Bonding composition as well as preparation method and application thereof

Abstract

The invention relates to the technical field of bonding, in particular to a bonding composition as well as a preparation method and application thereof. The invention provides a bonding composition. The bonding composition is prepared from fluororubber, peroxide and a solvent, the weight ratio of the peroxide to the fluororubber to the solvent is 1: (70-150): (700-1500). In the application process of the bonding composition provided by the invention, after a metal part is bonded with rubber, the bonding composition has good corrosion resistance, good solvent resistance and good medium resistance, and the service life of the bonding composition in an acid-base environment can be prolonged.

Description

Technical Field

[0001] The invention relates to the field of bonding technology, and in particular to a bonding composition and a preparation method and application thereof. Background Art

[0002] In the semiconductor manufacturing process, a high degree of cleanliness and vacuum environment need to be maintained to prevent impurities from affecting product quality. Therefore, the vacuum system plays a vital role, and the Bonded slit valve door (BSV) BSV is one of the key components to ensure the normal operation of this system. Specifically, BSV can reliably seal and isolate the vacuum system to prevent the leakage of gas or impurities, thereby ensuring the stability and reliability of the semiconductor manufacturing process. At the same time, its design also takes into account the needs of easy operation and maintenance, so that the valve can be easily opened and closed, as well as regularly maintained and serviced in the daily operation of semiconductor equipment. It should be noted that due to the particularity and complexity of semiconductor equipment, the performance and quality requirements of BSV are very high. Therefore, when selecting and using this valve, it is necessary to fully consider the specific needs and working environment of the equipment to ensure the applicability and reliability of the valve. BSV plays an important role in the vacuum system of semiconductor equipment and is one of the key components to ensure the smooth progress of the semiconductor manufacturing process. With the diversity and complexity of the development of semiconductor processes, the requirements for BSV are getting higher and higher. The most critical thing is to put forward higher requirements on the sealing part and the bonding performance. The material is required to have better corrosion resistance, solvent resistance, and medium resistance. At the same time, the requirements for glue are also very high. Even if the sealing material has good performance, the glue itself will become a weak point, thereby reducing the service life of BSV. Currently, the cold adhesive or hot vulcanized adhesive on the market is not resistant to acid and alkali, which affects the service life of the bonded assembly in acid and alkali environments.

[0003] The Chinese patent with patent publication number CN101611064A discloses a method for bonding a perfluoroelastomer material to a surface, but does not provide a solution for improving the corrosion resistance, solvent resistance, and medium resistance of the bonding composition.

[0004] Therefore, providing a bonding composition that is corrosion-resistant, solvent-resistant, and medium-resistant, and can further extend the overall service life of the BSV, is the main technical problem that needs to be solved at present. Summary of the invention

[0005] The first aspect of the present invention provides a bonding composition, the raw materials for preparing the bonding composition include fluororubber, peroxide and solvent; the weight ratio of the peroxide, fluororubber and solvent is 1:(70-150):(700-1500).

[0006] In one embodiment, the weight ratio of the peroxide, fluororubber, and solvent is 1:(80-120):(800-1200).

[0007] In a preferred embodiment, the weight ratio of the peroxide, fluororubber and solvent is 1:100:1000.

[0008] In a preferred embodiment, the fluororubber is perfluororubber, and the manufacturer's model that can be purchased is Solvay 95HT.

[0009] In one embodiment, the peroxide is selected from a combination of one or more of 2,5-bis(tert-butyl)-2,5-dimethylhexane, di-tert-butyl peroxide isopropylbenzene, and bis-2,4-dichlorobenzoyl peroxide.

[0010] In one embodiment, the peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0011] In one embodiment, the solvent is selected from a combination of one or more of electronic fluoride liquid, ethyl acetate, and butyl acetate.

[0012] In one embodiment, the solvent may be ethyl acetate or electronic fluorinated liquid.

[0013] In one embodiment, the solvent is an electronic fluorinated liquid, and the electronic fluorinated liquid is 3M's FC-84.

[0014] A second aspect of the present invention provides a method for preparing a bonding composition, comprising the following steps:

[0015] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0016] S2. dissolving the peroxide using solvent b to obtain solution b;

[0017] S3. Mix solution a and solution b to obtain a bonding composition.

