CN114316808A - Acrylate structural adhesive and preparation method and application thereof - Google Patents
Acrylate structural adhesive and preparation method and application thereof Download PDFInfo
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- CN114316808A CN114316808A CN202111680959.0A CN202111680959A CN114316808A CN 114316808 A CN114316808 A CN 114316808A CN 202111680959 A CN202111680959 A CN 202111680959A CN 114316808 A CN114316808 A CN 114316808A
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Abstract
The invention discloses an acrylate structural adhesive, which comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 60-80% of acrylate monomer, 20-45% of toughening filler and 3-5% of accelerator; the component B comprises a curing agent. The invention also provides a preparation method and application of the acrylate structural adhesive. The acrylate structural adhesive can realize stable adhesion on materials with lower surface energy such as PP/PE/PA without treatment, can realize rapid curing at room temperature, and has high adhesion strength after curing.
Description
Technical Field
The invention relates to the technical field of adhesives, and particularly relates to an acrylate structural adhesive as well as a preparation method and application thereof.
Background
At present, the acrylate structural adhesives on the market are various in types, have good bonding capacity for materials such as metal, general plastic, engineering plastic and the like, and are convenient to use, rapid in curing and wide in application. However, for materials with lower surface energy such as PP/PE/PA, the common acrylate structural adhesive is not ideal for bonding, which severely limits the application of such adhesives.
In order to solve the bonding problem of low surface energy materials, chemical treatment methods such as corona, primary coating, chemical corrosion and the like are generally used for treating the surface of the material firstly, and then an adhesive is used for bonding the material, but the treatment method has the problems of low efficiency, poor reliability and the like, so that the process steps are increased, the cost is increased, certain pollution is caused to the environment, and the bonding force of the treated adhesive to the material is still unsatisfactory. Therefore, an acrylate structural adhesive which can effectively bond materials with lower surface energy such as PP/PE/PA without treatment is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the acrylate structural adhesive, and the preparation method and the application thereof, so that the stable bonding can be realized on materials with lower surface energy, such as PP/PE/PA and the like, without treatment, the rapid curing can be realized at room temperature, and the bonding strength is high after the curing.
The invention provides an acrylate structural adhesive, which comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 60-80% of acrylate monomer, 20-45% of toughening filler and 3-5% of accelerator; the component B comprises a curing agent.
Further, the acrylate monomer is one or more of 2-phenoxyethyl methacrylate, isooctyl methacrylate or methyl methacrylate.
Further, the toughening filler is one or a mixture of two of an ABS toughening agent B338 or an SBS toughening agent Keteng D1155.
Further, the accelerant is one or a mixture of more than two of succinic anhydride and triphenylphosphine.
Further, the curing agent is trimethylolpropane-tris [3- (2-methylaziridinyl) propionate.
Further, the component A is prepared by the following method:
adding 60-80% of acrylate monomer into a double-planetary power stirrer, and stirring at the rotating speed of 600-900r/min for 20 min; then sequentially adding 20-45% of toughening filler and 3-5% of accelerator, stirring for 1h, and introducing circulating water to cool to 20-25 ℃; stirring at the rotation speed of 600-; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A.
The invention also provides a preparation method of the acrylate structural adhesive, wherein the component A is prepared by the following method:
adding 60-80% of acrylate monomer into a double-planetary power stirrer, and stirring at the rotating speed of 600-900r/min for 20 min; then sequentially adding 20-45% of toughening filler and 3-5% of accelerator, stirring for 1h, and introducing circulating water to cool to 20-25 ℃; stirring at the rotation speed of 600-; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A.
The invention also provides application of the acrylate structural adhesive in bonding of low surface energy materials.
Compared with the prior art, the invention has the following technical effects:
the acrylate structural adhesive for bonding the low-surface-energy material is different from a traditional curing system in a special manner, and a special curing agent trimethylolpropane-tris [3- (2-methylaziridinyl) propionate is adopted; special accelerating agent succinic anhydride or triphenylphosphine can bond PP/PE/PA and other materials with extremely high strength after being cured; curing at room temperature for 48h, and no obvious decrease in strength at 60 deg.C and 90% humidity for 7 days. The acrylate structural adhesive for bonding low-surface-energy materials is applied to bonding of low-surface-energy difficult-to-bond materials such as PP/PE/PA and the like, and bonding can be realized without primer coating and other treatment.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
The acrylate structural adhesive for adhering low surface energy material consists of component A comprising 2-phenoxyethyl methacrylate 36 wt%, isooctyl methacrylate 30 wt%, B338 toughening resin 30 wt% and succinic anhydride 4 wt%.
The preparation method of the acrylate structural adhesive for bonding the low-surface-energy material comprises the following steps: weighing 36% of 2-phenoxyethyl methacrylate and 30% of isooctyl methacrylate, sequentially adding into a double-planetary power stirrer, and stirring for 30min at the speed of 600-; and then sequentially adding 30% of B338 toughened resin and 4% of succinic anhydride, stirring for 1h, introducing circulating water, cooling to 20-25 ℃, vacuumizing to be less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A of the acrylate structural adhesive for bonding the low-surface-energy material.
