CN105385008A - Preparation method of chemical corrosion resistant PE pipe - Google Patents
Preparation method of chemical corrosion resistant PE pipe Download PDFInfo
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- CN105385008A CN105385008A CN201510904161.8A CN201510904161A CN105385008A CN 105385008 A CN105385008 A CN 105385008A CN 201510904161 A CN201510904161 A CN 201510904161A CN 105385008 A CN105385008 A CN 105385008A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a preparation method of a chemical corrosion resistant PE pipe. The preparation method comprises the following steps: adding part of raw materials into a high speed stirring machine, stirring the raw materials in a high speed, cooling the mixture to a room temperature to obtain a mixture (A); then adding residual raw materials into the high speed stirring machine, stirring the raw materials in a high speed, cooling the mixture to a room temperature to obtain a mixture (B); adding the mixture (A) and mixture (B) into the high speed stirring machine, stirring the mixture in a high speed until the temperature of the mixture reaches 120 DEG C; then delivering the mixture to a cooling mixer, blending and cooling the mixture, discharging the mixture when the temperature of the mixture reaches a room temperature; delivering the mixture to a double screw extruder, extruding the mixture, and moulding to obtain PE pipes. The obtained PE pipe has an excellent performance on resisting chemical corrosion, also has the advantages of good impact resistant property, low friction coefficient, sunshine resistance, stable size, and aging-resistant performance, is durable, and can be used to deliver corrosive mediums. Moreover, the preparation cost is low, and the preparation method can be applied to industrial production.
Description
Technical field
The invention belongs to polymeric material field, be specifically related to a kind of preparation method of PE tubing of resistance to chemical attack.
Background technology
Along with the develop rapidly of modern industry, the use properties for product it is also proposed higher requirement, and such as, in large-scale steel mill, aluminium manufacturer, power plant, chemical plant, the conveying of liquid towards or gaseous state Chemicals, mainly adopts Cemented filling, convenient and swift.And transport pipe mainly metallic conduit in the past, especially steel alloy pipeline, has a wide range of applications at numerous areas.The anticorrosion antiwear problem of metal has become the difficulty of its development of restriction.Materials science worker has adopted various technology to increase the work-ing life of metallic substance, and many people adopt top coat, surface treatment, even employing and Ceramic Composite, but its effect is still unsatisfactory so far.Coating can make matrix and corrosive medium isolate, play the effect stoping or delay to corrode, but lingering section solvent in coating, the industrial raw material of meeting pollution transportation, paint film cross-linking density is larger, the general character shortcomings such as ubiquity fragility is large, poor impact resistance, especially, under high impact effect, easily there is phenomenons such as ftractureing, come off in paint film, is carrying out easily occurring in coating procedure that viscosity increases in addition, the problems such as speed of response is slow, and set time is long; And adopt the ceramic such as pottery, glass to carry out substituted metal, but comparatively large, between pottery and metal the bad adhesion of its fragility is also be difficult to make its sexual development that makes a breakthrough.Separately have and adopt glass reinforced plastic to carry out substituted metal, but its temperature tolerance is low and ageing resistance is poor, is also difficult to make its complete substituted metal material.And macromolecular material pipe is compared with conventional metals pipeline, have from heavy and light, corrosion-resistant, compressive strength is high, hygienic safety, flow resistance are little, save energy, saving metal, better people's living environment, long service life, the feature such as easy for installation, receive the favor of pipework circle and occupy considerable position, forming a kind of irresistible development trend.
PE is because having the features such as intensity is high, high temperature resistant, anticorrosive, nontoxic, wear-resisting, and the tubing that is widely used manufactures field, is traditional iron and steel tubing, the regeneration product of polyvinyl chloride pipe.PE tubing resistance to chemical corrosion is in the market poor, raw rotten, galvanic corrosion phenomenon easily occurs under acid, alkali, wet goods corrosive medium, greatly reduces the work-ing life of PE pipe, limit its range of application.Therefore, be badly in need of a kind of resistance to chemical attack PE tubing of exploitation, resistance to deterioration is good simultaneously, and sun-resistant light exposes to the sun, to meet market demands.
Summary of the invention
The object of this invention is to provide a kind of preparation method of PE tubing of resistance to chemical attack.
