CN106117741A - A kind of polyethylene composite foam material and preparation method thereof - Google Patents
A kind of polyethylene composite foam material and preparation method thereof Download PDFInfo
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- CN106117741A CN106117741A CN201610558941.6A CN201610558941A CN106117741A CN 106117741 A CN106117741 A CN 106117741A CN 201610558941 A CN201610558941 A CN 201610558941A CN 106117741 A CN106117741 A CN 106117741A
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- 229920000573 polyethylene Polymers 0.000 title claims abstract description 42
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 38
- -1 polyethylene Polymers 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000006261 foam material Substances 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011701 zinc Substances 0.000 claims abstract description 18
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 16
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 16
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 16
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 13
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 13
- 229920001194 natural rubber Polymers 0.000 claims abstract description 13
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 12
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005977 Ethylene Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 32
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010097 foam moulding Methods 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000002671 adjuvant Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 229920001519 homopolymer Polymers 0.000 abstract description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- 238000005187 foaming Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000002086 nanomaterial Substances 0.000 description 4
- 239000012612 commercial material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- 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
- C08J9/08—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 carbon dioxide
-
- 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
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
-
- 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
- C08J2323/06—Polyethene
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- 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
- C08J2407/00—Characterised by the use of natural rubber
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- 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
- C08K2201/003—Additives being defined by their diameter
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- C08K2201/006—Additives being defined by their surface area
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- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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
- C08L2207/062—HDPE
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
A kind of polyethylene composite foam material and preparation method thereof, belongs to homopolymer or the copolymer technical field of ethylene, is made up of the raw material of following weight part ratio: natural rubber, 100 parts；Polyethylene, 150 ~ 210 parts；Nanometer Zn CO3, 150 ~ 210 parts；Blowing agent AC, 1.5 ~ 3 parts；Foaming agent NaHCO3, 0.7 ~ 1.5 part；Stearic acid, 1.5 ~ 3 parts；Zinc oxide, 2 ~ 5 parts；Aluminium titanium composite coupler, 0.5 ~ 2 part；Kaolin, 10 ~ 24 parts.This foamed materials, by natural rubber and the blended and use of polyethylene, mutually makes up in performance, thus possesses good combination property.
Description
Technical field
The invention belongs to homopolymer or the copolymer technical field of ethylene, be particularly related to a kind of polyethylene composite foam material
Material and preparation method thereof.
Background technology
Foamed materials is with polymer as matrix, gas be scattered in formed in solid polymer containing a large amount of bubbles
Aggregation, therefore it is also called porous material.Foamed materials is in addition to having the advantage of general material, with similar unexpanded material phase
Ratio, foamed materials has many advantages: as light weight, heat-proof quality and sound insulation value are good, specific strength is high, have absorption impact
Load-carrying ability, cheap, saving material etc..So foamed materials to be widely used in industry, agricultural and articles for daily use many
Aspect.
Summary of the invention
It is an object of the invention to overcome defect mentioned above and deficiency, and a kind of polyethylene composite foam material is provided
And preparation method thereof.
The technical scheme that the present invention realizes the employing of its purpose is as follows.
A kind of polyethylene composite foam material, is made up of the raw material of following weight part ratio:
Natural rubber, 100 parts；
Polyethylene, 150 ~ 210 parts；
Nanometer Zn CO3, 150 ~ 210 parts；
Blowing agent AC, 1.5 ~ 3 parts；
Foaming agent NaHCO3, 0.7 ~ 1.5 part；
Stearic acid, 1.5 ~ 3 parts；
OxidationZinc, 2 ~ 5 parts；
Aluminium titanium composite coupler, 0.5 ~ 2 part；
Kaolin, 10 ~ 24 parts.
As preferably, described polyethylene is high density polyethylene, and melt index is 0.01 ~ 0.5g/10min.
As preferably, described Kaolin granularity is 1.0u.
The preparation method of a kind of polyethylene composite foam material, comprises the following steps:
Step one. the preparation of mixing major ingredient: polyethylene is dissolved in isopropanol, the most again with nanometer Zn CO3It is combined coupling with aluminum titanium
Agent mixes, and disperses 3h with ultrasound wave, and ultrasonic velocity is 1500m/s, and frequency is 15KHz ~ 10MHz, and wavelength is 0.01 ~
10.00cm, prepares mixing major ingredient after drying and volatilizing isopropanol；Mixing major ingredient is carried out in dehydrator drying and processing, makes moisture
Content is less than 1%；
Step 2. the preparation of mixed accessories: by blowing agent AC and foaming agent NaHCO3Grind after mixing and cross 80 mesh sieves, preparing multiple
Close foaming agent；Then composite foamable agent, Kaolin, stearic acid are put in high-speed mixer together and mixed after mix homogeneously
Adjuvant；
Step 3. banburying: by natural rubber under the conditions of 50 DEG C ~ 60 DEG C mixing with zinc oxide 40 ~ 50 seconds, be subsequently adding mixing main
Expecting mixing 60 ~ 70 seconds, adding mixed accessories and temperature rises to 160 DEG C ~ 180 DEG C, mixing time is 7 ~ 8 minutes, park 12 ~
Slice after 24 hours, prepares expandable sheet material；
Step 4. sulfuration: expandable sheet material is carried out on vulcanizing press moulded from foam molding, curing temperature be 160 DEG C extremely
170 DEG C, molding pressure 1MPa, pressure-maintaining and heat-preservation 3 ~ 5 minutes, prepare polyethylene composite foam material.