[0018] In one embodiment, the solvent a and the solvent b include electronic fluoride liquid, ethyl acetate and other organic solvents.

[0019] In one embodiment, the bonding composition comprises fluororubber, peroxide, and solvent, and the weight ratio of the peroxide, fluororubber, and solvent is 1:(70-150):(700-1500).

[0020] In one embodiment, the bonding composition comprises fluororubber, peroxide, and solvent, and the weight ratio of the peroxide, fluororubber, and solvent is 1:(80-120):(800-1200).

[0021] In a preferred embodiment, the bonding composition comprises fluororubber, peroxide, and solvent, and the weight ratio of the peroxide, fluororubber, and solvent is 1:100:1000.

[0022] In one embodiment, the dissolution time of the fluororubber using the solvent in S1 is 144-168 hours.

[0023] In one embodiment, the fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0024] In one embodiment, the dissolution time of the fluororubber using a solvent in S1 includes but is not limited to 144h, 145h, 146h, 147h, 148h, 149h, 150h, 151h, 152h, 153h, 154h, 155h, 156h, 157h, 158h, 159h, 160h, 161h, 162h, 163h, 164h, 165h, 166h, 167h, and 168h.

[0025] A third aspect of the present invention provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber to metal.

[0026] In one embodiment, the application method comprises the following steps:

[0027] A1. Applying the bonding composition on the surface of the metal part;

[0028] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0029] A3. After vulcanization, place at 200-230℃ for 16-20h.

[0030] In one embodiment, the number of times the bonding composition is applied to the surface of the metal part in A1 is greater than 1.

[0031] In one embodiment, in A1, after the bonding composition is coated on the surface of the metal part, the metal part is allowed to stand at 23° C. for 10-15 minutes.

[0032] In one embodiment, the bonding composition is applied to the surface of the metal part three times in A1.

[0033] In order to improve the solvent resistance, medium resistance and corrosion resistance of the bonding composition during application, and to extend the service life of the bonding assembly in an acidic and alkaline environment, the inventors found during the experiment that when the weight ratio of peroxide, fluororubber and solvent is 1:(70-150):(700-1500), and the number of times the bonding composition is coated on the surface of the metal part is 3, the bonding composition can have good solvent resistance, medium resistance and corrosion resistance, and can extend the service life of the bonding assembly in an acidic and alkaline environment.

[0034] In one embodiment, in A1, after the bonding composition is applied to the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 10-15 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 10-15 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 10-15 minutes after the coating.

[0035] In one embodiment, the time for the metal part surface to be left standing at 23° C. after the bonding composition is coated includes but is not limited to 10 min, 10.5 min, 11 min, 11.5 min, 12 min, 12.5 min, 13 min, 13.5 min, 14 min, 14.5 min, and 15 min.

[0036] In one embodiment, after being placed at a temperature of 200-230° C. for 16-20 hours, the bonding strength between the metal part and the rubber in A3 is greater than or equal to 2 MPa.

[0037] In one embodiment, after vulcanization in A3, the temperature at high temperature includes but is not limited to 200°C, 201°C, 202°C, 203°C, 204°C, 205°C, 206°C, 207°C, 208°C, 209°C, 210°C, 211°C, 212°C, 213°C, 214°C, 215°C, 216°C, 217°C, 218°C, 219°C, 220°C, 221°C, 222°C, 223°C, 224°C, 225°C, 226°C, 227°C, 228°C, 229°C, and 230°C.

[0038] In one embodiment, the placement time of A3 at a temperature of 200-230° C. includes but is not limited to 16 h, 16.5 h, 17 h, 17.5 h, 18 h, 18.5 h, 19 h, 19.5 h, and 20 h.

[0039] Beneficial Effects

[0040] 1. The bonding composition provided by the present invention can make metal parts and rubber have good corrosion resistance after bonding during application.

[0041] 2. The bonding composition provided by the present invention can make the metal parts and rubber have good solvent resistance after bonding during the application process.

[0042] 3. The bonding composition provided by the present invention can make metal parts and rubber have good medium resistance after bonding during application.

