CN105949593A - Manufacturing method of high-temperature-resistant high-heat-conductivity nano composite floor heating pipe - Google Patents
Manufacturing method of high-temperature-resistant high-heat-conductivity nano composite floor heating pipe Download PDFInfo
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- CN105949593A CN105949593A CN201610334820.3A CN201610334820A CN105949593A CN 105949593 A CN105949593 A CN 105949593A CN 201610334820 A CN201610334820 A CN 201610334820A CN 105949593 A CN105949593 A CN 105949593A
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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
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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
-
- 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
- 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
-
- 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 & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the field of preparation methods of nano composite materials and relates to a manufacturing method of a high-temperature-resistant high-heat-conductivity nano composite floor heating pipe. The manufacturing method includes: using nano SiC as a high-temperature-resistant high-heat-conductivity source and a high polymer material as a substrate; utilizing a double-screw extruder for extruding and granulating; utilizing a former for traction and cutting to obtain the pipe. The pipe is cheap in raw material, low in cost, good in heat conducting effect and excellent in mechanical performance. Pressing needs on novel high-heat-conductivity low-energy-consumption composite floor heating pipes of residential heating are met, and the pipe has wide application prospect in the aspect of heat transfer.
Description
Technical field
The invention belongs to the preparation technology field of composite, relate to a kind of nano combined floor heating of high temperature resistance high heat conduction
The preparation method of pipe.
Background technology
Along with chemical building material industrial expansion, a collection of pliability is good, intensity is high, shock resistance and have the most heat-resisting
The appearance of the chemical tubing of ability, provides breakthrough development opportunity to ground radiation heating.But its thermal conductivity is non-
Normal is low, has had a strong impact on the lifting of its heat transfer property.And carborundum is the compound that a kind of covalent bond is the strongest,
Common crystal formation has the α-SiC of hexagonal crystal system and the β-SiC of cubic system, and in the two, β-SiC has and preferably leads
Electricity and heat conductivility, heat conductivity λ is 100～125W/ (m K), and higher hardness, more preferable toughness,
And wear-resistant, high temperature resistant, resistance to thermal shock, corrosion-resistant, radiation hardness etc..If SiC is entered with existing macromolecular material
Row is compound, can develop a kind of novel fire resistant high heat conducting nano SiC/ macromolecule composite floor heating tube, meet
The industries such as the residence heating urgent needs to novel high heat conduction low energy consumption composite floor heating tube.
Summary of the invention
The invention aims to improve the deficiencies in the prior art and provide a kind of high temperature resistance high heat conduction nanometer multiple
Closing the preparation method of floor heating pipe, the method materials and technique are simple, with low cost, this material can be used for resistance to
High temperature height heat conduction, and the carrier transmitted as heat energy.
The object of the invention technical scheme is: the preparation method of the nano combined floor heating pipe of a kind of high temperature resistance high heat conduction, its
Specifically comprise the following steps that
(1) nano SiC and filler are added (nano SiC and filler are completely dissolved) in organic solvent will surpass
Sound wave shock, adds surface modifier, ball milling, filters, dries, and obtains modified mixed powder；
(2) being heated by macromolecular material, temperature is 50～70 DEG C, and stirs；
(3) in the uniform macromolecular material of step (2) heated and stirred add heat stabilizer, anti-impact modifier,
Antioxidant and high-temperature resisting pigment copper are black, and uniform stirring obtains compound；
(4) in the compound of step (3), add the modified mixed powder that step (1) obtains, uniformly stir
Mix；
(5) final material that step (4) obtains is put into double screw extruder carries out extruding pelletization；The most double
Screw speed is 270～330rpm, and extrusion temperature is 155～185 DEG C；
(6) pellet obtained in step (5) is put in extrusion shaping machine, determine the size of caliber, lead
Draw, cut, finally give the nano combined floor heating pipe of high temperature resistance high heat conduction；The wherein barrel zone temperature of extrusion shaping machine
It is set as 180～200 DEG C, mold temperature 160～170 DEG C.
