Self-crosslinking vinyl acetate-acrylic emulsion modified with waterborne neoprene latex and cured at room temperature and preparation method of vinyl acetate-acrylic emulsion

Abstract

The invention belongs to the technical field of emulsion preparation and discloses a self-crosslinking vinyl acetate-acrylic emulsion modified with waterborne neoprene latex and cured at room temperature and preparation method of vinyl acetate-acrylic emulsion. The emulsion is prepared from the following components in parts by mass through a reaction: 39.43-55.93 parts of water, 12.66-15.88 parts of aqueous neoprene latex, 8.12-15.72 parts of butyl acrylate, 12.12-19.72 parts of vinyl acetate, 9.86-12.12 parts of isooctyl acrylate, 1.4-1.5 parts of a functional monomer, 0.2-0.3 parts of polyvinyl alcohol, 2.33-3.7 parts of an emulsifier, 0.07-0.093 parts of a buffer agent, 0.14-0.2 parts of an initiator, 0.42-0.64 parts of diacetone acrylamide, 0.21-0.32 parts of a crosslinking agent, 0.025-0.035 parts of tert-butyl hydroperoxide and 0.015-0.025 parts of sodium formaldehyde sulfoxylate. With introduction of the water-based neoprene latex, initial viscosity and cohesion strength are significantly improved, and waterproof, anti-fouling and anti-corrosion properties as well as peel strength are greatly improved after film forming.

Description

technical field

[0001] The invention belongs to the technical field of emulsion preparation, and in particular relates to a room temperature curing self-crosslinking water-based neoprene latex modified vinegar-acrylic emulsion and a preparation method. Background technique

[0002] Vinegar-acrylic emulsion is one of the most important emulsion adhesives in the world today. Because it is easy to use, does not pollute the environment, and is cheap, it is widely used in daily life and industrial production, such as wood processing, furniture assembly, fabric bonding, packaging materials, building decoration and many other fields.

[0003] Vinegar-acrylic emulsion contains strong polar groups and has good adhesive strength, but its application is greatly restricted due to its shortcomings such as high glass transition temperature, poor low-temperature film-forming property, water resistance, cold resistance and poor mechanical stability. limit. In order to meet the higher requ...

Examples

Embodiment 1

[0056] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 55.93kg of deionized water; 12.66kg of water-based neoprene latex; 8.12kg of butyl acrylate; 12.12kg kg of vinyl acetate; 12.12kg of isooctyl acrylate; 1.40kg of methacrylic acid; 0.30kg of polyvinyl alcohol; 1.55kg of nonylphenol ethoxylates; 0.78Kg of sodium lauryl sulfate; 0.07 kg of sodium bicarbonate; 0.14 kg of ammonium persulfate; 0.42 kg of diacetone acrylamide; 0.21 kg of succinic acid dihydrazide; 0.025 kg of tert-butyl hydroperoxide;

[0057] Its preparation method comprises the following steps:

[0058] 1. 12.66kg of water-based neoprene latex, 8.12kg of butyl acrylate, 12.12kg of vinyl acetate, 1.05kg of methacrylic acid, 0.42kg of diacetone acrylamide, 1.33kg of nonylphenol polyoxyethylene ether The sodium lauryl sulfate of 0.66kg and the isooctyl acrylate of 12.12kg join the deio...

Embodiment 2

[0066] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 51.8kg of deionized water; 13.46kg of water-based neoprene latex; 10.02kg of butyl acrylate; 14.02 kg kg of vinyl acetate; 10.43 kg of isooctyl acrylate; 1.43 kg of methacrylic acid; 0.23 kg of polyvinyl alcohol; 1.78 kg of nonylphenol ethoxylates; 0.89 kg of sodium lauryl sulfate; 0.076 kg of sodium bicarbonate; 0.15 kg of sodium persulfate; 0.48 kg of diacetone acrylamide; 0.24 kg of succinic acid dihydrazide; 0.028 kg of tert-butyl hydroperoxide;

[0067] Its preparation method comprises the following steps:

[0068] 1. 13.46kg of water-based neoprene latex, 10.02kg of butyl acrylate, 14.02kg of vinyl acetate, 1.07kg of methacrylic acid, 0.48kg of diacetone acrylamide, 1.53kg of nonylphenol polyoxyethylene ether , 0.76kg of sodium lauryl sulfate and 10.43kg of isooctyl acrylate are added to ...

