阅读说明：本技术 一种沙发床垫用水性喷胶及其制备方法 (Water-based spray adhesive for sofa mattress and preparation method thereof ) 是由 朱立芳 朱嘉伟 朱同武 朱志方 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种沙发床垫用水性喷胶,包括组分A和组分B,所述组分A包括下述质量份的原料：氯丁胶乳60-80份、羟基含氟水性丙烯酸乳液20-30份、水性萜烯树脂乳液10-15份、改性粘土3-5份、增稠剂0.5-1份、消泡剂0.2-0.5份、去离子水20-30份；所述组分B为水性异氰酸酯固化剂；所述组分A和组分B的质量比为1：(0.15-0.25)。本发明还公开了沙发床垫用水性喷胶的制备方法。本发明制备的沙发床垫用水性喷胶具有优良的粘结性能和耐水性,能够有效缓解沙发、床垫因为渗水而导致的变形、发霉等问题,提高家具的品质和使用寿命。(The invention discloses an aqueous spray adhesive for a sofa mattress, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 60-80 parts of neoprene latex, 20-30 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 10-15 parts of water-based terpene resin emulsion, 3-5 parts of modified clay, 0.5-1 part of thickening agent, 0.2-0.5 part of defoaming agent and 20-30 parts of deionized water; the component B is a water-based isocyanate curing agent; the mass ratio of the component A to the component B is 1: (0.15-0.25). The invention also discloses a preparation method of the water-based spray adhesive for the sofa mattress. The water-based spray adhesive for the sofa mattress prepared by the invention has excellent bonding property and water resistance, can effectively relieve the problems of deformation, mildew and the like of the sofa and the mattress due to water seepage, improves the quality of furniture and prolongs the service life of the furniture.)

1. The water-based spray adhesive for the sofa mattress is characterized by comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 60-80 parts of neoprene latex, 20-30 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 10-15 parts of water-based terpene resin emulsion, 3-5 parts of modified clay, 0.5-1 part of thickening agent, 0.2-0.5 part of defoaming agent and 20-30 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: (0.15-0.25).

2. The water spray adhesive for sofa mattresses according to claim 1, characterized in that the preparation method of the modified clay comprises the following steps:

(1) uniformly mixing a silane coupling agent KH550, absolute ethyl alcohol and water according to a certain proportion to obtain a silane coupling agent hydrolysate;

(2) uniformly mixing 1-2% by mass of an ammonium perfluorooctanoate solution with the silane coupling agent hydrolysate according to a certain proportion to obtain a silane coupling agent-ammonium perfluorooctanoate mixed solution;

(3) and mixing clay and the silane coupling agent-ammonium perfluorooctanoate mixed solution according to a certain proportion, uniformly dispersing, heating, stirring, reacting, performing solid-liquid separation after the reaction is finished, and washing and drying the obtained solid substance to obtain the silane coupling agent-ammonium perfluorooctanoate mixed solution.

3. The water spray adhesive for sofa mattresses according to claim 2, characterized in that in step (1), the volume ratio of the silane coupling agent KH550, absolute ethanol and water is 1: (6-9): (1-2); in the step (2), the volume ratio of the ammonium perfluorooctanoate solution to the silane coupling agent hydrolysate is 1: (1-2); in the step (3), the proportion of the clay to the silane coupling agent-ammonium perfluorooctanoate mixed solution is 1 g: (8-12) mL; in the step (3), the temperature for heating, stirring and reacting is 80-90 ℃ and the time is 2-5 h.

4. The water spray adhesive for sofa mattress according to claim 2 or 3, wherein the clay is at least one of diatomite, montmorillonite and attapulgite.

5. The water spray adhesive for sofa mattresses according to any one of claims 1 to 4, characterized in that the hydroxyl-fluorine-containing water-based acrylic emulsion has a solid content of 40-60%, a hydroxyl content of 2-3%, a fluorine content of 5-10%; the solid content of the neoprene latex is 50-65%; the solid content of the aqueous terpene resin emulsion is 50-65%.

6. The water-based spray adhesive for sofa mattresses according to any one of claims 1 to 5, characterized in that the isocyanate group content of the water-based isocyanate curing agent is 15-25%.

7. The water spray for sofa mattresses according to any of claims 1-6, characterized in that the thickener is at least one of carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl starch; the defoaming agent is an organic silicon defoaming agent.

