CN116355568A - Adhesive sealant special for rubber ring and preparation method thereof - Google Patents
Adhesive sealant special for rubber ring and preparation method thereof Download PDFInfo
- Publication number
- CN116355568A CN116355568A CN202310293449.0A CN202310293449A CN116355568A CN 116355568 A CN116355568 A CN 116355568A CN 202310293449 A CN202310293449 A CN 202310293449A CN 116355568 A CN116355568 A CN 116355568A
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- CN
- China
- Prior art keywords
- agent
- epoxy resin
- curing agent
- curing
- adhesive sealant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000565 sealant Substances 0.000 title claims abstract description 37
- 239000000853 adhesive Substances 0.000 title claims abstract description 35
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 239000003822 epoxy resin Substances 0.000 claims description 27
- 229920000647 polyepoxide Polymers 0.000 claims description 27
- 239000012745 toughening agent Substances 0.000 claims description 21
- 239000007822 coupling agent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- -1 alicyclic amine Chemical class 0.000 claims description 2
- 125000002723 alicyclic group Chemical group 0.000 claims description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 2
- 150000003961 organosilicon compounds Chemical group 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 125000001302 tertiary amino group Chemical group 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical group CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a special adhesive sealant for a rubber ring and a preparation method thereof. The sealant prepared by the invention has proper pot life at room temperature, can be cured at room temperature, has better bonding performance on the sealing rubber ring, is used as a sealant special for bonding the rubber ring, and solves the problems that the bonding effect of the original bonding sealant on the sealing rubber ring is poor and the sealing rubber ring is extruded and falls off in the assembly process.
Description
Technical Field
The invention belongs to the field of sealants, and particularly relates to a special adhesive sealant for a rubber ring and a preparation method thereof.
Background
In the early development stage of new generation special equipment, a sealing structure design different from other series special equipment is adopted, a sealing rubber ring is used as a sealing material in the structure, and sealing of certain connecting parts is realized by using a rubber material. However, due to the performance characteristics of high elasticity, low hardness and easy deformation of the rubber, the rubber ring is often fallen off or damaged due to extrusion in the process of processing and assembling, so that the sealing structure is invalid.
In the previous research process, a plurality of special adhesive sealant products for equipment are adopted to bond the sealing rubber ring, but as the rubber is made of nonpolar materials, the surface bonding is difficult, the bonding effect is not ideal, the bonding cannot be formed or the bonding strength is not enough, and the rubber ring still falls off or is damaged.
Disclosure of Invention
The invention provides adhesive sealant special for a rubber ring and a preparation method thereof, and aims to solve the adhesive sealing problem of the sealing rubber ring.
The invention is realized by the following technical scheme:
the special adhesive sealant for the rubber ring comprises the following components in parts by mass:
65% -72% of epoxy resin;
15% -18% of a curing agent I;
0.1% -3.5% of curing agent II;
6% -8.5% of toughening agent;
1.2% -1.8% of accelerator;
3% -4% of a coupling agent;
the epoxy resin and the curing agent are main substances for bonding the sealant, and can be cured at room temperature to bond the rubber ring firmly; the curing agent I has high reactivity, can be rapidly cured at room temperature, but the cured product has brittleness, the curing agent II has strong adhesive force and better toughness, but the curing activity at room temperature is low, the curing agent I and the curing agent II jointly act, so that the reactivity at room temperature can be ensured, the adhesive force can be improved, and the dosage ratio of the curing agent I and the curing agent II is estimated according to the epoxy value of the epoxy resin.
The other additives (toughening agent, accelerator and coupling agent) are components added according to the requirements of the performance process, and the toughening agent can form a toughening structure in the system, improve the toughness and adapt to the elastic deformation of rubber; the accelerator can accelerate the curing reaction, reduce the curing temperature and shorten the curing time; the coupling agent helps to improve the bonding force between the adhesive sealant and the various materials.
In the technical scheme, the epoxy resin is liquid epoxy resin containing epoxy groups;
the curing agent I and the curing agent II are amine curing agents;
the toughening agent is an active end group polymer;
the accelerator is an amine curing accelerator;
the coupling agent is an organosilicon compound.