Technical scheme of the present invention is: a kind of preparation method of PE tubing of resistance to chemical attack, and this method comprises the following steps:
(1) by mass parts, modified PE 50-52 part, paracril 8-16 part, potter's clay 15-20 part, coupling agent 5-7 part, tallow fatty acid 2-4 part, thermo-stabilizer 4-6 part, silicon boride 2-4 part are together dropped in homogenizer, 2400-2600rpm high-speed stirring to material temperature stops stirring when reaching 95 DEG C, be cooled to room temperature, obtain compound A; (2) by mass parts, by penton 18-24 part, petroleum coke powder 10-15 part, initiator 1-3 part, hexa-methylene-1, the two thiosulfuric acid disodium 2-4 part of 6-, lubricant 4-6 part are together dropped in homogenizer, 3000-3200rpm high-speed stirring to material temperature stops stirring when reaching 85 DEG C, be cooled to room temperature, obtain compound B; (3) compound A obtained above and compound B is together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 120 DEG C; Then transport material in cold mixer and stir cooling, treat that temperature of charge is down to room temperature, discharging; (4) deliver in twin screw extruder by the compound that step (3) obtains, under 195-200 DEG C of processing temperature, tubing is made in extrusion moulding.
Described modified PE following methods obtains: by mass parts, get in PE50-60 part, two (beta-amino butenoic acid) the ester 10-14 part of thio-diethylene glycol, sodium silicoaluminate 3-6 part, tri-thiol n-butyl acetate antimony 4-7 part, liquid acrylonitrile butadiene rubber 15-20 part input kneader and mediate, treat that material frictional heat is to 100-110 DEG C, material is entered in cold mixer and lowers the temperature, the discharging when temperature drops to below 50 DEG C, to obtain final product.
Described coupling agent adopts γ-aminopropyltrimethoxysilane or γ-aminopropyl triethoxysilane.
Described initiator is ammonium persulphate.
Described lubricant is the mixture of stearic acid and paraffin, and the mass ratio of stearic acid and paraffin is 2.4:1.
Described thermo-stabilizer is the mixture of lead sulfate tribasic and dibasic lead phosphite, and the mass ratio of lead sulfate tribasic and dibasic lead phosphite is 3:1.2.
beneficial effect:
The PE tubing resistance to chemical corrosion that the present invention obtains is excellent, there is good impact resistance simultaneously, low, the sun-resistant light of frictional coefficient expose to the sun, good stability of the dimension, the advantage such as ageing-resistant, durable in use, be suitable for the conveying of corrosive medium, preparation cost is lower, is applicable to suitability for industrialized production.
embodiment:
embodiment 1
A preparation method for the PE tubing of resistance to chemical attack, this method comprises the following steps:
(1) by mass parts, modified PE 50 parts, paracril 8 parts, 15 parts, potter's clay, coupling agent 5 parts, tallow fatty acid 2 parts, thermo-stabilizer 4 parts, silicon boride 2 parts are together dropped in homogenizer, 2400-2600rpm high-speed stirring to material temperature stops stirring when reaching 95 DEG C, be cooled to room temperature, obtain compound A; (2) by mass parts, by penton 18 parts, petroleum coke powder 10 parts, initiator 1 part, hexa-methylene-1, the two thiosulfuric acid disodium 2 parts of 6-, lubricant 4 parts together drop in homogenizer, 3000-3200rpm high-speed stirring to material temperature stops stirring when reaching 85 DEG C, be cooled to room temperature, obtain compound B; (3) compound A obtained above and compound B is together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 120 DEG C; Then transport material in cold mixer and stir cooling, treat that temperature of charge is down to room temperature, discharging; (4) deliver in twin screw extruder by the compound that step (3) obtains, under 195-200 DEG C of processing temperature, tubing is made in extrusion moulding.
Described modified PE following methods obtains: by mass parts, get in PE60 part, two (beta-amino butenoic acid) ester 14 parts of thio-diethylene glycol, sodium silicoaluminate 6 parts, 7 parts, tri-thiol n-butyl acetate antimony, liquid acrylonitrile butadiene rubber 20 parts of input kneaders and mediate, treat that material frictional heat is to 100-110 DEG C, material is entered in cold mixer and lowers the temperature, the discharging when temperature drops to below 50 DEG C, to obtain final product.
Described coupling agent adopts γ-aminopropyltrimethoxysilane.Described initiator is ammonium persulphate.Described lubricant is the mixture of stearic acid and paraffin, and the mass ratio of stearic acid and paraffin is 2.4:1.Described thermo-stabilizer is the mixture of lead sulfate tribasic and dibasic lead phosphite, and the mass ratio of lead sulfate tribasic and dibasic lead phosphite is 3:1.2.