8. A method for preparing the water-based spray adhesive for sofa mattresses according to any one of claims 1 to 7, characterized by comprising the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing the modified clay, the thickening agent, the defoaming agent and the deionized water, then uniformly dispersing, then adding the neoprene latex, the hydroxyl fluorine-containing water-based acrylic emulsion and the water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

Technical Field

The invention relates to the technical field of glue spraying, in particular to a water-based glue spraying for a sofa mattress and a preparation method thereof.

Background

The spray glue can deform along with the shape of a using object, has certain cohesiveness and is difficult to flow adhesive agent. With the rapid development of economy in China, the spray glue is widely used in industries such as furniture, leather, cloth art, decorative materials and the like, and has very wide market prospect. At present, the spray glue sold in the market is mainly a solvent type, contains a large amount of organic solvent, has certain toxicity to human bodies, and can cause environmental pollution.

The water-based spray adhesive is a novel spray adhesive which is widely applied in the field of furniture manufacturing with higher requirements on safety and environmental protection performance, and has the advantages of no toxicity, no harm, low odor, safety and environmental protection. The spraying glue of the sponge substrate for furniture such as sofa, mattress and the like puts forward a high requirement on the environmental protection performance on one hand, and on the other hand, because the water resistance of the substrate is low, if the water resistance of the bonding part is poor, water vapor easily penetrates through the bonding part to enter the substrate, thereby influencing the service life of the furniture. Therefore, high requirements are put on the adhesive strength and the water resistance of the spray glue.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a water-based spray adhesive for a sofa mattress and a preparation method thereof.

The invention provides an aqueous spray adhesive for a sofa mattress, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 60-80 parts of neoprene latex, 20-30 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 10-15 parts of water-based terpene resin emulsion, 3-5 parts of modified clay, 0.5-1 part of thickening agent, 0.2-0.5 part of defoaming agent and 20-30 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: (0.15-0.25).

Preferably, the preparation method of the modified clay comprises the following steps:

(1) uniformly mixing a silane coupling agent KH550, absolute ethyl alcohol and water according to a certain proportion to obtain a silane coupling agent hydrolysate;

(2) uniformly mixing 1-2% by mass of an ammonium perfluorooctanoate solution with the silane coupling agent hydrolysate according to a certain proportion to obtain a silane coupling agent-ammonium perfluorooctanoate mixed solution;

(3) and mixing clay and the silane coupling agent-ammonium perfluorooctanoate mixed solution according to a certain proportion, uniformly dispersing, heating, stirring, reacting, performing solid-liquid separation after the reaction is finished, and washing and drying the obtained solid substance to obtain the silane coupling agent-ammonium perfluorooctanoate mixed solution.

Preferably, in the step (1), the volume ratio of the silane coupling agent KH550 to the absolute ethyl alcohol to the water is 1: (6-9): (1-2); in the step (2), the volume ratio of the ammonium perfluorooctanoate solution to the silane coupling agent hydrolysate is 1: (1-2); in the step (3), the proportion of the clay to the silane coupling agent-ammonium perfluorooctanoate mixed solution is 1 g: (8-12) mL; in the step (3), the temperature for heating, stirring and reacting is 80-90 ℃ and the time is 2-5 h.

Preferably, the clay is at least one of diatomite, montmorillonite and attapulgite.

Preferably, the hydroxyl fluorine-containing water-based acrylic emulsion has the solid content of 40-60%, the hydroxyl content of 2-3% and the fluorine content of 5-10%; the solid content of the neoprene latex is 50-65%; the solid content of the aqueous terpene resin emulsion is 50-65%.

Preferably, the isocyanate group content of the aqueous isocyanate curing agent is 15 to 25%.

Preferably, the thickening agent is at least one of carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl starch; the defoaming agent is an organic silicon defoaming agent.

