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Wood-based composite pipe and preparation method thereof

A composite pipe and wood-based technology, applied in the field of pipelines, can solve the problems of heavy steel or stainless steel pipes, large consumption of mineral resources and energy, non-recyclable products and waste, etc., to achieve good rigidity, low cost, improve the quality of gluing and The effect of production efficiency

Active Publication Date: 2015-01-07
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic pipes are light, smooth and corrosion-resistant, but they are insufficient in rigidity and strength, and consume a lot of petroleum products; glass steel pipes and FRP sand pipes require a large amount of high-energy-consuming glass fibers, and the resins used are completely dependent on petroleum. , products and waste are not recyclable, not environmentally friendly
Steel pipes or stainless steel pipes are heavy, inconvenient to transport and install, and consume a lot of mineral resources and energy
Therefore, the use of the above-mentioned pipeline products consumes a large amount of valuable petroleum resources and causes environmental pollution

Method used

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  • Wood-based composite pipe and preparation method thereof
  • Wood-based composite pipe and preparation method thereof
  • Wood-based composite pipe and preparation method thereof

Examples

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preparation example Construction

[0026] A method for preparing a wood-based composite pipe, comprising the following steps:

[0027] (1) Preparation of the inner lining layer: the inner lining layer is made of resin and felt fabric or fiber products on the straight pipe mold to form an inner lining layer with anti-seepage and smooth inner wall;

[0028] (2) The treatment of wood-based reinforcement materials is divided into the following three processes:

[0029] 1) Rotate the wood (wood section) into wood veneer;

[0030] 2) According to the method of making wooden plywood, the texture of the wooden veneer is criss-crossed, and the water-resistant adhesive is used to glue the wooden plywood with an asymmetric structure;

[0031] 3) Saw the wooden plywood into slats of fixed width, and then use a bevel milling machine to mill the end into a bevel, and use the bevel to overlap and glue to lengthen the length required for the winding process, and roll it up for later use;

[0032] (3) Preparation of wood-base...

Embodiment 1

[0041] Taking the production of a wood-based composite pipe with a diameter of 200mm as an example, the specific steps are as follows:

[0042] 1) Treatment of wood-based reinforcement materials:

[0043] a) The wood is peeled and processed, dried to a moisture content of 8% to 10%, and made into 2m (along the fiber direction) × 1m (transverse fiber direction) × 1.0mm (thickness) and 2m (transverse fiber direction) × 1m ( Along the fiber direction) × 1.0mm (thickness) two sizes of wood veneer;

[0044] b) The fiber direction of two types of wood veneers is formed at 90 degrees, and glued with phenolic adhesive to form a two-ply board of 2m×1m×1.8mm (compression rate is about 20%);

[0045] c) Fix the width of the plywood, and cut it into strips with the size of length × width × thickness 2m × 100mm × 1.8mm;

[0046] d) Mill out a 7mm-long slope on each of the two end faces in the length direction of the slat, and glue the front and rear slopes together to form a long coil of...

Embodiment 2

[0055] Taking the production of a composite pipe with a diameter of 300mm as an example, the specific steps are as follows:

[0056] 1) Treatment of wood-based reinforcement materials:

[0057] a) The wood is peeled and processed, dried to a moisture content of 8 to 10%, and made into 2m (in the direction of the fiber) × 1m (in the direction of the fiber) × 1.5mm (thickness) and 2m (in the direction of the fiber) × 1m (in the direction of the fiber) Fiber direction) × 1.2mm wood veneer in 2 specifications and sizes;

[0058] b) Assemble the two kinds of veneer fiber directions at 90 degrees, in which the wood fibers of the 1.2mm veneer are arranged horizontally, and glued with a phenolic adhesive to form a 2m×1m×2.1mm two-layer plywood;

[0059] c) Fix the width of the two-ply board, and cut it into strips with the size of length × width × thickness 2m × 200mm × 2.1mm;

[0060] d) Mill out an 8mm-long bevel on each of the two end faces in the length direction of the slat.

...

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Abstract

The invention discloses a wood-based composite pipe and a preparation method thereof. The pipe is composed of an inner lining layer, an inner interface adhesive layer, a wood-based strengthening layer, an outer interface adhesive layer, and an outer protective layer from inside to outside along the diameter direction; wherein the inner lining layer, the wood-based strengthening layer, and the outer protective layer are integrated into a solid pipe through adhesives. The preparation method comprises the following steps: (1) preparing the inner lining layer; (2) processing a wood-based strengthening material; (3) preparing the wood-based strengthening layer; (4) preparing the outer protective layer. The wood-based composite pipe has the following advantages: (1) the wood is obtained from artificial fast-growing woods and has the advantages of rich resources, low cost, large ratio of strength to weight, and high rigidity; (2) the pipe is prepared by winding dual composite plates with intercrossed fibers, and thus technical requirements in different application occasions can be met; (3) the pipe is heated and pressed during the winding process, the pipe is heated and winded at the same time, the winding and curing can be finished simultaneously, and the gluing quality and production efficiency are improved; (4) the milling slope of the dual composite plate, and the lap joint assembly are winded and integrated together after the gluing, and the pipe strength is high, the production efficiency is high, and the surface is smooth.

Description

technical field [0001] The invention relates to a wood-based composite pipe used in agricultural irrigation, water supply and drainage projects, and petrochemical anticorrosion occasions and a preparation method thereof, belonging to the technical field of pipes. Background technique [0002] At present, in water supply and drainage projects and petrochemical anticorrosion occasions, the pipes used generally use organic plastic pipes such as polyvinyl chloride pipes, polyethylene pipes, glass steel pipes, glass steel sand pipes, or inorganic non-metallic pipes such as cement pipes, or steel pipes, Metal pipes such as stainless steel pipes. Plastic pipes are light, smooth and corrosion-resistant, but they are insufficient in rigidity and strength, and consume a lot of petroleum products; glass steel pipes and FRP sand pipes require a large amount of high-energy-consuming glass fibers, and the resins used are completely dependent on petroleum. , Products and waste are not rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08B32B21/04B32B21/08B32B27/04B32B7/12B32B33/00B32B37/02B32B37/06B32B37/10B32B37/12
CPCB32B1/08B32B5/02B32B7/12B32B21/08B32B37/02B32B37/06B32B37/10B32B37/12B32B38/04B32B38/18B32B2255/08B32B2260/021B32B2260/046B32B2307/50B32B2307/752
Inventor 张齐生陈文强蒋身学
Owner NANJING FORESTRY UNIV
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