CN105037909A - Heat-resistant universal type PE-RT( polyethylene of raised temperature resistance) tube and preparation method therefor - Google Patents
Heat-resistant universal type PE-RT( polyethylene of raised temperature resistance) tube and preparation method therefor Download PDFInfo
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- CN105037909A CN105037909A CN201510394939.5A CN201510394939A CN105037909A CN 105037909 A CN105037909 A CN 105037909A CN 201510394939 A CN201510394939 A CN 201510394939A CN 105037909 A CN105037909 A CN 105037909A
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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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76006—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7604—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- 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
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Abstract
The invention discloses a heat-resistant universal type PE-RT (polyethylene of raised temperature resistance) tube and a preparation method therefor. The heat-resistant universal type PE-RT tube is characterized by being prepared from the following raw materials in parts by weight: 92-98 parts of PE-RT, 0.5-1.5 parts of an antioxidant, 1-5 parts of nano high-thermal-conductivity compound powder and 0.5-1.5 parts of processing auxiliaries. According to the heat-resistant universal type PE-RT tube, thermal conductivity of a tubular product is improved by virtue of the added nano high-thermal-conductivity compound powder, so that the service life of tubular product system equipment is prolonged, and thermal-conduction heat exchange efficiency of the tubular product is improved. The composition adopted by the heat-resistant universal type PE-RT tube has excellent long-term heat resistance, oxidization resistance and high-temperature creep resistance.
Description
Technical field
The present invention relates to polyvinyl piping materials field, be specifically related to a kind of heat-resisting universal PE-RT pipe and preparation method thereof.
Background technology
The floor heating tube, heat exchanger, cold and hot water conveying etc. of current China are widely used is atactic copolymerized polypropene (PPR), polybutene (PB), chlorinated polyvinyl chloride (PVC-C) and crosslinked polyethylene (PEX) plastic pipe developing rapidly along with plastic pipe industry, novel PE-RT tubing relies on the features such as the physicals of its excellence, erosion resistance, snappiness, processibility and construction and installation, becomes the brand-new polyvinyl piping materials materials occurred in middle and high warm water transportation art.PE-RT pipe is a kind of noncrosslinking polyvinyl resin that may be used for hot-water line.PE-RT pipe is specially cold and hot water supply tubing and a kind of ethene of designing and octene, hexene or butylene copolymer.And PE-RT tubing urgent need solution at present is its resistance toheat and antioxidant property.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of heat-resisting universal PE-RT pipe composition and method of making the same, has larger lifting with the tubing thermal oxidation resistance performance that this heat-proof polythene composition obtains for raw material, can meet the requirement that application is actual further.
In order to solve the problem, the present invention by the following technical solutions: a kind of heat-resisting universal PE-RT pipe, be made up of the raw material of following portions by weight:
Described heat-proof polythene (PE-RT) is ethene and octene copolymer, and density is 0.926 ~ 0.950g/cm
3, melt flow rate (MFR) 190 DEG C, counterweight weight be 2.16Kg time, be 0.1 ~ 2g/10min.
Described oxidation inhibitor is Hinered phenols antioxidant and phosphite ester kind antioxidant, and the weight ratio of Hinered phenols antioxidant and phosphite ester kind antioxidant is 1:0.2 ~ 1:9.
Described nanometer height heat conduction composite powder is formed by multiple super-high heat-conductive filler combination, and described super-high heat-conductive filler comprises nano-silicon nitride magnesium, nanometer silicon carbide, nano aluminum nitride and nm-class boron nitride.
Described processing aid is fluoroelastomer, addition preferably 0.6 ~ 0.9 part.
The preparation method of heat-resisting universal PE-RT pipe is as follows:
(1) add in high speed mixer by oxidation inhibitor, nanometer height heat conduction composite powder, processing aid, under 70 ~ 80 DEG C of conditions, high-speed stirring 40 ~ 50min, releases material, is added in twin screw extruder hopper, carries out extruding pelletization; Processing condition are: heating medial temperature 190 ~ 195 DEG C, driving screw rotating speed 1150 ~ 1200r/min, feed screw rotating speed 1250 ~ 1300r/min, bake out temperature 95 ~ 100 DEG C, stock cutter rotating speed 1300 ~ 1500r/min;
(2) mixed with heat-proof polythene (PE-RT) by the master batch that (1) is obtained, be added in injection moulding machine elevating hopper, first cold mixed in high mixer, then heat is mixed, molding, granulating on molding, granulating machine; Be added in injection moulding machine elevating hopper, injection moulding obtains tubing; Processing condition are: heating medial temperature 210 ~ 240 DEG C, injection pressure 7.5 ~ 8MPa, injection cycle 25 ~ 30min.
