阅读说明：本技术 一种蜂窝夹层复合材料构件退除脱模剂的方法 (Method for removing release agent from honeycomb sandwich composite material member ) 是由 张朵 孙宇楠 李华 毛英坤 乔文慧 胡兴华 蔡克强 于 2020-12-11 设计创作，主要内容包括：本申请提供一种蜂窝夹层复合材料构件退除脱模剂的方法,所述方法包括：使用粘性除尘擦布,对蜂窝夹层结构胶接件的待喷漆表面进行表面清洗；使用遮蔽膜,对所述蜂窝夹层结构胶接件的不需要涂漆区域进行隔离；将隔离后的所述蜂窝夹层结构胶接件放置在塑喷机的工装上；设置塑喷机参数,用塑喷机将塑料喷射介质,喷射到蜂窝夹层结构胶接件的待喷漆表面,直至蜂窝夹层结构胶接件表面的残留脱模剂及底胶层去除干净,且不损伤表面处理层；去除脱模剂及底胶层后的蜂窝夹层结构胶接件,使用清洗剂擦拭后,用干净布蘸活化剂涂敷在蜂窝夹层结构胶接件表面,活化表面处理膜层,使蜂窝夹层结构胶接件表面保持湿润时长T1。(The application provides a method for removing a release agent from a honeycomb sandwich composite material member, which comprises the following steps: cleaning the surface to be painted of the honeycomb sandwich structure glued joint by using sticky dust removing wiping cloth; isolating areas of the honeycomb sandwich structure glued joint which do not need to be painted by using a shielding film; placing the isolated honeycomb interlayer structure adhesive connector on a tool of a plastic spraying machine; setting parameters of a plastic spraying machine, spraying a plastic spraying medium to the surface to be sprayed of the honeycomb sandwich structure glue joint piece by using the plastic spraying machine until the residual release agent and the primer layer on the surface of the honeycomb sandwich structure glue joint piece are completely removed and the surface treatment layer is not damaged; removing the release agent and the primer layer, wiping the honeycomb sandwich structure cementing piece by using a cleaning agent, dipping an activating agent by using clean cloth, coating the cleaning agent on the surface of the honeycomb sandwich structure cementing piece, activating a surface treatment film layer, and keeping the surface of the honeycomb sandwich structure cementing piece wet for a time T1.)

1. A method of releasing a release agent from a honeycomb sandwich composite member, the method comprising:

cleaning the surface to be painted of the honeycomb sandwich structure glued joint by using sticky dust removing wiping cloth;

isolating areas of the honeycomb sandwich structure glued joint which do not need to be painted by using a shielding film;

placing the isolated honeycomb interlayer structure adhesive connector on a tool of a plastic spraying machine;

setting parameters of a plastic spraying machine, spraying a plastic spraying medium to the surface to be sprayed of the honeycomb sandwich structure glue joint piece by using the plastic spraying machine until the residual release agent and the primer layer on the surface of the honeycomb sandwich structure glue joint piece are completely removed and the surface treatment layer is not damaged;

removing the release agent and the primer layer from the honeycomb sandwich structure glue joint piece, wiping the honeycomb sandwich structure glue joint piece by using a cleaning agent, dipping an activating agent by using clean cloth, coating the cleaning agent on the surface of the honeycomb sandwich structure glue joint piece, and activating a surface treatment film layer to keep the surface of the honeycomb sandwich structure glue joint piece wet for a time T1;

wiping the surface activator with a clean rag dipped with clean deionized water, and drying for a time T2;

and (4) carrying out surface treatment on the activated film layer, and spraying paint within a preset time.

2. The method of claim 1, wherein the plastic blasting media comprises aminoplast abrasives having a size of 40 to 50 mesh.

3. The method of claim 1, wherein the plastic jetting machine has a nozzle pressure of 10-20 psi.

4. The method according to claim 1, wherein the plastic injection machine has a plastic injection medium flow rate of 40-60 lb/h.