The preparation method of the water-based spray adhesive for the sofa mattress comprises the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing the modified clay, the thickening agent, the defoaming agent and the deionized water, then uniformly dispersing, then adding the neoprene latex, the hydroxyl fluorine-containing water-based acrylic emulsion and the water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

The invention has the following beneficial effects:

according to the invention, neoprene latex, hydroxyl fluorine-containing water-based acrylic emulsion and water-based terpene resin emulsion are compounded to be used as a glue spraying resin base material, and a proper amount of modified clay obtained by synergistic modification of a silane coupling agent KH550 and ammonium perfluorooctanoate is added to be used as a filling agent, so that a proper amount of fluorine groups are introduced into the glue spraying, the water resistance of the glue spraying is obviously improved, meanwhile, the hydroxyl fluorine-containing water-based acrylic emulsion contains a proper amount of hydroxyl active groups, and the modified clay contains a proper amount of amino active groups on the surface modified by the silane coupling agent KH550, can react with a water-based isocyanate curing agent of the component B, improves the compatibility of the hydroxyl fluorine-containing water-based acrylic emulsion and the modified clay in a system, enables the glue spraying to have good stability, can also improve the cohesive force of the glue spraying, and enables the glue. The water-based spray adhesive for the sofa mattress prepared by the invention has excellent bonding property and water resistance, can effectively relieve the problems of deformation, mildew and the like of the sofa and the mattress due to water seepage, improves the quality of furniture and prolongs the service life of the furniture.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

In the following examples and comparative examples, the type of the aqueous acrylic emulsion containing hydroxyl group and fluorine was HD-827, which is a Tandata virgin material, and has a solid content of 45%, a hydroxyl group content of 2.7%, and a fluorine content of 9%; the hydroxyl water-based acrylic emulsion is made of a Dada new material HD-8426, the solid content is 42 percent, and the hydroxyl content is 2.8 percent; the type of the water-based isocyanate curing agent is Jinhuasheng J3100, and the content of isocyanate groups is 18 percent; the neoprene emulsion is DENKA ALX-600 in model, and the solid content is 60 percent; the water-based terpene resin emulsion is of a type of Jitian chemical industry 988, and the solid content is 60%. The rest raw materials are all conventional products sold in the market.

Example 1

The water-based spray adhesive for the sofa mattress comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 60 parts of neoprene latex, 20 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 10 parts of water-based terpene resin emulsion, 3 parts of modified clay, 0.5 part of hydroxyethyl cellulose, 0.2 part of organic silicon defoamer and 20 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: 0.15.

the preparation method of the modified clay comprises the following steps:

(1) mixing a silane coupling agent KH550, absolute ethyl alcohol and water according to a volume ratio of 1: 6: 1, uniformly mixing to obtain silane coupling agent hydrolysate;

(2) the method comprises the following steps of mixing 1% by mass of an ammonium perfluorooctanoate solution and 1% by volume of a silane coupling agent hydrolysate: 1, uniformly mixing to obtain a silane coupling agent-ammonium perfluorooctanoate mixed solution;

(3) mixing montmorillonite and a silane coupling agent-ammonium perfluorooctanoate mixed solution according to the proportion of 1 g: 8mL of the mixture is uniformly dispersed after being mixed, the mixture is heated and stirred at the temperature of 80 ℃ for reaction for 5 hours, the reaction is finished and then the centrifugation is carried out, and the obtained solid matter is washed and dried, thus obtaining the solid-phase catalyst.

The preparation method of the water-based spray adhesive for the sofa mattress comprises the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing the modified clay, hydroxyethyl cellulose, an organic silicon defoamer and deionized water, then uniformly dispersing, then adding neoprene latex, hydroxyl fluorine-containing water-based acrylic emulsion and water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

Example 2

The water-based spray adhesive for the sofa mattress comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 80 parts of neoprene latex, 30 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 15 parts of water-based terpene resin emulsion, 5 parts of modified clay, 1 part of hydroxyethyl cellulose, 0.5 part of organic silicon defoamer and 30 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: 0.25.

the preparation method of the modified clay comprises the following steps:

(1) mixing a silane coupling agent KH550, absolute ethyl alcohol and water according to a volume ratio of 1: 9: 2, uniformly mixing to obtain silane coupling agent hydrolysate;

(2) the method comprises the following steps of mixing an ammonium perfluorooctanoate solution with the mass fraction of 2% and a silane coupling agent hydrolysate according to the volume ratio of 1: 2, uniformly mixing to obtain a silane coupling agent-ammonium perfluorooctanoate mixed solution;

(3) mixing montmorillonite and a silane coupling agent-ammonium perfluorooctanoate mixed solution according to the proportion of 1 g: and mixing in a proportion of 12mL, uniformly dispersing, heating and stirring at 90 ℃ for reaction for 2h, centrifuging after the reaction is finished, and washing and drying the obtained solid substance to obtain the catalyst.