embodiment 2
A preparation method for the PE tubing of resistance to chemical attack, this method comprises the following steps:
(1) by mass parts, modified PE 52 parts, paracril 16 parts, 20 parts, potter's clay, coupling agent 7 parts, tallow fatty acid 4 parts, thermo-stabilizer 6 parts, silicon boride 4 parts are together dropped in homogenizer, 2400-2600rpm high-speed stirring to material temperature stops stirring when reaching 95 DEG C, be cooled to room temperature, obtain compound A; (2) by mass parts, by penton 24 parts, petroleum coke powder 15 parts, initiator 3 parts, hexa-methylene-1, the two thiosulfuric acid disodium 4 parts of 6-, lubricant 6 parts together drop in homogenizer, 3000-3200rpm high-speed stirring to material temperature stops stirring when reaching 85 DEG C, be cooled to room temperature, obtain compound B; (3) compound A obtained above and compound B is together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 120 DEG C; Then transport material in cold mixer and stir cooling, treat that temperature of charge is down to room temperature, discharging; (4) deliver in twin screw extruder by the compound that step (3) obtains, under 195-200 DEG C of processing temperature, tubing is made in extrusion moulding.
Described modified PE following methods obtains: by mass parts, get in PE60 part, two (beta-amino butenoic acid) ester 14 parts of thio-diethylene glycol, sodium silicoaluminate 6 parts, 7 parts, tri-thiol n-butyl acetate antimony, liquid acrylonitrile butadiene rubber 20 parts of input kneaders and mediate, treat that material frictional heat is to 100-110 DEG C, material is entered in cold mixer and lowers the temperature, the discharging when temperature drops to below 50 DEG C, to obtain final product.
Described coupling agent adopts γ-aminopropyltrimethoxysilane.Described initiator is ammonium persulphate.Described lubricant is the mixture of stearic acid and paraffin, and the mass ratio of stearic acid and paraffin is 2.4:1.Described thermo-stabilizer is the mixture of lead sulfate tribasic and dibasic lead phosphite, and the mass ratio of lead sulfate tribasic and dibasic lead phosphite is 3:1.2.
embodiment 3
A preparation method for the PE tubing of resistance to chemical attack, this method comprises the following steps:
(1) by mass parts, modified PE 51 parts, paracril 12 parts, 17 parts, potter's clay, coupling agent 6 parts, tallow fatty acid 3 parts, thermo-stabilizer 5 parts, silicon boride 3 parts are together dropped in homogenizer, 2400-2600rpm high-speed stirring to material temperature stops stirring when reaching 95 DEG C, be cooled to room temperature, obtain compound A; (2) by mass parts, by penton 21 parts, petroleum coke powder 13 parts, initiator 2 parts, hexa-methylene-1, the two thiosulfuric acid disodium 3 parts of 6-, lubricant 5 parts together drop in homogenizer, 3000-3200rpm high-speed stirring to material temperature stops stirring when reaching 85 DEG C, be cooled to room temperature, obtain compound B; (3) compound A obtained above and compound B is together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 120 DEG C; Then transport material in cold mixer and stir cooling, treat that temperature of charge is down to room temperature, discharging; (4) deliver in twin screw extruder by the compound that step (3) obtains, under 195-200 DEG C of processing temperature, tubing is made in extrusion moulding.
Described modified PE following methods obtains: by mass parts, get in PE55 part, two (beta-amino butenoic acid) ester 12 parts of thio-diethylene glycol, sodium silicoaluminate 5 parts, 5 parts, tri-thiol n-butyl acetate antimony, liquid acrylonitrile butadiene rubber 17 parts of input kneaders and mediate, treat that material frictional heat is to 100-110 DEG C, material is entered in cold mixer and lowers the temperature, the discharging when temperature drops to below 50 DEG C, to obtain final product.
Described coupling agent adopts γ-aminopropyl triethoxysilane.Described initiator is ammonium persulphate.Described lubricant is the mixture of stearic acid and paraffin, and the mass ratio of stearic acid and paraffin is 2.4:1.Described thermo-stabilizer is the mixture of lead sulfate tribasic and dibasic lead phosphite, and the mass ratio of lead sulfate tribasic and dibasic lead phosphite is 3:1.2.
