Adhesive with good adhesive property

Abstract

The invention discloses an adhesive with good adhesive performance, and belongs to the field of adhesives, the adhesive comprises a main agent, an auxiliary agent and a viscosity enhancer, the main agent comprises novolac epoxy resin and polyvinyl alcohol, and the high-performance novolac epoxy resin and high-molecular compound polyvinyl alcohol with good water solubility and adhesive performance are used as raw materials to prepare the adhesive with good adhesive performance. The strength and durability of the adhesive prepared by heating, stirring and mixing various auxiliary agents to form a cross-linked structure can be improved, and meanwhile, the bonding strength of the adhesive can be effectively improved by adding various viscosity enhancers such as the reinforced curing agent, the reinforced filling agent, the inorganic whisker agent, the fiber agent and the silane coupling agent, so that the service life of the adhesive is prolonged, and the service life of the adhesive is prolonged. Therefore, the adhesive has good adhesive performance, on the premise that the adhesive strength of the adhesive is effectively guaranteed, the adhesive object of the adhesive has no limitation any more, and the adhesive can be flexibly applied to various fields.

Description

Technical Field

[0001] This invention relates to the field of adhesives, and particularly to an adhesive with good bonding properties. Background Technology

[0002] An adhesive is a substance with excellent bonding properties. It connects objects by adhering to surfaces through adhesive forces and cohesive forces.

[0003] Adhesive bonding is a technique that joins the surfaces of homogeneous or heterogeneous objects together using adhesives. It features continuous stress distribution, light weight, sealing, and low processing temperatures in most cases. Adhesive bonding is particularly suitable for joining components of different materials, thicknesses, ultra-thin dimensions, and complex structures. Adhesives have seen the fastest development in modern times and have a wide range of applications. There are many ways to classify adhesives. Based on application method, they can be divided into thermosetting, hot-melt, room-temperature curing, and pressure-sensitive adhesives; based on application object, they can be divided into structural, non-structural, or specialty adhesives; and based on bonding form, they can be divided into water-soluble, water-emulsion, solvent-based, and various solid types. Synthetic chemists often prefer to classify adhesives according to the chemical composition of the binder.

[0004] In the existing technology, traditional adhesives are mainly prepared by mixing one or two polymers with good adhesion and wetting properties with various additives. Since there are no additional additives in the adhesive to improve the bonding performance, and the bonding performance of the adhesive is mainly determined by the main agent, the bonding performance of the adhesive is poor and the bonding strength cannot be effectively guaranteed, which limits the objects that the adhesive can bond. Summary of the Invention

[0005] The main objective of this invention is to provide an adhesive with good bonding properties, which can effectively solve the problems in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An adhesive with good bonding properties includes a main agent, additives, and a tack enhancer. The main agent includes phenolic epoxy resin and polyvinyl alcohol. The additives include curing agents, diluents, plasticizers, fillers, initiators, thickeners, antioxidants, polymerization inhibitors, stabilizers, complexing agents, emulsifiers, and crosslinking agents. The tack enhancer includes reinforcing curing agents, reinforcing fillers, inorganic whisker agents, fiber agents, and silane coupling agents.

[0008] Preferably, the phenolic epoxy resin in the main agent is in the proportion of 50 to 70 parts by weight, and the polyvinyl alcohol is in the proportion of 30 to 50 parts by weight.

[0009] Preferably, the additives comprise 5 to 10 parts by weight of the curing agent, 5 to 10 parts by weight of the diluent, 3 to 6 parts by weight of the plasticizer, 2 to 4 parts by weight of the filler, 3 to 7 parts by weight of the initiator, 8 to 11 parts by weight of the thickener, 7 to 10 parts by weight of the antioxidant, 4 to 9 parts by weight of the polymerization inhibitor, 1 to 2 parts by weight of the stabilizer, 2 to 6 parts by weight of the complexing agent, 2 to 5 parts by weight of the complexing agent, and 10 to 17 parts by weight of the crosslinking agent.