[0043] 4. The bonding composition provided by the present invention can prolong the service life of the bonding assembly in an acidic or alkaline environment. DETAILED DESCRIPTION

[0044] Example 1

[0045] A first aspect of the present embodiment provides a bonding composition, the raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:100:1000.

[0046] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0047] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0048] The solvent is ethyl acetate.

[0049] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0050] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0051] S2. dissolving the peroxide using solvent b to obtain solution b;

[0052] S3. Mix solution a and solution b to obtain a bonding composition.

[0053] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0054] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0055] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0056] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:100:1000.

[0057] The dissolution time of the fluororubber using the solvent in S1 is 160 hours.

[0058] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0059] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0060] The application method comprises the following steps:

[0061] A1. Applying the bonding composition on the surface of the metal part;

[0062] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0063] A3. After vulcanization, place at 220℃ for 18h.

[0064] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0065] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 12 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating.

[0066] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0067] Example 2

[0068] A first aspect of the present embodiment provides a bonding composition, the raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:70:700.

[0069] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0070] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0071] The solvent is ethyl acetate.

[0072] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0073] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0074] S2. dissolving the peroxide using solvent b to obtain solution b;

[0075] S3. Mix solution a and solution b to obtain a bonding composition.

[0076] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0077] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0078] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0079] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:70:700.

[0080] The dissolution time of the fluororubber using the solvent in S1 is 144 hours.

[0081] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0082] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0083] The application method comprises the following steps:

[0084] A1. Applying the bonding composition on the surface of the metal part;

[0085] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0086] A3. After vulcanization, place at 200℃ for 20h.

[0087] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0088] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 10 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 10 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 10 minutes after the coating.

[0089] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0090] Example 3

[0091] A first aspect of the present embodiment provides a bonding composition, the raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:150:1500.

[0092] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0093] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0094] The solvent is ethyl acetate.

[0095] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0096] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0097] S2. dissolving the peroxide using solvent b to obtain solution b;

[0098] S3. Mix solution a and solution b to obtain a bonding composition.

[0099] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0100] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0101] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0102] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:150:1500.

[0103] The dissolution time of the fluororubber using the solvent in S1 is 168 hours.

[0104] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0105] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0106] The application method comprises the following steps:

[0107] A1. Applying the bonding composition on the surface of the metal part;

[0108] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0109] A3. After vulcanization, place at 230℃ for 16h.

[0110] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0111] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 15 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 15 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 15 minutes after the coating.

[0112] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0113] Example 4

[0114] A first aspect of the present embodiment provides a bonding composition, wherein raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:100:100.

[0115] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0116] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0117] The solvent is ethyl acetate.

[0118] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0119] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0120] S2. dissolving the peroxide using solvent b to obtain solution b;

[0121] S3. Mix solution a and solution b to obtain a bonding composition.

[0122] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0123] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0124] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0125] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:100:100.

[0126] The dissolution time of the fluororubber using the solvent in S1 is 160 hours.

[0127] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0128] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0129] The application method comprises the following steps:

[0130] A1. Applying the bonding composition on the surface of the metal part;

[0131] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0132] A3. After vulcanization, place at 220℃ for 18h.

[0133] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0134] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 12 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating.

[0135] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0136] Example 5

[0137] A first aspect of the present embodiment provides a bonding composition, wherein raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:100:500.

[0138] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0139] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0140] The solvent is ethyl acetate.

[0141] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0142] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0143] S2. dissolving the peroxide using solvent b to obtain solution b;

[0144] S3. Mix solution a and solution b to obtain a bonding composition.

[0145] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0146] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0147] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0148] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:100:500.

[0149] The dissolution time of the fluororubber using the solvent in S1 is 160 hours.

[0150] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0151] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0152] The application method comprises the following steps:

[0153] A1. Applying the bonding composition on the surface of the metal part;

[0154] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0155] A3. After vulcanization, place at 220℃ for 18h.

[0156] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0157] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 12 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating.

[0158] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0159] Example 6

[0160] A first aspect of the present embodiment provides a bonding composition, the raw materials for preparing the bonding composition include fluororubber, peroxide, and solvent; the weight ratio of the peroxide, fluororubber, and solvent is 1:100:2000.

[0161] The fluororubber is perfluororubber, and the manufacturer's model available for purchase is Solvay 95HT.

