Low-hardness solvent-resistant antistatic polyurethane elastomer and preparation method thereof

A polyurethane elastomer, polyurethane prepolymer technology, applied in rotary printing presses, printing, printing presses, etc., can solve the problems of static charge not easily disappearing, easy to absorb dust, poor tolerance, etc., to achieve excellent balance of mechanical strength, resistance to Excellent balance of solvent properties, good tolerance effect

Active Publication Date: 2013-12-11
东莞华工佛塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its structural characteristics, it has poor tolerance to polar solvents such as ketones or esters; at the same time, due to its good electrical insulation, the static charge generated by friction is not easy to disappear, and the accumulation of static charge It will cause many problems, ranging from easy to absorb dust on the surface, to generating static electricity and even causing a fire

Method used

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  • Low-hardness solvent-resistant antistatic polyurethane elastomer and preparation method thereof
  • Low-hardness solvent-resistant antistatic polyurethane elastomer and preparation method thereof
  • Low-hardness solvent-resistant antistatic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Example 1: Preparation of antistatic polyurethane elastomer with low hardness and solvent resistance

[0073] Preparation of polyurethane prepolymer: mix 500 parts by weight of PEA1000 and 314.5 parts by weight of DEP, heat to 110°C and dehydrate in vacuum at -0.1MPa for 2h. When the water content is lower than 0.05wt%, cool to 60°C, and under the protection of dry nitrogen After adding 129 parts by weight of T-80 and reacting at 70°C for 2 hours, the reaction can be stopped when the test residual NCO content reaches 2wt%, and the temperature is discharged.

[0074] Preparation of active hydrogen-containing polymer: 100 parts by weight of MX2325, 17.9 parts by weight of TMP, 745 parts by weight of DEP, 400 parts by weight of DMEP, 2.5 parts by weight of organic bismuth, 11 parts by weight of antioxidant 264, 22 parts by weight of antistatic agent Cyastat LS and an appropriate amount of defoamer, heated to 110°C and vacuum dehydrated at -0.1MPa for 2h, cooling and discharging...

Embodiment 2

[0076] Example 2: Preparation of low-hardness and solvent-resistant antistatic polyurethane elastomer

[0077] Preparation of polyurethane prepolymer: mix 500 parts by weight of PEA1000 and 314.5 parts by weight of DEP, heat to 110°C and dehydrate in vacuum at -0.1MPa for 2h. When the water content is lower than 0.05wt%, cool to 60°C, and under the protection of dry nitrogen After adding 129 parts by weight of T-100 and reacting at 70°C for 2 hours, the reaction can be stopped when the test residual NCO content reaches 2wt%, and the temperature is discharged.

[0078] Preparation of active hydrogen-containing polymer: 100 parts by weight of MX2325, 26 parts by weight of TIPA, 417 parts by weight of DEP, 300 parts by weight of DMEP, 0.54 parts by weight of organic bismuth, 9 parts by weight of antioxidant 264, 18 parts by weight of antistatic agent Cyastat LS and an appropriate amount of defoamer, heated to 110°C and vacuum dehydrated at -0.1MPa for 2h, cooling and discharging when ...

Embodiment 3

[0080] Example 3: Preparation of low-hardness and solvent-resistant antistatic polyurethane elastomer

[0081] Preparation of polyurethane prepolymer: mix 200 parts by weight of PEA1000, 100 parts by weight of PEPA2000 and 370 parts by weight of DEP, heat to 110°C and vacuum dehydration at -0.1MPa for 2h, and cool to 60°C when the water content is less than 0.05wt%, Add 162 parts by weight of MDI-50 under the protection of dry nitrogen, and after reacting at 70°C for 2 hours, the reaction can be stopped after the test residual NCO content reaches 4wt%, and the temperature is discharged.

[0082] Preparation of active hydrogen-containing polymer: 180 parts by weight of MX2325, 16.1 parts by weight of TMP, 2.7 parts by weight of BDO, 230 parts by weight of DMEP, 230 parts by weight of DBP, 0.50 parts by weight of dibutyltin dilaurate, 7 parts by weight of antioxidant 264 , 14 parts by weight of antistatic agent Cyastat SP and an appropriate amount of defoaming agent, heated to 110 ℃,...

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Abstract

The invention belongs to the technical field of polyurethane elastomers, and discloses a low-hardness solvent-resistant antistatic polyurethane elastomer as well as a preparation method and application thereof. The low-hardness solvent-resistant antistatic polyurethane elastomer contains the following components in parts by weight: 100 parts of polyurethane preformed polymer and 50-150 parts of polymer containing active hydrogen. The hardness of the low-hardness solvent-resistant antistatic polyurethane elastomer can be low to Shore 0A, and the low-hardness solvent-resistant antistatic polyurethane elastomer is good in mechanical strength, has extremely good tolerance to a ketone or ester polar solvent, and by adding an antistatic agent, the surface resistance of a product can be controlled to be less than or equal to 108ohm, so that the low-hardness solvent-resistant antistatic polyurethane elastomer can be widely applied to the antistatic field requiring solvent resistance, particularly applied to printing rollers.

Description

Technical field [0001] The invention belongs to the technical field of polyurethane elastomers, and particularly relates to a low-hardness, solvent-resistant, antistatic polyurethane elastomer, and a preparation method and application thereof. Background technique [0002] Polyurethane elastomer is a special polymer synthetic material with adjustable hardness. Due to its structural characteristics, its resistance to polar solvents such as ketones or esters is poor; at the same time, due to its good electrical insulation, the electrostatic charge generated by friction is not easy to disappear and the accumulation of electrostatic charge There will be many problems, ranging from dust on the surface, and generating static electricity, or even fire. Summary of the invention [0003] In order to overcome the above shortcomings and deficiencies of the prior art, the primary purpose of the present invention is to provide a low-hardness, solvent-resistant, antistatic polyurethane elastom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/06C08G18/42C08G18/44C08G18/66C08G18/10B41F13/08
Inventor 王功海邹明清
Owner 东莞华工佛塑新材料有限公司
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