Forming method of rigid polystyrene foam material skin composite structure

A technology of polystyrene foam and composite structure, which is applied in the field of molding of rigid polystyrene foam skin composite structure, and can solve the problems of poor peelability, low strength of composite bonding section, and incomplete rigid polystyrene foam. Applicability and other issues, to achieve the effect of easy process, wide structural bearing capacity, and easy control of bonding strength

Pending Publication Date: 2021-09-24
CHINA ACADEMY OF ENG PHYSICS FUNCTION MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing skin composite material bonding technology is not completely suitable for rigid polystyrene foam. The main disadvantage is that the strength of the composite bonded section is not high and the peelability is poor.

Method used

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  • Forming method of rigid polystyrene foam material skin composite structure
  • Forming method of rigid polystyrene foam material skin composite structure
  • Forming method of rigid polystyrene foam material skin composite structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, such as figure 2 , 3As shown, a molded carbon fiber cloth laminate of 100mm×100mm×0.2mm is selected as the skin material, and a rigid polystyrene foam material with a size of 102mm×102mm×15mm and a density of 300 kg / m3 is used as the substrate material. Use a drill bit with a diameter of 0.5 mm to drill glue holes on the substrate material, the hole diameter is 0.5 mm, the square array, the drilling depth is 2.5 mm, the vertical and horizontal spacing of the holes is 20 mm, the distance between the edge position and the center of the hole is 10 mm, and the hole size tolerance Take ±1mm, and then use 240-grit sandpaper to polish the pasting surface of the substrate material, and use 180-grit sandpaper to roughly polish the pasting surface of the skin material. After polishing, ensure that the plane is flat and has no protruding structures. The roughness can be seen visually , and then blow the substrate material and skin material with compressed air, put the...

Embodiment 2

[0035] Example 2, choose a molded carbon fiber cloth laminate of 100mm × 100mm × 0.2mm as the skin material, and cut a rigid polystyrene foam material with a size of 102mm × 102mm × 12mm and a density of 300 kg / m3 as the substrate material . Use a drill bit with a diameter of 1mm to drill glue holes on the substrate material. The hole diameter is 1mm, the circular array, and the drilling depth is 2.5mm. Concentric circles, the radii of the circles are 0, 25 and 45 mm respectively, 16 holes are evenly distributed on each circle, and the hole size tolerance is ±1mm, and then the bonding surface of the substrate material is polished with 240-grit sandpaper , use 180-grit sandpaper to roughly grind the pasting surface of the skin material. After grinding, ensure that the plane is flat and have no protruding structures. The roughness can be seen visually. Then blow the substrate material and skin material with compressed air Ultrasonic cleaning with an ultrasonic cleaner filled wi...

Embodiment 3

[0036] Example 3, choose a molded carbon fiber cloth laminate of 100mm × 100mm × 0.2mm as the skin material, and cut a rigid polystyrene foam material with a size of 102mm × 102mm × 40mm and a density of 300 kg / m3 as the substrate material . Use a drill bit with a diameter of 0.5 mm to drill glue holes on the substrate material, the hole diameter is 0.5 mm, the square array, the drilling depth is 2.5 mm, the vertical and horizontal spacing of the holes is 20 mm, the distance between the edge position and the center of the hole is 10 mm, and the punching distance is The tolerance is ±1mm, then use 240-grit sandpaper to polish the pasting surface of the substrate material, and use 180-grit sandpaper to roughly polish the pasting surface of the skin material. Then, the substrate material and the skin material were blown with compressed air and then placed in an ultrasonic cleaner containing alcohol solution for ultrasonic cleaning. The ultrasonic time was set at 10 minutes. After...

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Abstract

The invention relates to a rigid foam composite structure, in particular to a forming method of a rigid polystyrene foam material skin composite structure. The method comprises the following steps of 1, selecting a rigid polystyrene foam material as a substrate material, and selecting a metal plate or a carbon fiber plate or a carbon cloth laminated plate or an aramid fiber plate or an aramid fiber cloth laminated plate or a phenolic aldehyde laminated plate or a glass fiber reinforced plastic reinforced plate as a skin material; and 2, punching on the substrate material to form a glue filling hole. According to the method, a glue filling hole structure designed according to the bonding requirement is punched in advance in the rigid polystyrene foam material substrate material, and a glue hole position is reasonably arranged; the skin material is attached to the outer portion of the substrate material, a proper adhesive is selected, and composite structure foam is formed after heating and curing; and according to the method, the process is easy to control, the composite structure foam material is excellent in mechanical property, the bonding strength is easy to control, the structure bearing capacity and the wide application range are achieved, and meanwhile the application requirements of special environments are met.

Description

technical field [0001] The present application relates to a rigid foam composite structure, in particular to a molding method of a rigid polystyrene foam skin composite structure. Background technique [0002] As an excellent structural material, rigid closed-cell foam material has poor flexibility, but high compressive hardness, can produce deformation when the stress reaches a certain value, and cannot return to its original shape after the stress is relieved. It has strong adaptability to changes in temperature and humidity, low water absorption, low hygroscopicity, good chemical stability, strong resistance to chemicals such as acids and alkalis, low thermal conductivity, and convenient molding and processing. It can be molded, extruded, etc. It has outstanding characteristics such as being prepared by molding methods such as extrusion and injection, and easy to carry out secondary molding processing. Representative products are rigid polystyrene foam, rigid polyurethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54B29C37/02B29C43/50B29C65/48
CPCB29C70/443B29C70/54B29C65/481B29C43/50B29C37/02
Inventor 张成杰田哲周彦鹏李凯孔晶晶
Owner CHINA ACADEMY OF ENG PHYSICS FUNCTION MATERIAL RES INST
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