CN106380658A - PE corrugated pipe with strong pressure resistance and preparation method thereof - Google Patents

Abstract

The invention discloses a PE corrugated pipe with strong pressure resistance. The PE corrugated pipe is prepared from high density polyethylene, inorganic montmorillonite, 1-butyl-3-methylimidazolium hexafluorophosphate, an ethanol aqueous solution with a concentration of 40-60%, butanediamine, acrylonitrile, Raney nickel, alpha-(diphenylphosphino)acetic acid, borax, a dimethyl siloxane mixed ring, isoprene rubber, p-hydroxyanisole, tetramethyl ammonium hydroxide, otcamethylcyclotetrasiloxane, polyvinyl chloride, graphene and diisooctyl phenyl phosphite. The PE corrugated pipe has the characteristics of strong pressure resistance, good corrosivity, static resistance, flame retardation and long service life.

Description

Strong PE corrugated pipe of a kind of crushing resistance and preparation method thereof

Technical field

The present invention relates to a kind of high-molecular tubular material, the strong PE corrugated pipe of more particularly to a kind of crushing resistance and its system Preparation Method.

Technical background

Polyethylene pipe good corrosion resistance, low cost, lightweight, easy for installation, service life are long, are the good of metal tube Replacing part.Most of plastic pipes or metal pipe material are in pumped (conveying) medium, mainly using water as the carrier of conveying material, and various Solid particle, powder, the conveying of slurry are because conveying capacity is big, various solid powders are big with the contact area of tube wall, its abrasion and corruption Erosion is difficult to meet use requirement than water as even more serious during carrier, traditional metallic conduit, and common plasticses pipeline more cannot win Appoint and bear.PE tubing as a kind of high abrasion, impact resistance, corrosion-resistant, low temperature resistant, self-lubricating, non-scaling, internal pressure strength high, Little, nontoxic, the light new type plastic pipe of noise, is that the high-performance engineering that solid, liquid, gas tri-state material all can convey is moulded Expects pipe material.But polyethylene pipe is also easy to produce electrostatic and inflammable, limit the range of application of polyethylene pipe.

Author Wang Xinglong etc. exists《Flame-retardant and anti-static PE tube material Research on processing technology》The method of forming is directly added into using masterbatch, Antistatic additive is added in polymer in extrusion, and the processing to flame-retardant and anti-static PE tube material and the shaping of crowded pipe add The techniques such as work are studied, and result of the test shows：The flame-retardant and anti-static PE tube material good dispersion producing, properties of product are steady Fixed, pollution-free, be conducive to large-scale production.

Content of the invention

It is an object of the invention to provide strong PE corrugated pipe of a kind of crushing resistance and preparation method thereof.

The present invention adopts the following technical scheme that to realize above-mentioned purpose：

A kind of strong PE corrugated pipe of crushing resistance is it is characterised in that it is prepared from by the raw material of following weight portion：Highdensity 200 parts of polyethylene, inorganic montmorillonite 8-10 part, 1- butyl -3- methylimidazole hexafluorophosphate 15-20 part, the ethanol of 40-60% Aqueous solution 80-100 part, butanediamine 15-20 part, acrylonitrile 20-25 part, Raney's nickel 1-2 part, α-（Hexichol phosphorus base）Acetic acid 40-45 Part, borax 8-10 part, dimethyl siloxane mixed methylcyclosiloxane 15-20 part, isoprene rubber 15-20 part, MEHQ 3-5 part, TMAH 3-4 part, octamethylcy-clotetrasiloxane 15-20 part, polyvinyl chloride 8-10 part, Graphene 6-8 part, phosphorous acid Benzene di-isooctyl 2-3 part.

The strong PE corrugated pipe of described crushing resistance is it is characterised in that it is prepared from by following steps：

（1）Inorganic montmorillonite and 1- butyl -3- methylimidazole hexafluorophosphate are mixed, adds the ethanol of 40-60% water-soluble Liquid, 70-80 DEG C, mix and blend 4-6h, filters, obtains organo montmorillonite；Organo montmorillonite, butanediamine, acrylonitrile, Raney's nickel are mixed Close uniformly, 80-90 DEG C of mix and blend 8-10h, addition α-（Hexichol phosphorus base）Acetic acid, reduces temperature to 65-75 DEG C, stirring reaction 5- 6h, adds borax, rises high-temperature to 80-90 DEG C, and stirring reaction 8-10h obtains branched phyllosilicate；

