Manual gluing and bonding method based on aviation fluoroether rubber and metal heat vulcanization process

Abstract

The invention relates to the field of heat vulcanization of aviation fluoroether rubber and metal, in particular to a manual gluing and bonding method based on a heat vulcanization process of aviation fluoroether rubber and metal, which comprises the following specific steps: A, surface treatment of a metal bonding surface; b, coating an adhesive; c, preparing a bonding reinforcing agent; d, coating a bonding reinforcing agent; e, blank making; f, vulcanizing; based on a heat vulcanization manual bonding process of the aviation fluoroether rubber and the metal and a heat vulcanization mold pressing process of the fluoroether rubber, a new gluing method is formed by optimizing an original gluing method, and the problem that the original bonding strength cannot meet the standard requirement of an adhesive is solved.

Description

Technical Field

[0001] The invention relates to the field of thermal vulcanization of fluoroether rubber for aviation and metal, in particular to a manual gluing and bonding method based on the thermal vulcanization process of fluoroether rubber for aviation and metal. Background Art

[0002] In the manufacturing process of hot vulcanization bonding of metal-fluoroether rubber parts for aviation, it is necessary to apply adhesive to the bonding area of ​​the metal frame to achieve the bonding of fluoroether rubber and metal. When hot vulcanization bonding of fluoroether rubber and metal is performed, it is found that according to the usage method specified in the adhesive standard, that is, applying the adhesive to the bonding area of ​​the metal frame and curing it at room temperature for not less than 30 minutes, it is difficult to achieve the adhesive standard requirement of not less than 2.5MPa. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a manual gluing and bonding method based on a hot vulcanization process of aviation fluoroether rubber and metal.

[0004] A manual gluing and bonding method based on the hot vulcanization process of aviation fluoroether rubber and metal, the specific steps of which are as follows:

[0005] A: Surface treatment of metal bonding surface:

[0006] A1: Use physical means to clean the metal bonding surface;

[0007] A2: Use a non-polar solvent to clean the metal bonding surface;

[0008] B: Apply adhesive:

[0009] Apply FXY-4 adhesive on the bonding surface of the metal skeleton;

[0010] C: Adhesion enhancer configuration:

[0011] C1: Pass the fluoroether mixed rubber to be bonded on a rubber mixer, grind it into thin slices, and cut it into pieces;

[0012] C2: Mix the chopped fluoroether rubber mix with ethyl acetate, stirring continuously during mixing to dissolve it and form a suspension-like bonding enhancer;

[0013] D: Apply adhesion enhancer:

[0014] Applying an adhesive enhancer on the bonding surface of the metal skeleton;

[0015] E: Blank making:

[0016] E1: Remix the fluoroether mixed rubber to be bonded on the rubber mixer;

[0017] E2: Cut the re-refined rubber sheet according to the outer dimensions of the rubber area of ​​the manufactured parts;

[0018] F: Vulcanization:

[0019] F1: Set the vulcanizing temperature, vulcanizing time and vulcanizing pressure of the flat vulcanizing machine according to the standard of the mixed rubber material;

[0020] F2: Place the manufactured blank on the bonding surface of the metal frame and put it into the mold;

[0021] F3: Place the mold into the vulcanizing machine, control the vulcanizing machine to start vulcanization, and automatically stop the vulcanizing machine when the vulcanization time is reached.

[0022] The beneficial effects of the present invention are as follows: the present invention is based on the hot vulcanization manual bonding process of fluoroether rubber and metal for aviation and the hot vulcanization molding process of fluoroether rubber, and by optimizing the original gluing method, a new gluing method is formed to solve the problem that the original bonding strength cannot meet the standard requirements of the adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the process structure of the present invention. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below.

[0026] like Figure 1 As shown, a manual gluing bonding method based on the hot vulcanization process of aviation fluoroether rubber and metal, the specific steps are as follows:

[0027] A: Surface treatment of metal bonding surface:

[0028] A1: Use physical means to clean the metal bonding surface;

[0029] A2: Use a non-polar solvent to clean the metal bonding surface;

[0030] B: Apply adhesive:

[0031] Apply FXY-4 adhesive on the bonding surface of the metal skeleton;

[0032] C: Adhesion enhancer configuration:

[0033] C1: Pass the fluoroether mixed rubber to be bonded on a rubber mixer, grind it into thin slices, and cut it into pieces;

[0034] C2: Mix the chopped fluoroether rubber mix with ethyl acetate, stirring continuously during mixing to dissolve it and form a suspension-like bonding enhancer;

[0035] D: Apply adhesion enhancer:

[0036] Applying an adhesive enhancer on the bonding surface of the metal skeleton;

[0037] E: Blank making:

[0038] E1: Remix the fluoroether mixed rubber to be bonded on the rubber mixer;

[0039] E2: Cut the re-refined rubber sheet according to the outer dimensions of the rubber area of ​​the manufactured parts;

[0040] F: Vulcanization:

[0041] F1: Set the vulcanizing temperature, vulcanizing time and vulcanizing pressure of the flat vulcanizing machine according to the standard of the mixed rubber material;

[0042] F2: Place the manufactured blank on the bonding surface of the metal frame and put it into the mold;

[0043] F3: Place the mold into the vulcanizing machine, control the vulcanizing machine to start vulcanization, and automatically stop the vulcanizing machine when the vulcanization time is reached.