[0010] Preferably, the weight ratio of the reinforcing curing agent in the viscous reinforcing agent is 15 to 20 parts, the weight ratio of the reinforcing filler is 12 to 17 parts, the weight ratio of the inorganic whisker agent is 9 to 13 parts, the weight ratio of the fiber agent is 2 to 4 parts, and the weight ratio of the silane coupling agent is 7 to 13 parts.

[0011] Preferably, the reinforcing curing agent is one of dicyandiamide, m-phenylenediamine, and linear phenolic resin.

[0012] Preferably, the reinforcing filler is one of iron oxide powder, iron powder, aluminum powder, zinc powder, silica, wollastonite powder, and alumina.

[0013] Preferably, the inorganic whisker agent is one of zinc oxide whiskers, calcium sulfate whiskers, calcium carbonate whiskers, aluminum borate whiskers, titanium-based whiskers, hydroxyapatite whiskers, magnesium hydroxide whiskers, basic magnesium sulfate whiskers, and silicon carbide whiskers.

[0014] Preferably, the fiber agent is one of glass fiber, carbon fiber, aromatic polyamide fiber, vinylon fiber, polyvinyl alcohol fiber, polyphenylene sulfide fiber, stainless steel fiber, basalt fiber, and pyrite fiber.

[0015] Preferably, the silane coupling agent is one of KH-560, KH-550, KH-580, KH-590, KH-792, Nanda-42, Nanda-73, A-186, and A-1160.

[0016] A method for preparing an adhesive with good bonding properties includes the following steps:

[0017] Step 1: Stirring the main agent: Add phenolic epoxy resin and polyvinyl alcohol to the reaction vessel according to the weight ratio and stir thoroughly. Set the temperature of the reaction vessel to 30 degrees Celsius to 40 degrees Celsius, the stirring speed to 2,500 rpm to 3,500 rpm, and the stirring time to 30 minutes to 1 hour.

[0018] Step 2, Adding and Mixing Additives: After the main agent is stirred, add the curing agent, diluent, plasticizer, filler, initiator, thickener, antioxidant, polymerization inhibitor, stabilizer, complexing agent, emulsifier and crosslinking agent to the reaction vessel in the following weight proportions and stir to mix. Set the temperature of the reaction vessel to 25 degrees Celsius to 30 degrees Celsius, keep the stirring speed constant, and set the stirring time to 1 hour to 1.5 hours.

[0019] Step 3: Adding and mixing the adhesive reinforcing agent: After the main agent and the additives are mixed, add the reinforcing curing agent, reinforcing filler, inorganic whisker agent, fiber agent and silane coupling agent from the adhesive reinforcing agent into the reaction vessel in the weight ratio and stir to mix. Reduce the temperature of the reaction vessel to 20 to 25 degrees Celsius, and then continue stirring in the sealed reaction vessel for one to two hours to finally obtain an adhesive with good bonding properties.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In this invention, an adhesive prepared by heating and stirring a mixture of high-performance phenolic epoxy resin and polyvinyl alcohol (a high-molecular-weight compound with good water solubility and adhesive properties) as raw materials, along with various additives to form a cross-linked structure, can improve its strength and durability. Furthermore, by adding various adhesive reinforcing agents such as reinforcing curing agents, reinforcing fillers, inorganic whisker agents, fiber agents, and silane coupling agents, the adhesive strength can be effectively improved, thus giving the adhesive excellent bonding performance. With the adhesive strength effectively guaranteed, the adhesive's bonding applications are no longer limited, allowing for flexible application in various fields. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the preparation process of an adhesive with good bonding properties according to the present invention. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 As shown, an adhesive with good bonding properties includes a main agent, additives, and a tack enhancer. The main agent includes phenolic epoxy resin and polyvinyl alcohol. The additives include curing agents, diluents, plasticizers, fillers, initiators, thickeners, antioxidants, polymerization inhibitors, stabilizers, complexing agents, emulsifiers, and crosslinking agents. The tack enhancer includes reinforcing curing agents, reinforcing fillers, inorganic whisker agents, fiber agents, and silane coupling agents.

