阅读说明：本技术 一种泡棉胶带及其制备方法 (A kind of foam tape and preparation method thereof ) 是由 夏春苗 丁清华 鞠久妹 于 2019-08-28 设计创作，主要内容包括：本发明揭示了一种泡棉胶带及其制备方法,其中,泡棉胶带包括丙烯酸泡棉胶层、丙烯酸粘合剂层和无机基材,丙烯酸泡棉胶层为双固化的双组份树脂,双组份树脂包括固化剂组分和树脂组分,丙烯酸粘合剂层涂布于丙烯酸泡棉胶层上、下相对的两表面上；无机基材的一表面上形成有处理剂层,该处理剂层与泡棉胶带的其中一面的丙烯酸粘合剂层相粘合。本发明提高了泡棉胶带本身的强度,及提高其粘合剂与无机基材的粘贴强度,从而提高泡棉胶带的剪切强度。(Present invention discloses a kind of foam tapes and preparation method thereof, wherein, foam tape includes acrylic foam glue-line, acrylic adhesive layer and inorganic substrate, acrylic foam glue-line is double cured two-component resins, two-component resin includes curing agent component and resin Composition, and acrylic adhesive layer is coated on the upper and lower two opposite surfaces of acrylic foam glue-line；It is formed with processing oxidant layer on one surface of inorganic substrate, the acrylic adhesive layer of the wherein one side of the processing oxidant layer and foam tape is bonding.The present invention improves the intensity of foam tape itself, and improves the sticking strength of its adhesive and inorganic substrate, to improve the shear strength of foam tape.)

1. a kind of foam tape, which is characterized in that including acrylic foam glue-line and acrylic adhesive layer, the acrylic acid bubble Celloidin layer is double cured two-component resins, and the two-component resin includes curing agent component and resin Composition, the curing agent Component includes the resin containing isocyanate group, and the resin Composition is including at least a kind of activity that can be reacted with isocyanate group Group and unsaturation are strong；The acrylic adhesive layer is coated on the upper and lower two opposite surfaces of the acrylic foam glue-line.

2. a kind of foam tape according to claim 1, which is characterized in that the ratio of the resin Composition and curing agent component Example is 10: 1~10: 2.

3. a kind of foam tape according to claim 1, which is characterized in that the degree of functionality of the resin Composition is less than or equal to 3。

4. a kind of foam tape according to claim 1, which is characterized in that the acrylic foam glue-line and acrylic acid are viscous The interface of mixture layer passes through chemical bonds.

5. a kind of foam tape according to claim 1, which is characterized in that it further include inorganic substrate, the inorganic substrate A surface on be formed with processing oxidant layer, the acrylic adhesive layer of the processing oxidant layer and the wherein one side of foam tape mutually glues It closes.

6. a kind of foam tape according to claim 5, which is characterized in that the inorganic agent is silane coupling agent, described The structural formula of silane coupling agent is Y-R-Si (OR)₃, in formula, Y is organic functional base, and SiOR is siloxy.

7. a kind of foam tape according to claim 6, which is characterized in that the organic functional base is energy and foam tape Acrylic adhesive layer react the organic group to form chemical bonds, the organic functional base be at least alkyl, epoxy group, One of amino, isocyanate group.

8. a kind of foam tape according to claim 6, which is characterized in that the acrylic adhesive layer includes can be with silicon The component that the organic functional base of alkane coupling agent is reacted.

9. a kind of foam tape according to claim 1, which is characterized in that it is described it is double be cured as after ultraviolet curing again into Row heat cure.

10. a kind of preparation method of foam tape, which is characterized in that the described method includes:

Resin Composition and curing agent component are uniformly mixed and form mixture, the mixture is coated on release film, is formed Middle layer forms acrylic foam glue-line, wherein the resin Composition is after the interlayer surfaces are covered release film solidification Strong including at least a kind of active group that can be reacted with isocyanate group and unsaturation, the curing agent component includes containing isocyanic acid The resin of ester group；

Acryloid cement is coated on the upper and lower two opposite surfaces of the acrylic foam glue-line again, forms acrylic acid Adhesive phase, so that foam tape semi-finished product be made；

Release film solidification is covered on the surface of the foam tape semi-finished product, foam tape is made.

11. a kind of preparation method of foam tape according to claim 10, which is characterized in that the method also includes:

The inorganic substrate after cleaning is pre-processed using inorganic agent, is formed at one layer on a wherein surface for inorganic substrate Manage oxidant layer；

The acrylic adhesive layer of the processing oxidant layer of the inorganic substrate and the wherein one side of foam tape is bonding.

12. a kind of preparation method of foam tape according to claim 11, which is characterized in that the inorganic agent is silane Coupling agent, it is described use inorganic agent to the inorganic substrate after cleaning carry out pretreatment include: to dilute silane coupling agent with solvent After be coated on inorganic substrate, reheat solidification.