Embodiment 3

[0076] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 47.68kg of deionized water; 14.27kg of water-based neoprene latex; 11.92kg of butyl acrylate; 15.92kg kg of vinyl acetate; 10.99kg of isooctyl acrylate; 1.45kg of acrylamide; 0.25kg of polyvinyl alcohol; 2.01kg of nonylphenol ethoxylates, 1.005kg of sodium lauryl sulfate; 0.0815kg 0.17kg of ammonium persulfate; 0.53kg of diacetone acrylamide; 0.265kg of adipic dihydrazide; 0.03kg of tert-butyl hydroperoxide;

[0077] Its preparation method comprises the following steps:

[0078] 1. 14.27kg of water-based neoprene latex, 11.92kg of butyl acrylate, 15.92kg of vinyl acetate, 1.0875kg of acrylamide, 0.53kg of diacetone acrylamide, 1.72kg of nonylphenol polyoxyethylene ether, Add 0.86kg of sodium lauryl sulfate and 10.99kg of isooctyl acrylate into 31.00kg of deionized water, and stir and emulsify t...

technical field

[0001] The invention belongs to the technical field of emulsion preparation, and in particular relates to a room temperature curing self-crosslinking water-based neoprene latex modified vinegar-acrylic emulsion and a preparation method. Background technique

[0002] Vinegar-acrylic emulsion is one of the most important emulsion adhesives in the world today. Because it is easy to use, does not pollute the environment, and is cheap, it is widely used in daily life and industrial production, such as wood processing, furniture assembly, fabric bonding, packaging materials, building decoration and many other fields.

[0003] Vinegar-acrylic emulsion contains strong polar groups and has good adhesive strength, but its application is greatly restricted due to its shortcomings such as high glass transition temperature, poor low-temperature film-forming property, water resistance, cold resistance and poor mechanical stability. limit. In order to meet the higher requ...

Examples

Embodiment 1

[0056] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 55.93kg of deionized water; 12.66kg of water-based neoprene latex; 8.12kg of butyl acrylate; 12.12kg kg of vinyl acetate; 12.12kg of isooctyl acrylate; 1.40kg of methacrylic acid; 0.30kg of polyvinyl alcohol; 1.55kg of nonylphenol ethoxylates; 0.78Kg of sodium lauryl sulfate; 0.07 kg of sodium bicarbonate; 0.14 kg of ammonium persulfate; 0.42 kg of diacetone acrylamide; 0.21 kg of succinic acid dihydrazide; 0.025 kg of tert-butyl hydroperoxide;

[0057] Its preparation method comprises the following steps:

[0058] 1. 12.66kg of water-based neoprene latex, 8.12kg of butyl acrylate, 12.12kg of vinyl acetate, 1.05kg of methacrylic acid, 0.42kg of diacetone acrylamide, 1.33kg of nonylphenol polyoxyethylene ether The sodium lauryl sulfate of 0.66kg and the isooctyl acrylate of 12.12kg join the deio...

Embodiment 2

[0066] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 51.8kg of deionized water; 13.46kg of water-based neoprene latex; 10.02kg of butyl acrylate; 14.02 kg kg of vinyl acetate; 10.43 kg of isooctyl acrylate; 1.43 kg of methacrylic acid; 0.23 kg of polyvinyl alcohol; 1.78 kg of nonylphenol ethoxylates; 0.89 kg of sodium lauryl sulfate; 0.076 kg of sodium bicarbonate; 0.15 kg of sodium persulfate; 0.48 kg of diacetone acrylamide; 0.24 kg of succinic acid dihydrazide; 0.028 kg of tert-butyl hydroperoxide;

[0067] Its preparation method comprises the following steps:

[0068] 1. 13.46kg of water-based neoprene latex, 10.02kg of butyl acrylate, 14.02kg of vinyl acetate, 1.07kg of methacrylic acid, 0.48kg of diacetone acrylamide, 1.53kg of nonylphenol polyoxyethylene ether , 0.76kg of sodium lauryl sulfate and 10.43kg of isooctyl acrylate are added to ...

Embodiment 3

[0076] A kind of vinegar-acrylic emulsion modified by self-crosslinking water-based neoprene latex at room temperature is composed of the following components, specifically comprising: 47.68kg of deionized water; 14.27kg of water-based neoprene latex; 11.92kg of butyl acrylate; 15.92kg kg of vinyl acetate; 10.99kg of isooctyl acrylate; 1.45kg of acrylamide; 0.25kg of polyvinyl alcohol; 2.01kg of nonylphenol ethoxylates, 1.005kg of sodium lauryl sulfate; 0.0815kg 0.17kg of ammonium persulfate; 0.53kg of diacetone acrylamide; 0.265kg of adipic dihydrazide; 0.03kg of tert-butyl hydroperoxide;

[0077] Its preparation method comprises the following steps:

[0078] 1. 14.27kg of water-based neoprene latex, 11.92kg of butyl acrylate, 15.92kg of vinyl acetate, 1.0875kg of acrylamide, 0.53kg of diacetone acrylamide, 1.72kg of nonylphenol polyoxyethylene ether, Add 0.86kg of sodium lauryl sulfate and 10.99kg of isooctyl acrylate into 31.00kg of deionized water, and stir and emulsify t...

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