[0025] The main component comprises 50 to 70 parts by weight of phenolic epoxy resin and 30 to 50 parts by weight of polyvinyl alcohol. Among the additives, the curing agent comprises 5 to 10 parts by weight, the diluent comprises 5 to 10 parts by weight, the plasticizer comprises 3 to 6 parts by weight, the filler comprises 2 to 4 parts by weight, the initiator comprises 3 to 7 parts by weight, the thickener comprises 8 to 11 parts by weight, and the antioxidant comprises... The weight proportions are as follows: 7 to 10 parts; 4 to 9 parts by weight of polymerization inhibitor; 1 to 2 parts by weight of stabilizer; 2 to 6 parts by weight of complexing agent; 2 to 5 parts by weight of crosslinking agent; 10 to 17 parts by weight of crosslinking agent; 15 to 20 parts by weight of reinforcing curing agent in tackifier; 12 to 17 parts by weight of reinforcing filler; and [the weight proportion of inorganic whisker agent is missing from the original text]. The weight ratio of the fiber agent is 2 to 4 parts, the weight ratio of the silane coupling agent is 7 to 13 parts, the reinforcing curing agent is one of dicyandiamide, m-phenylenediamine, and linear phenolic resin, the reinforcing filler is one of iron oxide powder, iron powder, aluminum powder, zinc powder, silica, wollastonite powder, and alumina, and the inorganic whisker agent is zinc oxide whiskers, calcium sulfate whiskers, calcium carbonate whiskers, aluminum borate whiskers, titanium-based whiskers, hydroxyapatite whiskers, and hydroxide whiskers. The fiber is one of magnesium sulfate whiskers, basic magnesium sulfate whiskers, and silicon carbide whiskers; the fiber agent is one of glass fiber, carbon fiber, aromatic polyamide fiber, vinylon fiber, polyvinyl alcohol fiber, polyphenylene sulfide fiber, stainless steel fiber, basalt fiber, and silane fiber; and the silane coupling agent is one of KH-560, KH-550, KH-580, KH-590, KH-792, Nanda-42, Nanda-73, A-186, and A-1160.

[0026] A method for preparing an adhesive with good bonding properties includes the following steps:

[0027] Step 1: Stirring the main agent: Add phenolic epoxy resin and polyvinyl alcohol to the reaction vessel according to the weight ratio and stir thoroughly. Set the temperature of the reaction vessel to 30 degrees Celsius to 40 degrees Celsius, the stirring speed to 2,500 rpm to 3,500 rpm, and the stirring time to 30 minutes to 1 hour.

[0028] Step 2, Adding and Mixing Additives: After the main agent is stirred, add the curing agent, diluent, plasticizer, filler, initiator, thickener, antioxidant, polymerization inhibitor, stabilizer, complexing agent, emulsifier and crosslinking agent to the reaction vessel in the following weight proportions and stir to mix. Set the temperature of the reaction vessel to 25 degrees Celsius to 30 degrees Celsius, keep the stirring speed constant, and set the stirring time to 1 hour to 1.5 hours.

[0029] Step 3: Adding and mixing the adhesive reinforcing agent: After the main agent and the additives are mixed, add the reinforcing curing agent, reinforcing filler, inorganic whisker agent, fiber agent and silane coupling agent from the adhesive reinforcing agent into the reaction vessel in the weight ratio and stir to mix. Reduce the temperature of the reaction vessel to 20 to 25 degrees Celsius, and then continue stirring in the sealed reaction vessel for one to two hours to finally obtain an adhesive with good bonding properties.