[0162] The peroxide is 2,5-bis(tert-butyl)-2,5-dimethylhexane.

[0163] The solvent is ethyl acetate.

[0164] A second aspect of this embodiment provides a method for preparing a bonding composition, comprising the following steps:

[0165] S1. Dissolve the fluororubber using solvent a to obtain a solution a;

[0166] S2. dissolving the peroxide using solvent b to obtain solution b;

[0167] S3. Mix solution a and solution b to obtain a bonding composition.

[0168] The solvent a is electronic fluorinated liquid, model 3M FC-84.

[0169] The solvent b is electronic fluorinated liquid, model 3M FC-84.

[0170] The solvent includes solvent a and solvent b, and the specific amount used is calculated based on the ability to completely dissolve the fluororubber and the peroxide.

[0171] The weight ratio of peroxide, fluororubber and solvent in the bonding composition is 1:100:2000.

[0172] The dissolution time of the fluororubber using the solvent in S1 is 160 hours.

[0173] The fluororubber used in S1 is in block shape with a size of 2*2*2mm. 3 .

[0174] A third aspect of this embodiment provides an application of a bonding composition, wherein the bonding composition is applied in the technical field of bonding rubber and metal.

[0175] The application method comprises the following steps:

[0176] A1. Applying the bonding composition on the surface of the metal part;

[0177] A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization;

[0178] A3. After vulcanization, place at 220℃ for 18h.

[0179] In the A1, the bonding composition is applied to the surface of the metal part three times.

[0180] In A1, after the bonding composition is applied on the surface of the metal part for the first time, the bonding composition is allowed to stand at 23°C for 12 minutes, the bonding composition is applied for the second time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating; finally, the bonding composition is applied for the third time, and the bonding composition is allowed to stand at 23°C for 12 minutes after the coating.

[0181] The amount of the bonding composition applied for the first time, the amount of the bonding composition applied for the second time, and the amount of the bonding composition applied for the third time are all the same, wherein the size of the bonding surface is 12.5 mm*25 mm, and the thickness of a single coating is 0.05 mm.

[0182] Example 7

[0183] Example 7 provides a bonding composition and a preparation method thereof. The specific implementation method is the same as Example 1, except that, when the bonding composition in Example 7 is applied, the number of times the bonding composition is coated on the surface of the metal part is 1, the size of the bonding surface is 12.5mm*25mm, and the coating thickness is 0.05mm.

[0184] Example 8

[0185] Example 8 provides a bonding composition and a preparation method thereof. The specific implementation method is the same as Example 1, except that, when the bonding composition in Example 8 is applied, the bonding composition is coated on the surface of the metal part twice, the size of the bonding surface is 12.5mm*25mm, and the coating thickness is 0.05mm.

[0186] Comparative Example 1

[0187] The implementation method of Comparative Example 1 is the same as that of Example 1, except that the bonding composition provided in Example 1 is replaced by commercially available common cold adhesive glue.

[0188] Comparative Example 2

[0189] The implementation method of Comparative Example 2 is the same as that of Example 1, except that the bonding composition provided in Example 1 is replaced by a commercially available heat-vulcanized bonding glue.

[0190] The metal parts of the rubber and metal bonding assemblies in Examples 1-8 and Comparative Examples 1-2 are made of the same material, which may be 5754 aluminum, 6061 aluminum, 304 steel, or 316 steel. During the experiment, the metal parts were made of 316 steel, and the surface of the metal parts was sandblasted and then cleaned with acetone, and the roughness of the surface of the metal parts was 120.

[0191] The rubber material used in the rubber and metal bonding assembly in Examples 1-8 and Comparative Examples 1-2 is the same, namely, vulcanizable fluororubber.

[0192] Performance Testing

[0193] 1. Adhesion effect test

[0194] The bonding compositions provided in Examples 1-8 were applied to observe their bonding effects. For those that produced bonding effects, the bonding strength was tested. The test results are shown in Table 1.

[0195] Bond strength test method: Test according to GB T 13936-1992 Test method for tensile shear strength of bond between vulcanized rubber and metal.

