CN111019215A - Ultra-durable PE pipeline and preparation method thereof - Google Patents
Ultra-durable PE pipeline and preparation method thereof Download PDFInfo
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- 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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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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
- C08L2207/04—Thermoplastic elastomer
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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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Abstract
The invention discloses an ultra-durable PE pipeline and a preparation method thereof, wherein the ultra-durable PE pipeline comprises the following components in percentage by mass: 75-80 parts of high-density polyethylene, 10-15 parts of first composite antioxidant, 8-12 parts of second composite antioxidant, 5-8 parts of silane coupling agent, 2-5 parts of anti-aging agent, 1-3 parts of sodium diethyldithiocarbamate, 1-3 parts of nano titanium dioxide, 0.5-1 part of nano zinc oxide, 2-4 parts of ethylene-vinyl alcohol copolymer, 12-14 parts of modifier and 8-10 parts of filler; according to the invention, the first compound antioxidant and the second compound antioxidant are added in a manner of adding special additives, so that the antioxidant property of the PE pipeline is effectively improved, the service life of the PE pipeline is obviously prolonged, the pressure reduction effect of the low PE pipeline is reduced, and the PE pipeline has obvious benefits especially for the PE pipeline used on the ground surface.
Description
Technical Field
The invention relates to the technical field of PE pipeline production, in particular to an ultra-durable PE pipeline and a preparation method thereof.
Background
With the rapid development of plastic pipelines, the plastic pipeline industry mainly comprising polyvinyl chloride pipes, polyethylene pipes and polypropylene pipes has gradually developed, wherein the PE polyethylene pipe is thermoplastic resin with higher crystallinity and non-polarity, and compared with the PVC pipe, the PE polyethylene pipe has the characteristics of impact resistance, non-toxicity, low temperature, chemical resistance and the like and is widely applied to the fields of building water supply and drainage, heating, gas transmission, farmland irrigation and the like;
at present, the effective service life of a PE pipeline is 30 years on average, the key reason is caused by oxidation resistance induction time in the production process, national standards require that the detection of the oxidation induction time of the PE pipeline is more than or equal to 20 minutes (more than or equal to 30 minutes in new national standards), the theoretical service life of the PE pipeline under the standard is more than or equal to 50 years, but the service life of the PE pipeline is influenced by different specific environmental factors, the service life of the PE pipeline is influenced badly, for example, the oxidation resistance of the PE pipeline is greatly shortened by some factors such as extrusion and stretching caused by geological change, underground sewage erosion, high temperature and ultraviolet lamps, and the oxidation resistance directly influences the pressure reduction coefficient. The reduction factor required for a 50 year life PE pipeline is as follows: the pressure reduction coefficient is 1.0 under the condition of 20 ℃; the pressure reduction coefficient is 0.87 under the condition of 30 ℃; the pressure reduction coefficient is 0.74 at 40 ℃, the key factor of the actual service life of the pipeline is determined by whether the oxidation resistance of the PE pipeline can be obviously improved, the production cycle is prolonged by increasing the oxidation resistance induction time, the production efficiency is reduced, and the generated economic benefit is reduced. Therefore, the invention provides an ultra-durable PE pipeline and a preparation method thereof, and aims to overcome the defects in the prior art.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an ultra-durable PE pipe and a method for manufacturing the same, in which a first compound antioxidant and a second compound antioxidant are added in a manner of adding a special additive, so as to effectively increase the antioxidant performance of the PE pipe, thereby significantly prolonging the service life of the PE pipe, reducing the pressure reduction effect of a low PE pipe, and particularly providing significant benefits for a PE pipe used on the ground surface.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme:
an ultra-durable PE pipeline comprises the following components in percentage by mass: 75-80 parts of high-density polyethylene, 10-15 parts of first composite antioxidant, 8-12 parts of second composite antioxidant, 5-8 parts of silane coupling agent, 2-5 parts of anti-aging agent, 1-3 parts of sodium diethyldithiocarbamate, 1-3 parts of nano titanium dioxide, 0.5-1 part of nano zinc oxide, 2-4 parts of ethylene-vinyl alcohol copolymer, 12-14 parts of modifier and 8-10 parts of filler.
The further improvement lies in that: comprises the following components in percentage by mass: 78 parts of high-density polyethylene, 13 parts of first composite antioxidant, 10 parts of second composite antioxidant, 6 parts of silane coupling agent, 4 parts of anti-aging agent, 2 parts of sodium diethyldithiocarbamate, 2 parts of nano titanium dioxide, 0.8 part of nano zinc oxide, 3 parts of ethylene-vinyl alcohol copolymer, 13 parts of modifier and 9 parts of filler.