The particle diameter of the nano SiC described in preferred steps (1) is 20nm～500nm；Described filler is calcium carbonate
With the mixture of aluminium oxide, wherein calcium carbonate and quality of alumina are than for 1:(0.5～2)；Described surface modifier
For the one in silane coupler, titanate coupling agent or aluminate coupling agent.
In preferred steps (1), the mass ratio of nano SiC and filler is 1:(0.3～1)；Surface modifier adds quality and accounts for
Nano SiC and the 1% of filler gross mass～3%.
Organic solvent described in preferred steps (1) is the one in dehydrated alcohol, ethanol or acetone.
Macromolecular material described in preferred steps (2) is Low Density Polyethylene (LDPE), linear low density polyethylene
(LLDPE), high density polyethylene (HDPE) (HDPE) or the one of medium density polyethylene (MDPE) or its mixture.
Heat stabilizer described in preferred steps (3) is dibasic lead sulfite, calcium stearate or Methyl stannum mercaptide
One；Described anti-impact modifier is acrylonitrile-butadiene-styrene copolymer (ABS), methacrylic acid
Methyl ester-BS (MBS), chlorinated polyethylene (CPE), ethylene-vinyl acetate copolymer (EVA)
Or the one of styrene-butadiene-styrene (SBS)；The antioxidant that described antioxidant is sold by market
1010, the one in antioxidant 1076, irgasfos 168 or antioxidant 215.
In preferred steps (3), heat stabilizer is (0.02～0.06) with the mass ratio of macromolecular material: 1；Impact modification
Agent is (0.04～0.06) with the mass ratio of macromolecular material: 1；Antioxidant with the mass ratio of macromolecular material is
(0.005～0.02): 1；High-temperature resisting pigment copper is black is (0.005～0.01) with macromolecular material mass ratio: 1
In preferred steps (3), the speed of uniform stirring is 45～60rpm, mixing time 30～80 minutes, stirring temperature
Spend 50～75 DEG C, and carry out being incubated 3～8 hours.In preferred steps (4), the speed of uniform stirring is 45～60rpm,
Whipping temp is maintained between 50～75 DEG C, mixing time 30～60 minutes.
The tensile stress of the nano combined floor heating pipe of the preparation-obtained high temperature resistance high heat conduction of the present invention exists
Between 4.5～14.8MPa, heat conductivity is between 0.63～1.38w/m k.
Beneficial effect:
The inventive method and the nano combined floor heating pipe of high temperature resistance high heat conduction have a characteristic that
(1) raw material is inexpensive, reduces cost.This method have employed packing material, greatly reduce and produce into
This.
(2) heat conduction high temperature resistant, high.In this method, the nano SiC of employing is as Heat Conduction Material, its heat conduction system
Number λ is 100～125W/ (m K), greatly improves the heat-conducting effect of floor heating pipe, decreases the waste of thermal source.
(3) excellent in mechanical performance.The surface modifier that this method uses to macromolecular material and inorganic material it
Between serve good interconnection function；Stabilizer, antioxidant and anti-impact modifier all make the power of composite floor heating tube
Performance is improved.
Accompanying drawing explanation
Fig. 1 is the photo in kind of the block high temperature resistance high heat conduction nano composite material that example 1 prepares.
