CN104893068A - Polyethylene of raised temperature resistance (PERT) heat-conducting composite material and preparation method thereof - Google Patents

Polyethylene of raised temperature resistance (PERT) heat-conducting composite material and preparation method thereof Download PDF

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Publication number
CN104893068A
CN104893068A CN201510264113.7A CN201510264113A CN104893068A CN 104893068 A CN104893068 A CN 104893068A CN 201510264113 A CN201510264113 A CN 201510264113A CN 104893068 A CN104893068 A CN 104893068A
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China
Prior art keywords
heat
composite material
conductive filler
coupling agent
parts
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Pending
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CN201510264113.7A
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Chinese (zh)
Inventor
谷亚新
宋玉博
王晴
乔麟奇
刘运学
桂建锋
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Shenyang Jianzhu University
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Shenyang Jianzhu University
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Priority to CN201510264113.7A priority Critical patent/CN104893068A/en
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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
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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

Abstract

The invention discloses a polyethylene of raised temperature resistance (PERT) heat-conducting composite material and a preparation method thereof, belonging to the technical field of materials. The composite material is prepared from the following raw materials in parts by mass: 100 parts of PERT and 60 to 80 parts of a heat-conducting filler. According to the invention, the PERT serves as a matrix, one of ZnO, Al2O3 and graphite serves as a filler, and the filler and the matrix are highly dispersed and mixed to form a heat-conducting network chain. The composite material provided by the invention has excellent processing property, high heat resistance, low production cost and heat conductivity coefficient of 0.95-1.45 W/(m.k), and can meet the requirement of ground radiation heating pipes.

