CN108948493A - Steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material and preparation method thereof - Google Patents
Steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material and preparation method thereof Download PDFInfo
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- CN108948493A CN108948493A CN201810796505.1A CN201810796505A CN108948493A CN 108948493 A CN108948493 A CN 108948493A CN 201810796505 A CN201810796505 A CN 201810796505A CN 108948493 A CN108948493 A CN 108948493A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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Abstract
The present invention provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion materials, it is made of the raw material components of following parts by weight: 80 ~ 100 parts of high density polyethylene (HDPE), 30 ~ 50 parts of polypropylene, 7 ~ 11 parts of linear low density polyethylene, 2 ~ 3 parts of maleic anhydride grafted polyethylene, 4 ~ 7 parts of nanometer calcium carbonate, 2-3 parts of titanate coupling agent, 3 ~ 4 parts of pentaerythritol stearate, 2 ~ 3 parts of antioxidant.The present invention also provides a kind of steel pipe preparation methods of ultralow temperature high density polyethylene (HDPE) anti-corrosion material.The present invention solves the problems, such as that existing high density polyethylene (HDPE) anti-corrosion material is not able to satisfy use and the construction requirement of ultralow temperature, and product obtained has low temperature anti-cracking performance good.
Description
Technical field
The present invention relates to protective materials technical field, especially a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion
Material and preparation method thereof.
Background technique
Extruding polyethylene coating be in an extruder by heating, to continue through polyethylene with flow regime crowded for pressurization
The erosion resistant coating that outlet mold forming covered is formed on pipeline, cladding mode include that longitudinal squeeze out coats and be laterally wrapped around.
With the construction of the pipe-line of China's recent two decades, steel pipe high density polyethylene (HDPE) anti-corrosion material is by portion
GB23257-2009 to be marked, then arrives GB23257-2017, current standard can only also meet the requirement of general geographical environment, for
The construction of the Sino-Russian oil pipeline transportation pipeline in China had been not suitable in recent years.Most northern, Sino Russian boundary such as Tahe, the black river etc. in China
Ground is in frozen soil alternating adverse circumstances all the year round, and annual November, December, in January, 2 months, March, temperature was all spent the subzero 20-50 more,
Weather is exceedingly odious.In engineering construction, because many places are all marshlands, complex geographical environment needs winter construction to build pipeline.So
And high-density polytene pipeline material low temperature notched impact both domestic and external can only meet subzero 20 DEG C of requirement at present.It is remote to meet not
Subzero 30 DEG C it is below using and cryogenic conditions under the requirements constructed.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) preserving timbers
Material and preparation method thereof solves use and construction requirement that existing high density polyethylene (HDPE) anti-corrosion material is not able to satisfy ultralow temperature
Problem.
The technical solution adopted by the present invention to solve the technical problems is:
Present invention firstly provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion materials, by the raw material of following parts by weight
Component is made: 80 ~ 100 parts of high density polyethylene (HDPE), 30 ~ 50 parts of polypropylene, 7 ~ 11 parts of linear low density polyethylene, maleic anhydride connects
2 ~ 3 parts of polyethylene of branch, 4 ~ 7 parts of nanometer calcium carbonate, 2-3 parts of titanate coupling agent, 3 ~ 4 parts of pentaerythritol stearate, antioxidant 2
~ 3 parts.
Preferably, the high density polyethylene (HDPE) is PE100 level high-density polyethylene.
Preferably, the polypropylene is one of PPB4228, PPB4220 or PPB240.
Preferably, the antioxidant is antioxidant 1010.
The present invention also provides a kind of preparation method of above-mentioned steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, packets
Include following steps:
Titanate coupling agent and ethyl alcohol are mixed to form mixed liquor A by step [1], and then nanometer calcium carbonate is added in ethyl alcohol
Mixed liquid B is formed, mixed liquid B is added drop-wise in mixed liquor A under the state that is stirred continuously, mixed liquor A is carried out during dropwise addition
Ultrasonic wave stirring, continues stirring 30 ~ 50 minutes, then puts it into baking oven after being added dropwise, temperature is controlled at 40 DEG C or so,
Constant temperature 3 hours, obtain the modified nanometer calcium carbonate in surface；
Step [2] by high density polyethylene (HDPE), polypropylene, linear low density polyethylene be refined to respectively fineness reach 200 mesh with
On；
Step [3] nanometer that high density polyethylene (HDPE), polypropylene, linear low density polyethylene and the surface after refinement is modified
Calcium carbonate, maleic anhydride grafted polyethylene, pentaerythritol stearate, antioxidant are added in high-speed mixer and are uniformly mixed,
Discharging；
Step [4] by mixture obtained in step [3] be added in double screw extruder through melting, mixing, extrusion, cooling,
Pelletizing, packaging can obtain finished product；Wherein each section of extruder of temperature are as follows: I section 100 DEG C, II section 290 DEG C, III section 260 DEG C, IV section
290 DEG C, V section 260 DEG C, VI section 230 DEG C, VII section 230 DEG C, VIII section 230 DEG C, Ⅸ section 235 DEG C, head temperature is 235 DEG C；Screw rod
Revolving speed is 300 ~ 400 revs/min.