The further improvement lies in that: the modifier is prepared by mixing fluororesin, organic silicon resin, thermoplastic polyurethane elastomer rubber, butylene terephthalate, epoxy resin and glycidyl methacrylate according to the proportion of 1:3:1:0.8:0.5: 0.2.
The further improvement lies in that: the first composite antioxidant is formed by mixing a BHT-containing tetrahydrofuran antioxidant, a phosphite antioxidant and a hindered phenol antioxidant in a weight ratio of 1.3:1: 0.3.
The further improvement lies in that: the second composite antioxidant is formed by mixing bisphenol A and triphenyl triphosphate according to the proportion of 5: 3.
The further improvement lies in that: the filler is formed by mixing polypropylene fibers and nano silicon oxide according to the proportion of 2: 1.
A preparation method of an ultra-durable PE pipeline comprises the following steps:
the method comprises the following steps: adding thermoplastic polyurethane elastomer rubber in a modifier into a stirring kettle, heating to 160-180 ℃, stirring for 10-15 minutes, adding fluororesin, organic silicon resin, butylene terephthalate, epoxy resin and glycidyl methacrylate into the stirring kettle, and continuously stirring for 30 minutes for later use;
step two: adding high-density polyethylene, a first composite antioxidant, a second composite antioxidant, a silane coupling agent, an anti-aging agent and a filler into a reaction kettle, and mixing and stirring for 40-60 minutes;
step three: adding the materials in the stirring kettle into the reaction kettle, continuously mixing and stirring the materials with the existing materials in the reaction kettle for 20 minutes, adding sodium diethyldithiocarbamate, nano titanium dioxide, nano zinc oxide and ethylene-vinyl alcohol copolymer into the reaction kettle, and stirring for 30-40 minutes to obtain a base material;
step four: extruding and granulating the base material by using a screw extruder to obtain master batches, drying the master batches, and finally performing injection molding by using an injection molding machine to obtain the ultra-durable PE pipeline.
The further improvement lies in that: the second step comprises the following specific operations: adding high-density polyethylene into a reaction kettle in a nitrogen atmosphere, controlling the temperature in the reaction kettle to be 150-.
The further improvement lies in that: the reaction temperature in the reaction kettle in the third step is 135-145 ℃, and the reaction is also completed in the nitrogen atmosphere.
The further improvement lies in that: in the fourth step, the drying temperature is 90-100 ℃, and the pressure intensity is controlled to be 95-105Mpa when the injection molding machine performs injection molding.
The invention has the beneficial effects that: according to the invention, the first compound antioxidant and the second compound antioxidant are added in a manner of adding special additives, so that the antioxidant property of the PE pipeline is effectively improved, the service life of the PE pipeline is obviously prolonged, the pressure reduction effect of a low PE pipeline is reduced, the PE pipeline especially used on the ground surface is obviously beneficial, the super-durable PE pipeline has longer service life and more stable performance, the maintenance cost and risk can be reduced, and the PE pipeline also has the effects of corrosion resistance and ultraviolet resistance, and has better stability.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
An ultra-durable PE pipeline comprises the following components in percentage by mass: 75 parts of high-density polyethylene, 10 parts of first composite antioxidant, 8 parts of second composite antioxidant, 5 parts of silane coupling agent, 2 parts of anti-aging agent, 1 part of sodium diethyldithiocarbamate, 1 part of nano titanium dioxide, 0.5 part of nano zinc oxide, 2 parts of ethylene-vinyl alcohol copolymer, 12 parts of modifier and 8 parts of filler.
The modifier is prepared by mixing fluororesin, organic silicon resin, thermoplastic polyurethane elastomer rubber, butylene terephthalate, epoxy resin and glycidyl methacrylate according to the proportion of 1:3:1:0.8:0.5: 0.2.
The first composite antioxidant is formed by mixing a BHT-containing tetrahydrofuran antioxidant, a phosphite antioxidant and a hindered phenol antioxidant in a weight ratio of 1.3:1: 0.3.
The second composite antioxidant is formed by mixing bisphenol A and triphenyl triphosphate according to the proportion of 5: 3.
The filler is formed by mixing polypropylene fibers and nano silicon oxide according to the proportion of 2: 1.