In the technical scheme, the epoxy resin is bisphenol A epoxy resin, alicyclic epoxy resin or modified epoxy resin; the curing agent I and the curing agent II are aliphatic amine curing agents, polyamide curing agents or alicyclic amine curing agents; the toughening agent is Qishi toughening agent; the accelerator is a tertiary amine accelerator; the coupling agent is a silane coupling agent.
In the above technical scheme, the curing agent I and the curing agent II adopt different types of curing agents.
In the technical scheme, the epoxy resin is modified epoxy resin; the curing agent I is an aliphatic amine curing agent; the curing agent II is a low molecular weight polyamide curing agent (molecular weight is below 1000); the toughening agent is Qishi VL series toughening agent; the accelerator is a DMP-30 accelerator; the coupling agent is KH-550 silane coupling agent.
In the technical scheme, the sealant is suitable for bonding the rubber rings made of nonpolar materials.
The preparation method of the special adhesive sealant for the rubber ring comprises the following steps:
adding epoxy resin and a toughening agent into a first container, and uniformly mixing and stirring to form a first component;
(ii) sequentially adding the curing agent I, the curing agent II, the coupling agent and the accelerator into a second container, and uniformly mixing and stirring to form a second component;
(iii) respectively taking the first component and the second component from the two containers, mixing in a new container, and uniformly stirring to obtain the special adhesive sealant for the rubber ring.
In the technical scheme, when the room temperature in the step (i) is lower than 30 ℃, the epoxy resin is placed into a forced air drying oven to be heated for 0.5-1 h at 40-50 ℃, and then the epoxy resin is mixed with the toughening agent, so that the stirring of raw materials in preparation is facilitated.
In the technical scheme, the epoxy resin, the toughening agent, the curing agent I, the curing agent II, the coupling agent and the accelerator are added according to the mass percent:
65% -72% of epoxy resin;
15% -18% of a curing agent I;
0.1% -3.5% of curing agent II;
6% -8.5% of toughening agent;
1.2% -1.8% of accelerator;
3% -4% of coupling agent.
In the above technical solution, the steps (i), (ii) and (iii) are all performed at normal temperature and pressure.
The beneficial effects of the invention are as follows:
the invention provides a special adhesive sealant composition for a special equipment sealing rubber ring, which has a proper pot life at room temperature, namely, has a certain service time and can be operated; can be cured at room temperature to form a stable cross-linked structure; the sealing rubber ring has good bonding performance, can bond the rubber ring firmly, and solves the problems of falling off and damage.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the technical scheme of the present invention is further described below by means of specific embodiments.
Example 1
The epoxy resin and the toughening agent are added into a container 1 according to the content of each component specified in the table 1, and the components are mixed and stirred uniformly to form the component A. When the preparation is carried out, if the room temperature is lower than 30 ℃, the resin can be placed into a blast drying oven to be heated for half an hour to one hour at the temperature of 40-50 ℃ so as to be beneficial to the stirring of the raw materials during the preparation;
sequentially adding a curing agent I, a curing agent II, a coupling agent and an accelerator into a container 2, and uniformly mixing and stirring to form a component B;
mixing the component A and the component B according to a certain proportion, and uniformly stirring.
Relevant performance tests were carried out as required and the test results are listed in table 2.
Example 2
The procedure of example 1 was repeated with the amounts of the components specified in Table 1 below, but with the proportions of the components as set forth in example 2 of Table 1, and with the test results set forth in Table 2.
Comparative example
The procedure of example 1 was repeated with the amounts of each component specified in Table 1 below, but with the proportions of each component as set forth in the comparative examples in Table 1, and with the test results as set forth in Table 2.
Table 1 special equipment sealing rubber ring special adhesive sealant example
Performance tests were performed on the products of examples 1, 2 and comparative examples: the process applicability of the composition is represented by the pot life of the composition after mixing, the pot life cannot be too short or too long, and the process requirement is met after 2-3 hours; the peel force of the peel test sample is used for expressing the adhesive force to the rubber ring, and the higher the value is, the better the adhesive force of the adhesive sealant to the rubber ring is; the actual processing process is simulated by the test piece transfer, whether the rubber ring falls off or not is verified, and the specific results are shown in Table 2.
Table 2 examples of adhesive sealant compositions specific for sealing rubber rings with special equipment
The test data in table 2 are analyzed, and the working period of example 1 is 3 hours, so that enough operation windows can be flowed out for operation, the actual processing process is simulated by using a test piece, and the rubber ring is firmly bonded and does not fall off.