Preferably, the amount of alcohol in step [1] in mixed liquor A and mixed liquid B is the half of titanate coupling agent weight.
The positive effect of the present invention: the present invention carries out that surface is modified adds it in mixture to nanometer calcium carbonate,
Play the role of heterogeneous nucleation in the blend together with high density polyethylene (HDPE), achievees the purpose that crystallization refinement, while nano-sized carbon
Chance of the sour calcium in conjunction with macromolecular chain is more, and the combining unit formed will form cryogenic relaxation in low temperature, in turn
The low-temperature flexibility of product can be effectively improved；Low density polyethylene (LDPE) combination maleic anhydride grafted polyethylene and pentaerythrite stearic acid
The addition of ester can reduce melt viscosity, improve mobility and blend compatibility, improve its processing performance, reduce and answer in product
Power, while the anti-stress cracking performance of product can also be significantly improved, point erosion-resisting characteristics with excellent room temperature or low temperature.This
It is outside, alternate with macromolecule to generate more strong interface interaction due to the biggish specific surface area of nanoparticle and surface energy,
In extruder by the way of high/low temperature circulation, so that the mobility of macromolecular chain repeats enhancing and weakens, it can be better
It controls between macromolecular chain and macromolecular chain and intercrystalline interconnection, to obtain more preferably cryogenic mechanics performance.In short, this hair
The product of bright acquisition has good low temperature resistant cracking performance, the requirement that can satisfy the construction of winter extreme low temperature and use.
Specific embodiment
Below to a preferred embodiment of the present invention will be described in detail.
Embodiment 1
The preferred embodiment of the present invention 1 provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, by following weight
The raw material components of part are made: 80 parts of high density polyethylene (HDPE), 30 parts of polypropylene, and 7 parts of linear low density polyethylene, maleic anhydride grafting
2 parts of polyethylene, 4 parts of nanometer calcium carbonate, 2 parts of titanate coupling agent, 3 parts of pentaerythritol stearate, 2 parts of antioxidant.
Wherein, the high density polyethylene (HDPE) is PE100 level high-density polyethylene；The polypropylene is PPB4228；It is described anti-
Oxygen agent is antioxidant 1010；The titanate coupling agent is titanate coupling agent NDZ-401, Nanjing dawn chemical plant.
Embodiment 2
The preferred embodiment of the present invention 2 provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, by following weight
The raw material components of part are made: 85 parts of high density polyethylene (HDPE), 35 parts of polypropylene, 7.5 parts of linear low density polyethylene, maleic anhydride connects
2.2 parts of polyethylene of branch, 4.6 parts of nanometer calcium carbonate, 2.1 parts of titanate coupling agent, 3.3 parts of pentaerythritol stearate, antioxidant
2.1 part.
Wherein, the high density polyethylene (HDPE) is PE100 level high-density polyethylene；The polypropylene is PPB4220；It is described anti-
Oxygen agent is antioxidant 1010；The titanate coupling agent is titanate coupling agent NDZ-401, Nanjing dawn chemical plant.
Embodiment 3
The preferred embodiment of the present invention 3 provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, by following weight
The raw material components of part are made: 91 parts of high density polyethylene (HDPE), 33 parts of polypropylene, and 9 parts of linear low density polyethylene, maleic anhydride grafting
2.3 parts of polyethylene, 5.4 parts of nanometer calcium carbonate, 2.4 parts of titanate coupling agent, 3.5 parts of pentaerythritol stearate, antioxidant 2.2
Part.
Wherein, the high density polyethylene (HDPE) is PE100 level high-density polyethylene；The polypropylene is PPB240；It is described anti-
Oxygen agent is antioxidant 1010；The titanate coupling agent is titanate coupling agent NDZ-401, Nanjing dawn chemical plant.
