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High-performance wood-based composite pressure conveyer pipe and preparation method

A high-performance, conveying pipe technology, applied in the field of pipelines, can solve the problems of transportation, inconvenient installation, high energy consumption, environmental pollution, etc., and achieve the effect of improving gluing quality and production efficiency, improving comprehensive benefits, and high strength

Inactive Publication Date: 2015-09-09
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement pipes are heavy, inconvenient to transport and install, and consume a lot of cement and steel in production. At present, except for agricultural irrigation projects, other industries have rarely used them; steel pipes or stainless steel pipes are also heavy and consume a lot of mineral resources and resources. Energy; plastic pipes are light, smooth and corrosion-resistant, but have insufficient rigidity and strength; glass steel pipes need to use a large amount of high-energy-consuming glass fibers, and the resin used is completely dependent on petroleum, and the products and waste are not recyclable and not environmentally friendly
The above-mentioned pipelines all need to consume a large amount of mineral resources, causing serious environmental pollution
[0003] Patent CN201410319366 relates to a preparation method of bamboo-wrapped wood-based composite pressure delivery pipe, using bamboo strips and sand glue layer by layer to form a spiral cross-winding to form the pipe wall, due to the separation and overlap of bamboo strips, and the sand during winding Inconsistencies in the dripping speed of the glue lead to uneven glue application, and its strength cannot meet the requirements of high-pressure delivery pipes (such as natural gas delivery and factory liquid delivery); patent 201410425121.0 adopts a kind of wood veneer glued into a long two-ply sheet coil, The helical wire is dipped in glue before winding, pressurized and heated after winding to make a pipe with a certain wall thickness
Since it is all made of wood, although the pipe wall is uniform, there is still the disadvantage that the compressive strength of the pipe wall is not high enough

Method used

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  • High-performance wood-based composite pressure conveyer pipe and preparation method
  • High-performance wood-based composite pressure conveyer pipe and preparation method
  • High-performance wood-based composite pressure conveyer pipe and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] control figure 1 , The high-performance wood-based composite pressure delivery pipe with a diameter of 300mm is made of carbon fiber as a reinforced material. The structure from the inside to the outside is: inner lining layer 1, reinforcement layer 2, wood layer 3, and outer protective layer 4. Its preparation process is as follows:

[0040](1) Preparation of the inner lining layer: evenly coat a layer of butter and a release agent with equivalent performance on the straight tube mold with a taper of 3:1000, wrap the PET film, and coat the surface of the film with vinyl ester resin immediately after covering the surface felt , Coat a layer of vinyl ester resin and then cover chopped strand mat and grid cloth. After the resin is cured, an inner lining layer with anti-seepage and smooth inner wall is formed. The thickness of the inner lining layer is about 3mm. The resin grade is anti-corrosion grade or food grade ;

[0041] (2) Preparation of reinforcing layer materia...

Embodiment 2

[0046] control figure 1 ., using carbon fiber as a reinforced material to manufacture a high-performance wood-based composite pressure delivery pipe with a diameter of 600mm, its structure is the same as in the examples, and the preparation process is as follows:

[0047] (1) lining layer preparation: same as embodiment 1;

[0048] (2) preparation of strengthening layer material: same as embodiment 1;

[0049] (3) Preparation of woody base layer material: Rotate wood sections into wood veneers with a thickness of 1.2mm, dry to a moisture content of 8%; according to the method for making wood plywood, coat one side of the wood veneer with phenolic or equivalent performance Adhesive, longitudinal veneer and horizontal veneer texture staggered blanks, or textured 85° blanks, pressurized and glued to form a wooden plywood with an asymmetric structure, the thickness is about 2.1mm; saw the wooden plywood into fixed width The slats are then milled into bevels with a bevel milling ...

Embodiment 3

[0053] A high-performance wood-based composite pressure delivery pipe with a diameter of 400mm was manufactured with aluminum alloy as a reinforced material, and its structure was the same as in Example 1. The preparation process was as follows:

[0054] (1) lining layer preparation: same as embodiment 1;

[0055] (2) Preparation of reinforcing layer material: Aluminum alloy thin plate with a thickness of 0.5mm is cut into a strip with a width of 250mm and a length designed according to the length of the tube, and is rolled up for later use;

[0056] (3) Preparation of woody base layer material: Rotate wood sections into wood veneers with a thickness of 1.0mm, and dry to a moisture content of 8%; according to the method for making wood plywood, one side of the wood veneer is coated with phenolic or equivalent performance. Adhesive, vertical veneer and horizontal veneer staggered billet, or textured 85° billet, pressurized and glued to form a wooden plywood with an asymmetric s...

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Abstract

The invention provides a high-performance wood-based composite pressure conveyer pipe. The conveyer pipe is formed by four kinds of functional layers of an inner liner layer 1, a strengthened layer 2, a base layer 3 made of multiple layers of wooden single plates, and an external protection layer 4, which are arranged from inside to outside. The layers are adhered together by selecting special adhesive according to different types of materials, so a firm pipe wall is formed. The manufacturing method comprises following steps of 1) preparation of the inner liner layer; 2) preparation of the strengthened layer; 3) preparation of the wooden base layer; and 4) preparation of high-performance wood-based composite pressure conveyer pipe. The preparation method is advantageous in that strength in all directions of the pipe can be designed and technical requirements of different usage occasions are satisfied; and the conveyer pipe is advantageous in that the conveyer pipe is high in strength, light, convenient to transport and install, and high in environmentally-friendly performance; continuous supplying of main materials can be achieved; and non-renewable mineral resources are hardly consumed.

Description

technical field [0001] The invention relates to a high-performance wood-based composite pressure delivery 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] Cement pipes, steel pipes, or polyvinyl chloride pipes, polyethylene pipes, glass steel pipes, etc. are commonly used in water supply and drainage projects and petrochemical pipelines. Cement pipes are heavy, inconvenient to transport and install, and consume a lot of cement and steel in production. At present, except for agricultural irrigation projects, other industries have rarely used them; steel pipes or stainless steel pipes are also heavy and consume a lot of mineral resources and resources. Energy; plastic pipes are light, smooth and corrosion-resistant, but have insufficient rigidity and strength; glass steel pipes require a large amount of hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16F16L58/10F16L58/12B32B7/12B32B15/10B32B21/10B32B3/12B32B37/02B32B37/06B32B37/10B32B37/12B29C41/22
CPCB29C41/22B32B3/12B32B7/12B32B15/10B32B21/10B32B37/02B32B37/065B32B37/10B32B2037/1253F16L9/16F16L58/1054F16L58/12
Inventor 张齐生蒋身学陈文强张晓东孙丰文李延军许斌何文程大莉
Owner NANJING FORESTRY UNIV
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