CN105367875A - Air-conditioning heat-insulation LDPE foamed tube, and preparation method thereof - Google Patents
Air-conditioning heat-insulation LDPE foamed tube, and preparation method thereof Download PDFInfo
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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
- C08L23/06—Polyethene
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- 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
- C08J2323/06—Polyethene
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- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention discloses an air-conditioning heat-insulation LDPE foamed tube, and a preparation method thereof. The air-conditioning heat-insulation LDPE foamed tube comprises following raw materials: LDPE, DCP, AC, CPE, ACR, carbon black, antimony oxide, paraffin, barium stearate, and lead stearate; product hardness ranges from 90 to 100HR, tensile strength ranges from 40 to 60MPa, surface resistivity ranges from 1-6*10<5> omega, notch impact strength ranges from 10 to 14MPa, elongation rate ranges from 50 to 70%, flame combustion time ranges from 0.4 to 0.8s, and flameless combustion time ranges from 0.05 to 0.25s.
Description
Technical field
The application relates to plastics arts, particularly relates to adiabatic LDPE foaming tube of a kind of air-conditioning and preparation method thereof.
Background technology
Low Density Polyethylene (LDPE) is a kind of plastic material, and it is applicable to the various moulding processs of thermoplastic molding's processing, and molding processibility is good.LDPE main application makes film product, also for injection-molded item, and medical apparatus, medicine and packaging material for food, blowing slush molding goods etc.。
For injection-molded item, packaging material for food, medical apparatus, medicine, blowing slush molding goods, fiber etc.. polyethylene can be processed into film, electric wire and cable jacket, tubing, various hollow piece, injection-molded item, fiber etc.Be widely used in agricultural, packaging, electric, mechanical, the aspect such as automobile, daily use Sundry goods.
Polymerization process pressed by Low Density Polyethylene, can be divided into high-pressure process and low-pressure process.Autoclave method and tubular process can be divided into according to type of reactor.Take ethene as raw material, send into reactor, under the effect of initiator, carry out polyreaction with high pressure compressed, from reactor material out, after separator removes unreacted ethene, through melt extruding granulation, dry, fusion, sends to packaging.LDPE and LLDPE has fabulous rheological or melt fluidity.LLDPE has less shearing sensibility, because it has narrow molecular weight distributions and short-chain branch.
Stable enough the use distinctive film bubble of .LLDPE of general single exfoliative inflammation of lips ring to LDPE requires that more perfect lips vane is stablized.Can bubble stability be increased by lips vane cooled interior film bubble, under high productivity, improve film production ability simultaneously.Except the better cooling of film bubble, a lot of film production factory adopts with LDPE blend method to strengthen in the molten reason of LLDPE, and the extrusion molding of LLDPE can complete, when in the blend of LDPE, the concentration of LLDPE reaches 50% on existing ldpe film equipment.Processing 100%LLDPE or be rich in LLDPE with LDPE intermingling material time, adopt general LDPE extruding machine, must improve equipment.
Low Density Polyethylene (LDPE) is that under high pressure, ethylene free radical is polymerized and the thermoplastics of acquisition.LDPE is member the oldest in the polyethylene family in resin, and nineteen forties is early stage just as the first time commercial production of electric wire foreskin.LDPE combines some good performances: transparent, unreactiveness, sealing property are good, are easy to forming process.Which dictates that LDPE is one of the most widely used material in current Polymeric Industry.
LDPE Chinese Low Density Polyethylene is that under high pressure, ethylene free radical is polymerized and the thermoplastics of acquisition.LDPE combines some good performances: transparent, unreactiveness, sealing property are good, are easy to forming process.Conventional LDPE can produce by two kinds of methods: tubular process or autoclave method.Two kinds of method for makings are all high-purity ethylene is passed into high pressure (103 to 276MPa) high temperature (300 to 500F) containing in the reactor of initiator.Initiator or oxygen or a kind of organo-peroxide.The realization of reaction terminating is by adding chain terminator or the link by two molecular chains.Different from the linear structure that other polyethylene (HDPE and LLDPE) method for making obtains, the polymkeric substance obtained by high pressure tactics is branched structure.This branched structure invests the transparency of conventional LDPE excellence, flexibility and is easy to the performance extruded.。
There is no scale operation hexene, octene due to domestic, and import price is more expensive, therefore, the LLDPE resin of domestic production now mainly uses butylene as comonomer.Though some enterprise domestic useful hexene when introducing LLDPE production equipment makes the trade mark of comonomer, have to abandon because of domestic production without hexene eventually, only a small amount of hexene of import when driving examination.The high-grade LLDPE of China's import mostly is this series products.Estimate will increase by a fairly big margin to the LLDPE demand being monomer with 1-hexene from now on.
application content
The application provides that a kind of tensile strength is high, Young's modulus hardness is high, shock strength is high and adiabatic LDPE foaming tube of the air-conditioning that elongation at break heat resisting temperature is high and preparation method thereof, solves the technical problems such as the low and hardness of current material tensile strength is low.