Embodiment 4
The preferred embodiment of the present invention 4 provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, by following weight
The raw material components of part are made: 95 parts of high density polyethylene (HDPE), 45 parts of polypropylene, 10 parts of linear low density polyethylene, maleic anhydride connects
2.6 parts of polyethylene of branch, 6.2 parts of nanometer calcium carbonate, 2.7 parts of titanate coupling agent, 3.1 parts of pentaerythritol stearate, antioxidant
2.5 part.
Wherein, the high density polyethylene (HDPE) is PE100 level high-density polyethylene；The polypropylene is PPB4220；It is described anti-
Oxygen agent is antioxidant 1010；The titanate coupling agent is titanate coupling agent NDZ-401, Nanjing dawn chemical plant.
Embodiment 5
The preferred embodiment of the present invention 5 provides a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, by following weight
The raw material components of part are made: 100 parts of high density polyethylene (HDPE), 50 parts of polypropylene, 11 parts of linear low density polyethylene, maleic anhydride connects
3 parts of polyethylene, 7 parts of nanometer calcium carbonate, 3 parts of titanate coupling agent, 4 parts of pentaerythritol stearate, 3 parts of antioxidant of branch.
Wherein, the high density polyethylene (HDPE) is PE100 level high-density polyethylene；The polypropylene is PPB4228；It is described anti-
Oxygen agent is antioxidant 1010；The titanate coupling agent is titanate coupling agent NDZ-401, Nanjing dawn chemical plant.
Embodiment 6
It is anti-that the preferred embodiment of the present invention 6 provides steel pipe ultralow temperature high density polyethylene (HDPE) described in a kind of above-described embodiment 1-5
The preparation method of rotten material, includes the following steps:
Titanate coupling agent and ethyl alcohol are mixed to form mixed liquor A by step [1], and then nanometer calcium carbonate is added in ethyl alcohol
Mixed liquid B is formed, mixed liquid B is added drop-wise in mixed liquor A under the state that is stirred continuously, mixed liquor A is carried out during dropwise addition
Ultrasonic wave stirring, continues stirring 30 ~ 50 minutes, then puts it into baking oven after being added dropwise, temperature is controlled at 40 DEG C or so,
Constant temperature 3 hours, obtain the modified nanometer calcium carbonate in surface；
Step [2] by high density polyethylene (HDPE), polypropylene, linear low density polyethylene be refined to respectively fineness reach 200 mesh with
On；
Step [3] nanometer that high density polyethylene (HDPE), polypropylene, linear low density polyethylene and the surface after refinement is modified
Calcium carbonate, maleic anhydride grafted polyethylene, pentaerythritol stearate, antioxidant are added in high-speed mixer and are uniformly mixed,
Discharging；
Step [4] by mixture obtained in step [3] be added in double screw extruder through melting, mixing, extrusion, cooling,
Pelletizing, packaging can obtain finished product；Wherein each section of extruder of temperature are as follows: I section 100 DEG C, II section 290 DEG C, III section 260 DEG C, IV section
290 DEG C, V section 260 DEG C, VI section 230 DEG C, VII section 230 DEG C, VIII section 230 DEG C, Ⅸ section 235 DEG C, head temperature is 235 DEG C；Screw rod
Revolving speed is 300 ~ 400 revs/min.
Amount of alcohol in step [1] in mixed liquor A and mixed liquid B is the half of titanate coupling agent weight.
The method that the product of embodiment 1-5 as made from the above method passes through high temperature melt Extrusion Coating is coated to just
The external anti-corrosion layer of tubulation, under -50 DEG C of environment, the impact stick through 5kg weight is from 3m eminence free-falling hammer 2 times, without cracking.
Comparative example
This comparative example provides a kind of high density polyethylene (HDPE) anti-corrosion material, including 210 parts of PE100 level high-density polyethylene resins, 120
Part ethylene-acetate ethylene copolymer, 50 parts of dynamic vulcanization ethylene propylene diene rubbers, 50 parts of polypropylene and 40 parts of micas；Wherein, described
The mass percentage of vinyl acetate is 20% in ethylene-acetate ethylene copolymer, ethylene-acetate ethylene copolymer melt matter
The range for measuring flow rate is 2~3g/10min.
The preparation method comprises the following steps: being sequentially added into polypropylene, high density polyethylene (HDPE) and ethylene propylene diene rubber on a mill, it is kneaded
It is added after uniformly and uses the processed mica powder of titanate coupling agent NDZ-401, continued to be kneaded uniformly, be granulated.
