CN104725717A - Internal-pressure-resistant polypropylene pipe and preparation method thereof - Google Patents
Internal-pressure-resistant polypropylene pipe and preparation method thereof Download PDFInfo
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- CN104725717A CN104725717A CN201410698237.1A CN201410698237A CN104725717A CN 104725717 A CN104725717 A CN 104725717A CN 201410698237 A CN201410698237 A CN 201410698237A CN 104725717 A CN104725717 A CN 104725717A
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
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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
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an internal-pressure-resistant polypropylene pipe which sequentially comprises a pipeline inner layer, a reinforcement layer and a pipeline outer layer. The pipeline inner layer comprises the following raw materials in parts by weight: 70-90 parts of polypropylene, 10-20 parts of carbon fiber, 6-15 parts of carbon black, 2-10 parts of compatilizer and 1-10 parts of nucleating agent. The reinforcement layer comprises the following raw materials in parts by weight: 60-80 parts of polypropylene, 10-25 parts of long glass fiber, 3-12 parts of compatilizer and 1-10 parts of antioxidant. The pipeline outer layer comprises the following raw materials in parts by weight: 70-90 parts of polypropylene, 10-20 parts of short glass fiber, 5-10 parts of toughener, 2-10 parts of compatilizer and 1-10 parts of antioxidant. The composite multilayer polypropylene pipe has the advantages of excellent strength, excellent toughness, excellent corrosion resistance and excellent antistatic property.
Description
Technical field
The present invention relates to a kind of polypropylene tube of internal pressure-resistant, belong to polymer pipe material field.
Background technology
Polypropylene (PP) material of polymers type has lower heat-drawn wire (100 DEG C), low transparency, low-luster, low rigidity, but has stronger resistance to impact shock, and the shock strength of PP increases along with the increase of ethylene content.The vicat softening temperature of PP is 150 DEG C.Because degree of crystallinity is higher, surface rigidity and the anti-scratch characteristic of this material are fine.
Polypropylene pipe is widely used in numerous industries such as pharmacy, chemical industry, oil, chlor-alkali, pharmacy, environmental protection, light industry, printing and dyeing, food, metallurgy and water treatment, but existing polypropylene pipe, poor corrosion resistance, physicals are low, antistatic property is also poor.So the maintenance cost of equipment is high, consumption of natural resource, be difficult to ensure quality product, the production cost of product is high.
Summary of the invention
The object of the invention is to the defect for prior art, provide a kind of strength and toughness all good, and corrosion-resistant, the polypropylene pipe of antistatic property excellence.
The present invention is achieved by the following technical solutions:
A polypropylene pipe for internal pressure-resistant, comprises pipeline lining, enhancement layer and pipeline outer-layer successively;
Described pipeline lining comprises the feed composition of following weight part: polypropylene 70-90 part; Carbon fiber 10-20 part; Carbon black 6-15 part; Compatilizer 2-10 part; Nucleator 1-10 part;
Described enhancement layer comprises the feed composition of following weight part: polypropylene 60-80 part; Long glass fibres 10-25 part; Compatilizer 3-12 part; Oxidation inhibitor 1-10 part;
Described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 70-90 part; Short glass fiber 10-20 part; Toughner 5-10 part; Compatilizer 2-10 part; Oxidation inhibitor 1-10 part;
Preferred further, described pipeline lining comprises the feed composition of following weight part: polypropylene 73 parts, 11 parts, carbon fiber, carbon black 8 parts, compatilizer 5 parts, nucleator 3 parts;
Preferred further, described enhancement layer comprises the feed composition of following weight part: polypropylene 74 parts; Long glass fibres 16 parts; Compatilizer 6 parts; 4 parts, oxidation inhibitor.
Preferred further, described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 81 parts; Short glass fiber 11 parts; Toughner 8 parts; Compatilizer 3 parts; 1 part, oxidation inhibitor.
Preferably, the carbon fiber of described pipeline lining is chopped carbon fiber, and length is 12-25mm.