Detailed description of the invention
Example 1
It is the SiC of 20nm by 25 parts of particle diameters, 15 parts of CaCO3With 10 parts of Al2O3Add the ethanol (addition of ethanol
Be completely dissolved for nano SiC and filler) in carry out ultrasonic wave concussion 15min, add 1.5 parts of silane even
Connection agent, ball milling 12h, filters, dries, obtain modified mixed powder；100 parts of linea low densities are gathered
Ethylene (LLDPE) material is heated to 50 DEG C, and uniform stirring；To be mixed uniformly after, add 2 parts of calcium stearates
Heat stabilizer, 4 parts of chlorinated polyethylene anti-impact modifiers, 0.5 part of antioxidant 1010 and 0.5 part of high temperature resistant face
Material copper is black, uniform stirring, mixing speed 45rpm, mixing time 30 minutes, and whipping temp 50 DEG C is gone forward side by side
Row insulation 3 hours；It is added thereto to modified mixed powder again, uniform stirring, mixing speed 45rpm,
Whipping temp is 60 DEG C, mixing time 30 minutes；After stirring terminates, final material is put into twin screw and squeezes
Going out and carry out extruding pelletization in machine, twin screw rotating speed is 270rpm, and extrusion temperature is 155 DEG C；Finally will draw
Pellet put in extrusion shaping machine, barrel temperatures set is 180 DEG C, mold temperature 160 DEG C, determines pipe
The size in footpath, carries out drawing, cutting, finally gives tubing.Obtained block high temperature resistance high heat conduction nanometer is multiple
The photo in kind of condensation material as it is shown in figure 1, can be seen that from figure this composite is complete block, surface without
Crackle, and possess certain mechanical strength.The thermal conductivity of made tubing is 0.63w/m k, and hot strength is
14.8MPa。
Example 2
It is the SiC of 100nm by 35 parts of particle diameters, 10 parts of CaCO3With 10 parts of Al2O3Add acetone (adding of acetone
Enter amount and be nano SiC and filler is completely dissolved) in carry out ultrasonic wave concussion 15min, add 1.5 parts of titaniums
Acid esters coupling agent, ball milling 12h, filters, dries, obtain modified mixed powder；Linear low by 80 parts
Density polyethylene (LLDPE) and 20 parts of Low Density Polyethylene (LDPE) materials are heated to 55 DEG C, and uniform stirring；
To be mixed uniformly after, add 3 parts of dibasic lead sulfite heat stabilizers, 5 parts of acrylonitrile-butadiene-styrene (ABS)s
Copolymer (ABS) anti-impact modifier, 1 part of antioxidant 1076 and 0.6 part of high-temperature resisting pigment copper are black, uniformly stir
Mix, mixing speed 50rpm, mixing time 40 minutes, whipping temp 60 DEG C, and carry out being incubated 5 hours；
Being added thereto to modified mixed powder, uniform stirring, mixing speed 50rpm again, whipping temp is 60 DEG C,
Mixing time 40 minutes；After stirring terminates, final material is put into and double screw extruder carries out extrusion makes
Grain, twin screw rotating speed is 290rpm, and extrusion temperature is 165 DEG C；Finally the pellet drawn is put into extrusion
In forming machine, barrel temperatures set is 185 DEG C, and mold temperature 165 DEG C determines the size of caliber, leads
Draw, cut, finally give tubing.The thermal conductivity of the tubing of system is 0.78w/m k, and hot strength is 9.2MPa.
Example 3
It is the SiC of 500nm by 45 parts of particle diameters, 10 parts of CaCO3With 5 parts of Al2O3Add dehydrated alcohol (ethanol
Addition be nano SiC and filler is completely dissolved) in carry out ultrasonic wave concussion 15min, add 1 part
Titanate coupling agent and 0.8 part of silane coupler, ball milling 12h, filtering drying, obtain modified mixed powder
Material；80 parts of material linear low density polyethylene (LLDPE) and 20 parts of high density polyethylene (HDPE)s (HDPE) are heated to
60 DEG C, and uniform stirring；To be mixed uniformly after, add 4 parts of calcium stearate heat stabilizers, 4 parts of ethyl vinyl acetate
Ethylene copolymer (EVA) anti-impact modifier, 1.5 parts of irgasfos 168s and 0.7 part of copper are black, and uniform stirring stirs
Mix speed 55rpm, mixing time 50 minutes, whipping temp 65 DEG C, and carry out being incubated 6 hours；Again to it
The mixed powder that middle addition is modified, uniform stirring, mixing speed 55rpm, whipping temp is 65 DEG C, stirs
Mix the time 50 minutes；After stirring terminates, final material is put into double screw extruder carries out extruding pelletization,
Twin screw rotating speed is 310rpm, and extrusion temperature is 175 DEG C；Finally the pellet drawn is put into extrusion molding
In machine, barrel temperatures set is 190 DEG C, and mold temperature 165 DEG C determines the size of caliber, carry out drawing,
Cutting, finally gives tubing.The thermal conductivity of the tubing of system is 0.97w/m k, and hot strength is 6.1MPa.