Implement technical scheme of the present invention, there is following beneficial effect: the nanometer height heat conduction composite powder that the present invention adds, improves the heat conductivility of tubing, thus extend the work-ing life of piping systems equipment, also improve the heat conduction heat exchange efficiency of tubing.Composition of the present invention has excellent heat-resisting for a long time, oxidation resistent susceptibility and high temperature resistant creep property.
Embodiment
Embodiment 1
A heat-resisting universal PE-RT pipe, the parts by weight of each component are: heat-proof polythene (PE-RT) 92 parts, 1.5 parts, oxidation inhibitor, nanometer height heat conduction composite powder 5 parts, processing aid 1.5 parts.
First add in high speed mixer by oxidation inhibitor, nanometer height heat conduction composite powder, processing aid during preparation, under 70 ~ 80 DEG C of conditions, high-speed stirring 40 ~ 50min, releases material, is added in twin screw extruder hopper, carries out extruding pelletization; Processing condition are: heating medial temperature 190 ~ 195 DEG C, driving screw rotating speed 1150 ~ 1200r/min, feed screw rotating speed 1250 ~ 1300r/min, bake out temperature 95 ~ 100 DEG C, stock cutter rotating speed 1300 ~ 1500r/min;
Mixed with heat-proof polythene (PE-RT) by above-mentioned obtained master batch, be added in injection moulding machine elevating hopper, first cold mixed in high mixer, then heat is mixed, molding, granulating on molding, granulating machine; Be added in injection moulding machine elevating hopper, injection moulding obtains tubing; Processing condition are: heating medial temperature 210 ~ 240 DEG C, injection pressure 7.5 ~ 8MPa, injection cycle 25 ~ 30min.
Embodiment 2
A heat-resisting universal PE-RT pipe, the parts by weight of each component are: heat-proof polythene (PE-RT) 98 parts, 0.5 part, oxidation inhibitor, nanometer height heat conduction composite powder 1 part, processing aid 0.5 part.
First add in high speed mixer by oxidation inhibitor, nanometer height heat conduction composite powder, processing aid during preparation, under 70 ~ 80 DEG C of conditions, high-speed stirring 40 ~ 50min, releases material, is added in twin screw extruder hopper, carries out extruding pelletization; Processing condition are: heating medial temperature 190 ~ 195 DEG C, driving screw rotating speed 1150 ~ 1200r/min, feed screw rotating speed 1250 ~ 1300r/min, bake out temperature 95 ~ 100 DEG C, stock cutter rotating speed 1300 ~ 1500r/min;
Mixed with heat-proof polythene (PE-RT) by above-mentioned obtained master batch, be added in injection moulding machine elevating hopper, first cold mixed in high mixer, then heat is mixed, molding, granulating on molding, granulating machine; Be added in injection moulding machine elevating hopper, injection moulding obtains tubing; Processing condition are: heating medial temperature 210 ~ 240 DEG C, injection pressure 7.5 ~ 8MPa, injection cycle 25 ~ 30min.
Embodiment 3
A heat-resisting universal PE-RT pipe, the parts by weight of each component are: heat-proof polythene (PE-RT) 95 parts, 1 part, oxidation inhibitor, nanometer height heat conduction composite powder 3 parts, processing aid 1 part.
First add in high speed mixer by oxidation inhibitor, nanometer height heat conduction composite powder, processing aid during preparation, under 70 ~ 80 DEG C of conditions, high-speed stirring 40 ~ 50min, releases material, is added in twin screw extruder hopper, carries out extruding pelletization; Processing condition are: heating medial temperature 190 ~ 195 DEG C, driving screw rotating speed 1150 ~ 1200r/min, feed screw rotating speed 1250 ~ 1300r/min, bake out temperature 95 ~ 100 DEG C, stock cutter rotating speed 1300 ~ 1500r/min;
Mixed with heat-proof polythene (PE-RT) by above-mentioned obtained master batch, be added in injection moulding machine elevating hopper, first cold mixed in high mixer, then heat is mixed, molding, granulating on molding, granulating machine; Be added in injection moulding machine elevating hopper, injection moulding obtains tubing; Processing condition are: heating medial temperature 210 ~ 240 DEG C, injection pressure 7.5 ~ 8MPa, injection cycle 25 ~ 30min.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, any people being familiar with this technology is in the technical scope disclosed by the present invention; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a heat-resisting universal PE-RT pipe, is characterized in that: be made up of the raw material of following portions by weight:
2. heat-resisting universal PE-RT pipe according to claim 1, is characterized in that: described heat-proof polythene (PE-RT) is ethene and octene copolymer, and density is 0.926 ~ 0.950g/cm
3, melt flow rate (MFR) 190 DEG C, counterweight weight be 2.16Kg time, be 0.1 ~ 2g/10min.