Preferably, the compatilizer of described pipeline lining is maleic anhydride graft compatilizer, and density is 0.67 ~ 0.86g/cm
3, percentage of grafting is 0.6-2.5%.
Preferably, described nucleator is alpha-crystal form nucleator, as polyvinyl eyclohexane.
Preferably, described long glass fibres is silica fiber, and length is 1-2m.
Preferably, the compatilizer of described enhancement layer is maleic anhydride graft compatilizer, and density is 0.7 ~ 0.93g/cm
3, percentage of grafting is 0.5-3%.
Preferably, the oxidation inhibitor of described enhancement layer is three [2,4-di-tert-butyl-phenyl] phosphorous acid ester.
Preferably, described short glass fiber is silica fiber, and length is 10-15mm.
Preferably, described toughner is ethylene octene segmented copolymer, and its molecular weight is 50000-80000, and melting index is 0.5-3.0g/10min.
Preferably, the compatilizer of described pipeline outer-layer is maleic anhydride grafted ethene octene segmented copolymer, and density is 0.865-0.875g/cm
3, percentage of grafting is 0.8-1.5%.
Preferably, the oxidation inhibitor of described pipeline outer-layer is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
The preparation method of the polypropylene tube of a kind of internal pressure-resistant that the present invention openly provides further, comprises the following steps:
(1) according to pipeline lining proportioning raw materials, polypropylene, carbon fiber, carbon black, compatilizer and nucleator are added high-speed mixer, homogeneous heating mixes, and compound sends into extruding pelletization in twin screw extruder, is drying to obtain the interior layered material of pipeline;
(2) according to enhancement layer proportioning raw materials, polypropylene, compatilizer and oxidation inhibitor are added in single screw extrusion machine and melt extrudes, long glass fibres is placed in the upper end of the die orifice of forcing machine simultaneously, lower end from die orifice after long glass fibres thorough impregnation melt-mixed material pulls out, and namely obtains the enhancing layered material of pipeline after the cooling of long glass fibres Surface melt;
(3) according to pipeline outer-layer proportioning raw materials, polypropylene, short glass fiber, toughner, compatilizer and oxidation inhibitor are added high-speed mixer, homogeneous heating mixes, and compound sends into extruding pelletization in twin screw extruder, is drying to obtain the outer layered material of pipeline;
(4) with reinforced composite pipe production line, above-mentioned interior layered material is extruded into interior pipe, then at the enhancing layered material of the above-mentioned preparation of interior tube-surface uniform winding, finally the outer layered material of above-mentioned preparation is extruded into outer tube, be i.e. the polypropylene pipe of obtained described a kind of internal pressure-resistant.
Preferably, in step (1), the mixing temperature in described high-speed mixer is 80-100 DEG C; The extrusion temperature of described twin screw extruder is 180-200 DEG C, and extruder screw rotating speed is 300-350rpm.
Preferably, in step (2), the temperature that melt extrudes of described single screw extrusion machine is 180-200 DEG C, and extruder screw rotating speed is 100-120rpm.
Preferably, in step (3), the mixing temperature in described high-speed mixer is 80-100 DEG C; The extrusion temperature of described twin screw extruder is 180-200 DEG C, and extruder screw rotating speed is 300-350rpm.
Technique effect of the present invention and advantage are:
Outer field High-impact Polypropylene can effectively prevent outside atmosphere from impacting; Enhancement layer can improve the voltage withstand class of pipe integral; Internal layer antistatic polypropylene material can be effectively antistatic, and have corrosion resistance.The three-layer polypropylene pipe of such combination, over-all properties is very excellent.
Accompanying drawing explanation
The polypropylene pipe cross sectional representation of internal pressure-resistant prepared by Fig. 1 embodiment 1-4
Embodiment
Below by way of specific specific examples, technical scheme of the present invention is described.Should be understood that one or more method stepss that the present invention mentions do not repel and before and after described combination step, also to there is additive method step or can also insert additive method step between these steps clearly mentioned; Should also be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.And, except as otherwise noted, the numbering of various method steps is only the convenient tool differentiating various method steps, but not be ordering or the enforceable scope of restriction the present invention of restriction various method steps, the change of its relativeness or adjustment, when changing technology contents without essence, when being also considered as the enforceable category of the present invention.
