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Sandwich composite pipe and rapid forming method thereof

A composite material and molding method technology, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, slender components, etc., can solve the problems of high quality of composite material pipe fittings, limited application range of pipe fittings, and cumbersome operation of molding methods, etc. Achieve the effects of shortening the production cycle, facilitating mass production, and facilitating promotion and implementation

Active Publication Date: 2012-06-13
北玻电力复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing power-bearing pipe fittings project, the core material of sandwich composite pipe fittings is mainly quartz sand, and the composite pipe fittings with quartz sand as the sandwich material have the following defects in the molding process: 1) Inner Mongolia After the skin is made, it needs to be cured naturally before the sand layer can be covered; in the process of adding sand, the sand material needs to use special equipment and needs to be covered multiple times. When the sand layer reaches the required thickness, It also needs to be naturally cured before the outer skin can be made; the same is true for the molding of the outer skin; because it needs to be naturally cured after each process, the molding time of the pipe fittings is long, and the general molding time is 6-6. 8 hours; 2) In order to prevent the resin glue remaining in the glue tank from solidifying in the glue tank during the process of adding sand, the glue tank must be cleaned in time; the equipment used for adding sand needs to be cleaned in time, otherwise it will cause It is difficult to clean the resin solidified in the glue tank or equipment, which directly affects the subsequent production process; resulting in cumbersome operation and complicated process of the molding method; 3) Due to the certain quality of quartz sand, the product quality of composite pipe fittings made of sandwich materials Large; will limit the scope of application of the fitting

Method used

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  • Sandwich composite pipe and rapid forming method thereof
  • Sandwich composite pipe and rapid forming method thereof
  • Sandwich composite pipe and rapid forming method thereof

Examples

Experimental program
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Effect test

example 1

[0060] Taking bamboo boards as an example, the manufacturing process of outline bamboo boards is as follows:

[0061] 1) Select the bamboo board with the required interlayer thickness and cut it into bamboo strips with a width of 15mm. The length is determined by the length of the product. For products with a length of more than 2m, it can be spliced ​​by two or more bamboo strips.

[0062] 2) If the pipe fitting is a round pipe product, the profile plate is expanded into a rectangular plate, and the diameter d of the round pipe is calculated by the formula πd to calculate the width of the rectangular plate, select the number of corresponding bamboo strips, and place the bamboo strips side by side on the platform , use a 50mm wide adhesive fiber tape to bond the upper surface of multiple bamboo strips, and connect multiple bamboo strips into a row to form a rectangular profile board.

[0063] If the pipe fitting is a tapered product, the profile plate is expanded into a fan-sh...

example 2

[0072] The molding method of the sandwich composite material pipe is basically the same as that of Example 1, and will not be repeated here.

[0073] The differences are:

[0074] The mixing ratio of vinyl resin glue is: 100 parts of vinyl resin glue, 3 parts of curing agent, and 1.5 parts of accelerator;

[0075] The profile board made of several strips of balsa wood is used as the sandwich layer, and the tapered tube formed by the fan-shaped surface is taken as an example. The specific molding steps are as follows: First, on the mold coated with the release agent, use a plastic film to be evenly wound from one end of the mold to the other end of the mold. The lap width of the plastic film should be 25mm; after wrapping the inner skin, Cover the fan-shaped balsa wood profile boards cut according to size directly on the surface of the inner skin, use 10mm thick adhesive fiber tape to bond the joints, use a brush to seal the gaps between the balsa wood profile boards with viny...

example 3

[0078] The molding method of the sandwich composite material pipe is basically the same as that of Example 1, and will not be repeated here.

[0079] The differences are:

[0080] The mixing ratio of vinyl resin glue is: 95 parts of vinyl resin glue, 2 parts of curing agent, and 0.8 parts of accelerator;

[0081] The profile plate made of pultruded rods is used as the sandwich layer, and the specific forming steps are as follows:

[0082] 1) Select an epoxy resin pultruded rod with an outer diameter of 10mm and a wall thickness of 3mm, calculate the expanded rectangular width of the pultruded rod profile plate according to the diameter of the product, select the number of corresponding pultruded rods, and place the pultruded rods side by side On the platform, use a steel ruler to vertically draw the pultrusion rod and draw a line after pressing it tightly. Use a diameter of 2 ~ Drill holes with a 3mm drill bit, and use glass fiber roving to penetrate and sew into a pultruded r...

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Abstract

The invention discloses a sandwich composite pipe and a rapid forming method thereof, which are mainly applied to electric power bearing pipe engineering. The sandwich composite pipe consists of an inner skin and an outer skin, wherein a sandwich layer is clamped between the inner skin and the outer skin. The sandwich composite pipe is characterized in that the sandwich layer is composed of an outline board which is formed by horizontally arranging and fixing a plurality of stripped materials into a whole. The forming method comprises the following steps of: forming the inner skin and the outer skin and paving the sandwich layer between the inner skin and the outer skin, wherein the sandwich layer is composed of the outline board which is formed by horizontally arranging and fixing a plurality of stripped materials into a whole. The forming steps of the outline board are as follows: (1) processing any one selected from a bamboo board, a cork wood, a foam material or an extruding and drawing rod into the stripped materials; and (2) juxtaposedly arranging several stripped materials on a plane and fixing into a row; compounding the inner skin, the outline board and the outer skin on a tubular die to form a pipe, and solidifying and forming. The sandwich composite pipe is light in weight, small in deformation amount, low in cost, rapid in forming and easy to popularize and apply.

Description

technical field [0001] The invention relates to a sandwich composite material pipe fitting used in electric power bearing pipe fitting engineering and a rapid prototyping method thereof. Background technique [0002] In the existing power-bearing pipe fittings project, the core material of sandwich composite pipe fittings is mainly quartz sand, and the composite pipe fittings with quartz sand as the sandwich material have the following defects in the molding process: 1) Inner Mongolia After the skin is made, it needs to be cured naturally before the sand layer can be covered; in the process of adding sand, the sand material needs to use special equipment and needs to be covered multiple times. When the sand layer reaches the required thickness, It also needs to be naturally cured before the outer skin can be made; the same is true for the molding of the outer skin; because it needs to be naturally cured after each process, the molding time of the pipe fittings is long, and t...

Claims

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Application Information

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IPC IPC(8): F16S3/00B29D23/00B32B1/08B32B27/04B32B27/12B32B27/30
Inventor 于成张雄军赵爱军郝春功吴瑶王明哲
Owner 北玻电力复合材料有限公司
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