The method that product made from this comparative example passes through high temperature melt Extrusion Coating, is coated to the external anti-corrosion layer of rigid tubulation,
Under -50 DEG C of environment, the impact stick through 5kg weight has cracking from 3m eminence free-falling hammer 2 times.
It is above-described to be merely a preferred embodiment of the present invention, it should be understood that the explanation of above embodiments is only used
In facilitating the understanding of the method and its core concept of the invention, it is not intended to limit the scope of protection of the present invention, it is all of the invention
Any modification for being made within thought and principle, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material, which is characterized in that by the raw material of following parts by weight
Component is made: 80 ~ 100 parts of high density polyethylene (HDPE), 30 ~ 50 parts of polypropylene, 7 ~ 11 parts of linear low density polyethylene, maleic anhydride connects
2 ~ 3 parts of polyethylene of branch, 4 ~ 7 parts of nanometer calcium carbonate, 2-3 parts of titanate coupling agent, 3 ~ 4 parts of pentaerythritol stearate, antioxidant 2
~ 3 parts.
2. a kind of steel pipe according to claim 1 ultralow temperature high density polyethylene (HDPE) anti-corrosion material, it is characterised in that:
The high density polyethylene (HDPE) is PE100 level high-density polyethylene.
3. a kind of steel pipe according to claim 1 ultralow temperature high density polyethylene (HDPE) anti-corrosion material, it is characterised in that:
The polypropylene is one of PPB4228, PPB4220 or PPB240.
4. a kind of steel pipe according to claim 1 ultralow temperature high density polyethylene (HDPE) anti-corrosion material, it is characterised in that:
The antioxidant is antioxidant 1010.
5. a kind of preparation method of ultralow temperature high density polyethylene (HDPE) anti-corrosion material of steel pipe described in claim 1, feature
It is, includes the following steps:
Titanate coupling agent and ethyl alcohol are mixed to form mixed liquor A by step [1], and then nanometer calcium carbonate is added in ethyl alcohol
Mixed liquid B is formed, mixed liquid B is added drop-wise in mixed liquor A under the state that is stirred continuously, mixed liquor A is carried out during dropwise addition
Ultrasonic wave stirring, continues stirring 30 ~ 50 minutes, then puts it into baking oven after being added dropwise, temperature is controlled at 40 DEG C or so,
Constant temperature 3 hours, obtain the modified nanometer calcium carbonate in surface；
Step [2] by high density polyethylene (HDPE), polypropylene, linear low density polyethylene be refined to respectively fineness reach 200 mesh with
On；
Step [3] nanometer that high density polyethylene (HDPE), polypropylene, linear low density polyethylene and the surface after refinement is modified
Calcium carbonate, maleic anhydride grafted polyethylene, pentaerythritol stearate, antioxidant are added in high-speed mixer and are uniformly mixed,
Discharging；
Step [4] by mixture obtained in step [3] be added in double screw extruder through melting, mixing, extrusion, cooling,
Pelletizing, packaging can obtain finished product；Wherein each section of extruder of temperature are as follows: I section 100 DEG C, II section 290 DEG C, III section 260 DEG C, IV section
290 DEG C, V section 260 DEG C, VI section 230 DEG C, VII section 230 DEG C, VIII section 230 DEG C, Ⅸ section 235 DEG C, head temperature is 235 DEG C；Screw rod
Revolving speed is 300 ~ 400 revs/min.
6. a kind of preparation method of steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material according to claim 5,
It is characterized by: the amount of alcohol in step [1] in mixed liquor A and mixed liquid B is the half of titanate coupling agent weight.
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| CN201810796505.1A CN108948493B (en) | 2018-07-19 | 2018-07-19 | Ultralow-temperature high-density polyethylene anticorrosive material for steel pipeline and preparation method thereof |
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| CN201810796505.1A CN108948493B (en) | 2018-07-19 | 2018-07-19 | Ultralow-temperature high-density polyethylene anticorrosive material for steel pipeline and preparation method thereof |
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Cited By (2)
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|---|---|---|---|---|
| CN110305392A (en) * | 2019-07-23 | 2019-10-08 | 武汉唯康管业有限公司 | A kind of high-density polytene pipeline and its preparation process |
| CN115368782A (en) * | 2022-09-27 | 2022-11-22 | 肖建江 | Preparation method of corrosion-resistant hydrophobic anticorrosive material |
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| CN115368782A (en) * | 2022-09-27 | 2022-11-22 | 肖建江 | Preparation method of corrosion-resistant hydrophobic anticorrosive material |
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| Publication number | Publication date |
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| CN108948493B (en) | 2021-04-13 |
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