The invention provides a kind of polypropylene tube of internal pressure-resistant, comprise pipeline lining, enhancement layer and pipeline outer-layer successively; Described pipeline lining comprises the feed composition of following weight part: polypropylene 70-90 part; Carbon fiber 10-20 part; Carbon black 6-15 part; Compatilizer 2-10 part; Nucleator 1-10 part; Described enhancement layer comprises the feed composition of following weight part: polypropylene 60-80 part; Long glass fibres 10-25 part; Compatilizer 3-12 part; Oxidation inhibitor 1-10 part; Described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 70-90 part; Short glass fiber 10-20 part; Toughner 5-10 part; Compatilizer 2-10 part; Oxidation inhibitor 1-10 part.
As preferred performance, described pipeline lining comprises the feed composition of following weight part: polypropylene 73 parts, 11 parts, carbon fiber, carbon black 8 parts, compatilizer 5 parts, nucleator 3 parts;
As preferred performance, described enhancement layer comprises the feed composition of following weight part: polypropylene 74 parts; Long glass fibres 16 parts; Compatilizer 6 parts; 4 parts, oxidation inhibitor;
As preferred performance, described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 81 parts; Short glass fiber 11 parts; Toughner 8 parts; Compatilizer 3 parts; 1 part, oxidation inhibitor.
As preferred performance, the carbon fiber of described pipeline lining is chopped carbon fiber, and length is 12-25mm; The compatilizer of described pipeline lining is maleic anhydride graft compatilizer, and density is 0.67 ~ 0.86g/cm3, and percentage of grafting is 0.6-2.5%; Described nucleator is alpha-crystal form nucleator, as polyvinyl eyclohexane;
As preferred performance, the long glass fibres of described enhancement layer is silica fiber, and length is 1-2m; The compatilizer of described enhancement layer is maleic anhydride graft compatilizer, and density is 0.7 ~ 0.93g/cm
3, percentage of grafting is 0.5-3%; The oxidation inhibitor of described enhancement layer is three [2,4-di-tert-butyl-phenyl] phosphorous acid ester;
As preferred performance, the short glass fiber of described pipeline outer-layer is silica fiber, and length is 10-15mm; Toughner is ethylene octene segmented copolymer, and its molecular weight is 50000-80000, and melting index is 0.5-3.0g/10min; The compatilizer of pipeline outer-layer is maleic anhydride grafted ethene octene segmented copolymer, and density is 0.865-0.875g/cm
3, percentage of grafting is 0.8-1.5%; The oxidation inhibitor of described pipeline outer-layer is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
The preparation process of the polypropylene tube of described internal pressure-resistant is:
(1) according to pipeline lining proportioning raw materials, by polypropylene, carbon fiber, carbon black, compatilizer, nucleator adds high-speed mixer, heating mixing at 80-100 DEG C, mixed compound to send in twin screw extruder extruding pelletization under 180-200 DEG C of temperature condition, and extruder screw rotating speed is 300-350rpm, the dry interior layered material that just can obtain pipeline;
(2) according to enhancement layer proportioning raw materials, polypropylene, compatilizer, oxidation inhibitor are added in single screw extrusion machine and melt extrudes under 180-200 DEG C of temperature condition, long glass fibres is placed in the upper end of the die orifice of forcing machine simultaneously, lower end from die orifice after long glass fibres thorough impregnation melt-mixed material pulls out, extruder screw rotating speed is 100-120rpm, just can obtain the enhancement layer material of pipeline after the cooling of long glass fibres Surface melt;
(3) according to pipeline outer-layer proportioning raw materials, polypropylene, short glass fiber, toughner, compatilizer and oxidation inhibitor are added high-speed mixer, heating mixing at 80-100 DEG C, mixed compound to send in twin screw extruder extruding pelletization under 180-200 DEG C of temperature condition, extruder screw rotating speed is 300-350rpm, the dry outer layered material that just can obtain pipeline.
