Red mud modified PP (polypropylene) composite and method of using same to produce double-wall bellows

A double-wall corrugated pipe and composite material technology, applied in the field of corrugated pipe materials, can solve the problems of no mature case of PP corrugated pipe, no in-depth report on filling and modification of PP resin powder, etc., to achieve a good circular economy, suppress pollution, The effect of saving land

Inactive Publication Date: 2016-11-23
LINYI DONGLI PLASTIC BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Red mud modified filling is mainly involved in the field of PVC products. There is no in-depth report on the filling and modification of PP resin powder, and there is no mature case of using PP corrugated pipes.

Method used

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  • Red mud modified PP (polypropylene) composite and method of using same to produce double-wall bellows
  • Red mud modified PP (polypropylene) composite and method of using same to produce double-wall bellows

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Put the red mud powder into the mixing kneader according to the above weight, control the mixing kneader at a speed of 1000 rpm, and keep it at a temperature of 100°C for 2 minutes to control the free moisture in the red mud powder to less than or equal to 0.3%;

[0038] (2) Then add calcium stearate and solid filler alignment agent P2010 to surface activate the red mud powder, and stir in a mixing kneader for 5 minutes;

[0039] (3) The kneading temperature is lowered to 48°C, adding polypropylene mixed resin, bismaleic anhydride, POE, defoaming masterbatch, erucamide, stirring evenly, and then discharging for use.

[0040] (4) The mixture is extruded into pipes with dual-host conical and twin-screw equipment, and the double-wall corrugated pipes of dn600 and SN4 are obtained through module, vacuum, cooling, forming, cutting and packaging. (Similar to other bellows pipes, no more details).

Embodiment 2

[0042] (1) Put the red mud powder into the mixing kneader according to the above weight, control the mixing kneader at a speed of 1000 rpm, and keep it at a temperature of 110°C for 5 minutes to control the free moisture in the red mud powder to less than or equal to 0.3%;

[0043] (2) Then add calcium stearate and solid filler alignment agent P2010 to surface activate the red mud powder, and stir in a mixing kneader for 10 minutes;

[0044] (3) The kneading temperature is lowered to 50°C, adding polypropylene mixed resin, bismaleic anhydride, POE, defoaming masterbatch, and erucamide, stirring evenly, and then discharging for use.

[0045] (4) The mixture is extruded into pipes with dual-host conical and twin-screw equipment, and the double-wall corrugated pipes of dn600 and SN4 are obtained through module, vacuum, cooling, forming, cutting and packaging. (Similar to other bellows pipes, no more details).

Embodiment 3

[0047] (1) Put the red mud powder into the mixing kneader by weight, control the mixing kneader at a speed of 1000 rpm, and keep it at a temperature of 100°C for 2 minutes to control the free moisture in the red mud powder to be less than or equal to 0.3%;

[0048] (2) Then add calcium stearate and solid filler alignment agent P2010 to surface activate the red mud powder, and stir in a mixing kneader for 10 minutes;

[0049] (3) The kneading temperature is lowered to 52°C, adding polypropylene mixed resin, bismaleic anhydride, POE, defoaming masterbatch, and erucamide, stirring evenly, and then discharging for use.

[0050] (4) The mixture is extruded into pipes with dual-host conical and twin-screw equipment, and the double-wall corrugated pipes of dn600 and SN4 are obtained through module, vacuum, cooling, forming, cutting and packaging. (Similar to other bellows pipes, no more details).

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Abstract

The invention discloses red mud modified PP (polypropylene) composite and a method of using the same to produce a double-wall bellows; the component is composed of the following components according to parts by weight: 100 parts of propylene mixed resin, 60-80 parts of red mud powder, 10-20 parts of anti-impact agent, 0-10 parts of a compatibilizer, 0-10 parts of a defoaming agent, and 0-10 parts of other aids; the red mud powder is added into a mixing kneader and rotated at a controlled speed of 1000 r / m at a temperature of 100-110 DEG C for 2-5 min; calcium stearate and solid filler aligning agent P2010 are added and stirred for 5-10 min; kneading temperature is lowered to 48-52 DEG C, the polypropylene mixed resin, the compatibilizer, the anti-impact agent are added and mixed with erucamide, and the red mud modified PP composite is then added into a double-master conical twin-screw apparatus to extrude a pipe, and the pipe is molded, vacuum-processed, cool-formed, cut and packaged to obtain the double-wall bellows. The double-wall bellows produced herein has high rigidity and toughness, the red mud has good flowability in PP material and is easy to process, low in cost and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of bellows materials, in particular to a red mud modified PP composite material and a method for preparing double-wall bellows. Background technique [0002] Red mud, also known as red mud, is an industrial solid waste discharged after refining alumina from bauxite. As the world's fourth largest producer of alumina, China discharges millions of tons of red mud every year. A large amount of red mud cannot be fully and effectively utilized, and can only be stacked in a large area of ​​storage yard, which occupies a large amount of land and causes serious pollution to the environment. The red mud produced in the world is about 70 million tons every year, and the red mud produced in my country is more than 30 million tons every year. The production of a large amount of red mud has caused direct and indirect impacts on human production and life in many aspects. Therefore, it is imminent to reduce the output and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K13/06C08K9/04C08K3/36C08K3/22C08K5/1539C08K5/098C08K5/20B29C47/40B29C47/20B29B7/72B29B7/90B29C48/32
CPCB29B7/726B29B7/728B29B7/90B29C48/30B29C48/335B29C48/40B29L2023/00C08L23/12C08L2203/18C08L2205/025C08L2205/035C08L2205/08C08L2207/20C08L23/0815C08K13/06C08K9/04C08K3/36C08K2003/2206C08K2003/2227C08K2003/2272C08K5/1539C08K5/098C08K5/20
Inventor 王爱国王帅波陈志远
Owner LINYI DONGLI PLASTIC BUILDING MATERIAL CO LTD
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