5. The method of claim 1, wherein the cleaning agent comprises an X-1 diluent.

6. The method of claim 1, wherein the activator comprises an L96 activator.

7. The method of claim 1, wherein said T1 is 5 minutes and said T2 is 30 minutes.

8. The method according to claim 1, characterized in that said preset time is 2 hours.

Technical Field

The invention belongs to the surface treatment technology of composite materials, and particularly relates to a method for removing a release agent from a honeycomb sandwich composite material member.

Background

The residual release agent on the surface of the honeycomb sandwich structure gluing piece affects the painting quality, the residual release agent and the primer layer need to be removed before painting, and the surface treatment layer cannot be damaged.

Disclosure of Invention

The application provides a method for removing a release agent from a honeycomb sandwich composite material member, which is characterized in that a plastic medium spraying process is utilized to remove the release agent and a primer layer remained on the surface of a formed honeycomb sandwich structure adhesive joint without damaging a surface treatment layer, so that the aims of improving the painting quality of the honeycomb sandwich structure adhesive joint and improving the production efficiency are fulfilled.

The application provides a method for removing a release agent from a honeycomb sandwich composite material member, which comprises the following steps:

cleaning the surface to be painted of the honeycomb sandwich structure glued joint by using sticky dust removing wiping cloth;

isolating areas of the honeycomb sandwich structure glued joint which do not need to be painted by using a shielding film;

placing the isolated honeycomb interlayer structure adhesive connector on a tool of a plastic spraying machine;

setting parameters of a plastic spraying machine, spraying a plastic spraying medium to the surface to be sprayed of the honeycomb sandwich structure glue joint piece by using the plastic spraying machine until the residual release agent and the primer layer on the surface of the honeycomb sandwich structure glue joint piece are completely removed and the surface treatment layer is not damaged;

removing the release agent and the primer layer from the honeycomb sandwich structure glue joint piece, wiping the honeycomb sandwich structure glue joint piece by using a cleaning agent, dipping an activating agent by using clean cloth, coating the cleaning agent on the surface of the honeycomb sandwich structure glue joint piece, and activating a surface treatment film layer to keep the surface of the honeycomb sandwich structure glue joint piece wet for a time T1;

wiping the L96 activator on the surface with a clean rag soaked with clean deionized water, and drying for a time T2;

and (4) carrying out surface treatment on the activated film layer, and spraying paint within a preset time.

Preferably, the plastic spraying medium is an aminoplast abrasive with the specification of 40-50 meshes.

Preferably, the nozzle pressure of the plastic spraying machine is 10-20 psi.

Preferably, the plastic spraying medium flow of the plastic spraying machine is 40-60 lb/h.

Preferably, the cleaning agent comprises an X-1 diluent.

Preferably, the activator comprises L96 activator.

Preferably, the T1 is 5 minutes and the T2 is 30 minutes.

Preferably, the preset time is 2 hours.

In summary, the application provides a method for removing a release agent from a honeycomb sandwich composite material member, which is characterized in that a plastic medium is used for spraying to remove the release agent and a primer layer on the surface of a honeycomb sandwich structure bonding piece, and an activating agent is used for activating a surface treatment layer to be painted, so that the painting quality of the honeycomb sandwich structure bonding piece is effectively improved, and the production efficiency is improved. Compared with the traditional manual polishing technology, the one-time cross inspection qualification rate of the paint is improved by more than 30%, and the production efficiency is improved by more than 50%.

Drawings

FIG. 1 is a schematic view of a honeycomb sandwich structured splice.

Detailed Description

The invention or the technical scheme of the invention is as follows:

a method for removing a release agent and a primer layer of a honeycomb sandwich composite material member is characterized by comprising the following steps:

the method comprises the following steps: and (3) cleaning the surface of the honeycomb sandwich structure gluing piece to be painted by using sticky dust removing wiping cloth.