(4) with reinforced composite pipe production line, above-mentioned interior layered material is extruded into interior pipe, again at the enhancement layer material of the above-mentioned preparation of interior tube-surface uniform winding, finally the outer layered material of above-mentioned preparation is extruded into outer tube, i.e. the polypropylene tube of obtained described internal pressure-resistant, as shown in Figure 1.
Below in conjunction with specific embodiment, specific description is done to the present invention:
In order to advantage of the present invention being described, internally manage respectively, enhancement layer and outer tube list 4 embodiments and be described, the mass component of these 4 embodiments is as shown in table 1:
Table 1 embodiment 1-4 pipeline lining is prepared burden
In table 1: carbon fiber is chopped carbon fiber (12-25mm); Compatilizer is maleic anhydride graft compatilizer, and density is 0.67 ~ 0.86g/cm3, and percentage of grafting is 0.6-2.5%; Nucleator is polyvinyl eyclohexane.
Table 2 embodiment 1-4 enhancement layer is prepared burden
In table 2: long glass fibres is silica fiber (1-2m); Compatilizer is that (density is 0.7 ~ 0.93g/cm to maleic anhydride graft compatilizer
3, percentage of grafting is 0.5-3%); Oxidation inhibitor is three [2,4-di-tert-butyl-phenyl] phosphorous acid ester.
Table 3 embodiment 1-4 pipeline outer-layer is prepared burden
In table 3: short glass fiber is silica fiber (10-15mm); Toughner is ethylene octene segmented copolymer (molecular weight is 50000-80000, and melting index is 0.5-3.0g/10min); Compatilizer is that (density is 0.865-0.875g/cm to maleic anhydride grafted ethene octene segmented copolymer
3, percentage of grafting is 0.8-1.5%); Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
To the polypropylene pipe that embodiment 1-4 makes, carry out performance test, the result drawn is as table 4:
Polypropylene pipe the performance test results prepared by table 4 embodiment 1-4
As can be seen from Table 4, the mechanical property of 4 embodiments of the present invention is all fine, and the less explanation antistatic effect of resistivity is better, and tensile strength, flexural strength value larger explanation stretch capability are stronger, and the higher explanation toughness of shock strength is better.
Anti-internal pressure capability of the present invention is all higher level, and numerical value is larger, and the limit internal pressure born is higher.
The thermal stability of heat-drawn wire side light pipe, be worth larger, stability is higher.
More than show and describe ultimate principle of the present invention; principal character and advantage, the technician of the industry should understand, and above-described embodiment does not limit the present invention in any form; all employings are equal to replacement or the technical scheme that obtains of equivalent transformation mode, all drop in protection scope of the present invention.
Claims (16)
1. a polypropylene pipe for internal pressure-resistant, comprises pipeline lining, enhancement layer and pipeline outer-layer successively;
Described pipeline lining comprises the feed composition of following weight part: polypropylene 70-90 part; Carbon fiber 10-20 part; Carbon black 6-15 part; Compatilizer 2-10 part; Nucleator 1-10 part;
Described enhancement layer comprises the feed composition of following weight part: polypropylene 60-80 part; Long glass fibres 10-25 part; Compatilizer 3-12 part; Oxidation inhibitor 1-10 part;
Described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 70-90 part; Short glass fiber 10-20 part; Toughner 5-10 part; Compatilizer 2-10 part; Oxidation inhibitor 1-10 part.
2. the polypropylene pipe of a kind of internal pressure-resistant as claimed in claim 1, is characterized in that, described pipeline lining comprises the feed composition of following weight part: polypropylene 73 parts, 11 parts, carbon fiber, carbon black 8 parts, compatilizer 5 parts, nucleator 3 parts.
