on the use environment, which seriously affects the use effect of antistatic polyurethane elastomers
[0005] In summary, the existing antistatic thermal polyurethane elasticity has disadvantages such as unsustainable antistatic ability, complicated processing technology, performance loss after adding antistatic materials, and inability to make transparent or other colored products.

Method used

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  • Essential antistatic thermoplastic polyurethane elastomer and preparation method thereof
  • Essential antistatic thermoplastic polyurethane elastomer and preparation method thereof
  • Essential antistatic thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] An intrinsically antistatic thermoplastic polyurethane elastomer made from the following raw materials in the following weight percents:

[0035]

[0036]

[0037] Its preparation method is as follows:

[0038] (1) Polytetrahydrofuran block polyamide 6 copolyethylene glycol (M=1000), antioxidant 1010 and organotin are added in reactor A by weight percentage, nitrogen protection, keep reactor A temperature is 105 ℃, and in Stir well in the reaction kettle A evenly. Add MDI into reactor B by weight percentage, protect the reactor with nitrogen, and keep the temperature of the reactor at 60°C. Add 1,4-butanediol into reactor C according to the weight percentage, protect the reactor with nitrogen, and keep the temperature of the reactor at 55°C.

[0039] (2) After the temperature of each reactor is stabilized, through the perfusion system with precise metering, the raw material components in the reactors A, B and C are accurately metered by the metering pump accordi...

Embodiment 2

[0041]An intrinsically antistatic thermoplastic polyurethane elastomer made from the following raw materials in the following weight percents:

[0042]

[0043] The specific preparation process is the same as that of Example 1, the difference is that the temperature of the reactor A is 95°C, the temperature of the reactor B is 55°C, and the temperature of the reactor C is 50°C; the A component and 1 / 2 of the B group Add in the first zone of the screw for pre-polymerization and blending. Then add component C and 1 / 2 of component B in the fifth zone of the screw; the temperature of the twin-screw extruder is 210° C., and the screw speed is 190 rpm.

Embodiment 3

[0045] An intrinsically antistatic thermoplastic polyurethane elastomer made from the following raw materials in the following weight percents:

[0046]

[0047] The specific preparation process is the same as in Example 1, the difference is that: the temperature of the reactor A is 100°C, the temperature of the reactor B is 40°C, and the temperature of the reactor C is 60°C; the A component and 1 / 2 of the B group Add in the first zone of the screw for pre-polymerization and blending. Then add component C and 1 / 2 component B in the fifth zone of the screw; the temperature of the twin-screw extruder is 205°C, and the screw speed is 200rmp.

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PUM

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Abstract

The invention belongs to the technical field of polyurethane elastomers, and in particular relates to an essential antistatic thermoplastic polyurethane elastomer and a preparation method thereof. Theessential antistatic thermoplastic polyurethane elastomer is prepared from the following raw materials (by weight): 29.5-65.0% of polymer polyol, 27.0-54.0% of isocyanate, 7.5-18.5% of a chain extender, 0.2-0.3% of an antioxidant and 0.01-0.03% of a catalyst. The essential antistatic thermoplastic polyurethane elastomer of the invention has good antistatic property, requires no addition of an antistatic agent, can be used for color matching, can be used to manufacture products with various colors or transparent products, and has low-temperature elasticity. Through prepolymerization by twin screw and then through one-step curing, the essential antistatic thermoplastic polyurethane elastomer is obtained. The preparation method is simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of polyurethane elastomers, and in particular relates to an intrinsically antistatic thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Polyurethane elastomers have been widely used due to their good processing properties and wide hardness range. However, with the rapid development of industry, the performance requirements of polyurethane elastomers are getting higher and higher. In actual production and use, polyurethane elastomer materials have a relatively high surface resistivity ρs (about 10 11 ~10 14 Ω) and volume resistivity ρv (about 10 13 ~10 15 Ω·m) is very large and is an insulating material. [0003] Due to the conductive inertness of polymers, general polymer materials cannot be antistatic. And this feature has also led to the limitation of the application of TPU in some special occasions. At present, the method of improving the antistatic...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/60C08G18/50C08G18/32
CPCC08G18/3206C08G18/5039C08G18/60C08G18/6674C08G18/7614C08G18/7671
Inventor 陈淑海管永张宁刘凯良
Owner SHANDONG INOV POLYURETHANE
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