Unlock instant, AI-driven research and patent intelligence for your innovation.

Atactic copolymerized polypropylene composite pipe and its preparation

An aluminum-plastic composite pipe, random copolymerization technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of unreported, limited, low strength, etc., achieve great social and economic benefits, easy production, manufacturing simple craftsmanship

Inactive Publication Date: 2006-01-04
金德铝塑复合管有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, aluminum-plastic composite pipes are usually polyethylene-aluminum-plastic composite pipes, and pipes are connected by pipe fittings. The leakage problem at the joint is always the biggest problem in the application of aluminum-plastic composite pipes. In order to prevent leakage, various structures have appeared. pipe fitting design, but the leakage problem has not been able to fundamentally solve
Ordinary random copolymerized polypropylene PP-R pipes have good anti-corrosion properties and can be hot-melt connected, but due to their low strength, they are also limited in some places that require both strength and complicated environmental media. Applications
Generally speaking, aluminum-plastic composite pipes have the advantages of both plastic pipes and metal pipes, but aluminum-plastic composite pipes containing random copolymerized polypropylene have not been reported so far.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1) The total weight of the inner and outer plastic layer materials is 100Kg,

[0014] Outer random copolymerized polypropylene (PP-R) 71.7Kg (Borealis).

[0015] The inner layer is random copolymerized polypropylene (PP-R) 28.3Kg (Borealis).

[0016] Add 71.7Kg and 28.3Kg of the above-mentioned random copolymerized polypropylene (PP-R) raw materials into the hopper of the inner and outer layer extruder of the aluminum-plastic pipe production line respectively, and the processing temperature is between 190-240°C.

[0017] 2) Acrylic acid or maleic anhydride modified polypropylene hot melt adhesive is used as the adhesive for the inner and outer adhesive layers, with a total weight of 12.5Kg.

[0018] Outer polypropylene hot melt adhesive: 6.4Kg (LE500T Korea SK).

[0019] Inner polypropylene hot melt adhesive: 6.1Kg (LE500T Korea SK).

[0020] Add the above-mentioned hot melt adhesives into the inner and outer layer adhesive extruders at 6.1Kg and 6.4Kg respectively, ...

Embodiment 2

[0025] 1) The total weight of the inner and outer plastic layer materials is 100Kg,

[0026] Outer random copolymerized polypropylene (PP-R) 80.2Kg (Korea Small Star).

[0027] Inner layer random copolymerized polypropylene (PP-R) 19.8Kg (Korea Small Star).

[0028] Add the above-mentioned random copolymerized polypropylene (PP-R) raw materials at 80.2Kg and 19.8Kg respectively into the hopper of the inner and outer extruders of the aluminum-plastic pipe production line, and the processing temperature is between 190-240°C.

[0029] 2) The inner and outer adhesive layers use acrylic modified polypropylene hot melt adhesive as the adhesive, with a total weight of 10.8Kg.

[0030] Outer polypropylene hot melt adhesive: 5.6Kg (DSM8305R Netherlands).

[0031] Inner polypropylene hot melt adhesive: 5.2Kg (DSM8305R Netherlands).

[0032] Add the above-mentioned hot melt adhesives into the inner and outer layer adhesive extruders at 5.2Kg and 5.6Kg respectively, and the processing ...

Embodiment 3

[0037] 1) The total weight of the inner and outer plastic layer materials is 100Kg,

[0038] Outer random copolymerized polypropylene (PP-R) 66.9Kg (Jilin Bohai Rubber & Plastic).

[0039] The inner layer is random copolymerized polypropylene (PP-R) 33.1Kg (Jilin Bohai Rubber & Plastic).

[0040] Add 71.7Kg and 28.3Kg of the above-mentioned random copolymerized polypropylene (PP-R) raw materials into the hopper of the inner and outer layer extruder of the aluminum-plastic pipe production line respectively, and the processing temperature is between 190-240°C.

[0041] 2) The inner and outer adhesive layers use acrylic modified polypropylene hot melt adhesive as the adhesive, with a total weight of 9.1Kg.

[0042] Outer polypropylene hot melt adhesive: 4.8Kg (JBH-101H Jilin Bohai Rubber & Plastic).

[0043] Inner polypropylene hot melt adhesive: 4.3Kg (JBH-101H Jilin Bohai Rubber & Plastic).

[0044] Add the above-mentioned hot melt adhesives into the inner and outer layer ad...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A composite aluminium-plastic pipe is composed of external and internal layers made of atactic copolypropene PP-R or block copolypropene, central layer made of aluminium, and the hot-fusible polypropylene layers between central layer and the external and internal layers. Its advantages are simple preparing process, high strength and good hot-fusible connection performance.

Description

Technical field: [0001] The invention relates to an aluminum-plastic composite pipe, and in particular provides a random copolymerized polypropylene aluminum-plastic composite pipe and a preparation method thereof. Background technique: [0002] Aluminum-plastic composite pipes are widely used in construction, petrochemical and many other fields due to the advantages of both the corrosion resistance of plastic pipes and the high strength of metal pipes. At present, aluminum-plastic composite pipes are usually polyethylene-aluminum-plastic composite pipes, and pipes are connected by pipe fittings. The leakage problem at the joint is always the biggest problem in the application of aluminum-plastic composite pipes. In order to prevent leakage, various structures have appeared. Pipe fitting design, but the leakage problem has not been able to fundamentally solve. Ordinary random copolymerized polypropylene PP-R pipe has good anti-corrosion performance and can be hot-melt conne...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/02F16L9/147B29K23/00B29L23/00
Inventor 梁洪群薄文海陈敏聂连秀
Owner 金德铝塑复合管有限公司