13. a kind of preparation method of foam tape according to claim 11, which is characterized in that by the inorganic substrate Processing oxidant layer and foam tape acrylic adhesive layer it is bonding after, then cured.

Technical field

The present invention relates to a kind of foam tapes, more particularly, to a kind of foam tape and preparation method thereof.

Background technique

Foam tape is with EVA (ethylene-vinyl acetate copolymer, molecular formula (C₂H₄)_x·(C₄H₆O₂)_y) either PE (polyethylene, polyethylene) foam be substrate its one or both sides be coated with solvent type (or heat molten type) pressure sensitive adhesive again it is multiple with Release paper is fabricated, and has the function of sealing, damping, has outstanding leakproofness, incompressible morphotropism, anti-flammability, infiltration Property etc..Foam tape be widely used in electric equipment products, component of machine, all kinds of small household appliances, Cellphone Accessories, industrial instrument, Computer and perimeter equipment, automobile parts, audio-visual equipment, toy, cosmetics etc..

Traditional foam tape use one layer of foam glue-line, cohesiveness can there is a problem of it is very big, especially foam and Special surface processing is not carried out between glue-line, so that glue-line part cohesiveness is very low, is easily removed, poor sealing effect.Meanwhile tradition Foam tape can add various solvents in process of production, environmental pollution and the waste of the energy be brought, especially in coating apparatus Solvent recovery or burner are needed, serious environmental pollution is caused if direct emission；In addition, during the drying process, by In the presence of solvent and high temperature, security risk coefficient increases.

In view of the foregoing, need to develop a kind of foam tape product of high intensity.

Summary of the invention

It is an object of the invention to overcome the deficiencies of existing technologies, foam tape and its preparation side of a kind of high intensity are provided Method.

To achieve the above object, the following technical solutions are proposed: a kind of foam tape by the present invention, including acrylic foam glue-line And acrylic adhesive layer, the acrylic foam glue-line are double cured two-component resins, the two-component resin includes solid Agent component and resin Composition, the curing agent component include the resin containing isocyanate group, and the resin Composition is at least to wrap It is strong containing a kind of active group that can be reacted with isocyanate group and unsaturation；The acrylic adhesive layer is coated on the propylene On the upper and lower two opposite surfaces of sour foam glue-line.

Preferably, the ratio of the resin Composition and curing agent component is 10: 1~10: 2.

Preferably, the degree of functionality of the resin Composition is less than or equal to 3.

Preferably, the interface of the acrylic foam glue-line and acrylic adhesive layer passes through chemical bonds.

Preferably, further include inorganic substrate, processing oxidant layer, the inorganic agent are formed on a surface of the inorganic substrate Layer is bonding with the acrylic adhesive layer of the wherein one side of foam tape.

Preferably, the inorganic agent is silane coupling agent, and the structural formula of the silane coupling agent is Y-R-Si (OR)₃, formula In, Y is organic functional base, and SiOR is siloxy.

Preferably, the organic functional base is that can react to form chemical bonds with the acrylic adhesive layer of foam tape Organic group, the organic functional base is at least one of alkyl, epoxy group, amino, isocyanate group.

Preferably, the acrylic adhesive layer includes the group that can be reacted with the organic functional base of silane coupling agent Point.

Preferably, described pair is cured as carrying out heat cure after ultraviolet curing again.

Present invention further teaches another technical solutions: a kind of preparation method of foam tape, comprising:

Resin Composition and curing agent component are uniformly mixed and form mixture, the mixture is coated on release film, Middle layer is formed, after the interlayer surfaces are covered release film solidification, forms acrylic foam glue-line, wherein the resin group It is divided into and is good for including at least a kind of active group that can be reacted with isocyanate group and unsaturation, the curing agent component includes containing different The resin of cyanic acid ester group；

Acryloid cement is coated on the upper and lower two opposite surfaces of the acrylic foam glue-line again, forms third Olefin(e) acid adhesive phase, so that foam tape semi-finished product be made；

Release film solidification is covered on the surface of the foam tape semi-finished product, foam tape is made.

Preferably, the method also includes:

The inorganic substrate after cleaning is pre-processed using inorganic agent, forms one on a wherein surface for inorganic substrate Layer processing oxidant layer；

The acrylic adhesive layer of the processing oxidant layer of the inorganic substrate and the wherein one side of foam tape is bonding.

Preferably, the inorganic agent is silane coupling agent, described to be carried out in advance using inorganic agent to the inorganic substrate after cleaning Processing includes: to be coated on inorganic substrate after diluting silane coupling agent with solvent, reheats solidification.

Preferably, after the acrylic adhesive layer of the processing oxidant layer of the inorganic substrate and foam tape is bonding, It is cured again.