3. heat-resisting universal PE-RT pipe according to claim 1, it is characterized in that: described oxidation inhibitor is Hinered phenols antioxidant and phosphite ester kind antioxidant, the weight ratio of Hinered phenols antioxidant and phosphite ester kind antioxidant is 1:0.2 ~ 1:9.
4. heat-resisting universal PE-RT pipe according to claim 1, it is characterized in that: described nanometer height heat conduction composite powder is formed by multiple super-high heat-conductive filler combination, and described super-high heat-conductive filler comprises nano-silicon nitride magnesium, nanometer silicon carbide, nano aluminum nitride and nm-class boron nitride.
5. heat-resisting universal PE-RT pipe according to claim 1, is characterized in that: described processing aid is fluoroelastomer.
6. the heat-resisting universal PE-RT tube preparation method of one according to claim 1, it is characterized in that comprising the steps: that oxidation inhibitor, nanometer height heat conduction composite powder, processing aid add in high speed mixer by (1), under 70 ~ 80 DEG C of conditions, high-speed stirring 40 ~ 50min, material is released, be added in twin screw extruder hopper, carry out extruding pelletization; Processing condition are: heating medial temperature 190 ~ 195 DEG C, driving screw rotating speed 1150 ~ 1200r/min, feed screw rotating speed 1250 ~ 1300r/min, bake out temperature 95 ~ 100 DEG C, stock cutter rotating speed 1300 ~ 1500r/min;
(2) mixed with heat-proof polythene (PE-RT) by the master batch that (1) is obtained, be added in injection moulding machine elevating hopper, first cold mixed in high mixer, then heat is mixed, molding, granulating on molding, granulating machine; Be added in injection moulding machine elevating hopper, injection moulding obtains tubing; Processing condition are: heating medial temperature 210 ~ 240 DEG C, injection pressure 7.5 ~ 8MPa, injection cycle 25 ~ 30min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510394939.5A CN105037909A (en) | 2015-07-07 | 2015-07-07 | Heat-resistant universal type PE-RT( polyethylene of raised temperature resistance) tube and preparation method therefor |
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| CN201510394939.5A CN105037909A (en) | 2015-07-07 | 2015-07-07 | Heat-resistant universal type PE-RT( polyethylene of raised temperature resistance) tube and preparation method therefor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140062A (en) * | 2017-06-15 | 2019-01-04 | 山东品源管业有限公司 | A kind of outer black words spoken by an actor from offstage shaped steel wire mesh reinforced plastic composite pipe |
| CN109294032A (en) * | 2018-09-14 | 2019-02-01 | 江苏理工学院 | A kind of modified thermally conductive PE composite material and preparation method of multiple elements design particle filled composite |
| CN109762225A (en) * | 2018-11-23 | 2019-05-17 | 天津力神电池股份有限公司 | High heat conductive insulating functional master batch and application thereof |
| CN111356869A (en) * | 2017-11-17 | 2020-06-30 | 埃克森美孚化学专利公司 | PE-RT pipeline and manufacturing method thereof |
| CN112066095A (en) * | 2020-08-27 | 2020-12-11 | 河北通涛管业集团股份有限公司 | Heat-resistant high-density polyethylene structural wall B-shaped pipe and preparation method thereof |
| CN112373161A (en) * | 2020-10-15 | 2021-02-19 | 浙江巨化新材料研究院有限公司 | High-heat-conductivity and high-heat-resistance multilayer composite pipe and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140062A (en) * | 2017-06-15 | 2019-01-04 | 山东品源管业有限公司 | A kind of outer black words spoken by an actor from offstage shaped steel wire mesh reinforced plastic composite pipe |
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| US11479624B2 (en) | 2017-11-17 | 2022-10-25 | Exxonmobil Chemical Patents Inc. | PE-RT pipes and processes for making the same |
| CN109294032A (en) * | 2018-09-14 | 2019-02-01 | 江苏理工学院 | A kind of modified thermally conductive PE composite material and preparation method of multiple elements design particle filled composite |
| CN109762225A (en) * | 2018-11-23 | 2019-05-17 | 天津力神电池股份有限公司 | High heat conductive insulating functional master batch and application thereof |
| CN112066095A (en) * | 2020-08-27 | 2020-12-11 | 河北通涛管业集团股份有限公司 | Heat-resistant high-density polyethylene structural wall B-shaped pipe and preparation method thereof |
| CN112373161A (en) * | 2020-10-15 | 2021-02-19 | 浙江巨化新材料研究院有限公司 | High-heat-conductivity and high-heat-resistance multilayer composite pipe and preparation method thereof |
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