阅读说明：本技术 一种双组份水溶性环保喷胶及其制备方法 (Two-component water-soluble environment-friendly spray adhesive and preparation method thereof ) 是由 罗斌 李军 张存刚 于 2018-08-24 设计创作，主要内容包括：一种双组份水溶性环保喷胶及其制备方法,属于喷胶制备领域,由如下重量份数的物质组成：A组分：水性氯丁胶乳70-90份,丙烯酸乳液10-20份,乙烯-醋酸乙烯共聚物乳液10-20份,十二烷基苯磺酸钠2-10份；B组分：改性松香乳液30-40份,萜烯增粘乳液10-20份,萜烯酚乳液20-30份,异氰酸酯类2-4份,聚氨酯缔合型增稠剂5-10份,水性消泡剂0.2-0.8份,去离子水30-40份；所述的A和B组分的质量比为3-5:2。本发明环保无毒,不含有机溶剂及其它有害物质,初期粘力大,耐热耐老化性能优,使用面广。(A two-component water-soluble environment-friendly spray adhesive and a preparation method thereof belong to the field of spray adhesive preparation, and are composed of the following substances in parts by weight: the component A comprises: 70-90 parts of water-based neoprene latex, 10-20 parts of acrylic emulsion, 10-20 parts of ethylene-vinyl acetate copolymer emulsion and 2-10 parts of sodium dodecyl benzene sulfonate; and B component: 30-40 parts of modified rosin emulsion, 10-20 parts of terpene tackifying emulsion, 20-30 parts of terpene phenol emulsion, 2-4 parts of isocyanates, 5-10 parts of polyurethane associated thickener, 0.2-0.8 part of water-based defoamer and 30-40 parts of deionized water; the mass ratio of the component A to the component B is 3-5: 2. The invention is environment-friendly and nontoxic, does not contain organic solvents and other harmful substances, has large initial adhesion, excellent heat resistance and aging resistance and wide application range.)

1. The two-component water-soluble environment-friendly spray adhesive is characterized in that: the composition comprises the following substances in parts by weight:

the component A comprises: 70-90 parts of water-based neoprene latex, 10-20 parts of acrylic emulsion, 10-20 parts of ethylene-vinyl acetate copolymer emulsion and 2-10 parts of sodium dodecyl benzene sulfonate;

and B component: 30-40 parts of modified rosin emulsion, 10-20 parts of terpene tackifying emulsion, 20-30 parts of terpene phenol emulsion, 2-4 parts of isocyanates, 5-10 parts of polyurethane associated thickener, 0.2-0.8 part of water-based defoamer and 30-40 parts of deionized water;

the mass ratio of the component A to the component B is 3-5: 2.

2. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the water-based neoprene latex is high-crystallization rate neoprene latex, the viscosity is less than 150cps, and the content is more than 50%.

3. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the acrylic emulsion has solid content of more than 45 percent, pH value of more than 8 and particle size of less than or equal to 0.5 micron.

4. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the ethylene-vinyl acetate copolymer emulsion is high-vinyl acetate content emulsion, the solid content is more than 50 percent, and the particle size of the emulsion is less than or equal to 0.5 micron.

5. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the modified rosin emulsion has a solid content of 50 percent, a matrix resin softening point of 110-120 ℃, and an emulsion particle size of less than or equal to 0.5 micron.

6. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the solid content of the terpene tackifying emulsion is 60 percent of emulsion, the pH value is 6-8, and the softening point is 120 ℃.

7. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the solid content of the terpene-phenol emulsion is 50 percent of the emulsion, the softening point is 150 ℃, and the particle size of the emulsion is less than or equal to 0.5 micron.

8. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the isocyanate is water dispersible HDI type isocyanate.

9. The two-component water-soluble environment-friendly spray adhesive according to claim 1, characterized in that: the aqueous defoaming agent is polyether aqueous defoaming agent.