The application is by the following technical solutions: the adiabatic LDPE foaming tube of a kind of air-conditioning, it is as follows that mass fraction proportioning pressed by its raw material: LDPE100 part, DCP is 1-5 part, and AC is 20-40 part, CPE15-35 part, ACR2-8 part, carbon black 5-25 part, weisspiessglanz 6-10 part, paraffin 0.8-1.2 part, barium stearate 1-5 part, lead stearate 1-3 part.
A kind of optimal technical scheme as the application: it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 2 parts, and AC is 25 parts, CPE20 part, ACR4 part, carbon black 10 parts, weisspiessglanz 7 parts, 0.9 part, paraffin, barium stearate 2 parts, lead stearate 1.5 parts.
A kind of optimal technical scheme as the application: it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 4 parts, and AC is 35 parts, CPE30 part, ACR6 part, carbon black 20 parts, weisspiessglanz 9 parts, 1.1 parts, paraffin, barium stearate 4 parts, lead stearate 2.5 parts.
A kind of optimal technical scheme as the application: it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 3 parts, and AC is 30 parts, CPE25 part, ACR5 part, carbon black 15 parts, weisspiessglanz 8 parts, 1 part, paraffin, barium stearate 3 parts, lead stearate 2 parts.
Prepare a method for the adiabatic LDPE foaming tube of described air-conditioning, step is:
The first step: according to mass fraction proportioning take LDPE, DCP for, AC for, CPE, ACR, carbon black, weisspiessglanz, paraffin, barium stearate and lead stearate;
Second step: AC, CPE and ACR are mixed 10-30min at 30-40 DEG C, adds LDPE, paraffin, DCP and carbon black, at 110-130 DEG C, with 100-300r/min speed mixing 20-40min;
3rd step: add weisspiessglanz, barium stearate and lead stearate, mix rear input twin screw extruder, barrel temperature 155-165 DEG C, 160-170 DEG C, 170-180 DEG C, 175-185 DEG C, 170-180 DEG C, head temperature 180-190 DEG C, screw speed 20-40r/min, vacuum tightness 0.06-0.1MPa.
beneficial effect
Adiabatic LDPE foaming tube of a kind of air-conditioning described in the application and preparation method thereof adopts above technical scheme compared with prior art, has following technique effect: 1, product hardness 90-100HR, tensile strength 40-60MPa; 2, surface resistivity 1-6 × 10
5Ω, notched Izod impact strength 10-14MPa; 3, elongation 50-70%, flaming combustion time 0.4-0.8s, glowing time 0.05-0.25s, preparation method is simple, and raw material is simple and easy to get, the widespread production not division of history into periods can replace current material.
Embodiment
Be further described the application below in conjunction with example, embodiment, only for being described the application, does not form the restriction to right, and other alternative means that it may occur to persons skilled in the art that, all in the application's right.
Embodiment 1:
The first step: take LDPE100 part according to mass fraction proportioning, DCP is 1 part, and AC is 20 parts, CPE15 part, ACR2 part, carbon black 5 parts, weisspiessglanz 6 parts, 0.8 part, paraffin, barium stearate 1 part, lead stearate 1 part.
Second step: AC, CPE and ACR are mixed 10min at 30 DEG C, adds LDPE, paraffin, DCP and carbon black, at 110 DEG C, with 100r/min speed mixing 20min.
3rd step: add weisspiessglanz, barium stearate and lead stearate, mixes rear input twin screw extruder, barrel temperature 155 DEG C, 160 DEG C, 170 DEG C, 175 DEG C, 170 DEG C, head temperature 180 DEG C, screw speed 20r/min, vacuum tightness 0.06MPa.
Product hardness 90HR, tensile strength 40MPa; Surface resistivity 6 × 10
5Ω, notched Izod impact strength 10MPa; Elongation 50%, flaming combustion time 0.8s, glowing time 0.25s.
