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A kind of high-strength hydrophobic copper cross-linked carboxymethyl chitosan/carboxylated styrene-butadiene rubber composite material and its preparation method

A technology of carboxymethyl chitosan and carboxylated styrene-butadiene rubber, which is applied in the field of high-strength hydrophobic copper cross-linked carboxymethyl chitosan/carboxymethyl styrene-butadiene rubber composite materials and its preparation, can solve the problem of undiscovered carboxymethyl chitosan The method of polysaccharide/carboxylated styrene-butadiene rubber composite materials and other problems can overcome the effects of strength reduction and even dissolution, mild preparation conditions, and good hydrophobicity

Active Publication Date: 2022-05-13
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although it is mentioned in the existing literature that styrene-butadiene latex and chitosan are used as raw materials in some building materials such as paints and mortars, their hydrophobicity is achieved by adding other ingredients, and it has not been found that it is prepared by copper crosslinking reaction. Method of Carboxymethyl Chitosan / Carboxylated SBR Composite Material

Method used

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  • A kind of high-strength hydrophobic copper cross-linked carboxymethyl chitosan/carboxylated styrene-butadiene rubber composite material and its preparation method
  • A kind of high-strength hydrophobic copper cross-linked carboxymethyl chitosan/carboxylated styrene-butadiene rubber composite material and its preparation method
  • A kind of high-strength hydrophobic copper cross-linked carboxymethyl chitosan/carboxylated styrene-butadiene rubber composite material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Stir 5 parts of carboxymethyl chitosan in 1000 parts of deionized water for half an hour until dissolved, take 200 parts of carboxymethyl styrene-butadiene latex, slowly add carboxymethyl chitosan solution dropwise under the condition of mechanical stirrer 600rpm, and then Continue stirring at 1200rpm for half an hour. After vacuum defoaming, pour the mixed solution into a mold and dry it in a 40°C oven to constant weight to obtain a preliminary carboxylated styrene-butadiene rubber / carboxymethyl chitosan composite film; The composite film was completely submerged in 0.5-2mol / L copper chloride solution for 24 hours, taken out and dried in a 40 oven for 12 hours to obtain a copper cross-linked carboxymethyl chitosan / carboxylated styrene-butadiene rubber composite film.

Embodiment 2

[0032] Stir 10 parts of carboxymethyl chitosan in 1000 parts of deionized water for half an hour until dissolved, take 200 parts of carboxymethyl styrene-butadiene rubber emulsion, slowly add carboxymethyl chitosan solution dropwise under the condition of mechanical stirrer 600rpm, and then Continue stirring at 1200rpm for half an hour. After vacuum defoaming, pour the mixed solution into a mold and dry it in a 40°C oven to constant weight to obtain a preliminary carboxylated styrene-butadiene rubber / carboxymethyl chitosan composite film; The composite film was completely submerged in 0.5-2mol / L copper chloride solution for 24 hours, taken out and dried in a 40 oven for 12 hours to obtain a copper cross-linked carboxymethyl chitosan / carboxylated styrene-butadiene rubber composite film.

Embodiment 3

[0034] Stir 15 parts of carboxymethyl chitosan in 1000 parts of deionized water for half an hour until dissolved, take 200 parts of carboxymethyl styrene-butadiene rubber emulsion, slowly add carboxymethyl chitosan solution dropwise under the condition of mechanical stirrer 600rpm, and then Stir continuously at 1200rpm for half an hour. After vacuum defoaming, pour the mixed solution into a mold and place it in a 40°C oven to dry to constant weight to obtain a preliminary carboxylated styrene-butadiene rubber / carboxymethyl chitosan composite film; The obtained composite film is completely submerged in 0.5-2mol / L copper chloride solution for 24 hours, taken out and dried in a 40 oven for 12 hours to obtain a copper cross-linked carboxymethyl chitosan / carboxylated styrene-butadiene rubber composite film.

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Abstract

The invention discloses a preparation method of a high-strength hydrophobic copper-crosslinked carboxymethyl chitosan / carboxymethyl styrene-butadiene rubber composite material, which specifically comprises the following steps: stirring carboxymethyl chitosan in deionized water for half an hour until it dissolves, Take the carboxylated styrene-butadiene rubber emulsion, slowly add the carboxymethyl chitosan solution dropwise under the condition of a mechanical stirrer, and then continue to stir for half an hour. After vacuum defoaming, pour the mixed solution into a mold and dry it in an oven. Obtain a preliminary carboxylated styrene-butadiene rubber / carboxymethyl chitosan composite film; completely immerse the composite film in a copper chloride solution to react, take it out and place it in an oven to dry to constant weight to obtain copper cross-linked carboxymethyl chitosan Sugar / carboxylated styrene-butadiene composite film. The preparation condition of the composite material of the invention is mild, and the prepared composite material has the characteristics of high strength, hydrophobicity, etc., and overcomes the problem that the strength of the natural polymer-based rubber composite material is reduced or even dissolved in a high humidity or water environment.

Description

technical field [0001] The invention belongs to the field of polymer-based carboxylated styrene-butadiene rubber composite materials, in particular to a high-strength hydrophobic copper-crosslinked carboxymethyl chitosan / carboxylated styrene-butadiene rubber composite material and a preparation method thereof. Background technique [0002] Carboxylated styrene-butadiene rubber XSBR is a commonly used industrial binder, mainly used in paper coating, printing and other aspects. However, a single carboxylated styrene-butadiene rubber material has a single structure and unstable performance, making it difficult to show application advantages in other aspects. In order to explore the application of XSBR in polymer functional materials, people have blended it with various fillers and processed them with different processes in the past 20 or 30 years, opening up a new world in the field of basic research. By choosing different fillers, different Component ratios and processing aid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J7/12C08L13/00C08L5/08
CPCC08J5/18C08J7/12C08J2313/00C08J2405/08
Inventor 徐传辉王兴钬林宝凤付丽华
Owner GUANGXI UNIV