| AI Qiu-shi,WANG Wei,ZHU Li.Properties of Process Material for Surfacing of Resin-based Composites[J],47(5):177-181 |
| Properties of Process Material for Surfacing of Resin-based Composites |
| Received:February 04, 2018 Revised:May 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.05.027 |
| KeyWord:composite surfacing surfacer sealing agent filler |
| Author | Institution |
| AI Qiu-shi |
Beijing Institute of Aeronautical Materials, Beijing , China |
| WANG Wei |
Beijing Institute of Aeronautical Materials, Beijing , China |
| ZHU Li |
Chengdu Aircraft Corporation, Chengdu , China |
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| Abstract: |
| The work aims to improve surface evenness of fiber reinforced composites before painting, and guarantees surface conditions of paint films. To-be-painted surfaces of the composites were finished with process materials. Three kinds of process materials including surfacer, pinhole filler and sealant were used for surface finishing of glass fiber-reinforced resin-based composites, and then for painting matched protective primer. Process properties, adhesion and compatibility with coating of the three process materials were evaluated by testing curing property of finished materials, adhesion to substrate and paintcoat, and coating system consistency, and comparing surface conditions of painted composites not finished by process materials. Effects of such defects as pinholes and pits on coating appearance could be reduced effectively by finishing the surfaces of resin-based composites with pinhole filler, sealant, or pinhole filler and surfacer before painting, and the adhesion between paintcoat and substrate was over 15 MPa. The three process materials can be used for surface finishing of composites before painting and improving of painted surface states since they are consistent with primer, and they have no negative effects on mechanical properties and medium resistance. |
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