Embodiment 2:
The first step: take LDPE100 part according to mass fraction proportioning, DCP is 5 parts, and AC is 40 parts, CPE35 part, ACR8 part, carbon black 25 parts, weisspiessglanz 10 parts, 1.2 parts, paraffin, barium stearate 5 parts, lead stearate 3 parts.
Second step: AC, CPE and ACR are mixed 30min at 40 DEG C, adds LDPE, paraffin, DCP and carbon black, at 130 DEG C, with 300r/min speed mixing 40min.
3rd step: add weisspiessglanz, barium stearate and lead stearate, mixes rear input twin screw extruder, barrel temperature 165 DEG C, 170 DEG C, 180 DEG C, 185 DEG C, 180 DEG C, head temperature 190 DEG C, screw speed 40r/min, vacuum tightness 0.1MPa.
Product hardness 92HR, tensile strength 45MPa; Surface resistivity 5 × 10
5Ω, notched Izod impact strength 11MPa; Elongation 65%, flaming combustion time 0.7s, glowing time 0.2s.
Embodiment 3:
The first step: take LDPE100 part according to mass fraction proportioning, DCP is 2 parts, and AC is 25 parts, CPE20 part, ACR4 part, carbon black 10 parts, weisspiessglanz 7 parts, 0.9 part, paraffin, barium stearate 2 parts, lead stearate 1.5 parts.
Second step: AC, CPE and ACR are mixed 10-30min at 30 DEG C, adds LDPE, paraffin, DCP and carbon black, at 110 DEG C, with 100r/min speed mixing 20min.
3rd step: add weisspiessglanz, barium stearate and lead stearate, mixes rear input twin screw extruder, barrel temperature 155 DEG C, 160 DEG C, 170 DEG C, 175 DEG C, 170 DEG C, head temperature 180 DEG C, screw speed 20r/min, vacuum tightness 0.06MPa.
Product hardness 95HR, tensile strength 50MPa; Surface resistivity 3 × 10
5Ω, notched Izod impact strength 12MPa; Elongation 60%, flaming combustion time 0.6s, glowing time 0.15s.
Embodiment 4:
The first step: take LDPE100 part according to mass fraction proportioning, DCP is 4 parts, and AC is 35 parts, CPE30 part, ACR6 part, carbon black 20 parts, weisspiessglanz 9 parts, 1.1 parts, paraffin, barium stearate 4 parts, lead stearate 2.5 parts.
Second step: AC, CPE and ACR are mixed 30min at 40 DEG C, adds LDPE, paraffin, DCP and carbon black, at 130 DEG C, with 300r/min speed mixing 40min.
3rd step: add weisspiessglanz, barium stearate and lead stearate, mixes rear input twin screw extruder, barrel temperature 165 DEG C, 170 DEG C, 180 DEG C, 185 DEG C, 180 DEG C, head temperature 190 DEG C, screw speed 40r/min, vacuum tightness 0.1MPa.
Product hardness 99HR, tensile strength 55MPa; Surface resistivity 2 × 10
5Ω, notched Izod impact strength 13MPa; Elongation 65%, flaming combustion time 0.5s, glowing time 0.1s.
Embodiment 5:
The first step: take LDPE100 part according to mass fraction proportioning, DCP is 3 parts, and AC is 30 parts, CPE25 part, ACR5 part, carbon black 15 parts, weisspiessglanz 8 parts, 1 part, paraffin, barium stearate 3 parts, lead stearate 2 parts.
Second step: AC, CPE and ACR are mixed 20min at 35 DEG C, adds LDPE, paraffin, DCP and carbon black, at 120 DEG C, with 200r/min speed mixing 30min.
3rd step: add weisspiessglanz, barium stearate and lead stearate, mixes rear input twin screw extruder, barrel temperature 160 DEG C, 165 DEG C, 175 DEG C, 180 DEG C, 175 DEG C, head temperature 185 DEG C, screw speed 30r/min, vacuum tightness 0.08MPa.
Product hardness 100HR, tensile strength 60MPa; Surface resistivity 1 × 10
5Ω, notched Izod impact strength 14MPa; Elongation 70%, flaming combustion time 0.4s, glowing time 0.05s.
Claims (5)
1. the adiabatic LDPE foaming tube of air-conditioning, it is characterized in that, it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 1-5 part, AC is 20-40 part, CPE15-35 part, ACR2-8 part, carbon black 5-25 part, weisspiessglanz 6-10 part, paraffin 0.8-1.2 part, barium stearate 1-5 part, lead stearate 1-3 part.