[0030] It should be noted that the preparation of this adhesive with good bonding properties is as follows: First, according to the weight ratio of phenolic epoxy resin in the main agent being 50 to 70 parts and polyvinyl alcohol being 30 to 50 parts, the phenolic epoxy resin and polyvinyl alcohol are added to a reaction vessel and thoroughly stirred and mixed. The temperature of the reaction vessel is set to 30 to 40 degrees Celsius, the stirring speed is set to 2,500 to 3,500 rpm, and the stirring time is set to 30 minutes to 1 hour. Next, after the main agent is stirred, the following additives are added sequentially: 5 to 10 parts by weight of curing agent, 5 to 10 parts by weight of diluent, 3 to 6 parts by weight of plasticizer, and filler... The following ingredients are added to a reaction vessel by weight: 2 to 4 parts curing agent, 3 to 7 parts initiator, 8 to 11 parts thickener, 7 to 10 parts antioxidant, 4 to 9 parts polymerization inhibitor, 1 to 2 parts stabilizer, 2 to 6 parts complexing agent, 2 to 5 parts crosslinking agent, and 10 to 17 parts crosslinking agent. The mixture is stirred and mixed in the vessel. The reaction vessel temperature is set at 25 to 30 degrees Celsius, the stirring speed is constant, and the stirring time is set to [missing information]. After one to one and a half hours, once the main agent and additives are mixed, the following proportions should be made: 15 to 20 parts by weight of the reinforcing curing agent in the viscous reinforcing agent; 12 to 17 parts by weight of the reinforcing filler; 9 to 13 parts by weight of the inorganic whisker agent; 2 to 4 parts by weight of the fiber agent; and 7 to 13 parts by weight of the silane coupling agent. Select one of the following from the reinforcing curing agent: dicyandiamide, m-phenylenediamine, and linear phenolic resin; one of the following from the reinforcing filler: iron oxide powder, iron powder, aluminum powder, zinc powder, silica, wollastonite powder, and alumina; and one of the following from the inorganic whisker agent: zinc oxide whiskers, calcium sulfate whiskers, calcium carbonate whiskers, aluminum borate whiskers, titanium-based whiskers, and hydroxyl groups. One of the following: basic apatite whiskers, magnesium hydroxide whiskers, basic magnesium sulfate whiskers, and silicon carbide whiskers; one of the following: selected fiber agent: glass fiber, carbon fiber, aromatic polyamide fiber, vinylon fiber, polyvinyl alcohol fiber, polyphenylene sulfide fiber, stainless steel fiber, basalt fiber, and pyrite fiber; and one of the following: selected silane coupling agent: KH-560, KH-550, KH-580, KH-590, KH-792, Nanda-42, Nanda-73, A-186, and A-1160. These are sequentially added to a reaction vessel and stirred. The reaction vessel temperature is lowered to 20-25 degrees Celsius, and then the mixture is continuously stirred in a sealed reaction vessel for one to two hours. Finally, an adhesive with good bonding properties is obtained.Adhesives prepared by heating and stirring high-performance phenolic epoxy resin and polyvinyl alcohol (a high-molecular-weight compound with good water solubility and adhesive properties) as raw materials, along with various additives to form a cross-linked structure, can improve their strength and durability. Furthermore, the addition of reinforcing curing agents, reinforcing fillers, inorganic whisker agents, fiber agents, and silane coupling agents—various adhesive strengthening agents—can effectively improve the adhesive's bonding strength. This results in adhesives with excellent bonding performance, effectively ensuring their bonding strength and eliminating limitations on the objects they can bond, allowing for flexible application in various fields.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, various modifications can be made to it without departing from the scope of the present invention, and equivalent components can be replaced with equivalents or some technical features can be equivalently replaced. All modifications and modifications within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adhesive with good bonding properties, comprising a main agent, additives, and a tack enhancer, characterized in that: The main agent includes phenolic epoxy resin and polyvinyl alcohol, the auxiliary agents include curing agent, diluent, plasticizer, filler, initiator, thickener, antioxidant, polymerization inhibitor, stabilizer, complexing agent, emulsifier and crosslinking agent, and the viscosity enhancing agent includes reinforcing curing agent, reinforcing filler, inorganic whisker agent, fiber agent and silane coupling agent.