10. The preparation method of the two-component water-soluble environment-friendly spray adhesive is characterized by comprising the following steps:

the method comprises the following steps: weighing the water-based neoprene latex, the acrylic emulsion, the ethylene-vinyl acetate copolymer emulsion and the sodium dodecyl benzene sulfonate according to the mass parts, firstly adding the water-based neoprene latex, the acrylic emulsion and the ethylene-vinyl acetate copolymer emulsion into a container, stirring for 10-20 minutes under the stirring condition of 300-400 revolutions per minute, adding the sodium dodecyl benzene sulfonate, stirring for 10-15 minutes, and taking out to obtain a component A;

weighing the modified rosin emulsion, the terpene tackifying emulsion, the terpene phenol emulsion, the isocyanates, the polyurethane associative thickener, the aqueous defoamer and the deionized water according to the mass parts, adding the deionized water, the modified rosin emulsion, the terpene tackifying emulsion and the terpene phenol emulsion into a container, stirring for 4-8 minutes under the stirring condition of 200 revolutions per minute and 400 revolutions per minute, adding the isocyanates, stirring for 2-4 minutes, adding the polyurethane associative thickener and the aqueous defoamer, stirring for 20-30 minutes, and taking out to obtain a component B;

and step three, placing the component A into a container, slowly dripping the component B into the component A under the stirring condition of 600-800 revolutions per minute, continuing stirring for 25-35 minutes after dripping is finished, and taking out to obtain a finished product.

Technical Field

The invention belongs to the field of spray glue preparation, and particularly relates to a two-component water-soluble environment-friendly spray glue and a preparation method thereof.

Background

The spray glue is a common glue in daily life and industrial production, the spray glue on the market mainly adopts solvent-based spray glue, the spray glue of the water-soluble glue formulation contains a large amount of organic solvents, and the long-term use of the spray glue not only pollutes the environment, but also has great harm to human bodies. In order to solve the problems, various environment-friendly water-based spray adhesives have been developed at present, and the common spray adhesives are water-based polyurethane spray adhesives, wherein the water-based neoprene spray adhesives have the advantages of no pollution to the environment, no harm to human health, no toxicity, no odor and the like, and are one of the development directions of the adhesive industry. However, the water-based spray adhesive has poor adhesive property between the sponge and other substances, thereby influencing the application range of the water-based spray adhesive.

Disclosure of Invention

The invention provides a two-component water-soluble environment-friendly spray adhesive and a preparation method thereof, which are used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

the two-component water-soluble environment-friendly spray adhesive is composed of the following substances in parts by weight:

the component A comprises: 70-90 parts of water-based neoprene latex, 10-20 parts of acrylic emulsion, 10-20 parts of ethylene-vinyl acetate copolymer emulsion and 2-10 parts of sodium dodecyl benzene sulfonate;

and B component: 30-40 parts of modified rosin emulsion, 10-20 parts of terpene tackifying emulsion, 20-30 parts of terpene phenol emulsion, 2-4 parts of isocyanates, 5-10 parts of polyurethane associated thickener, 0.2-0.8 part of water-based defoamer and 30-40 parts of deionized water;

the mass ratio of the component A to the component B is 3-5: 2. .

The two-component water-soluble environment-friendly spray adhesive is characterized in that the water-based neoprene latex is high-crystallization-rate neoprene latex, the viscosity is less than 150cps, and the content is more than 50%.

The two-component water-soluble environment-friendly spray adhesive and the preparation method thereof have the advantages that the solid content of the acrylic emulsion is more than 45%, the pH value is more than 8, and the particle size of the emulsion is less than or equal to 0.5 micrometer.

The two-component water-soluble environment-friendly spray adhesive is characterized in that the ethylene-vinyl acetate copolymer emulsion is high-vinyl acetate content emulsion, the solid content is more than 50%, and the particle size of the emulsion is less than or equal to 0.5 micrometer.

The two-component water-soluble environment-friendly spray adhesive has the advantages that the modified rosin emulsion has the solid content of 50 percent, the softening point of the matrix resin is 110-120 ℃, and the particle size of the emulsion is less than or equal to 0.5 micron.

The two-component water-soluble environment-friendly spray adhesive has the advantages that the solid content of the terpene tackifying emulsion is 60% of emulsion, the pH value is 6-8, and the softening point is 120 ℃.

