Plastic-bamboo composite tube coiled forming technology method

A technology of bamboo-plastic composite and process method, which is applied in the direction of manufacturing tools, adhesive types, wood processing appliances, etc., can solve the problems of low loose content of bamboo filling materials, easy bias exposure of bamboo skeleton, etc., and achieve comprehensive mechanical properties Excellent, strong competitive advantage, the effect of improving strength and rigidity

Inactive Publication Date: 2008-03-19
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the existing bamboo-plastic composite pipe centrifugal casting that the bamboo skeleton is easily biased and exposed, and the loose content of the bamboo filling material is low, and to develop a bamboo-plastic composite pipe product with high compactness, strength and rigidity. Good quality, high bamboo material content, relatively simple technical requirements for bamboo-plastic composite pipe rolling molding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The rolling molding process of bamboo-plastic composite pipe comprises the following steps:

[0027] (1) Cut the bamboo into 1-30mm wide and 0.5-5mm thick strips of bamboo strips. After boiling with alkaline water to degrease, dry and dehydrate and activate surfactants, the activation treatment method is to spray on the surface of bamboo strips. KH-550 silane coupling agent can improve the adhesion between bamboo materials and resin mastic.

[0028] (2) Woven into mat-shaped bamboo braids with a width of 200-6000mm and which can be matched with the mold tube,

[0029] (3), evenly apply a layer of resin mastic on the mat-shaped bamboo weaving, and make the resin mastic penetrate into the gaps of the mat-shaped bamboo weaving,

[0030] Resin cement comprises the raw material of following weight ratio:

[0031] Unsaturated polyester: chalk powder: carbon black = 35:37:3, and mix well.

[0032] (4), coating a layer of silicone oil release agent film on the outer surface ...

Embodiment 2

[0036] Cut the bamboo into strips of 1mm wide and 0.5mm thick, and spray the aluminum ester coupling agent DL-2411 on the surface of the bamboo strips.

[0037] It is woven into a mat-shaped bamboo braid with a width of 200mm and can be matched with the mold tube.

[0038] Winding 5 layers of mat-shaped bamboo fabric on the tube mold,

[0039] Resin cement comprises the raw material of following weight ratio:

[0040] Unsaturated polyester: epoxy resin: wollastonite powder = 26:5:42;

[0041] The heating and curing temperature is 100°C, and the time is 0.5 hours. When heating and curing molding, the pipe mold can be rotated while heating, and the rotation speed is 100 rpm.

[0042] Others are the same as embodiment 1.

Embodiment 3

[0044] Cut the bamboo into 15mm wide and 2.5mm thick bamboo strips, spray alumina ester coupling agent DL-2411 on the surface of the bamboo strips, and weave it into a mat-shaped bamboo braid with a width of 2000mm that can be matched with the mold tube ,

[0045] Wind 8 layers of mat-shaped bamboo fabric on the tube mold,

[0046] Resin cement comprises the raw material of following weight ratio:

[0047] Phenolic resin: talcum powder: iron red = 15:20:5;

[0048] The heating and curing temperature is 60°C and the time is 1.5 hours,

[0049] Others are the same as embodiment 1.

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PUM

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Abstract

The invention relates to a bamboo-plastic composite pipe rolling forming technique, which solves a problem that present bamboo-plastic composite pipe centrifugal casting has the defects of easy offset and exposure, loose bamboo filling materials, low content, etc. The specific processing steps are to cut bamboo materials into bamboo long strips, on which degreasing, dehydration and surface active agent activation treatments are implemented. A mat bamboo weaved object are precast. Resin mortars are evenly coated on the mat bamboo weaved object. Silicon oil demould agent is coated on the outer surface of the mould pipe. More than one layer of the mat bamboo weaved object is helicoidally tensioned and winded on the mould pipe and is heated and solidified for forming. Then, the object is cooled to the room temperature and is demoulded to obtain the bamboo-plastic composite pipe. The manufacturing process condition requirements of the invention are relative simple. The compactness of the bamboo filling materials is greatly improved. The strength and the rigidity of the pipe are improved. And the content of the bamboo materials reaches to 50-70 percentage, which is beneficial to the further lowering of the cost. The invention is especially applied to the production of pipe products with large diameter.

Description

technical field [0001] The invention relates to a preparation process of a bamboo-plastic composite material, in particular to a rolling forming process of a bamboo-plastic composite pipe. Background technique [0002] Existing plastic pipe production mainly includes several methods of extrusion, winding and centrifugal casting. The centrifugal method is mainly used in the production of reactive plastic pipes, such as the production of sand-filled glass steel pipes and modified MC nylon pipes, and the production of bamboo-plastic composite pipes in the patent ZL 03 2 59654.5, in which modified MC nylon pipes and sand-filled glass steel pipes are produced. The pipe production process is complicated and the cost is high; while the centrifugal casting of bamboo-plastic composite pipes has the problems that the bamboo skeleton is easily biased and exposed, and the loose content of the bamboo filling material is low, which affects the industrial production efficiency and product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/08B27L5/00B27K5/00C09J167/06C09J163/00C09J161/06C09J11/00
Inventor 焦明华俞建卫张洪科张飞帆沈建军
Owner HEFEI UNIV OF TECH
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