（2）Add dimethyl siloxane mixed methylcyclosiloxane to polymerization reaction kettle, vacuum is -0.09MPa, vacuumizes dehydration at 80 DEG C 3-5h；After dehydration terminates, unload vacuum, add isoprene rubber, MEHQ, TMAH, prestox ring four silicon Oxygen alkane, heats up after stirring, and seals ring-opening polymerization 5-8h at 105 DEG C ± 5 DEG C of temperature control；Polymerisation terminates, and is warmed up to 200 DEG C, vacuum -0.1MPa, vacuumize removing low molecular weight volatile and divide 3-4h；

（3）First high density polyethylene (HDPE), polyvinyl chloride, Graphene, branched phyllosilicate, phosphorous acid benzene di-isooctyl are put into height In mixed machine, after the stirring of 30-40min, mixed material is added in extruder, each section of temperature of extruder screw is 150- 220 DEG C, the material of extrusion is masterbatch through pelletizing, drying, cooling；By masterbatch and step（2）Product mixing add extruder in, The draw ratio of extruder is 30, and each section of temperature of extruder screw is 40-200 DEG C, and compound rotates through high-temperature heating and screw rod It is sufficiently mixed and is extruded, extruded stock is heating, material is plasticized into molten, with the head die of different size under pressurization Tool and calibration sleeve extrude corresponding pipe, then again through corresponding ripple module and enlarging module cooling and shaping, Ran Houjing Cross length measuring device and cutter sweep, tubing, by automatically customized cut-off, finally enters automatic expanding machine, tubing head is expanded Mouth processing, obtains PE corrugated pipe.

The density of described highdensity polyethylene is in 0.950～0.985g/cm³Between.

The invention has the beneficial effects as follows：It is to tie using between phyllosilicate lamella using lamella silicate modified polyethylene The little characteristic of weaker, piece interlayer coefficient of friction with joint efforts, when carrying out melt processing, Relative sliding between silicate lamella, from And the unordered entanglement between polyethylene macromolecular can be reduced, improve the mobility of its melt, improve its processing characteristics；Isoprene rubber There is excellent temperature tolerance, excellent weatherability, good electrical insulating property, the processing flowing of the polyethylene through organosilane graft Property be greatly improved, can use common extrusion equipment to be processed, prepared PE tubing has fabulous wearability, resistance to Corrosivity and lower temperature resistance；By adding Graphene in tubing, the intensity of tubing can be greatly enhanced, rationally the assembling of interpolation Fire retardant and antistatic additive, make polyvinyl piping materials obtain good fire-retardant and antistatic property.Due to using interpolation Graphene Mode increasing intensity it is not necessary to thicker, the low cost that makes tubing, and lightly, easy to use, applied widely.

Specific embodiment

The strong PE corrugated pipe of the crushing resistance of the present embodiment, it is prepared from by the raw material of following weight portion：Highdensity 200 parts of polyethylene, 10 parts of inorganic montmorillonite, 20 parts of 1- butyl -3- methylimidazole hexafluorophosphate, 60% ethanol water 100 Part, 20 parts of butanediamine, 25 parts of acrylonitrile, 2 parts of Raney's nickel, α-（Hexichol phosphorus base）45 parts of acetic acid, 10 parts of borax, dimethyl siloxane 20 parts of mixed methylcyclosiloxane, 20 parts of isoprene rubber, 5 parts of MEHQ, 4 parts of TMAH, octamethylcy-clotetrasiloxane 20 parts, 10 parts of polyvinyl chloride, 8 parts of Graphene, 3 parts of phosphorous acid benzene di-isooctyl.

The strong PE corrugated pipe of the crushing resistance of the present embodiment, it is prepared from by following steps：

（1）Inorganic montmorillonite and 1- butyl -3- methylimidazole hexafluorophosphate are mixed, add 60% ethanol water, 80 DEG C, mix and blend 6h, filters, obtains organo montmorillonite；Organo montmorillonite, butanediamine, acrylonitrile, Raney's nickel are mixed, 90 DEG C of mix and blend 10h, addition α-（Hexichol phosphorus base）Acetic acid, reduces temperature to 75 DEG C, and stirring reaction 6h adds borax, rises High-temperature to 90 DEG C, stirring reaction 10h, obtain branched phyllosilicate；

（2）Add dimethyl siloxane mixed methylcyclosiloxane to polymerization reaction kettle, vacuum is -0.09MPa, vacuumizes dehydration at 80 DEG C 5h；After dehydration terminates, unload vacuum, add isoprene rubber, MEHQ, TMAH, prestox ring four silica Alkane, heats up after stirring, and seals ring-opening polymerization 8h at 105 DEG C ± 5 DEG C of temperature control；Polymerisation terminates, and is warmed up to 200 DEG C, vacuum -0.1MPa, vacuumize removing low molecular weight volatile and divide 4h；

