Water-based flocking adhesive for improving bonding performance of PP (polypropylene) and preparation method of water-based flocking adhesive

Abstract

The invention relates to a water-based flocking adhesive for improving the bonding performance of PP and a preparation method of the water-based flocking adhesive, and belongs to the field of water-based flocking adhesives for automotive upholstery. The water-based flocking adhesive is prepared from the following components in parts by weight: 30 to 40 parts of EVA (Ethylene-Vinyl Acetate) emulsion, 1 to 3 parts of pH (Potential of Hydrogen) regulator, 35 to 50 parts of water-based acrylic emulsion, 10 to 30 parts of water-based polyurethane emulsion, 3 to 5 parts of water-based polyolefin emulsion, 1 to 5 parts of silane coupling agent, 0.1 to 0.5 part of bactericide, 0.1 to 0.5 part of wetting agent, 0.5 to 1 part of defoaming agent and 1 to 3 parts of thickening agent. According to the water-based flocking adhesive, the water-based polyolefin emulsion and the silane coupling agent are used at the same time, so that the bonding force and the adhesive force to a PP base material can be improved.

Description

Technical Field

[0001] This invention belongs to the field of water-based flocking adhesives for automotive interior parts, and specifically relates to a water-based flocking adhesive with good adhesion to PP substrates and its preparation method. Background Technology

[0002] Water-based flocking adhesive for automotive interior parts is mainly used for flocking in automotive glove boxes. However, existing water-based flocking adhesives often use water-based resins, which can lead to flock layer detachment. They also often have poor adhesion and bonding strength to PP substrates during use.

[0003] In view of this, the present invention is hereby proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a water-based flocking adhesive and its preparation method for improving the bonding performance of PP, which can enhance the bonding strength and adhesion to PP substrates, thereby solving the above-mentioned technical problems existing in the prior art.

[0005] The objective of this invention is achieved through the following technical solution: A water-based flocking adhesive for improving the bonding properties of PP, comprising the following components in parts by weight: 30-40 parts of EVA emulsion pH adjuster 1-3 parts 35-50 parts of water-based acrylic emulsion. 10-30 parts of waterborne polyurethane emulsion, 3-5 parts of waterborne polyolefin emulsion 1-5 parts of silane coupling agent 0.1 to 0.5 parts of bactericide, Wetting agent 0.1-0.5 parts, Defoamer 0.5-1 part, Thickener 1-3 parts.

[0006] Preferably, in the above-mentioned water-based flocking adhesive, the water-based polyolefin emulsion is one or both of Mitsubishi Chemical BW5600 and BW5800.

[0007] Preferably, in the above-mentioned water-based flocking adhesive, the silane coupling agent is one or more of KH550, KH560 and KH792.

[0008] Preferably, in the above-mentioned water-based flocking adhesive, the EVA emulsion is one or both of PetroChina 707 emulsion and Dalian Chemical DA102.

[0009] Preferably, in the above-mentioned water-based flocking adhesive, the pH adjuster is one or both of AMP-95 and ammonia water.

[0010] Preferably, in the above-mentioned water-based flocking adhesive, the water-based acrylic emulsion is one or both of Gaomeng PA1090 emulsion and YH620S emulsion.

[0011] Preferably, in the above-mentioned water-based flocking adhesive, the water-based polyurethane emulsion is one or both of Wanhua 1630C emulsion and Wanhua 1630A emulsion.

[0012] Preferably, in the above-mentioned water-based flocking adhesive, the bactericide is at least one of Colier MB-5 and McCann 633; The defoamer is at least one of AFCONA-2590 and DIG 810.

[0013] Preferably, in the above-mentioned water-based flocking adhesive, the thickener is at least one of Borchi Gel 0630 thickener and Hefei Anke HEUR-A; The wetting agent is at least one of Klein SF8 and BYK346 wetting agents.

[0014] A method for preparing the water-based flocking adhesive for improving the bonding performance of PP according to the present invention includes:

[0015] Take the raw materials according to the formula of the water-based flocking adhesive described in this invention;

[0016] The EVA emulsion from the raw materials is added to a dispersion tank. A pH adjuster is added to adjust the pH value of the emulsion to neutral. Then, waterborne polyurethane emulsion and waterborne acrylic emulsion are added and stirred at 150 r / min for 15 min. Waterborne polyolefin emulsion and silane coupling agent are added and stirred at 300 r / min for 30 min. Bactericide, wetting agent and defoamer are added in sequence and stirred at 300 r / min for another 30 min. Finally, thickener is added in multiple batches to obtain a waterborne adhesive with a suitable viscosity, which is the waterborne flocking adhesive that improves the bonding performance of PP.