Example 4
It is the SiC of 20nm by 50 parts of particle diameters, 5 parts of CaCO3With 10 parts of Al2O3Addition dehydrated alcohol be (ethanol
Addition is nano SiC and filler is completely dissolved) in carry out ultrasonic wave concussion 15min, add 1 part of aluminum
Acid esters coupling agent, ball milling 12h, filters, dries, obtain modified mixed powder；Linear low by 80 parts
Density polyethylene (LLDPE) and 20 parts of medium density polyethylene (MDPE) materials are heated to 70 DEG C, and uniform stirring；
To be mixed uniformly after, adds 5 parts of calcium stearate heat stabilizers, 6 parts of ethylene-vinyl acetate copolymers (EVA) anti-
Impact modifying agent, 1.5 parts of antioxidant 215 and 0.9 part of copper are black, uniform stirring, and mixing speed 60rpm is stirred
Mix the time 60 minutes, whipping temp 70 DEG C, and carry out being incubated 7 hours；It is added thereto to modified mixing again
Closing powder, uniform stirring, mixing speed 60rpm, whipping temp is 70 DEG C, mixing time 60 minutes；Stir
After mixing end, being put into by final material and carry out extruding pelletization in double screw extruder, twin screw rotating speed is
330rpm, extrusion temperature is 180 DEG C；Finally the pellet drawn is put in extrusion shaping machine, barrel zone temperature
It is set as 185 DEG C, mold temperature 170 DEG C, determine the size of caliber, carry out drawing, cutting, finally give
Tubing.The thermal conductivity of the tubing of system is 1.2w/m k, and hot strength is 5.3MPa.
Example 5
By 55 parts of particle diameters be the SiC of 20nm, 10 parts of CaCO3With 10 parts of Al2O3Add acetone (adding of acetone
Enter amount and be nano SiC and filler is completely dissolved) in carry out ultrasonic wave concussion 20min, add 0.5 part of aluminum
Acid esters coupling agent and 1.5 parts of silane couplers, ball milling 8～15h, filters, dries, obtain modified mixing
Powder；100 parts of Low Density Polyethylene (LDPE) materials are heated to 70 DEG C, and uniform stirring；To be mixed uniformly
After, add 6 parts of calcium stearate heat stabilizers, 6 parts of MBSs (MBS)
Anti-impact modifier, 2 parts of antioxidant 1010s and 1 part of copper are black, uniform stirring, and mixing speed 60rpm is stirred
Mix the time 80 minutes, whipping temp 75 DEG C, and carry out being incubated 8 hours；It is added thereto to modified mixing again
Closing powder, uniform stirring, mixing speed 60rpm, whipping temp is 60 DEG C, mixing time 60 minutes；Stir
After mixing end, being put into by final material and carry out extruding pelletization in double screw extruder, twin screw rotating speed is
330rpm, extrusion temperature is 185 DEG C；Finally the pellet drawn is put in extrusion shaping machine, barrel zone temperature
It is set as 200 DEG C, mold temperature 170 DEG C, determine the size of caliber, carry out drawing, cutting, finally give
Tubing.The thermal conductivity of the tubing of system is 1.38w/m k, and hot strength is 4.5MPa.
Claims (10)
1. a preparation method for the nano combined floor heating pipe of high temperature resistance high heat conduction, it specifically comprises the following steps that
(1) nano SiC and filler are added in organic solvent and will carry out ultrasonic wave concussion, add surface modifier, ball milling, filter, dry, obtain modified mixed powder；
(2) being heated by macromolecular material, temperature is 50～70 DEG C, and stirs；
(3) adding heat stabilizer, anti-impact modifier, antioxidant and high-temperature resisting pigment copper in the uniform macromolecular material of step (2) heated and stirred black, uniform stirring obtains compound；
(4) in the compound of step (3), the modified mixed powder that step (1) obtains, uniform stirring are added；
(5) final material that step (4) obtains is put into double screw extruder carries out extruding pelletization；Wherein twin screw rotating speed is 270～330rpm, and extrusion temperature is 155～185 DEG C；
(6) pellet obtained in step (5) is put in extrusion shaping machine, determine the size of caliber, carry out drawing, cutting, finally give the nano combined floor heating pipe of high temperature resistance high heat conduction；Wherein the barrel temperatures set of extrusion shaping machine is 180～200 DEG C, mold temperature 160～170 DEG C.