[0196] Table 1

[0197]

[0198]

[0199] 2. Tolerance performance test

[0200] The bonding compositions provided in Examples 1-3 and Comparative Examples 1-2 were used to test their solvent resistance and corrosion resistance. The test results are shown in Table 3.

[0201] Solvent resistance test method: immerse a group (each example or each comparative example as a group) of test specimens (3 pieces) into the liquid to be tested, put the liquid into a 60°C constant temperature water bath, take it out and dry it after testing for 24 hours. Test the bonding strength according to the GB T 13936-1992 test method, and calculate the change rate of the chemical agent resistance bonding strength according to the following formula.

[0202]

[0203] Where: Δδ——Change rate of adhesive chemical resistance strength, %;

[0204] ——The arithmetic mean of the strength of the samples after being placed in air;

[0205] ——The arithmetic mean of the strength of the specimens after immersion in chemical reagents.

[0206] The liquid to be tested is a simulated synthetic diesel lubricating oil, which is composed of 99.5 wt % of dioctyl sebacate and 0.5 wt % of phenothiazine.

[0207] Corrosion resistance test method: plasma (test method see Table 2 below, temperature 100±5℃, time 60±5min); after plasma irradiation treatment, the bonding strength is tested according to the GB / T 13936-1992 test method, and the change rate of bonding strength before and after plasma irradiation is calculated (refer to the change rate of bonding strength resistant to chemical agents).

[0208] Table 2

[0209] gas Pressure / Pa Gas flow rate / sccm Power / W <![CDATA

[02] ]> 2±0.5 80±2 800 / 100 <![CDATA[CF4]]> 5±0.5 80±2 800 / 100

[0210] Table 3

[0211]

[0212]

[0213] For solvent resistance and corrosion resistance, the bond strength change rate before and after immersion in the test liquid and before and after plasma irradiation is used as the criterion: A: bond strength change rate <1%, B: bond strength change rate (1-10)%; C: bond strength change rate (10-20)%; D: bond strength change rate ≥20%.

[0214] It can be seen from the test data in Table 3 that the bonding composition provided in the present application has good solvent resistance and corrosion resistance when used, and can extend the service life of the bonding assembly in chemical reagent and plasma environments.

Claims

1. A bonding composition, characterized in that The preparation raw materials include fluororubber, peroxide and solvent; the weight ratio of the peroxide, fluororubber and solvent is 1:(70-150):(700-1500).

2. The bonding composition according to claim 1, characterized in that The peroxide is selected from one or more combinations of 2,5-bis(tert-butyl)-2,5-dimethylhexane, di-tert-butyl peroxide isopropylbenzene, and bis-2,4-dichlorobenzoyl peroxide.

3. The bonding composition according to claim 1 or 2, characterized in that: The solvent is selected from one or more combinations of electronic fluoride liquid, ethyl acetate, and butyl acetate.

4. A method for preparing the bonding composition according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Dissolve the fluororubber using solvent a to obtain a solution a; S2. dissolving the peroxide using solvent b to obtain solution b; S3. Mix solution a and solution b to obtain a bonding composition.

5. The method for preparing the bonding composition according to claim 4, characterized in that: The bonding composition comprises fluororubber, peroxide and solvent, and the weight ratio of the peroxide, fluororubber and solvent is 1:(70-150):(700-1500).

6. The method for preparing the bonding composition according to claim 4, characterized in that: The dissolution time of the fluororubber using the solvent in S1 is 144-168 hours.

7. Use of the bonding composition according to any one of claims 1 to 3, characterized in that: The bonding composition is used in the technical field of bonding rubber and metal.

8. Use of the bonding composition according to claim 7, characterized in that: The application method comprises the following steps: A1. Applying the bonding composition on the surface of the metal part; A2. The metal part coated with the bonding composition is bonded to the rubber and placed in a vulcanizing device for vulcanization; A3. After vulcanization, place at 200-230℃ for 16-20h.

9. Use of the bonding composition according to claim 8, characterized in that: In A1, the bonding composition is applied to the surface of the metal part more than once.

10. Use of the bonding composition according to claim 9, characterized in that: In the A3, after being placed at a temperature of 200-230° C. for 16-20 hours, the bonding strength between the metal part and the rubber is greater than or equal to 2 MPa.

Images