2. the adiabatic LDPE foaming tube of a kind of air-conditioning according to claim 1, it is characterized in that, it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 2 parts, AC is 25 parts, CPE20 part, ACR4 part, carbon black 10 parts, weisspiessglanz 7 parts, 0.9 part, paraffin, barium stearate 2 parts, lead stearate 1.5 parts.
3. the adiabatic LDPE foaming tube of a kind of air-conditioning according to claim 1, it is characterized in that, it is as follows that mass fraction proportioning pressed by the raw material of the adiabatic LDPE foaming tube of described air-conditioning: LDPE100 part, and DCP is 4 parts, AC is 35 parts, CPE30 part, ACR6 part, carbon black 20 parts, weisspiessglanz 9 parts, 1.1 parts, paraffin, barium stearate 4 parts, lead stearate 2.5 parts.
4. the adiabatic LDPE foaming tube of a kind of air-conditioning according to claim 1, it is characterized in that: the raw material of the adiabatic LDPE foaming tube of described air-conditioning is as follows by mass fraction proportioning: LDPE100 part, DCP is 3 parts, and AC is 30 parts, CPE25 part, ACR5 part, carbon black 15 parts, weisspiessglanz 8 parts, 1 part, paraffin, barium stearate 3 parts, lead stearate 2 parts.
5. make a method for the adiabatic LDPE foaming tube of air-conditioning according to claim 1, it is characterized in that, comprise the steps:
The first step: take LDPE, DCP, AC, CPE, ACR, carbon black, weisspiessglanz, paraffin, barium stearate and lead stearate according to mass fraction proportioning;
Second step: AC, CPE and ACR are mixed 10-30min at 30-40 DEG C, adds LDPE, paraffin, DCP and carbon black, at 110-130 DEG C, with 100-300r/min speed mixing 20-40min;
3rd step: add weisspiessglanz, barium stearate and lead stearate, mix rear input twin screw extruder, barrel temperature 155-165 DEG C, 160-170 DEG C, 170-180 DEG C, 175-185 DEG C, 170-180 DEG C, head temperature 180-190 DEG C, screw speed 20-40r/min, vacuum tightness 0.06-0.1MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106046502A (en) * | 2016-07-12 | 2016-10-26 | 上海达锦暖通器材有限公司 | Heat-insulating LDPE foam material for air-conditioner copper tube heat preservation and preparation method of foam material |
| CN108892830A (en) * | 2018-03-26 | 2018-11-27 | 南京聚隆科技股份有限公司 | A kind of hollow blow molding fretting map car duct material and preparation method thereof |
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| CN101735503A (en) * | 2009-12-18 | 2010-06-16 | 金发科技股份有限公司 | Foamable flame resistance polyethylene composite material and preparation method thereof |
| CN102690459A (en) * | 2012-04-27 | 2012-09-26 | 华东理工大学 | High-resilience chemical crosslinked polyethylene foam material and preparation method thereof |
| CN103435889A (en) * | 2013-08-23 | 2013-12-11 | 吴江市英力达塑料包装有限公司 | Polyvinyl chloride soft foam plastic coiled material and preparation method thereof |
| CN103483665A (en) * | 2013-09-24 | 2014-01-01 | 吴江市董鑫塑料包装厂 | Cross-linking micro-foaming slipper plastic |
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2015
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Patent Citations (5)
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| CA2550953A1 (en) * | 2003-12-24 | 2005-07-14 | Dow Global Technologies Inc. | Thermally-reversible crosslinking of polymers |
| CN101735503A (en) * | 2009-12-18 | 2010-06-16 | 金发科技股份有限公司 | Foamable flame resistance polyethylene composite material and preparation method thereof |
| CN102690459A (en) * | 2012-04-27 | 2012-09-26 | 华东理工大学 | High-resilience chemical crosslinked polyethylene foam material and preparation method thereof |
| CN103435889A (en) * | 2013-08-23 | 2013-12-11 | 吴江市英力达塑料包装有限公司 | Polyvinyl chloride soft foam plastic coiled material and preparation method thereof |
| CN103483665A (en) * | 2013-09-24 | 2014-01-01 | 吴江市董鑫塑料包装厂 | Cross-linking micro-foaming slipper plastic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106046502A (en) * | 2016-07-12 | 2016-10-26 | 上海达锦暖通器材有限公司 | Heat-insulating LDPE foam material for air-conditioner copper tube heat preservation and preparation method of foam material |
| CN108892830A (en) * | 2018-03-26 | 2018-11-27 | 南京聚隆科技股份有限公司 | A kind of hollow blow molding fretting map car duct material and preparation method thereof |
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Application publication date: 20160302 |