An acrylate structural adhesive for adhering low-surface-energy material is prepared from trimethylolpropane-tri [3- (2-methylaziridine) propionate as component B.
Example 2
The acrylate structural adhesive for bonding low surface energy material consists of component A comprising 2-phenoxyethyl methacrylate 40 wt%, methyl methacrylate 25 wt%, Keteng D1155 resin 31 wt% and triphenyl phosphine 4.0 wt%.
The preparation method of the acrylate structural adhesive for bonding the low-surface-energy material comprises the following steps: weighing 40% of 2-phenoxyethyl methacrylate, 25% of methyl methacrylate and 31% of Keteng D1155 resin, sequentially adding the materials into a double-planetary power stirrer, and stirring 30min by 600-900 r/min; adding 4.0% of triphenylphosphine, stirring for 1h, and introducing circulating water to cool to 20-25 ℃; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A of the acrylate structural adhesive for bonding low-surface-energy materials.
An acrylate structural adhesive for adhering low-surface-energy material is prepared from trimethylolpropane-tri [3- (2-methylaziridine) propionate as component B.
Example 3
The component A comprises, by weight, 45% of isooctyl methacrylate, 22% of methyl methacrylate, 30% of D1155 toughening resin and 3.0% of succinic anhydride.
The preparation method of the acrylate structural adhesive for bonding the low-surface-energy material comprises the following steps: weighing 45% of isooctyl methacrylate, 22% of methyl methacrylate and 30% of D1155 toughening resin, sequentially adding the components into a double-planetary power stirrer, and stirring 30min by 600-900 r/min; adding 3.0% succinic anhydride, stirring for 1h, and cooling to 20-25 deg.C with circulating water; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A of the acrylate structural adhesive for bonding low-surface-energy materials.
An acrylate structural adhesive for adhering low-surface-energy material is prepared from trimethylolpropane-tri [3- (2-methylaziridine) propionate as component B.
Example 4
An acrylate structural adhesive for adhering low-surface-energy material is prepared from (by weight) 2-phenoxyethyl methacrylate 70%, B338 toughening resin 27% and succinic anhydride 3.0%.
The preparation method of the acrylate structural adhesive for bonding the low-surface-energy material comprises the following steps: weighing 70% of 2-phenoxyethyl methacrylate and 27% of B338 toughening resin, sequentially adding the two components into a double-planetary power stirrer, and stirring for 30min at the speed of 600-; adding 3.0% succinic anhydride, stirring for 1h, and cooling to 20-25 deg.C with circulating water; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A of the acrylate structural adhesive for bonding low-surface-energy materials.
An acrylate structural adhesive for adhering low-surface-energy material is prepared from trimethylolpropane-tri [3- (2-methylaziridine) propionate as component B.
Comparative example 1
A common single-component acrylate adhesive comprises 53 percent of methyl methacrylate, 40 percent of nitrile rubber, 5 percent of o-phenylsulfonyl imide and 2 percent of cumene hydroperoxide;
adding 53% of methyl methacrylate, 40% of nitrile rubber and 5% of o-phenylsulfonyl imide into a double-planetary power mixing stirrer in sequence, controlling the temperature at 35-45 ℃ at the rotating speed of 500r/min, stirring uniformly, adding 2% of cumene hydroperoxide, stirring for 30min, vacuumizing to-0.095 MPa for defoaming, filtering, filling and sealing under the condition of shading to obtain the common single-component acrylate adhesive.
Comparative example 2
A common single-component acrylate adhesive comprises, by weight, 42.9% of methyl methacrylate, 12% of hydroxyethyl methacrylate, 41.3% of chlorosulfonated polyethylene, 1.5% of thiourea and 2.3% of cumene hydroperoxide;
adding 42.9% of methyl methacrylate, 12% of hydroxyethyl methacrylate, 41.3% of chlorosulfonated polyethylene and 1.5% of thiourea into a double-planetary power mixing stirrer in sequence, controlling the temperature at 35-45 ℃ at 500r/min, uniformly stirring, adding 2.3% of cumene hydroperoxide, stirring for 30min, vacuumizing to-0.095 MPa for defoaming, filtering under a shading condition, filling and sealing to obtain the common single-component acrylate adhesive.
The samples of examples 1-4, in which the a and B components were filled into cans at a volume ratio of 10:1, were subjected to comparative tests for mechanical properties and curing speed with the conventional one-component acrylate adhesives of comparative examples 1-2 by the following test tests:
1. sample preparation and curing
a. The sample preparation method comprises the following steps: respectively installing each structural adhesive in a dispenser mould, and adjusting the dispensing pressure to 4.5 Kg;
b. curing conditions are as follows: PP material, room temperature 24 h;
2. mechanical and cure speed testing
a. And (3) curing state: appearance and initial strength;
b. tensile shear strength test: stretching and shearing in the positive direction after 24 hours;
the test results are shown in Table 1, and Table 1 shows the results of comparing the performance of the samples obtained in examples 1 to 4 with that of the conventional one-component acrylate adhesives of comparative examples 1 to 2.
