A composite winding thermoplastic fiberglass steel pipe and its preparation method

A thermoplastic and composite technology, used in rigid pipes, pipes, mechanical equipment, etc., can solve the problems of low axial tensile strength and high hoop tensile strength, and achieve high production efficiency, high hoop tensile strength, Effect of high axial tensile strength

Active Publication Date: 2017-10-31
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, FRP pipes mainly have high hoop tensile strength and low axial tensile strength; while construction in trenchless underground requires pulling pipes to have sufficient axial tensile strength

Method used

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  • A composite winding thermoplastic fiberglass steel pipe and its preparation method
  • A composite winding thermoplastic fiberglass steel pipe and its preparation method
  • A composite winding thermoplastic fiberglass steel pipe and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the composite-wound thermoplastic glass steel pipe is composed of an inner layer 1, an intermediate layer 2 and an outer layer 3. The continuous glass fiber reinforced thermoplastic resin prepreg tape 4 has a belt width of 41mm, and the continuous glass fiber reinforced thermoplastic resin prepreg tape 4 is continuous glass fiber reinforced thermoplastic polypropylene with a glass fiber content of 55%. The thickness of the prepreg tape is 0.2mm. The diameter of the movement mold 5 is 150 mm. First wind the inner layer 1, such as figure 2 As shown, the hoop winding angle α is 85°. The prepreg tape is heated at 140°C and then melted, bonded to the surface of the winding core mold 5, and wound to the right end of the winding core mold 5, and then wound to the left. The winding angle is not Change, layer by layer, forming inner layer 1 with a thickness of 2mm. Then wind the middle layer 2, such as image 3 As shown, the spiral winding angle β is ...

Embodiment 2

[0032] Such as figure 1 As shown, the composite-wound thermoplastic glass steel pipe is composed of an inner layer 1, an intermediate layer 2 and an outer layer 3. The continuous glass fiber reinforced thermoplastic resin prepreg tape 4 has a bandwidth of 40 mm, and the continuous glass fiber reinforced thermoplastic resin prepreg tape 4 is continuous glass fiber reinforced thermoplastic polypropylene with a glass fiber content of 75%. The thickness of the prepreg tape is 0.1 mm. The diameter of the movement mold 5 is 50 mm. First wind the inner layer 1, such as figure 2 As shown, the hoop winding angle α is 75°. The prepreg tape is heated at 130°C and then melted, bonded to the surface of the winding core mold 5, and then wound to the left after being wound to the right end of the winding core mold 5. The winding angle is not Change, layer in turn, forming inner layer 1 with a thickness of 0.1mm. Then wind the middle layer 2, such as image 3 As shown, the spiral winding ang...

Embodiment 3

[0034] Such as figure 1 As shown, the composite-wound thermoplastic glass steel pipe is composed of an inner layer 1, an intermediate layer 2 and an outer layer 3. The continuous glass fiber reinforced thermoplastic resin prepreg tape 4 has a bandwidth of 22mm, and the continuous glass fiber reinforced thermoplastic resin prepreg tape 4 is continuous glass fiber reinforced thermoplastic polypropylene with a glass fiber content of 60%. The thickness of the prepreg tape is 0.25mm. The diameter of the movement mold 5 is 200 mm. First wind the inner layer 1, such as figure 2 As shown, the hoop winding angle α is 88°. The prepreg tape is heated at 150°C and then melted, adhered to the surface of the winding core mold 5, and wound to the right end of the winding core mold 5, and then wound to the left. The winding angle is not Change, layer by layer to form inner layer 1 with a thickness of 5mm. Then wind the middle layer 2, such as image 3 As shown, the spiral winding angle β is ...

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Abstract

The invention relates to a composite winding thermoplastic glass steel pipe and its preparation method. The pipe is composed of an inner layer, a middle layer and an outer layer, wherein the inner layer is a continuous glass fiber reinforced thermoplastic prepreg tape layer wound in a hoop direction, and the middle layer is a spiral Winding continuous glass fiber reinforced thermoplastic prepreg tape layer, the outer layer is hoop wound continuous glass fiber reinforced thermoplastic resin prepreg tape layer. Compared with the prior art, the present invention not only has a higher hoop tensile strength, but also has a higher axial tensile strength, which can meet the requirements for pulling pipes in trenchless construction; the composite winding of the present invention During the winding process of thermoplastic FRP pipes, it is only necessary to adjust the winding process and change the winding angle, without changing the bandwidth of the continuous fiber reinforced thermoplastic resin composite material prepreg tape. The entire winding process is continuous and the production efficiency is high.

Description

Technical field [0001] The invention relates to a composite winding pipe material and a preparation method thereof, in particular to a composite winding thermoplastic glass steel pipe material and a preparation method thereof. Background technique [0002] The existing glass steel pipes are mostly composed of continuous glass fiber reinforced thermosetting resin materials. Although this material has excellent strength and modulus, its brittleness and non-recyclability of thermosetting resin make it difficult to survive in the international environment of energy saving and emission reduction. Thermoplastic glass fiber reinforced plastic not only has ideal strength and modulus, but also the material toughness is much better than thermoset glass fiber reinforced plastic. At the same time, thermoplastic glass fiber reinforced plastic also has the advantages of recycling and reuse, and it has developed rapidly in recent years. [0003] Patent CN101474868A provides equipment for prepari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/16F16S3/00B29C70/30
CPCB29C70/305F16L9/16
Inventor 黄标
Owner HEFEI GENIUS NEW MATERIALS
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