The special adhesive sealant composition for the rubber ring is coated on the rubber ring or the adhered part, the rubber ring is pressed and adhered on the adhered part, and then the adhesive is cured at room temperature to finish the adhesive, so that the special adhesive sealant for the rubber ring can firmly fix the rubber ring and can not fall off in the process of processing and assembling. The combination of the adhesive sealant special for the rubber ring and the mass percentage range of each component are determined through a large number of experiments, and the combination and the mass percentage range enable the adhesive sealant composition special for the rubber ring to firmly adhere to the rubber ring and ensure the smooth proceeding of the processing and assembling process.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
Claims (10)
1. The utility model provides a special bonding sealant of rubber circle which characterized in that: the sealant comprises the following components in percentage by mass:
65% -72% of epoxy resin;
15% -18% of a curing agent I;
0.1% -3.5% of curing agent II;
6% -8.5% of toughening agent;
1.2% -1.8% of accelerator;
3% -4% of coupling agent.
2. The adhesive sealant for rubber rings of claim 1, wherein:
the epoxy resin is liquid epoxy resin containing epoxy groups;
the curing agent I and the curing agent II are amine curing agents;
the toughening agent is an active end group polymer;
the accelerator is an amine curing accelerator;
the coupling agent is an organosilicon compound.
3. The adhesive sealant for rubber rings of claim 1, wherein: the epoxy resin is bisphenol A epoxy resin, alicyclic epoxy resin or modified epoxy resin; the curing agent I and the curing agent II are aliphatic amine curing agents, polyamide curing agents or alicyclic amine curing agents; the toughening agent is Qishi toughening agent; the accelerator is a tertiary amine accelerator; the coupling agent is a silane coupling agent.
4. The adhesive sealant for rubber rings of claim 3, wherein: the curing agent I and the curing agent II adopt different types of curing agents.
5. The adhesive sealant for rubber rings of claim 1, wherein: the epoxy resin is modified epoxy resin; the curing agent I is an aliphatic amine curing agent; the curing agent II is a low molecular weight polyamide curing agent.
6. The adhesive sealant for rubber rings of claim 1, wherein: the sealant is suitable for bonding rubber rings made of nonpolar materials.
7. A preparation method of special adhesive sealant for rubber rings is characterized by comprising the following steps: the method comprises the following steps:
adding epoxy resin and a toughening agent into a first container, and uniformly mixing and stirring to form a first component;
(ii) sequentially adding the curing agent I, the curing agent II, the coupling agent and the accelerator into a second container, and uniformly mixing and stirring to form a second component;
(iii) mixing the first component and the second component, and uniformly stirring to obtain the special adhesive sealant for the rubber ring.
8. The method for preparing the adhesive sealant special for the rubber ring, which is characterized in that: and (3) when the room temperature in the step (i) is lower than 30 ℃, heating the epoxy resin at 40-50 ℃ for 0.5-1 h, and then mixing the epoxy resin with the toughening agent.
9. The method for preparing the adhesive sealant special for the rubber ring, which is disclosed in claim 6, is characterized in that: the epoxy resin, the toughening agent, the curing agent I, the curing agent II, the coupling agent and the accelerator are added according to the mass percent:
65% -72% of epoxy resin;
15% -18% of a curing agent I;
0.1% -3.5% of curing agent II;
6% -8.5% of toughening agent;
1.2% -1.8% of accelerator;
3% -4% of coupling agent.
10. The method for preparing the adhesive sealant special for the rubber ring, which is disclosed in claim 6, is characterized in that: the steps (i), (ii) and (iii) are all carried out at normal temperature and pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310293449.0A CN116355568A (en) | 2023-03-24 | 2023-03-24 | Adhesive sealant special for rubber ring and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310293449.0A CN116355568A (en) | 2023-03-24 | 2023-03-24 | Adhesive sealant special for rubber ring and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116355568A true CN116355568A (en) | 2023-06-30 |
Family
ID=86927308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310293449.0A Pending CN116355568A (en) | 2023-03-24 | 2023-03-24 | Adhesive sealant special for rubber ring and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116355568A (en) |
-
2023
- 2023-03-24 CN CN202310293449.0A patent/CN116355568A/en active Pending
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