[0017] Compared with the prior art, the water-based flocking adhesive for improving the bonding performance of PP and its preparation method provided by the present invention have the following beneficial effects: By simultaneously adding specific amounts of water-based polyolefin and silane coupling agent, the adhesion and bonding performance of the adhesive to the PP substrate can be effectively improved. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the specific content of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments, which do not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0019] First, the following explanations are provided for the terms that may be used in this article: The term "and / or" means that either or both can be achieved simultaneously. For example, X and / or Y means that it includes both "X" or "Y" as well as the three cases of "X and Y".

[0020] The terms "comprising," "including," "containing," "having," or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.) should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0021] The term "composed of" excludes any technical features not expressly listed. When used in a claim, it closes the claim to exclude all technical features other than those expressly listed, except for associated conventional impurities. If the term appears only in a clause of a claim, it limits the claim to the elements expressly listed in that clause; elements recited in other clauses are not excluded from the overall claim.

[0022] The term "parts by mass" indicates the mass ratio between multiple components. For example, if component X is described as x parts by mass and component Y as y parts by mass, then the mass ratio of component X to component Y is x:y. One part by mass can represent any mass; for example, one part by mass can be expressed as 1 kg or 3.1415926 kg, etc. The sum of the parts by mass of all components is not necessarily 100 parts; it can be greater than 100 parts, less than 100 parts, or equal to 100 parts. Unless otherwise stated, parts, proportions, and percentages mentioned herein are all measured by mass.

[0023] When concentration, temperature, pressure, size, or other parameters are expressed as numerical ranges, such ranges should be understood to specifically disclose all ranges formed by any pairing of upper limits, lower limits, or preferred values ​​within that range, regardless of whether the range is explicitly stated; for example, if the numerical range "2 to 8" is stated, then that range should be interpreted to include ranges such as "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", etc. Unless otherwise stated, the numerical ranges described herein include both their endpoints and all integers and fractions within that range.

[0024] The solution provided by this invention will be described in detail below. Contents not described in detail in the embodiments of this invention are prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of this invention, they shall be performed according to conventional conditions in the art or conditions recommended by the manufacturer. Reagents or instruments used in the embodiments of this invention whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0025] This invention provides a water-based flocking adhesive for improving the bonding performance of PP, comprising the following components in parts by weight: 30-40 parts of EVA emulsion pH adjuster 1-3 parts, 35-50 parts of water-based acrylic emulsion. 10-30 parts of waterborne polyurethane emulsion, 3-5 parts of waterborne polyolefin emulsion 1-5 parts of silane coupling agent 0.1 to 0.5 parts of bactericide, Wetting agent 0.1-0.5 parts, Defoamer 0.5-1 part, Thickener 1-3 parts.

[0026] The water-based flocking adhesive of the present invention uses both a specific amount of water-based polyolefin emulsion and a specific amount of silane coupling agent, two additives used to improve the adhesion of PP, to finally obtain a water-based flocking adhesive with a suitable viscosity, which effectively improves the adhesion and bonding performance to PP substrates.

[0027] In some specific embodiments of the present invention, the aqueous polyolefin emulsion is one or both of Mitsubishi Chemical BW5600 and BW5800.

[0028] In some specific embodiments of the present invention, the silane coupling agent is one or more of KH550, KH560 and KH792.

[0029] In some specific embodiments of the present invention, the EVA emulsion is one or both of PetroChina 707 emulsion and Dalian Chemical DA102.

[0030] In some specific embodiments of the present invention, the pH adjuster is one or both of AMP-95 and ammonia water.

[0031] In some specific embodiments of the present invention, the aqueous acrylic emulsion is one or both of Gaomeng PA1090 emulsion and YH620S emulsion.

[0032] In some specific embodiments of the present invention, the aqueous polyurethane emulsion is one or both of Wanhua 1630C emulsion and Wanhua 1630A emulsion.