The beneficial effects of the present invention are:

1, foam tape of the invention is two-component resin, and intensity is high, solves traditional foam tape in bonding failure The gluing oxidant layer of generation and the disengaging problem of foamed cotton layer, so that the shear strength of foam tape greatly improved.

2, simultaneously this high intensity foam tape, arrange in pairs or groups inorganic agent substrate is pre-processed, to and further mention High shear strength.

3, by the cured double curing process of reheating after foam tape progress UV solidification, the interior of acrylic foam glue-line is enhanced Poly- power, to further improve shear strength.

Detailed description of the invention

Fig. 1 is the structural schematic diagram after foam tape of the present invention and the stickup of pretreated inorganic substrate；

Fig. 2 is the structural schematic diagram of foam tape of the present invention；

Fig. 3 is the structural schematic diagram of the pretreated inorganic substrate of the present invention；

Appended drawing reference:

10, foam tape ontology, 11, acrylic foam glue-line, 12, acrylic adhesive layer, 13, release film, 20, inorganic Substrate, 21, processing oxidant layer.

Specific embodiment

Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.

Disclosed a kind of foam tape and preparation method thereof, by carrying out double solidifications and right to foam tape Inorganic substrate is pre-processed, and the intensity of foam tape itself is improved, and improves the sticking strength of its adhesive and inorganic substrate, To improve the shear strength of foam tape.

As shown in connection with fig. 1, the revealed a kind of foam tape of the embodiment of the present invention, including foam tape ontology 10 and inorganic Substrate 20, wherein as shown in connection with fig. 2, foam tape ontology 10 includes acrylic foam glue-line 11,12 and of acrylic adhesive layer Release film 13, wherein acrylic foam glue-line 11 is double cured two-component resins, and double solidifications refer to can be at UV (i.e. ultraviolet light) Heat cure is carried out after solidification, increases the crosslink density of acrylic foam glue-line 11 and improves cohesive force.

The two-component resin of acrylic foam glue-line 11 is specifically curing agent component and resin Composition respectively, wherein solidification Agent group is divided into the resin containing isocyanate group, specifically can be the saturated resin containing isocyanate group, such as HDI (Hexamethylene Diisocyanate, hexamethylene diisocyanate), TDI (toluene di-isocyanate(TDI)), MDI is (by different The polyurethane material that cyanate is synthesized with polyalcohol and its compounding aid) etc., it is also possible to the unsaturated tree containing isocyanate group Rouge.Resin Composition is strong including at least a kind of active group that can be reacted with isocyanate group (NCO) and unsaturation, wherein living Property group such as hydroxyl, amino, epoxy group, sulfydryl, carboxyl etc., resin portion such as hydroxypropyl, CEA (acryloxy propionic), or The oligomer of hydroxyl.When implementation, the resin Composition of acrylic foam glue-line 11 and the ratio of curing agent component are 10: 1~10: 2.Wherein, the degree of functionality of resin Composition is less than or equal to 3, and the passing through of interface of acrylic foam glue-line and acrylic adhesive layer Bond is learned to close.

Acrylic adhesive layer 12 is coated on the upper and lower two opposite surfaces of acrylic foam glue-line 11.

Release film 13 is covered on the acrylic adhesive layer 12 of foam tape ontology 10, release film 13 can be used one layer or At two layers, one layer, release film 13 is covered in foam tape ontology 10 wherein on the acrylic adhesive layer 12 of one side, and two layers When, then two layers of release film 13 is covered in respectively on the acrylic adhesive layer 12 of 10 upper and lower surface of foam tape ontology.

In conjunction with shown in Fig. 1 and Fig. 3, inorganic substrate 20 and foam tape ontology 10 are bonding.Preferably, in the present embodiment, Before using high-intensitive foam tape ontology 10, inorganic substrate 20 is pre-processed using inorganic agent, inorganic after processing One layer of processing oxidant layer 21 is formed on the surface of substrate 20, the acrylic acid of the processing oxidant layer 21 and the wherein one side of foam tape bonds Oxidant layer 12 is bonding, improves the adhesive of foam tape and the sticking strength of inorganic substrate 20.Specifically, when implementation, inorganic agent Silane coupling agent can be used, structural formula is Y-R-Si (OR)₃, in formula, Y is organic functional base, it can be alkyl, epoxy group, Amino, isocyanate group etc. are preferably able to react to form chemical bonded refractory with the acrylic adhesive layer 12 of high-intensitive foam tape The organic group of conjunction.SiOR is siloxy.When implementation, inorganic substrate 20 can be steel plate.

It can preferentially select carry out with the organic functional base of silane coupling agent in the formula of above-mentioned acrylic adhesive layer 12 The component of reaction, such as hydroxy acrylate.

Illustrate foam tape product of the present invention and preparation method thereof below with two specific embodiments.