3. the polypropylene pipe of a kind of internal pressure-resistant as claimed in claim 1, is characterized in that, described enhancement layer comprises the feed composition of following weight part: polypropylene 74 parts; Long glass fibres 16 parts; Compatilizer 6 parts; 4 parts, oxidation inhibitor.
4. the polypropylene pipe of a kind of internal pressure-resistant as claimed in claim 1, is characterized in that, described pipeline outer-layer comprises the feed composition of following weight part: polypropylene 81 parts; Short glass fiber 11 parts; Toughner 8 parts; Compatilizer 3 parts; 1 part, oxidation inhibitor.
5. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, the carbon fiber of described pipeline lining is chopped carbon fiber, and length is 12-25mm.
6. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, the compatilizer of described pipeline lining is maleic anhydride graft compatilizer, and density is 0.67 ~ 0.86g/cm
3, percentage of grafting is 0.6-2.5%.
7. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, described nucleator is polyvinyl eyclohexane.
8. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, described long glass fibres is silica fiber, and length is 1-2m.
9. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, the compatilizer of described enhancement layer is maleic anhydride graft compatilizer, and density is 0.7 ~ 0.93g/cm
3, percentage of grafting is 0.5-3%.
10. the polypropylene pipe of a kind of internal pressure-resistant as described in as arbitrary in claim 1-4, it is characterized in that, the oxidation inhibitor of described enhancement layer is three [2,4-di-tert-butyl-phenyl] phosphorous acid ester.
11. as arbitrary in claim 1-4 as described in a kind of polypropylene pipe of internal pressure-resistant, it is characterized in that, described short glass fiber is silica fiber, and length is 10-15mm.
12. as arbitrary in claim 1-4 as described in a kind of polypropylene pipe of internal pressure-resistant, it is characterized in that, described toughner is ethylene octene segmented copolymer, and its molecular weight is 50000-80000, and melting index is 0.5-3.0g/10min.
13. as arbitrary in claim 1-4 as described in a kind of polypropylene pipe of internal pressure-resistant, it is characterized in that, the compatilizer of described pipeline outer-layer is maleic anhydride grafted ethene octene segmented copolymer, and density is 0.865-0.875g/cm
3, percentage of grafting is 0.8-1.5%.
14. as arbitrary in claim 1-4 as described in a kind of polypropylene pipe of internal pressure-resistant, it is characterized in that, the oxidation inhibitor of described pipeline outer-layer is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
15. as arbitrary in claim 1-4 as described in a kind of preparation method of polypropylene pipe of internal pressure-resistant, comprise the following steps:
(1) according to pipeline lining proportioning raw materials, polypropylene, carbon fiber, carbon black, compatilizer and nucleator are added the mixing of high-speed mixer homogeneous heating, compound sends into extruding pelletization in twin screw extruder, is drying to obtain the interior layered material of pipeline;
(2) according to enhancement layer proportioning raw materials, polypropylene, compatilizer and oxidation inhibitor are added in single screw extrusion machine and melt extrudes, long glass fibres is placed in the upper end of the die orifice of forcing machine simultaneously, lower end from die orifice after long glass fibres thorough impregnation melt-mixed material pulls out, and namely obtains the enhancement layer material of pipeline after the cooling of long glass fibres Surface melt;
(3) according to pipeline outer-layer proportioning raw materials, polypropylene, short glass fiber, toughner, compatilizer and oxidation inhibitor are added high-speed mixer, homogeneous heating mixes, and compound sends into extruding pelletization in twin screw extruder, is drying to obtain the outer layered material of pipeline;
(4) with reinforced composite pipe production line, above-mentioned interior layered material is extruded into interior pipe, again at the enhancement layer material of the above-mentioned preparation of interior tube-surface uniform winding, finally the outer layered material of above-mentioned preparation is extruded into outer tube, i.e. the polypropylene pipe of obtained described a kind of internal pressure-resistant.