Step two: masking films are used to isolate areas of an aerospace composite member where painting is not required.

Step three: and placing the honeycomb interlayer structure gluing piece after isolation on a tool.

Step four: setting parameters of a plastic spraying machine, enabling the pressure of a nozzle to be 10-20 psi and the flow of a plastic spraying medium to be 40-60 lb/h, and spraying the plastic medium to the surface of the honeycomb sandwich structure adhesive piece by using the plastic spraying machine until the release agent and the primer layer remained on the surface of the honeycomb sandwich structure adhesive piece are removed completely without damaging a surface treatment layer.

Step five: after the release agent and the primer layer are removed, the honeycomb sandwich structure adhesive joint piece is wiped by using an X-1 diluent, and then is dipped in an L96 activating agent by using a clean cloth and coated on the surface of the part to activate the surface treatment film layer, so that the surface of the part is kept wet for 5 min. The surface was then wiped clean of L96 activator for 30min with a clean wipe soaked with clean deionized water.

Step six: and spraying paint on the activated surface treatment film layer within 2 h.

Step seven: the plastic spraying medium used in the pretreatment of the aviation composite material before painting adopts an aminoplast abrasive material, and the specification is 40-50 meshes.

Example one

Step 101: and cleaning the surface to be painted of the honeycomb sandwich structure glued joint by using C-60 sticky dust removal wiping cloth.

Step 102: the use of a german masking film for isolating areas of an aerospace composite member that do not require painting.

Step 103: and placing the honeycomb interlayer structure gluing piece after isolation on a tool.

Step 104: setting parameters of a plastic spraying machine, setting the pressure of a nozzle to be 20psi and the flow rate of a plastic spraying medium to be 60lb/h, and spraying the plastic medium to the surface of the honeycomb sandwich structure glued joint by using the plastic spraying machine until the release agent and the primer layer are remained on the surface of the honeycomb sandwich structure glued joint but the surface treatment layer is not damaged.

Step 105: after the release agent and the primer layer are removed, the honeycomb sandwich structure adhesive joint piece is wiped by using an X-1 diluent, and then is dipped in an L96 activating agent by using a clean cloth and coated on the surface of the part to activate the surface treatment film layer, so that the surface of the part is kept wet for 5 min. The surface was then wiped clean of L96 activator for 30min with a clean wipe soaked with clean deionized water.

Step 106: and spraying paint on the activated surface treatment film layer within 1 h.

Step 107: the plastic spraying medium adopts an aminoplast grinding material, and the specification is 40-50 meshes.

Example two:

step 201: and (3) cleaning the surface to be painted of the honeycomb sandwich structure gluing piece by using a CMV (cytomegalovirus) viscous dust removal wiping cloth.

Step 202: the use of a german shadow film isolated areas of honeycomb sandwich structural adhesive where painting was not required.

Step 203: and placing the honeycomb interlayer structure gluing piece after isolation on a tool.

Step 204: setting parameters of a plastic spraying machine, setting the pressure of a nozzle to be 15psi and the flow of a plastic spraying medium to be 50lb/h, and spraying the plastic medium to the surface of the honeycomb sandwich structure glued joint by using the plastic spraying machine until the release agent and the primer layer are remained on the surface of the honeycomb sandwich structure glued joint but the surface treatment layer is not damaged.

Step 205: after the release agent and the primer layer are removed, the honeycomb sandwich structure adhesive joint piece is wiped by using an X-1 diluent, and then is dipped in an L96 activating agent by using a clean cloth and coated on the surface of the part to activate the surface treatment film layer, so that the surface of the part is kept wet for 5 min. The surface was then wiped clean of L96 activator for 30min with a clean wipe soaked with clean deionized water.

Step 206: the activated surface treatment film layer is sprayed within 1.5 h.

Step 207: the plastic spraying medium adopts an aminoplast grinding material, and the specification is 40-50 meshes.