2. The adhesive with good bonding properties according to claim 1, characterized in that: The main component contains 50 to 70 parts by weight of phenolic epoxy resin and 30 to 50 parts by weight of polyvinyl alcohol.

3. The adhesive with good bonding properties according to claim 1, characterized in that: The additives comprise, by weight, five to ten parts of curing agent, five to ten parts of diluent, three to six parts of plasticizer, two to four parts of filler, three to seven parts of initiator, eight to eleven parts of thickener, seven to ten parts of antioxidant, four to nine parts of polymerization inhibitor, one to two parts of stabilizer, two to six parts of complexing agent, two to five parts of crosslinking agent, and ten to seventeen parts of crosslinking agent.

4. The adhesive with good bonding properties according to claim 1, characterized in that: The viscous reinforcing agent comprises 15 to 20 parts by weight of the reinforcing curing agent, 12 to 17 parts by weight of the reinforcing filler, 9 to 13 parts by weight of the inorganic whisker agent, 2 to 4 parts by weight of the fiber agent, and 7 to 13 parts by weight of the silane coupling agent.

5. The adhesive with good bonding properties according to claim 1, characterized in that: The reinforcing curing agent is one of dicyandiamide, m-phenylenediamine, and linear phenolic resin.

6. The adhesive with good bonding properties according to claim 1, characterized in that: The reinforcing filler is one of the following: iron oxide powder, iron powder, aluminum powder, zinc powder, silica, wollastonite powder, and alumina.

7. The adhesive with good bonding properties according to claim 1, characterized in that: The inorganic whisker agent is one of zinc oxide whiskers, calcium sulfate whiskers, calcium carbonate whiskers, aluminum borate whiskers, titanium-based whiskers, hydroxyapatite whiskers, magnesium hydroxide whiskers, basic magnesium sulfate whiskers, and silicon carbide whiskers.

8. The adhesive with good bonding properties according to claim 1, characterized in that: The fiber agent is one of glass fiber, carbon fiber, aromatic polyamide fiber, vinylon fiber, polyvinyl alcohol fiber, polyphenylene sulfide fiber, stainless steel fiber, basalt fiber, and pyrite fiber.

9. The adhesive with good bonding properties according to claim 1, characterized in that: The silane coupling agent is one of KH-560, KH-550, KH-580, KH-590, KH-792, Nanda-42, Nanda-73, A-186, and A-1160.

10. An adhesive with good bonding properties according to claim 1, characterized in that: The preparation method of the adhesive includes the following steps: Step 1: Stirring the main agent: Add phenolic epoxy resin and polyvinyl alcohol to the reaction vessel according to the weight ratio and stir thoroughly. Set the temperature of the reaction vessel to 30 degrees Celsius to 40 degrees Celsius, the stirring speed to 2,500 rpm to 3,500 rpm, and the stirring time to 30 minutes to 1 hour. Step 2, Adding and Mixing Additives: After the main agent is stirred, add the curing agent, diluent, plasticizer, filler, initiator, thickener, antioxidant, polymerization inhibitor, stabilizer, complexing agent, emulsifier and crosslinking agent to the reaction vessel in the following weight proportions and stir to mix. Set the temperature of the reaction vessel to 25 degrees Celsius to 30 degrees Celsius, keep the stirring speed constant, and set the stirring time to 1 hour to 1.5 hours. Step 3: Adding and mixing the adhesive reinforcing agent: After the main agent and the additives are mixed, add the reinforcing curing agent, reinforcing filler, inorganic whisker agent, fiber agent and silane coupling agent from the adhesive reinforcing agent into the reaction vessel in the weight ratio and stir to mix. Reduce the temperature of the reaction vessel to 20 to 25 degrees Celsius, and then continue stirring in the sealed reaction vessel for one to two hours to finally obtain an adhesive with good bonding properties.

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