Description

Heat-proof polythene base heat-conductive composite material and preparation method thereof
Technical field
The invention belongs to field of material technology, particularly relate to a kind of heat-proof polythene (PERT) base heat-conductive composite material and preparation method thereof, be mainly used in ground radiation heating tubing.
Background technology
At present, ground radiation heating plastic pipe kind mainly contains PERT pipe, PPR pipe, and PEX manages, XPAP pipe, PB pipe etc.PERT tubing has lot of advantages compared with other several tubing: having can hot-melt adhesive paste, can well contentedly surface radiation heating tubing do not allow the requirement of joint; Lower temperature resistance and snappiness good, bending radius may diminish to 5 times of outer diameter tube; Winter low temperature construction there will not be cold short phenomenon; Its thermostability and shock resistance excellent, and recyclable recycling.
The thermal conductivity of PERT tubing is about 0.4W/ (m ﹒ K), in order to improve the thermal conductivity of PERT tubing better, improves its rate of heat release, and on the basis meeting the good mechanical property of PERT tubing, the thermal conductivity improving PERT tubing is very crucial.
At present, mainly by adding, thermal conductivity material realizes the method improving the thermal conductivity of PERT tubing, namely adds heat conductive filler, as ZnO, aluminium nitride (AlN), Al2O3, magnesium oxide (MgO), graphite etc.Mixed by melt blending with macromolecule matrix by heat conductive filler and obtain heat conductivility.
Can heat conductive filler form the capacity of heat transmission that heat conduction network determines matrix material in macromolecule matrix, so when amount of filler is less, can not form thermal conducting path in the base, can not increase substantially the thermal conductivity of matrix material.When heat conductive filler is increased to a certain amount of, in system, form heat conduction network, fully can improve the thermal conductivity of matrix material.
Summary of the invention
For the technical problem of above-mentioned existence, solve material because easily there is the Thermal release efficiency of seepage and raising material during phase transformation, the invention provides a kind of heat-proof polythene base heat-conductive composite material and preparation method thereof, this matrix material can improve the heat conductivility of matrix material, contentedly the cooling requirements of surface radiation heating tubing.
The object of the invention is to be achieved through the following technical solutions:
Heat-proof polythene base heat-conductive composite material of the present invention, be made up of the raw material of following mass parts:
Heat-proof polythene: 100 parts
Heat conductive filler: 60 ~ 80 parts.
Further, described heat conductive filler is through silane coupling agent surface-treated modification heat conductive filler.
Further, described silane coupling agent is Silane coupling agent KH550.
Further, described modification heat conductive filler is zinc oxide, aluminum oxide or graphite.
The preparation method of heat-proof polythene base heat-conductive composite material of the present invention, comprises the following steps:
(1) silane coupling agent of the 1-3% of heat conductive filler quality is got, emulsification 20-30 minute in water, mix with heat conductive filler again, put into baking oven and be dried to constant weight at 80-100 DEG C, 110-120 DEG C is warming up to again after removing free-water, again be dried to constant weight, make heat conductive filler surface and the hydroxyl condensation in coupling agent;
(2) mix 10-20 minute by heat-proof polythene and modified heat conductive filler high-speed mixer, after mixing, material obtains heat-conductive composite material through extruding pelletization.
Beneficial effect of the present invention is:
The present invention using PERT as matrix, with ZnO, Al 2o 3, one in graphite as filler, make filler disperse with matrix height and mix, form heat conduction network chain.Composite processing excellent property of the present invention, good heat resistance, production cost are lower, thermal conductivity 0.95 ~ 1.45W/ (m ﹒ K), can contentedly surface radiation heating tubing demand.
Embodiment
Describe the present invention below in conjunction with embodiment.
Embodiment 1: the present invention is made up of the raw material of following mass parts:
Heat-proof polythene (PERT): 100 parts
Heat conductive filler: 60 parts.
Described heat conductive filler is through silane coupling agent surface-treated modification heat conductive filler.
Described silane coupling agent is Silane coupling agent KH550.
Described heat conductive filler is zinc oxide (ZnO).
The preparation method of heat-proof polythene base heat-conductive composite material of the present invention, comprises the following steps:
(1) silane coupling agent of 2% of heat conductive filler quality is got, emulsification 30min in water, added ZnO filler high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 90 DEG C, be warming up to 110 DEG C again after removing free-water, be again dried to constant weight, make heat conductive filler surface and the hydroxyl condensation in coupling agent;
By the modification ZnO filler 60 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 0.95W/ (m ﹒ K), and sample tensile strength is 20MPa.
Embodiment 2: this example as different from Example 1: the silane coupling agent getting 1% of heat conductive filler quality in this example, emulsification 30min in water, added heat conductive filler ZnO high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 110 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modification ZnO filler 80 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.17W/ (m ﹒ K), and sample tensile strength is 18.5MPa.
Embodiment 3: this example as different from Example 1: this routine heat conductive filler is Al 2o 3.Get the silane coupling agent of 3% of heat conductive filler quality, emulsification 30min in water, then added heat conductive filler Al 2o 3filler high speed stirs, and after mixing 30min, puts into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 110 DEG C, is again dried to constant weight, makes the hydroxyl condensation in filling surface and coupling agent.By the Modification on Al 2O3 filler 60 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.06W/ (m ﹒ K), and sample tensile strength is 21.5MPa.
Embodiment 4: this example as different from Example 1: this routine heat conductive filler is Al 2o 3.Get the silane coupling agent of 2% of heat conductive filler quality, emulsification 30min in water, then added heat conductive filler Al 2o 3filler high speed stirs, and after mixing 30min, puts into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 110 DEG C, is again dried to constant weight, makes the hydroxyl condensation in filling surface and coupling agent.By the Modification on Al 2O3 filler 80 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.15W/ (m ﹒ K), and sample tensile strength is 20MPa.
Embodiment 5:: this example as different from Example 1: this routine heat conductive filler is graphite.Get the silane coupling agent of 1.5% of heat conductive filler quality, emulsification 30min in water, added heat conductive filler graphite high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 110 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modified graphite filler 60 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.2W/ (m ﹒ K), and sample tensile strength is 20MPa.
Embodiment 6:: this example as different from Example 1: this routine heat conductive filler is graphite.Get the silane coupling agent of 3% of heat conductive filler quality, emulsification 30min in water, added graphite packing high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 110 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modified graphite filler 80 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.45W/ (m ﹒ K), and sample tensile strength is 17MPa.
Embodiment 7: this example as different from Example 1: this routine heat conductive filler is graphite.Get the silane coupling agent of 2% of heat conductive filler quality, emulsification 20min in water, added graphite packing high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 80 DEG C, removing free-water, then oven temperature is increased to 120 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modification mixed fillers 70 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 10min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.24/ (m ﹒ K), and sample tensile strength is 19.5MPa.
Embodiment 8: this example as different from Example 1: the silane coupling agent getting 1% of heat conductive filler quality in this example, emulsification 15min in water, added zinc oxide fillers high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 100 DEG C, removing free-water, then oven temperature is increased to 115 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modification mixed fillers 65 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 20min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 0.98W/ (m ﹒ K), and sample tensile strength is 19.2MPa.
Embodiment 9: this example as different from Example 1: this routine heat conductive filler is aluminum oxide.Get the silane coupling agent of 3% of heat conductive filler quality, emulsification 12min in water, added alumina packing high speed again to stir, after mixing 30min, put into baking oven and be dried to constant weight at 90 DEG C, removing free-water, then oven temperature is increased to 118 DEG C, again be dried to constant weight, make the hydroxyl condensation in filling surface and coupling agent.By the modification mixed fillers 75 parts that obtains and heat-proof polythene 100 parts of high-speed mixing 18min, mixture obtains heat-conductive composite material through extrusion moulding.The thermal conductivity of this heat-conductive composite material is 1.12W/ (m ﹒ K), and sample tensile strength is 20.8MPa.