The two-component water-soluble environment-friendly spray adhesive has the advantages that the solid content of the terpene-phenol emulsion is 50% of the emulsion, the softening point is 150 ℃, and the particle size of the emulsion is less than or equal to 0.5 micrometer.

The two-component water-soluble environment-friendly spray adhesive is characterized in that the isocyanate is water-dispersible HDI isocyanate.

The two-component water-soluble environment-friendly spray adhesive is characterized in that the water-based defoaming agent is a polyether water-based defoaming agent.

A preparation method of a two-component water-soluble environment-friendly spray adhesive comprises the following steps:

the method comprises the following steps: weighing the water-based neoprene latex, the acrylic emulsion, the ethylene-vinyl acetate copolymer emulsion and the sodium dodecyl benzene sulfonate according to the mass parts, firstly adding the water-based neoprene latex, the acrylic emulsion and the ethylene-vinyl acetate copolymer emulsion into a container, stirring for 10-20 minutes under the stirring condition of 300-400 revolutions per minute, adding the sodium dodecyl benzene sulfonate, stirring for 10-15 minutes, and taking out to obtain a component A;

weighing the modified rosin emulsion, the terpene tackifying emulsion, the terpene phenol emulsion, the isocyanates, the polyurethane associative thickener, the aqueous defoamer and the deionized water according to the mass parts, adding the deionized water, the modified rosin emulsion, the terpene tackifying emulsion and the terpene phenol emulsion into a container, stirring for 4-8 minutes under the stirring condition of 200 revolutions per minute and 400 revolutions per minute, adding the isocyanates, stirring for 2-4 minutes, adding the polyurethane associative thickener and the aqueous defoamer, stirring for 20-30 minutes, and taking out to obtain a component B;

and step three, placing the component A into a container, slowly dripping the component B into the component A under the stirring condition of 600-800 revolutions per minute, continuing stirring for 25-35 minutes after dripping is finished, and taking out to obtain a finished product.

The invention has the advantages that: the invention is environment-friendly and nontoxic, does not contain organic solvents and other harmful substances, has large initial adhesion, excellent heat resistance and aging resistance and wide application range. The component A main emulsion is prepared by compounding water-based neoprene latex, acrylic emulsion and ethylene-vinyl acetate copolymer emulsion, so that the compatibility of the component A main emulsion on various materials is improved, and the adhesion on various different materials is realized; the application range is enlarged; meanwhile, the introduction of the terpene tackifying emulsion in the component B improves the initial adhesion and the heat aging resistance of the adhesive, and the introduction of the terpene phenol emulsion greatly helps to improve the initial and later adhesive strength and the heat resistance of the adhesive.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention are described more clearly and completely in the following embodiments, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Weighing the following materials in parts by weight:

the component A comprises: 70 g of water-based neoprene latex, 10 g of acrylic emulsion, 10 g of ethylene-vinyl acetate copolymer emulsion and 2 g of sodium dodecyl benzene sulfonate;

and B component: 30 g of modified rosin emulsion, 10 g of terpene tackifying emulsion, 20 g of terpene phenol emulsion, 2 g of isocyanate, 5 g of polyurethane associative thickener, 0.2 g of water-based defoamer and 30 g of deionized water;

then the following steps are carried out:

the method comprises the following steps: firstly, adding water-based neoprene latex, acrylic emulsion and ethylene-vinyl acetate copolymer emulsion into a container, stirring for 10 minutes under the stirring condition of 300 revolutions per minute, adding sodium dodecyl benzene sulfonate, stirring for 10 minutes, and taking out to obtain a component A;

adding deionized water, modified rosin emulsion, terpene tackifying emulsion and terpene phenol emulsion into a container, stirring for 4 minutes under the stirring condition of 200 revolutions per minute, adding isocyanate, stirring for 2 minutes, adding polyurethane associative thickener and water-based defoamer, stirring for 20 minutes, and taking out to obtain a component B;

and step three, weighing 60 g of the component A and 40 g of the component B, firstly putting the component A into a container, slowly dropwise adding the component B under the stirring condition of 600 revolutions per minute, continuously stirring for 25 minutes after dropwise adding is finished, and taking out to obtain a finished product.