[0033] In some specific embodiments of the present invention, the bactericide is at least one of Collier MB-5 and McCann 633.

[0034] In some specific embodiments of the present invention, the defoamer is at least one of AFCONA-2590 and DIGIC 810.

[0035] In some specific embodiments of the present invention, the wetting agent is at least one of Klein SF8 and BYK346 wetting agents.

[0036] In some specific embodiments of the present invention, the thickener is at least one of Borchi Gel 0630 thickener and Hefei Anke HEUR-A.

[0037] This invention also provides a method for preparing the above-mentioned water-based flocking adhesive for improving the bonding performance of PP, which specifically includes the following steps: Take the raw materials according to the above formula of water-based flocking adhesive, put the EVA emulsion in the raw materials into the dispersion tank, add a certain amount of pH adjuster to adjust the pH value of the emulsion to neutral, then add water-based polyurethane and water-based acrylic and stir at 150 r / min for 15 min, add water-based polyolefin and silane coupling agent and stir at 300 r / min for 30 min, add bactericide, wetting agent and defoamer in sequence and continue stirring at 300 r / min for 30 min, and finally add thickener in small amounts several times to obtain water-based adhesive with suitable viscosity.

[0038] To more clearly demonstrate the technical solution and its effects provided by the present invention, the following detailed description of the solution provided by the embodiments of the present invention is provided with reference to specific examples.

[0039] Example 1 This embodiment provides a water-based flocking adhesive for improving the bonding performance of PP. The preparation method of the water-based flocking adhesive may include the following steps (each component is in parts by weight): 33 parts of DA102 emulsion were added to a dispersion tank, and 1.5 parts of AMP-95 were added to adjust the pH value to 7. Then, 40 parts of Gaomeng PA1090 emulsion and 15 parts of Wanhua 1630C emulsion were added and stirred at 150 r / min for 15 min. 5 parts of BW5600 waterborne polyolefin emulsion and 2 parts of KH550 were added and stirred at 300 r / min for 30 min. 0.5 parts of Collier MB-5, 0.5 parts of Klein SF8 and 0.5 parts of AFCONA-2590 defoamer were added sequentially and stirred at 300 r / min for 30 min. Finally, 2 parts of Borchi Gel0630 thickener were added in small amounts several times to obtain a waterborne flocking adhesive with a viscosity of 4000-6000 cPs and good adhesion to PP substrate.

[0040] Example 2 This embodiment provides a water-based flocking adhesive for improving the bonding performance of PP. The preparation method of the water-based flocking adhesive may include the following steps (each component is in parts by weight): Add 30 parts of 707 emulsion to a dispersion tank, add 1 part of ammonia water to adjust the pH value to 7, then add 40 parts of Gaomeng waterborne acrylic emulsion YH620S and 18 parts of Wanhua 1630C emulsion and stir at 150 r / min for 15 min. Add 3 parts of BW5600 waterborne polyolefin emulsion and 3 parts of KH792 and stir at 300 r / min for 30 min. Add 0.5 parts of Maiken 633 bactericide, 0.5 parts of BYK346 wetting agent and 1 part of Digo 810 defoamer in sequence and continue stirring at 300 r / min for 30 min. Finally, add 3 parts of Hefei Anke HEUR-A thickener in small amounts several times to obtain a waterborne flocking adhesive with a viscosity of 4000-6000 cPs and good adhesion to PP substrate.

[0041] Example 3 This embodiment provides a water-based flocking adhesive for improving the bonding performance of PP. The preparation method of the water-based flocking adhesive may include the following steps (each component is in parts by weight): 40 parts of DA102 emulsion were added to a dispersion tank, and 2 parts of AMP-95 were added to adjust the pH value to 7. Then, 35 parts of Gaomeng PA1090 emulsion and 12 parts of Wanhua 1630A emulsion were added and stirred at 150 r / min for 15 min. 5 parts of BW5800 waterborne polyolefin emulsion and 2 parts of KH560 were added and stirred at 300 r / min for 30 min. 0.5 parts of Miken 633 bactericide, 0.5 parts of BYK346 wetting agent and 0.5 parts of Digo 810 defoamer were added sequentially and stirred at 300 r / min for 30 min. Finally, 2.5 parts of Borchi Gel0630 thickener were added in small amounts several times to obtain a waterborne flocking adhesive with a viscosity of 4000-6000 cPs and good adhesion to PP substrate.