Example two
An ultra-durable PE pipeline comprises the following components in percentage by mass: 78 parts of high-density polyethylene, 13 parts of first composite antioxidant, 10 parts of second composite antioxidant, 6 parts of silane coupling agent, 4 parts of anti-aging agent, 2 parts of sodium diethyldithiocarbamate, 2 parts of nano titanium dioxide, 0.8 part of nano zinc oxide, 3 parts of ethylene-vinyl alcohol copolymer, 13 parts of modifier and 9 parts of filler.
The modifier is prepared by mixing fluororesin, organic silicon resin, thermoplastic polyurethane elastomer rubber, butylene terephthalate, epoxy resin and glycidyl methacrylate according to the proportion of 1:3:1:0.8:0.5: 0.2.
The first composite antioxidant is formed by mixing a BHT-containing tetrahydrofuran antioxidant, a phosphite antioxidant and a hindered phenol antioxidant in a weight ratio of 1.3:1: 0.3.
The second composite antioxidant is formed by mixing bisphenol A and triphenyl triphosphate according to the proportion of 5: 3.
The filler is formed by mixing polypropylene fibers and nano silicon oxide according to the proportion of 2: 1.
EXAMPLE III
An ultra-durable PE pipeline comprises the following components in percentage by mass: 80 parts of high-density polyethylene, 15 parts of first composite antioxidant, 12 parts of second composite antioxidant, 8 parts of silane coupling agent, 5 parts of anti-aging agent, 3 parts of sodium diethyldithiocarbamate, 3 parts of nano titanium dioxide, 1 part of nano zinc oxide, 4 parts of ethylene-vinyl alcohol copolymer, 14 parts of modifier and 10 parts of filler.
The modifier is prepared by mixing fluororesin, organic silicon resin, thermoplastic polyurethane elastomer rubber, butylene terephthalate, epoxy resin and glycidyl methacrylate according to the proportion of 1:3:1:0.8:0.5: 0.2.
The first composite antioxidant is formed by mixing a BHT-containing tetrahydrofuran antioxidant, a phosphite antioxidant and a hindered phenol antioxidant in a weight ratio of 1.3:1: 0.3.
The second composite antioxidant is formed by mixing bisphenol A and triphenyl triphosphate according to the proportion of 5: 3.
The filler is formed by mixing polypropylene fibers and nano silicon oxide according to the proportion of 2: 1.
Example four
A preparation method of an ultra-durable PE pipeline comprises the following steps:
the method comprises the following steps: adding thermoplastic polyurethane elastomer rubber in a modifier into a stirring kettle, heating to 170 ℃, stirring for 13 minutes, adding fluororesin, organic silicon resin, butylene terephthalate, epoxy resin and glycidyl methacrylate into the stirring kettle, and continuously stirring for 30 minutes for later use;
step two: adding high-density polyethylene into a reaction kettle in a nitrogen atmosphere, controlling the temperature in the reaction kettle to be 155 ℃, adding a silane coupling agent, an anti-aging agent and a filler into the reaction kettle, mixing and stirring for 30 minutes, adjusting the temperature to be 115 ℃, adding a first composite antioxidant and a second composite antioxidant into the reaction kettle, mixing and stirring for 20 minutes;
step three: adding the materials in the stirring kettle into a reaction kettle, continuously mixing and stirring the materials with the existing materials in the reaction kettle for 20 minutes, adding sodium diethyldithiocarbamate, nano titanium dioxide, nano zinc oxide and ethylene-vinyl alcohol copolymer into the reaction kettle, stirring for 35 minutes, wherein the reaction temperature in the reaction kettle is 140 ℃, and the reaction is also completed in a nitrogen atmosphere to obtain a base material;
step four: extruding and granulating the base material by using a screw extruder to obtain master batches, drying the master batches at the temperature of 95 ℃, and finally performing injection molding by using an injection molding machine to form the super-durable PE pipeline, wherein the pressure is controlled to be 100Mpa during injection molding by using the injection molding machine.
According to the first embodiment, the second embodiment and the third embodiment, the invention comprises the following components in percentage by mass: 75-80 parts of high-density polyethylene, 10-15 parts of first composite antioxidant, 8-12 parts of second composite antioxidant, 5-8 parts of silane coupling agent, 2-5 parts of anti-aging agent, 1-3 parts of sodium diethyldithiocarbamate, 1-3 parts of nano titanium dioxide, 0.5-1 part of nano zinc oxide, 2-4 parts of ethylene-vinyl alcohol copolymer, 12-14 parts of modifier and 8-10 parts of filler.
