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Preparation method for glass fibre reinforced resin composite plate spring

A composite material plate and reinforced resin technology, applied in the field of composite material leaf springs, can solve problems such as increased manufacturing costs, product size limitations, and lack of glue in trachoma, and achieve the effects of improving production efficiency, improving comprehensive performance, and accurate data monitoring

Active Publication Date: 2012-09-12
北京国材汽车复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The RTM process can form leaf springs with more complex structures, but there are some unavoidable defects, such as surface blistering and lack of glue in trachoma; the compression molding process increases the manufacturing cost due to the need to use prepreg, and the mold design and manufacture are complicated , the investment in presses and molds is high, and the size of the product is limited by the equipment; the winding process is recognized as a relatively suitable leaf spring production process at present, but there are also phenomena such as weak interlayer bonding and easy splitting.
The use of plastic ribbons and sheet-like non-woven glass fibers can improve the lateral force of the leaf spring, but the interlayer strength will be slightly worse

Method used

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  • Preparation method for glass fibre reinforced resin composite plate spring
  • Preparation method for glass fibre reinforced resin composite plate spring
  • Preparation method for glass fibre reinforced resin composite plate spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The epoxy fiber composition used for impregnation is prepared, containing in parts by weight: 100 parts of bisphenol A epoxy resin, 30 parts of TMA, 10 parts of polysulfide toughening agent, 5 parts of diluent XY6695 parts, and 0.5 part of KH560.

[0077] Fully impregnate the glass fiber cloth and glass fiber filaments in the epoxy resin composition, lay a layer of the glass fiber cloth impregnated with epoxy resin on the surface of the upper and lower mandrels of the double mandrel, and then start layer by layer at the same time The glass fiber cloth impregnated with epoxy resin and 18 glass fiber filaments are wound side by side.

[0078]Before laying, a tension of 50N per single yarn is applied to the glass fiber filaments. As the number of winding layers increases, the tension applied to the glass fiber filaments decreases at a rate of 5N / layer, and the total number of winding layers is 8 layers.

[0079] After the 8 layers are completed, continue to wind a layer of...

Embodiment 2

[0082] The epoxy fiber composition used for impregnation is prepared, containing in parts by weight: 100 parts of bisphenol F epoxy resin, 30 parts of PAPA, 35 parts of polyether resin toughening agent, 25 parts of diluent XY73225 parts, and 0.8 parts of KH7920.8 parts.

[0083] Fully impregnate glass fiber cloth and glass fiber filaments in the above epoxy resin composition, lay a layer of glass fiber cloth impregnated with epoxy resin on the surface of the upper and lower mandrels of the four-piece mandrel, and then start layer by layer at the same time. The glass fiber cloth impregnated with epoxy resin and 20 glass fiber filaments are wound in parallel.

[0084] Before laying, a tension of 100N per single yarn is applied to the glass fiber filaments. As the number of winding layers increases, the tension applied to the glass fiber filaments decreases at a rate of 5N / layer, and the total number of winding layers is 20 layers.

[0085] After the 20 layers of winding are comp...

Embodiment 3

[0089] Prepare an epoxy fiber composition for impregnation, containing in parts by weight: 100 parts of hydrogenated bisphenol A type epoxy resin, 32 parts of polyamide curing agent, 15 parts of polyether resin toughening agent, 10 parts of thinner XY66910 parts, DL602 0.7 parts of silane coupling agent.

[0090] Fully impregnate glass fiber cloth and glass fiber filaments in the above epoxy resin composition, lay a layer of glass fiber cloth impregnated with epoxy resin on the surface of the upper and lower mandrels of the three-piece mandrel, and then start layer by layer at the same time The glass fiber cloth impregnated with epoxy resin and 24 glass fiber filaments are wound in parallel.

[0091] Before laying, a tension of 80N per single yarn is applied to the glass fiber filaments. As the number of winding layers increases, the tension applied to the glass fiber filaments decreases at a rate of 8N / layer, and the total number of winding layers is 10 layers.

[0092] Afte...

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Abstract

The invention relates to a preparation method for a glass fibre reinforced resin composite plate spring. The method comprises the following steps of: respectively soaking a glass fibre cloth and a glass fibre filament in epoxy resin, laying a layer on the upper and lower surfaces of a core model by using the glass fibre cloth; in the case of existing a preset value of the appropriate tensile force, winding the glass fibre filament on the core module, wherein the applied tensile force to the glass fibre filament gradually decreases along with the number of winding layers in the winding process; laying a layer of glass fibre cloth after the completion of winding; performing die assembly by the conventional manner to obtain an incompleted plate spring in embryo, and solidifying to obtain the glass fibre reinforced resin composite plate spring. The plate spring product prepared by the method provided by the invention has more excellent strength, is stronger in fatigue resistance than steel materials and is above 60% lighter in weight than the steel plate spring.

Description

【Technical field】 [0001] The invention relates to a preparation method of a fiber-reinforced resin composite material leaf spring, in particular to a composite material leaf spring prepared by adopting a fiber winding molding process and its composite material. 【Background technique】 [0002] Although the leaf spring is essentially different from the car mechanism parts or components considered comprehensively, as part of the suspension device, whether it is separated from the car body or combined with the car body, its function is to suspend the car's running gear on the car frame. [0003] When the car traverses the friction-free zone, the leaf spring must have a high degree of vibration flexibility for the car seat and the occupant. While the necessary structural components exhibit little flexibility and little deflection to ensure the main car stiffness, leaf springs must show great flexibility and great deflection to provide the car's friction. [0004] The current pre...

Claims

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Application Information

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IPC IPC(8): B29C70/34
Inventor 席长飞王庆明高国强王大鹏张小燕
Owner 北京国材汽车复合材料有限公司
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