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Non-vulcanized glue film of hydrogenated butyronitrile-polyvinyl chloride blended emulsion and preparation and application thereof

A technology for hydrogenating nitrile butadiene and polyvinyl chloride is applied in the field of chemical products and their preparation, and achieves the effects of good oil resistance, good dispersion effect and good fluidity

Active Publication Date: 2013-02-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the blended rubber products can be self-crosslinked without adding a vulcanizing agent

Method used

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  • Non-vulcanized glue film of hydrogenated butyronitrile-polyvinyl chloride blended emulsion and preparation and application thereof
  • Non-vulcanized glue film of hydrogenated butyronitrile-polyvinyl chloride blended emulsion and preparation and application thereof
  • Non-vulcanized glue film of hydrogenated butyronitrile-polyvinyl chloride blended emulsion and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Put the mixture of 100ml of NBR latex and 45ml of hydrazine hydrate into a 500ml three-neck flask, heat it to a constant temperature of 20°C, and add boric acid hydrogen peroxide solution to the mixture. 15:1, reacted for 12 hours, and obtained HNBR latex with a hydrogenation degree of 90%. Mix HNBR latex and PVC emulsion in a round bottom flask, heat it to a constant temperature of 80°C, the mixing ratio of HNBR and PVC is 99:1 according to the solid content weight ratio, and the PVC content of the blended latex is 1% and PVC is in the blended rubber It has a stable dispersed state. Dip the mold into the prepared mixed emulsion. After dipping for 10 minutes, the emulsion forms a crack-free wet gel film on the surface of the mold. The fluidity of the emulsion is good, there are no bubbles and no skinning on the surface of the emulsion surface during dipping. Soak the wet gel film in warm water at 20°C for 24 hours. Take out the wet gel film and put it in an oven at 60...

Embodiment 2

[0028] Put the mixture of 100ml of NBR latex and 45ml of hydrazine hydrate into a 500ml three-necked flask, heat it to a constant temperature of 20°C, and add boric acid hydrogen peroxide solution to the mixture. 15:1, reacted for 12 hours, and obtained HNBR latex with a hydrogenation degree of 90%. Mix HNBR latex and PVC emulsion in a round bottom flask, heat it to a constant temperature of 80°C, the mixing ratio of HNBR and PVC is 9:1 according to the solid content weight ratio, and the PVC content of the blended latex is 10% and PVC is in the blended rubber It has a stable dispersed state. The mold was immersed in the prepared mixed emulsion, and after immersion for 10min, the emulsion formed a crack-free wet gel film on the surface of the mold. The fluidity of the emulsion is good, there are no bubbles and no skinning on the surface of the emulsion surface during dipping. Soak the wet gel film in warm water at 20°C for 24 hours. Take out the wet gel film and put it in a...

Embodiment 3

[0030] Put the mixture of 100ml of NBR latex and 120ml of hydrazine hydrate into a 500ml three-neck flask, heat it to a constant temperature of 80°C, add boric acid hydrogen peroxide solution to the mixture, the total amount of hydrogen peroxide is 3.0 of the moles of carbon-carbon double bonds, and the molar ratio of boric acid to hydrogen peroxide is 40:1, reacted for 12 hours, and obtained HNBR latex with a hydrogenation degree of 90%. Mix HNBR latex and PVC emulsion in a round-bottomed flask, heat to 20°C constant temperature, the mixing ratio of HNBR and PVC is 8:2 according to the solid content weight ratio, and the PVC content of the blended latex is 20% and PVC is in the blended rubber It has a stable dispersed state. Dip the mold into the prepared mixed emulsion. After dipping for 1 min, the emulsion forms a crack-free wet gel film on the surface of the mold. The fluidity of the emulsion is good, there are no bubbles and no skinning on the surface of the emulsion sur...

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Abstract

The invention discloses a non-vulcanized glue film of a hydrogenated butyronitrile-polyvinyl chloride blended emulsion and a preparation method and an application thereof, which belong to a chemical product and a preparation method thereof. The method is characterized in that: a non-vulcanized self-crosslinking HNBR (Hydrogenated Nitrile Butadiene Rubber) / PVC (Polyvinyl Chloride) latex film is prepared from HNBR or a HXNBR (Hydrogenated Carboxyl Nitrile Butadiene Rubber)-PVC blend emulsion by means of the self-crosslinking capability in the absence of a vulcanizing agent by using the self-crosslinking capability of HNBR or HXNBR latex with a latex steeping method. The method comprises the following steps of: uniformly mixing HNBR or HXNBR latex with a PVC emulsion to prepare a mixed latex emulsion; and steeping, leaching and drying the mixed emulsion to obtain a glue film product. A process of the non-vulcanized glue film has the advantages of simple and practicable process, low energy consumption, capability of self-crosslinking without adding any crosslinking agent and high performance.

Description

technical field [0001] The invention belongs to a chemical product and a preparation method thereof, and relates to a process for hydrogenating nitrile rubber latex and blending hydrogenated nitrile latex and polyvinyl chloride emulsion to prepare blended rubber. Background technique [0002] Hydrogenated nitrile rubber (HNBR) is the selective hydrogenation of butadiene units on the nitrile rubber chain segment, hydrogenating unsaturated double bonds to generate saturated C-C single bonds. The acrylonitrile unit in the molecular chain of hydrogenated nitrile rubber can provide excellent oil resistance and high tensile strength; the saturated segment after hydrogenation can provide good heat resistance, aging resistance and low temperature performance; a small amount of butadiene containing double bonds Units provide the unsaturated bonds required for crosslinking. The great reduction of allyl hydrogen atoms after hydrogenation greatly enhances the thermal stability of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L15/00C08L27/06C08C19/02
Inventor 岳冬梅韩杨张立群苏琳韦宾
Owner BEIJING UNIV OF CHEM TECH
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