（3）First high density polyethylene (HDPE), polyvinyl chloride, Graphene, branched phyllosilicate, phosphorous acid benzene di-isooctyl are put into height In mixed machine, after the stirring of 40min, mixed material is added in extruder, each section of temperature of extruder screw is 150-220 DEG C, the material of extrusion is masterbatch through pelletizing, drying, cooling；By masterbatch and step（2）Product mixing add extruder in, squeeze The draw ratio going out machine is 30, and each section of temperature of extruder screw is 40-200 DEG C, and compound fills through high-temperature heating and screw rod rotation Point mix and be extruded, extruded stock is heating, material is plasticized into molten, with the extrusion die of different size under pressurization Extrude corresponding pipe with calibration sleeve, then again through corresponding ripple module and enlarging module cooling and shaping, be then passed through Length measuring device and cutter sweep, tubing, by automatically customized cut-off, finally enters automatic expanding machine, carries out enlarging to tubing head Processing, obtains PE corrugated pipe.

After tested, the tensile yield strength/MPa of the PE corrugated pipe of the present embodiment is more than 30, bending strength/MPa

More than 20, notch impact strength/kJ m^-2（23℃）More than 100.

Claims (3)

1. a kind of strong PE corrugated pipe of crushing resistance is it is characterised in that it is prepared from by the raw material of following weight portion：High density 200 parts of polyethylene, inorganic montmorillonite 8-10 part, 1- butyl -3- methylimidazole hexafluorophosphate 15-20 part, the second of 40-60% Alcohol solution 80-100 part, butanediamine 15-20 part, acrylonitrile 20-25 part, Raney's nickel 1-2 part, α-（Hexichol phosphorus base）Acetic acid 40- 45 parts, borax 8-10 part, dimethyl siloxane mixed methylcyclosiloxane 15-20 part, isoprene rubber 15-20 part, MEHQ 3-5 Part, TMAH 3-4 part, octamethylcy-clotetrasiloxane 15-20 part, polyvinyl chloride 8-10 part, Graphene 6-8 part, Asia Phosphoric acid benzene di-isooctyl 2-3 part.

2. the strong PE corrugated pipe of the crushing resistance according to claim 1 is it is characterised in that it is by following steps preparation Become：

（1）Inorganic montmorillonite and 1- butyl -3- methylimidazole hexafluorophosphate are mixed, adds the ethanol of 40-60% water-soluble Liquid, 70-80 DEG C, mix and blend 4-6h, filters, obtains organo montmorillonite；Organo montmorillonite, butanediamine, acrylonitrile, Raney's nickel are mixed Close uniformly, 80-90 DEG C of mix and blend 8-10h, addition α-（Hexichol phosphorus base）Acetic acid, reduces temperature to 65-75 DEG C, stirring reaction 5- 6h, adds borax, rises high-temperature to 80-90 DEG C, and stirring reaction 8-10h obtains branched phyllosilicate；

（2）Add dimethyl siloxane mixed methylcyclosiloxane to polymerization reaction kettle, vacuum is -0.09MPa, vacuumizes dehydration at 80 DEG C 3-5h；After dehydration terminates, unload vacuum, add isoprene rubber, MEHQ, TMAH, prestox ring four silicon Oxygen alkane, heats up after stirring, and seals ring-opening polymerization 5-8h at 105 DEG C ± 5 DEG C of temperature control；Polymerisation terminates, and is warmed up to 200 DEG C, vacuum -0.1MPa, vacuumize removing low molecular weight volatile and divide 3-4h；

（3）First high density polyethylene (HDPE), polyvinyl chloride, Graphene, branched phyllosilicate, phosphorous acid benzene di-isooctyl are put into height In mixed machine, after the stirring of 30-40min, mixed material is added in extruder, each section of temperature of extruder screw is 150- 220 DEG C, the material of extrusion is masterbatch through pelletizing, drying, cooling；By masterbatch and step（2）Product mixing add extruder in, The draw ratio of extruder is 30, and each section of temperature of extruder screw is 40-200 DEG C, and compound rotates through high-temperature heating and screw rod It is sufficiently mixed and is extruded, extruded stock is heating, material is plasticized into molten, with the head die of different size under pressurization Tool and calibration sleeve extrude corresponding pipe, then again through corresponding ripple module and enlarging module cooling and shaping, Ran Houjing Cross length measuring device and cutter sweep, tubing, by automatically customized cut-off, finally enters automatic expanding machine, tubing head is expanded Mouth processing, obtains PE corrugated pipe.

3. the density of the highdensity polyethylene according to claim 1 and claim 2 is in 0.950～0.985g/ cm³Between.