Claims (5)

1. a heat-proof polythene base heat-conductive composite material, is characterized in that: be made up of the raw material of following mass parts:
Heat-proof polythene: 100 parts
Heat conductive filler: 60 ~ 80 parts.
2. heat-proof polythene base heat-conductive composite material according to claim 1, is characterized in that: described heat conductive filler is through silane coupling agent surface-treated modification heat conductive filler.
3. heat-proof polythene base heat-conductive composite material according to claim 2, is characterized in that: described silane coupling agent is Silane coupling agent KH550.
4. heat-proof polythene base heat-conductive composite material according to claim 1, is characterized in that: described heat conductive filler is zinc oxide, aluminum oxide or graphite.
5. the preparation method of heat-proof polythene base heat-conductive composite material according to claim 1, is characterized in that: comprise the following steps:
(1) silane coupling agent of the 1-3% of heat conductive filler quality is got, emulsification 20-30 minute in water, mix with heat conductive filler again, put into baking oven and be dried to constant weight at 80-100 DEG C, 110-120 DEG C is warming up to again after removing free-water, again be dried to constant weight, make heat conductive filler surface and the hydroxyl condensation in coupling agent;
(2) mix 10-20 minute by heat-proof polythene and modified heat conductive filler high-speed mixer, after mixing, material obtains heat-conductive composite material through extruding pelletization.
CN201510264113.7A 2015-05-21 2015-05-21 Polyethylene of raised temperature resistance (PERT) heat-conducting composite material and preparation method thereof Pending CN104893068A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106589547A (en) * 2016-12-15 2017-04-26 武汉金牛经济发展有限公司 PE-RT (polyethylene of raised temperature resistance) floor heating pipe and production method and application thereof
CN107090119A (en) * 2017-06-09 2017-08-25 长春金鹏塑钢制品有限公司 A kind of compression-resistant material for increasing thermal conductivity and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
夏晓明等: "《功能助剂 塑料 涂料 胶黏剂》", 31 January 2004 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106589547A (en) * 2016-12-15 2017-04-26 武汉金牛经济发展有限公司 PE-RT (polyethylene of raised temperature resistance) floor heating pipe and production method and application thereof
CN107090119A (en) * 2017-06-09 2017-08-25 长春金鹏塑钢制品有限公司 A kind of compression-resistant material for increasing thermal conductivity and preparation method thereof

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Application publication date: 20150909