[0042] Adhesion tests were conducted on a series of water-based flocking adhesives that improve the bonding performance of PP.

[0043] Comparative Example This comparative example provides a water-based flocking adhesive, the preparation method of which may include the following steps (each component is in parts by weight): 47 parts of DA102 emulsion were added to a dispersion tank, and 2 parts of AMP-95 were added to adjust the pH value to 7. Then, 35 parts of Gaomeng PA1090 emulsion and 12 parts of Wanhua 1630A emulsion were added and stirred at 150 r / min for 15 min. Then, 0.5 parts of Miken 633 bactericide, 0.5 parts of BYK346 wetting agent and 0.5 parts of Digo 810 defoamer were added in sequence and stirred at 300 r / min for 30 min. Finally, 2.5 parts of Borchi Gel 0630 thickener were added in small amounts several times to obtain a water-based flocking adhesive with a viscosity of 4000-6000 cPs and good adhesion to PP substrate.

[0044] Adhesion performance tests were conducted on a series of water-based flocking adhesives.

[0045] Table 1 shows the adhesion test results of the water-based flocking adhesive in each embodiment and comparative example. ; Adhesion testing shall be conducted in accordance with GB / T 9286-1998.

[0046] As can be seen from Table 1 above, the water-based flocking adhesive of the present invention, by simultaneously adding specific amounts of water-based polyolefin and silane coupling agent, effectively improves the adhesion and bonding performance to PP substrates compared to the water-based flocking adhesive of the comparative example.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. The information disclosed in the background section is intended only to enhance the understanding of the overall background technology of the present invention and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art.

Claims

1. A water-based flocking adhesive for improving the bonding performance of PP, characterized in that, Includes the following components by weight: 30-40 parts of EVA emulsion pH adjuster 1-3 parts 35-50 parts of water-based acrylic emulsion. 10-30 parts of waterborne polyurethane emulsion, 3-5 parts of waterborne polyolefin emulsion 1-5 parts of silane coupling agent 0.1 to 0.5 parts of bactericide, Wetting agent 0.1-0.5 parts, Defoamer 0.5-1 part, Thickener 1-3 parts.

2. The water-based flocking adhesive for improving the bonding performance of PP according to claim 1, characterized in that, The aqueous polyolefin emulsion uses one or both of Mitsubishi Chemical's BW5600 and BW5800.

3. The water-based flocking adhesive for improving the bonding performance of PP according to claim 1, characterized in that, The silane coupling agent is one or more of KH550, KH560 and KH792.

4. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The EVA emulsion used is one or both of PetroChina 707 emulsion and Dalian Chemical DA102.

5. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The pH adjuster is one or both of AMP-95 and ammonia water.

6. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The aqueous acrylic emulsion is one or both of Gaomeng PA1090 emulsion and YH620S emulsion.

7. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The waterborne polyurethane emulsion is one or both of Wanhua 1630C emulsion and Wanhua 1630A emulsion.

8. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The bactericide is at least one of Collier MB-5 and McCann 633; The defoamer is at least one of AFCONA-2590 and DIG 810.

9. The water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-3, characterized in that, The thickener is at least one of Borchi Gel 0630 thickener and Hefei Anke HEUR-A; The wetting agent is at least one of Klein SF8 and BYK346 wetting agents.

10. A method for preparing the water-based flocking adhesive for improving the bonding performance of PP according to any one of claims 1-9, characterized in that, include: The raw materials are prepared according to the formulation of the water-based flocking adhesive according to any one of claims 1-9; The EVA emulsion from the raw materials is added to a dispersion tank. A pH adjuster is added to adjust the pH value of the emulsion to neutral. Then, waterborne polyurethane emulsion and waterborne acrylic emulsion are added and stirred at 150 r / min for 15 min. Waterborne polyolefin emulsion and silane coupling agent are added and stirred at 300 r / min for 30 min. Bactericide, wetting agent and defoamer are added in sequence and stirred at 300 r / min for another 30 min. Finally, thickener is added in multiple batches to obtain a waterborne adhesive with a suitable viscosity, which is the waterborne flocking adhesive that improves the bonding performance of PP.