TABLE 1
| Test specimen | Cured state | Initial Strength (Kg) | Tensile shear Strength (MPa) |
| Example 1 | Full curing is complete | 13.3 | 4.5 |
| Example 2 | Full curing is complete | 12.1 | 4.8 |
| Example 3 | Full curing is complete | 11.5 | 4.2 |
| Example 4 | Full curing is complete | 13.1 | 4.8 |
| Comparative example 1 | Full curing is complete | 1.0 | 0.1 |
| Comparative example 2 | Full curing is complete | 2.0 | 0.2 |
As can be seen from Table 1, compared with the existing common single-component acrylate adhesive, the acrylate structural adhesive for bonding the low-surface-energy material has high initial strength; after being cured for 24 hours at room temperature, the adhesive has high strength and can bond materials with low surface energy, such as PP/PE/PA and the like.
While the invention has been described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more particular description of the invention than is possible with reference to the specific embodiments, which are not to be construed as limiting the invention. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. The acrylate structural adhesive is characterized by comprising a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 60-80% of acrylate monomer, 20-45% of toughening filler and 3-5% of accelerator; the component B comprises a curing agent.
2. The acrylate structural adhesive of claim 1, wherein the acrylate monomer is one or more of 2-phenoxyethyl methacrylate, isooctyl methacrylate, and methyl methacrylate.
3. The acrylate structural adhesive of claim 1, wherein the toughening filler is one or a mixture of two of ABS toughening agent B338 and SBS toughening agent kraton D1155.
4. The acrylate structural adhesive of claim 1, wherein the accelerator is one or a mixture of two or more of succinic anhydride and triphenylphosphine.
5. The acrylate structural adhesive of claim 1, wherein the curing agent is trimethylolpropane tris [3- (2-methylaziridinyl) propionate.
6. The acrylate structural adhesive of claim 1, wherein the a component is prepared by the following method:
adding 60-80% of acrylate monomer into a double-planetary power stirrer, and stirring at the rotating speed of 600-900r/min for 20 min; then sequentially adding 20-45% of toughening filler and 3-5% of accelerator, stirring for 1h, and introducing circulating water to cool to 20-25 ℃; stirring at the rotation speed of 600-; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A.
7. The preparation method of the acrylate structural adhesive as claimed in any one of claims 1 to 5, wherein the component A is prepared by the following method:
adding 60-80% of acrylate monomer into a double-planetary power stirrer, and stirring at the rotating speed of 600-900r/min for 20 min; then sequentially adding 20-45% of toughening filler and 3-5% of accelerator, stirring for 1h, and introducing circulating water to cool to 20-25 ℃; stirring at the rotation speed of 600-; vacuumizing to less than or equal to-0.095 MPa, defoaming for 1h, stirring uniformly, removing bubbles, filtering, filling and sealing to obtain the component A.
8. Use of the acrylate structural adhesive according to any one of claims 1-5 for bonding low surface energy materials.
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| CN202111680959.0A CN114316808A (en) | 2021-12-31 | 2021-12-31 | Acrylate structural adhesive and preparation method and application thereof |
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| CN202111680959.0A CN114316808A (en) | 2021-12-31 | 2021-12-31 | Acrylate structural adhesive and preparation method and application thereof |
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2021
- 2021-12-31 CN CN202111680959.0A patent/CN114316808A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040116598A1 (en) * | 2002-09-26 | 2004-06-17 | Jong-Shing Guo | Removable, water-whitening resistant pressure sensitive adhesives |
| CN1954000A (en) * | 2004-04-13 | 2007-04-25 | 诺瓦塞尔有限公司 | Pressure-sensitive adhesive tape and method for production thereof |
| CN103080264A (en) * | 2010-08-31 | 2013-05-01 | Lg化学株式会社 | Removal pressure sensitive adhesive of aqueous emulsion and method for preparing the same |
| EP3020776A1 (en) * | 2013-07-09 | 2016-05-18 | Nitto Denko Corporation | Adhesive sheet and use thereof |
| CN109385918A (en) * | 2018-11-12 | 2019-02-26 | 广州市珠之江环保印花材料实业有限公司 | Printing and dyeing PVA glue and preparation method thereof |
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Effective date of registration: 20230626 Address after: 264006 Room 101, Building 1, No. 29, Tianshan Road, Development Zone, Yantai City, Shandong Province Applicant after: Xintai Yonghe (Yantai) New Material Co.,Ltd. Address before: 264005 No. 29, Tianshan Road, development zone, Yantai City, Shandong Province Applicant before: YANTAI TIGHTSEN FINE CHEMICAL CO.,LTD. |