The pipe performance that above-described embodiment 1-3 obtains detects as shown in the table:
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength (MPa) | 95 | 93 | 96 |
| Yield strength (MPa) | 78 | 76 | 75 |
| Modulus in tension (MPa) | 4124 | 4156 | 4174 |
| Bending elastic modulus (GPa) | 3.3 | 3.4 | 3.3 |
| Longitudinal welds (%) | 1.6 | 1.7 | 1.6 |
| Aging coefficient (70 DEG C, 144h) | 0.78 | 0.77 | 0.76 |
| Acid resistance test (10% hydrochloric acid, 60 DEG C, 48h) | Corrosion-free phenomenon | Corrosion-free phenomenon | Corrosion-free phenomenon |
| Alkali resistance test (40% sodium hydroxide, 60 DEG C, 48h) | Corrosion-free phenomenon | Corrosion-free phenomenon | Corrosion-free phenomenon |
| Salt tolerance (50% sodium-chlor, 60 DEG C, 48h) | Corrosion-free phenomenon | Corrosion-free phenomenon | Corrosion-free phenomenon |
Claims (6)
1. a preparation method for the PE tubing of resistance to chemical attack, is characterized in that this method comprises the following steps:
(1) by mass parts, modified PE 50-52 part, paracril 8-16 part, potter's clay 15-20 part, coupling agent 5-7 part, tallow fatty acid 2-4 part, thermo-stabilizer 4-6 part, silicon boride 2-4 part are together dropped in homogenizer, 2400-2600rpm high-speed stirring to material temperature stops stirring when reaching 95 DEG C, be cooled to room temperature, obtain compound A; (2) by mass parts, by penton 18-24 part, petroleum coke powder 10-15 part, initiator 1-3 part, hexa-methylene-1, the two thiosulfuric acid disodium 2-4 part of 6-, lubricant 4-6 part are together dropped in homogenizer, 3000-3200rpm high-speed stirring to material temperature stops stirring when reaching 85 DEG C, be cooled to room temperature, obtain compound B; (3) compound A obtained above and compound B is together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 120 DEG C; Then transport material in cold mixer and stir cooling, treat that temperature of charge is down to room temperature, discharging; (4) deliver in twin screw extruder by the compound that step (3) obtains, under 195-200 DEG C of processing temperature, tubing is made in extrusion moulding.
2. the preparation method of the PE tubing of resistance to chemical attack according to claim 1, it is characterized in that: described modified PE following methods obtains: by mass parts, get in PE50-60 part, two (beta-amino butenoic acid) the ester 10-14 part of thio-diethylene glycol, sodium silicoaluminate 3-6 part, tri-thiol n-butyl acetate antimony 4-7 part, liquid acrylonitrile butadiene rubber 15-20 part input kneader and mediate, treat that material frictional heat is to 100-110 DEG C, material is entered in cold mixer and lowers the temperature, the discharging when temperature drops to below 50 DEG C, to obtain final product.
3. the preparation method of the PE tubing of resistance to chemical attack according to claim 1, is characterized in that: described coupling agent adopts γ-aminopropyltrimethoxysilane or γ-aminopropyl triethoxysilane.
4. the preparation method of the PE tubing of resistance to chemical attack according to claim 1, is characterized in that: described initiator is ammonium persulphate.
5. the preparation method of the PE tubing of resistance to chemical attack according to claim 1, is characterized in that: described lubricant is the mixture of stearic acid and paraffin, and the mass ratio of stearic acid and paraffin is 2.4:1.
6. the preparation method of the PE tubing of resistance to chemical attack according to claim 1, is characterized in that: described thermo-stabilizer is the mixture of lead sulfate tribasic and dibasic lead phosphite, and the mass ratio of lead sulfate tribasic and dibasic lead phosphite is 3:1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510904161.8A CN105385008A (en) | 2015-12-09 | 2015-12-09 | Preparation method of chemical corrosion resistant PE pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510904161.8A CN105385008A (en) | 2015-12-09 | 2015-12-09 | Preparation method of chemical corrosion resistant PE pipe |
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| Publication Number | Publication Date |
|---|---|
| CN105385008A true CN105385008A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510904161.8A Pending CN105385008A (en) | 2015-12-09 | 2015-12-09 | Preparation method of chemical corrosion resistant PE pipe |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554600A (en) * | 2013-10-30 | 2014-02-05 | 安徽国通高新管业股份有限公司 | Negative pressure corrugated pipe mixture |
| CN104098820A (en) * | 2014-06-18 | 2014-10-15 | 安徽省振云塑胶有限公司 | Anti-corrosion PE water supply pipe and preparation method thereof |
| CN104130472A (en) * | 2014-06-26 | 2014-11-05 | 合肥和安机械制造有限公司 | Filler specialized for tear-resistant and low temperature-resistant high-pressure rubber hose, and preparation method thereof |
-
2015
- 2015-12-09 CN CN201510904161.8A patent/CN105385008A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554600A (en) * | 2013-10-30 | 2014-02-05 | 安徽国通高新管业股份有限公司 | Negative pressure corrugated pipe mixture |
| CN104098820A (en) * | 2014-06-18 | 2014-10-15 | 安徽省振云塑胶有限公司 | Anti-corrosion PE water supply pipe and preparation method thereof |
| CN104130472A (en) * | 2014-06-26 | 2014-11-05 | 合肥和安机械制造有限公司 | Filler specialized for tear-resistant and low temperature-resistant high-pressure rubber hose, and preparation method thereof |
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Application publication date: 20160309 |