[0044] The invention is based on a hot-vulcanized manual bonding process of aviation fluoroether rubber and metal and a hot-vulcanized molding process of fluoroether rubber, and optimizes the original gluing method to form a new gluing method, thereby solving the problem that the original bonding strength cannot meet the standard requirements of the adhesive.

[0045] The Φ25 standard mushroom manufactured by the AF process was tested for bonding strength according to the method of GB / T 11211-2009 "Two-plate method for determination of bonding strength between vulcanized rubber or thermoplastic rubber and metal" to form Table 1, as follows:

[0046] Table 1 Adhesive strength of process methods A-F

[0047]

[0048]

[0049] From the data in the table, it can be seen that the bonding strength of the AF process meets the adhesive standard requirement that the bonding strength is not less than 2.5MPa.

[0050] The physical means in step A1 is a sandblasting treatment method, which is used for cleaning.

[0051] The non-polar solvent in step A2 is ethyl acetate, which has a good cleaning effect.

[0052] The FXY-4 adhesive in step B is cured at room temperature for no less than 30 minutes. The present invention is based on a hot-vulcanized manual bonding process of aviation fluoroether rubber and metal and a hot-vulcanized molding process of fluoroether rubber. Parts are made of FM-2 or FM-2D fluoroether mixed rubber and FXY-4 adhesive.

[0053] The mass ratio of the fluoroether mixed rubber to ethyl acetate in step C2 is 1:4 to 1:6, and the ratio is changed according to the actual amount.

[0054] The coating of the adhesion enhancer in step D needs to be carried out at 140-150° C. and cured for no less than 30 minutes to ensure sufficient curing.

[0055] The parts in step F1 are processed by hot vulcanization molding. When the rubber mix material is determined, the vulcanization temperature, vulcanization time and vulcanization pressure are determined according to the rubber mix material standard, so that there is a table to follow.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A manual gluing and bonding method based on the hot vulcanization process of aviation fluoroether rubber and metal, characterized in that: The specific steps are as follows: A: Surface treatment of metal bonding surface: A1: Use physical means to clean the metal bonding surface; A2: Use a non-polar solvent to clean the metal bonding surface; B: Apply adhesive: Apply FXY-4 adhesive on the bonding surface of the metal skeleton; C: Adhesion enhancer configuration: C1: Pass the fluoroether mixed rubber to be bonded on a rubber mixer, grind it into thin slices, and cut it into pieces; C2: Mix the chopped fluoroether rubber mix with ethyl acetate, stirring continuously during mixing to dissolve it and form a suspension-like bonding enhancer; D: Apply adhesion enhancer: Applying an adhesive enhancer on the bonding surface of the metal skeleton; E: Blank making: E1: Remix the fluoroether mixed rubber to be bonded on the rubber mixer; E2: Cut the re-refined rubber sheet according to the outer dimensions of the rubber area of ​​the manufactured parts; F: Vulcanization: F1: Set the vulcanizing temperature, vulcanizing time and vulcanizing pressure of the flat vulcanizing machine according to the standard of the mixed rubber material; F2: Place the manufactured blank on the bonding surface of the metal frame and put it into the mold; F3: Place the mold into the vulcanizing machine, control the vulcanizing machine to start vulcanization, and automatically stop the vulcanizing machine when the vulcanization time is reached.

2. A method for manually gluing and bonding aviation fluoroether rubber and metal by hot vulcanization process according to claim 1, characterized in that: The physical means in step A1 is a sandblasting treatment method.

3. The method for manually gluing and bonding aviation fluoroether rubber and metal by hot vulcanization process according to claim 1, characterized in that: The non-polar solvent in step A2 is ethyl acetate.

4. The method for manually gluing and bonding aviation fluoroether rubber and metal by hot vulcanization process according to claim 1, characterized in that: The FXY-4 adhesive in step B is cured at room temperature for no less than 30 minutes.

5. The method for manually gluing and bonding aviation fluoroether rubber and metal by hot vulcanization process according to claim 1, characterized in that: The mass ratio of the fluoroether mixed rubber to ethyl acetate in step C2 is 1:4 to 1:

6.

6. The method for manually gluing and bonding aviation fluoroether rubber and metal by hot vulcanization process according to claim 1, characterized in that: The coating of the adhesion enhancer in step D needs to be carried out at 140-150° C. and cured for no less than 30 minutes.

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