Preparation method the most according to claim 1, it is characterised in that the particle diameter of the nano SiC described in step (1) is 20nm～500nm；Described filler is the mixture of calcium carbonate and aluminium oxide, and wherein calcium carbonate and quality of alumina are than for 1:(0.5～2)；Described surface modifier is the one in silane coupler, titanate coupling agent or aluminate coupling agent.
Preparation method the most according to claim 1, it is characterised in that in step (1), the mass ratio of nano SiC and filler is 1:(0.3～1)；Surface modifier adds quality and accounts for nano SiC and the 1% of filler gross mass～3%.
Preparation method the most according to claim 1, it is characterised in that the organic solvent described in step (1) is the one in dehydrated alcohol, ethanol or acetone.
Preparation method the most according to claim 1, it is characterised in that the one that macromolecular material is Low Density Polyethylene, linear low density polyethylene, high density polyethylene (HDPE) or medium density polyethylene described in step (2) or its mixture.
Preparation method the most according to claim 1, it is characterised in that the one that heat stabilizer is dibasic lead sulfite, calcium stearate or Methyl stannum mercaptide described in step (3)；Described anti-impact modifier is the one of acrylonitrile-butadiene-styrene copolymer, MBS, chlorinated polyethylene, ethylene-vinyl acetate copolymer or styrene-butadiene-styrene；Described antioxidant is the one in antioxidant 1010, antioxidant 1076, irgasfos 168 or antioxidant 215.
Preparation method the most according to claim 1, it is characterised in that in step (3), heat stabilizer is (0.02～0.06) with the mass ratio of macromolecular material: 1；Anti-impact modifier is (0.04～0.06) with the mass ratio of macromolecular material: 1；Antioxidant is (0.005～0.02) with the mass ratio of macromolecular material: 1；High-temperature resisting pigment copper is black is (0.005～0.01) with macromolecular material mass ratio: 1.
Preparation method the most according to claim 1, it is characterised in that in step (3), the speed of uniform stirring is 45～60rpm, mixing time 30～80 minutes, whipping temp 50～75 DEG C, and carry out being incubated 3～8 hours.
Preparation method the most according to claim 1, it is characterised in that in step (4), the speed of uniform stirring is 45～60rpm, whipping temp is maintained between 50～75 DEG C, mixing time 30～60 minutes.
Preparation method the most according to claim 1, it is characterised in that the tensile stress of the nano combined floor heating pipe of high temperature resistance high heat conduction prepared is between 4.5～14.8MPa, and heat conductivity is between 0.63～1.38w/m k.
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| CN201610334820.3A CN105949593A (en) | 2016-05-19 | 2016-05-19 | Manufacturing method of high-temperature-resistant high-heat-conductivity nano composite floor heating pipe |
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| CN201610334820.3A CN105949593A (en) | 2016-05-19 | 2016-05-19 | Manufacturing method of high-temperature-resistant high-heat-conductivity nano composite floor heating pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021152150A1 (en) * | 2020-01-30 | 2021-08-05 | Borealis Ag | Polymer composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735509A (en) * | 2008-11-14 | 2010-06-16 | 郑州大学 | Micron-nano silicon carbide/polypropylene composite and preparation method thereof |
| CN102101922A (en) * | 2009-12-22 | 2011-06-22 | 上海新上化高分子材料有限公司 | Wear-resistance halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic and preparation method thereof |
| CN104817767A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Plastic pipe |
-
2016
- 2016-05-19 CN CN201610334820.3A patent/CN105949593A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735509A (en) * | 2008-11-14 | 2010-06-16 | 郑州大学 | Micron-nano silicon carbide/polypropylene composite and preparation method thereof |
| CN102101922A (en) * | 2009-12-22 | 2011-06-22 | 上海新上化高分子材料有限公司 | Wear-resistance halogen-free low-smoke expansion flame-retarding polyolefin sheath plastic and preparation method thereof |
| CN104817767A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Plastic pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021152150A1 (en) * | 2020-01-30 | 2021-08-05 | Borealis Ag | Polymer composition |
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Application publication date: 20160921 |