The preparation method of the polypropylene pipe of 16. a kind of internal pressure-resistants as claimed in claim 15, is characterized in that, also comprises any one or multinomial in following characteristics:
A, in () step (1), the mixing temperature in described high-speed mixer is 80-100 DEG C; The extrusion temperature of described twin screw extruder is 180-200 DEG C, and extruder screw rotating speed is 300-350rpm;
B, in () step (2), the temperature that melt extrudes of described single screw extrusion machine is 180-200 DEG C, and extruder screw rotating speed is 100-120rpm;
C, in () step (3), the mixing temperature in described high-speed mixer is 80-100 DEG C; The extrusion temperature of described twin screw extruder is 180-200 DEG C, and extruder screw rotating speed is 300-350rpm.
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| CN201410698237.1A CN104725717A (en) | 2014-11-27 | 2014-11-27 | Internal-pressure-resistant polypropylene pipe and preparation method thereof |
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| CN201410698237.1A CN104725717A (en) | 2014-11-27 | 2014-11-27 | Internal-pressure-resistant polypropylene pipe and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106519449A (en) * | 2016-11-23 | 2017-03-22 | 江苏金波新材料科技有限公司 | Composite polypropylene alloy tube and production method thereof |
| CN106589603A (en) * | 2016-12-16 | 2017-04-26 | 天津惠博普管道技术有限公司 | High-temperature-resistant polypropylene pipe material and preparation method thereof |
| CN107883076A (en) * | 2017-12-18 | 2018-04-06 | 上海伟星新型建材有限公司 | A kind of high withstand voltage and high-impact PPR pipe |
| CN106594402B (en) * | 2016-12-06 | 2019-05-24 | 王南南 | A kind of corrosion-resistant composite pipe fittings of carbon fiber-containing |
| CN110131484A (en) * | 2019-05-10 | 2019-08-16 | 吴克成 | A kind of high temperature resistant, sterilization water supply line of low-temperature resistance and preparation method thereof |
| CN110185851A (en) * | 2019-04-02 | 2019-08-30 | 浙江中财管道科技股份有限公司 | A kind of high voltage, composite polypropylene of highly corrosion resistant and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106519449A (en) * | 2016-11-23 | 2017-03-22 | 江苏金波新材料科技有限公司 | Composite polypropylene alloy tube and production method thereof |
| CN106594402B (en) * | 2016-12-06 | 2019-05-24 | 王南南 | A kind of corrosion-resistant composite pipe fittings of carbon fiber-containing |
| CN106589603A (en) * | 2016-12-16 | 2017-04-26 | 天津惠博普管道技术有限公司 | High-temperature-resistant polypropylene pipe material and preparation method thereof |
| CN108082765B (en) * | 2017-12-05 | 2023-05-19 | 安徽伊士达耐腐设备股份有限公司 | Wall structure of chemical container and production method thereof |
| CN107883076A (en) * | 2017-12-18 | 2018-04-06 | 上海伟星新型建材有限公司 | A kind of high withstand voltage and high-impact PPR pipe |
| CN110185851A (en) * | 2019-04-02 | 2019-08-30 | 浙江中财管道科技股份有限公司 | A kind of high voltage, composite polypropylene of highly corrosion resistant and preparation method thereof |
| CN110131484A (en) * | 2019-05-10 | 2019-08-16 | 吴克成 | A kind of high temperature resistant, sterilization water supply line of low-temperature resistance and preparation method thereof |
| CN111004451A (en) * | 2019-12-27 | 2020-04-14 | 上海邦中新材料有限公司 | High-strength high-heat-resistance polypropylene glass fiber reinforced belt and preparation method thereof |
| CN111040282A (en) * | 2019-12-27 | 2020-04-21 | 上海邦中高分子材料股份有限公司 | High-strength high-heat-resistance polyethylene glass fiber reinforced belt and preparation method thereof |
| CN112531601A (en) * | 2020-12-22 | 2021-03-19 | 南京特塑复合材料有限公司 | Composite material cable conduit |
| CN113789021A (en) * | 2021-09-22 | 2021-12-14 | 青岛六水管道有限公司 | Reinforced flame-retardant mute peptized drainage pipeline |
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