According to the invention, the first compound antioxidant and the second compound antioxidant are added in a manner of adding special additives, so that the antioxidant property of the PE pipeline is effectively improved, the service life of the PE pipeline is obviously prolonged, the pressure reduction effect of a low PE pipeline is reduced, the PE pipeline especially used on the ground surface is obviously beneficial, the super-durable PE pipeline has longer service life and more stable performance, the maintenance cost and risk can be reduced, and the PE pipeline also has the effects of corrosion resistance and ultraviolet resistance, and has better stability.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An ultra-durable PE pipe, characterized in that: comprises the following components in percentage by mass: 75-80 parts of high-density polyethylene, 10-15 parts of first composite antioxidant, 8-12 parts of second composite antioxidant, 5-8 parts of silane coupling agent, 2-5 parts of anti-aging agent, 1-3 parts of sodium diethyldithiocarbamate, 1-3 parts of nano titanium dioxide, 0.5-1 part of nano zinc oxide, 2-4 parts of ethylene-vinyl alcohol copolymer, 12-14 parts of modifier and 8-10 parts of filler.
2. The ultra-durable PE pipe of claim 1, wherein: comprises the following components in percentage by mass: 78 parts of high-density polyethylene, 13 parts of first composite antioxidant, 10 parts of second composite antioxidant, 6 parts of silane coupling agent, 4 parts of anti-aging agent, 2 parts of sodium diethyldithiocarbamate, 2 parts of nano titanium dioxide, 0.8 part of nano zinc oxide, 3 parts of ethylene-vinyl alcohol copolymer, 13 parts of modifier and 9 parts of filler.
3. The ultra-durable PE pipe of claim 1, wherein: the modifier is prepared by mixing fluororesin, organic silicon resin, thermoplastic polyurethane elastomer rubber, butylene terephthalate, epoxy resin and glycidyl methacrylate according to the proportion of 1:3:1:0.8:0.5: 0.2.
4. The ultra-durable PE pipe of claim 1, wherein: the first composite antioxidant is formed by mixing a BHT-containing tetrahydrofuran antioxidant, a phosphite antioxidant and a hindered phenol antioxidant in a weight ratio of 1.3:1: 0.3.
5. The ultra-durable PE pipe of claim 1, wherein: the second composite antioxidant is formed by mixing bisphenol A and triphenyl triphosphate according to the proportion of 5: 3.
6. The ultra-durable PE pipe of claim 1, wherein: the filler is formed by mixing polypropylene fibers and nano silicon oxide according to the proportion of 2: 1.
7. A preparation method of an ultra-durable PE pipeline is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding thermoplastic polyurethane elastomer rubber in a modifier into a stirring kettle, heating to 160-180 ℃, stirring for 10-15 minutes, adding fluororesin, organic silicon resin, butylene terephthalate, epoxy resin and glycidyl methacrylate into the stirring kettle, and continuously stirring for 30 minutes for later use;
step two: adding high-density polyethylene, a first composite antioxidant, a second composite antioxidant, a silane coupling agent, an anti-aging agent and a filler into a reaction kettle, and mixing and stirring for 40-60 minutes;
step three: adding the materials in the stirring kettle into the reaction kettle, continuously mixing and stirring the materials with the existing materials in the reaction kettle for 20 minutes, adding sodium diethyldithiocarbamate, nano titanium dioxide, nano zinc oxide and ethylene-vinyl alcohol copolymer into the reaction kettle, and stirring for 30-40 minutes to obtain a base material;
step four: extruding and granulating the base material by using a screw extruder to obtain master batches, drying the master batches, and finally performing injection molding by using an injection molding machine to obtain the ultra-durable PE pipeline.
8. The method of claim 7, wherein the method comprises the steps of: the second step comprises the following specific operations: adding high-density polyethylene into a reaction kettle in a nitrogen atmosphere, controlling the temperature in the reaction kettle to be 150-.
9. The method of claim 7, wherein the method comprises the steps of: the reaction temperature in the reaction kettle in the third step is 135-145 ℃, and the reaction is also completed in the nitrogen atmosphere.
10. The method of claim 7, wherein the method comprises the steps of:
in the fourth step, the drying temperature is 90-100 ℃, and the pressure intensity is controlled to be 95-105Mpa when the injection molding machine performs injection molding.
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| CN115433402A (en) * | 2022-09-22 | 2022-12-06 | 安徽国升塑业科技有限公司 | Enhanced HDPE double-wall corrugated pipe and preparation method thereof |
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Application publication date: 20200417 |