The preparation method of the water-based spray adhesive for the sofa mattress comprises the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing the modified clay, hydroxyethyl cellulose, an organic silicon defoamer and deionized water, then uniformly dispersing, then adding neoprene latex, hydroxyl fluorine-containing water-based acrylic emulsion and water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

Example 3

The water-based spray adhesive for the sofa mattress comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 73 parts of neoprene latex, 25 parts of hydroxyl fluorine-containing water-based acrylic emulsion, 12 parts of water-based terpene resin emulsion, 4 parts of modified clay, 0.8 part of hydroxyethyl cellulose, 0.4 part of organic silicon defoamer and 25 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: 0.2.

the preparation method of the modified clay comprises the following steps:

(1) mixing a silane coupling agent KH550, absolute ethyl alcohol and water according to a volume ratio of 1: 7.5: 1.5, uniformly mixing to obtain silane coupling agent hydrolysate;

(2) 1.5 percent of ammonium perfluorooctanoate solution and silane coupling agent hydrolysate according to the volume ratio of 1: 1.5, uniformly mixing to obtain a silane coupling agent-ammonium perfluorooctanoate mixed solution;

(3) mixing montmorillonite and a silane coupling agent-ammonium perfluorooctanoate mixed solution according to the proportion of 1 g: and mixing in a ratio of 9mL, uniformly dispersing, heating and stirring at 85 ℃ for reaction for 4 hours, centrifuging after the reaction is finished, and washing and drying the obtained solid substance to obtain the catalyst.

The preparation method of the water-based spray adhesive for the sofa mattress comprises the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing the modified clay, hydroxyethyl cellulose, an organic silicon defoamer and deionized water, then uniformly dispersing, then adding neoprene latex, hydroxyl fluorine-containing water-based acrylic emulsion and water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

Comparative example 1

The water-based spray adhesive for the sofa mattress comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 73 parts of neoprene latex, 25 parts of hydroxyl water-based acrylic emulsion, 12 parts of water-based terpene resin emulsion, 4 parts of montmorillonite, 0.8 part of hydroxyethyl cellulose, 0.4 part of organic silicon defoamer and 25 parts of deionized water;

the component B is a water-based isocyanate curing agent;

the mass ratio of the component A to the component B is 1: 0.2.

the preparation method of the water-based spray adhesive for the sofa mattress comprises the following steps:

s1, weighing the raw materials of the component A according to the mass parts, firstly mixing montmorillonite, hydroxyethyl cellulose, an organic silicon defoamer and deionized water, then uniformly dispersing, then adding neoprene latex, hydroxyl water-based acrylic emulsion and water-based terpene resin emulsion, and uniformly stirring to obtain the component A;

s2, weighing the raw materials of the component A and the component B according to the proportion, respectively storing the raw materials in isolation, and mixing the component A and the component B when in use.

Examples 1 to 3 andthe spray glue prepared in the comparative example 1 is subjected to a performance test, wherein the specific method for the stability test is as follows: sealing the sprayed glue, storing for a certain time at 25 deg.C and 50% humidity, and stabilizing if no precipitate, delamination or gel exists; the specific method for testing the bonding performance comprises the following steps: spraying and mixing the component A and the component B by a special spray gun for the two-component aqueous adhesive, and then spraying the mixture on the bonding surfaces of two foam plastic (sponge base material) test pieces, wherein the spraying amount is 0.04kg/m²Bonding the bonding surfaces of the two test pieces, applying pressure of 0.4MPa, keeping for 5s, and performing 180-degree peel strength test by using a peel strength tester 24h after pressure relief, wherein the test pieces meet the specification of GB/T10802-; the specific method for testing the water resistance comprises the following steps: preparing a bonded test piece according to the steps of bonding property testing, applying pressure of 0.4MPa, keeping for 5s, and testing the contact angle of water to the adhesive film on the surface of the test piece 24h after pressure relief. The results are shown in table 1:

TABLE 1 spray performance test results

	Example 1	Example 2	Example 3	Comparative example 1
					Stability of	More than 9 months	More than 9 months	More than 9 months	More than 9 months
Peel strength	Substrate destruction	Substrate destruction	Substrate destruction	Substrate destruction
					Contact angle (°)	124	122	127	108

As can be seen from Table 1, the spray glue of the invention has good storage stability and bonding strength, and the contact angle between the formed glue film and water is obviously increased, which shows that the water has poor wetting effect on the glue film, the hydrophobic effect on the surface of the glue film is good, and the spray glue has excellent water resistance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.