PP/PA composite material used for corrugated pipe and preparation method thereof

A composite material, corrugated pipe technology, applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve the problems of poor heat resistance, cost reduction, etc., to achieve excellent electrical insulation, excellent high temperature resistance performance , the effect of high toughness

Inactive Publication Date: 2010-06-09
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But limited to the characteristics of the material itself, each bellows has its own advantages and disadvantages, for example, the heat resistance of PVC material is not good, and the bellows made of PP or PE material has poorer mechanical properties than the bellows made of PA. , but it is better than PA bellows in terms of product stability and water absorption
If PA and PP are made of composite materials to prepare corrugated pipes, on the one hand, the respective shortcomings of PP and PA materials can be overcome, and on the other hand, the cost can be greatly reduced, which has a good cost performance, but there are no related products and technical reports so far.

Method used

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  • PP/PA composite material used for corrugated pipe and preparation method thereof
  • PP/PA composite material used for corrugated pipe and preparation method thereof
  • PP/PA composite material used for corrugated pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A) Preparation of filler masterbatch

[0033] 27 kg of polypropylene powder with a melt flow index of 1.2 g / 10 min and 30 kg of a mixture of particulate inorganic filler-calcium carbonate and aluminum silicate whiskers with an average particle size of 3 microns were pre-mixed evenly, and then 0.2 1 kg of heat stabilizer Irganox 1010 and 0.2 kg of processing aids, then melt and granulate in a twin-screw extruder at a processing temperature of 140-250°C;

[0034] B) Preparation of composite materials

[0035] 60 kg of polypropylene, 25 kg of nylon 6, 10 kg of compatibilizer-maleic anhydride grafted polypropylene (PP-g-MAH), 5 kg of toughening agent-EPDM, 2 kg of filler masterbatch, 0.2 kg of light Stabilizer, 0.2 kg of heat stabilizer and 0.3 kg of processing aid are added into a twin-screw extruder with a length-to-diameter ratio of 40:1, melt-mixed and dispersed at 245° C., extruded and granulated, to obtain the present invention. PP / PA composite material.

[0036] T...

Embodiment 2

[0041] 60 kg of polypropylene, 25 kg of nylon 6, 5 kg of compatibilizer-maleic anhydride grafted POE (POE-g-MAH), 5 kg of toughening agent-POE, 0.2 kg of light stabilizer, 0.2 kg of heat stabilizer Add additives and 0.3 kg of processing aids into a twin-screw extruder with a length-to-diameter ratio of 40:1, melt, mix and disperse at 245°C, extrude and granulate, and obtain the PP / PA composite material of the present invention.

[0042] The PP / PA composite material prepared in this example has high toughness, excellent impact resistance and high heat distortion temperature, and has good surface gloss, good chemical corrosion resistance, UV aging resistance and wear resistance Friction performance, electrical insulation performance is greater than 400MΩ, the specific performance is shown in Table 2:

[0043] The performance data of the PP / PA composite material of table 2 present embodiment

[0044]

Embodiment 3

[0046] A) Preparation of filler masterbatch

[0047] 27 kg of polyethylene with a melt flow index of 0.8 g / 10 min and 30 kg of a mixture of particulate inorganic filler-barium sulfate and calcium sulfate whiskers with an average particle diameter of 1 micron are pre-mixed uniformly, and then 0.2 kg of hot water is added. Stabilizer Irganox 1010 and 0.2 kg of processing aids, then melt and granulate in a twin-screw extruder at a processing temperature of 140-250°C;

[0048] B) Preparation of composite materials

[0049] 60 kg of polypropylene, 25 kg of nylon 6, 5 kg of compatibilizer-maleic anhydride grafted POE (POE-g-MAH), 5 kg of toughening agent-TPV, 2 kg of filler masterbatch, 0.2 kg of light stabilized agent, 0.2 kg of heat stabilizer and 0.5 kg of processing aid are added to a twin-screw extruder with a length-to-diameter ratio of 40:1, melted, mixed and dispersed at 245 ° C, extruded and granulated, and the PP described in the present invention is obtained. / PA compos...

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Abstract

The invention discloses a PP/PA composite material used for a corrugated pipe, which is prepared by processing polypropylene, nylon, compatilizer, toughening agent, filling master batch, light stabilizer, heat stabilizer and processing aid. The PP/PA composite material is prepared by feeding the components into mixing equipment according to a proportion, and melting, mixing, scattering, extruding and granulating the components at the temperature of between 210 and 280 DEG C. The PP/PA composite material not only has higher toughness, excellent high impact resistance and bending property and extremely good high temperature resistance, but also are excellent in the aspects of surface gloss, abrasion resistance, chemical corrosion resistance, electric insulation and the like, and solves the defect problems of insufficient heat resistance of the conventional PP corrugated pipe, over-high price of the PA corrugated pipe; and in addition, a preparation method for the PP/PA composite material is simple and meets the requirement of industrialized production.

Description

technical field [0001] The invention relates to a PP / PA composite material and a preparation method thereof, in particular to a PP / PA composite material for corrugated pipes and a preparation method thereof, belonging to the technical field of composite materials. Background technique [0002] The bellows is a cylindrical thin-walled elastic shell with transverse corrugations, which has the functions of conversion, compensation, connection and energy storage. Compared with pipes made of the same material, corrugated pipes have the advantages of light weight, beautiful appearance, durability, low cost and good elasticity, so they are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other fields. In use, the open end of the bellows is fixed, and the sealed end is in a free state. When working, it changes along the longitudinal or radial direction of the pipe under the action of internal or external pressure, which plays...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L77/00C08L77/02C08L77/06C08L51/06C08L51/04C08L23/06C08L23/00C08L23/16C08L53/02C08K13/04C08K3/26C08K7/10C08K3/30C08K7/08C08J3/22B29B9/06F16L11/11
Inventor 杨泽夏建盟何威陶四平肖鹏张春怀
Owner SHANGHAI KINGFA SCI & TECH
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