Unlock instant, AI-driven research and patent intelligence for your innovation.

Forming method for cylindrical epoxy glass fiber composite products

A technology of epoxy-glass fiber composite material and molding method, which is applied in the field of molding of cylindrical epoxy-glass fiber composite material products, can solve problems such as being impossible to achieve, and achieve the effects of excellent compactness, high electrical performance and mechanical strength

Active Publication Date: 2022-05-20
南通东泰电工器材有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional molding methods cannot be realized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forming method for cylindrical epoxy glass fiber composite products
  • Forming method for cylindrical epoxy glass fiber composite products
  • Forming method for cylindrical epoxy glass fiber composite products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A kind of cylindrical epoxy glass fiber composite product molding method, including the following steps: the epoxy glass cloth on the winding machine hot coil molding, hot roller temperature control at 100 ° C -120 ° C, coiling air pressure at 0.1-0.2MPa, tension in 2.0-2.2, winding to the specified thickness after the mold and products are sealed with vacuum film, vacuumed in a hot press tank, pressurized and cured in a vacuum state, to obtain various specifications and sizes of products.

[0017] Curing process:

[0018] Temperature: heating to 120 °C at a rate of 3-5 °C / min, insulation for 1-2 hours according to the thickness of the product; then heating up to 180 °C at a rate of 3 °C / min for 2-6 hours; and finally cooling to 60 °C at a rate of 5 °C / min.

[0019] Pressure: pressurized at 130 °C, the boost rate is 20~50kPa / min, the boost is 0.5MPa; the buck is 80°C, and the buck rate is 20~50kPa / min.

[0020] The winding machine adopts hydraulic winding machine, the windi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a molding method of a cylindrical epoxy glass fiber composite product. The epoxy glass cloth is hot-rolled on a winding machine to form the hot roll. 0.1‑0.2MPa, tension at 2.0‑2.2; after winding to a specified thickness, seal the mold and the product with a vacuum film, vacuumize and place in an autoclave, pressurize, heat and cure under vacuum to obtain various specifications and sizes products. The epoxy glass cloth insulating cylinder prepared by the invention has excellent compactness, high electrical performance and mechanical strength, no layer cracking problem, and can manufacture high-performance cylindrical epoxy glass fiber composite materials with specifications of Φ10-Φ2000mm.

Description

Technical field [0001] The present invention relates to a cylindrical epoxy glass fiber composite material molding method. Background [0002] The traditional forming method of cylindrical epoxy glass fiber composite material is epoxy glass cloth winding, the inner diameter is below Φ700mm, and the process is to first prepare the adhesive glass cloth, and then wind and form on the roller reel machine, and then place it in the oven for heating and curing. The coils formed by this process have poor compactness, low electrical strength, general mechanical strength, and frequent interlayer cracking problems, and the product qualification rate is low. For products with relatively high application requirements, such as the whole cylinder type ring insulation cylinder used in the rotor of a large generator, its diameter is generally above Φ1000mm, due to the particularity of its application conditions, it is required that its overall rigidity is good, the structure is stable and reliabl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C53/56B29C53/80B29C53/84
CPCB29C53/566B29C53/8008B29C53/8041B29C53/845
Inventor 左林娜季哲周桦
Owner 南通东泰电工器材有限公司