Through constantly research and experiment, the connection between theory and practice, technical scheme has broken through following technology
Difficulty:
1. this foamed materials, by natural rubber and the blended and use of polyethylene, mutually makes up in performance, thus possesses good
Combination property；
2. employ nanometer Zn CO3, to polythene material activeness and quietness.Nanometer Zn CO3Interpenetrate with polyethylene, contact area
Increase, improve both adhesion strengths.
3. use composite foamable agent, by blowing agent AC and foaming agent NaHCO3Reasonably combined, be processed as 160 DEG C ~
When 180 DEG C, remain to realize good foaming effect, and avoid the appearance of recovery phenomenon.
4. the reasonable employment of zinc oxide.The interpolation of zinc oxide, can improve the thermal oxidation resistance effect of material, but zinc oxide adds
Dosage is excessive, it will reduces the percentage elongation of material, thus affects foaming effect.Therefore, it is necessary to reasonable employment zinc oxide, including
Determine interpolation opportunity and the addition of zinc oxide, thus between the thermostability and percentage elongation of material, obtain balance.Due to this
The processing temperature of technical scheme is relatively low, so that the usage amount of zinc oxide is greatly reduced.From original about 15 parts, fall
Low is 2 ~ 5 parts, thus ensure that the foaming effect of material.
The most kaolinic reasonable employment.Kaolin changes natural rubber and the rheological property of polyethylene, makes both have very
Good viscosity, in order to ensure polyethylene and nanometer Zn CO3No longer reunite after being uniformly dispersed.Meanwhile, Kaolin becomes foam core,
Theoretical according to foaming, reduce the potential energy at foaming initial stage, substantially increase the gas release at foaming initial stage, thus enhance material
The foaming effect of material.
6. have employed one-step melting method, be provided with rational step and mixing parameter, spread sufficient premise at composition
Under, save mixing time.Mixing speed, relative to the two mixing methods of step, can promote more than 60%.
Detailed description of the invention
Below the present invention is described in further detail.
A kind of polyethylene composite foam material, is made up of the raw material of following weight part ratio:
Natural rubber, 100 parts；
Polyethylene, 150 ~ 210 parts；
Nanometer Zn CO3, 150 ~ 210 parts；
Blowing agent AC, 1.5 ~ 3 parts；
Foaming agent NaHCO3, 0.7 ~ 1.5 part；
Stearic acid, 1.5 ~ 3 parts；
OxidationZinc, 2 ~ 5 parts；
Aluminium titanium composite coupler, 0.5 ~ 2 part；
Kaolin, 10 ~ 24 parts.
Natural rubber, high comprehensive performance, there is higher elasticity and flexural property.Commercial, such as: Hainan natural rubber
The SCR-5 that limited company of industrial group produces.
Polyethylene is a kind of thermoplastic material, has chemical-resistance and the electrical insulation capability of excellence, is widely used for
Preparation carries or holds pipeline and the wire cable insulating layer etc. of chemicals.As preferably, described polyethylene is that high density is gathered
Ethylene HDPE, melt index is 0.01 ~ 0.5g/10min.
Nanometer Zn CO3Specific surface area be 20m2/ g, particle diameter is 50 ~ 70nm.The appearance of nano material and develop into polyethylene
Modification provide a new path, have experiment to show, the addition of nano material, can be to polythene material activeness and quietness.But
Being that undressed nano material is easily agglomerated into bigger granule, dispersion effect in polythene material is the most bad, interface
Adhesion strength is low, it is impossible to be effectively improved the performance of polythene material.The addition of coupling agent, although there is a certain degree of reinforcement
The effect of system, but still can not effectively solve the rendezvous problem of nano material.
Blowing agent AC, chemical name: azodicarbonamide, molecular formula: C2H4O2N4, there is decomposition temperature high, decompose prominent
The property sent out is strong, the feature that thermal discharge is big.Blowing agent AC does not decomposes at 160 DEG C, and when 170 DEG C, decomposition rate is little, along with the rising of temperature
(>=180 DEG C), decomposition rate significantly improves, decompose induction period effectively shorten, decompose sudden by force.But when processing temperature is higher
Time, recovery phenomenon, alone blowing agent AC easily occur, the preparation of this foamed materials should not be directly applied for.
Foaming agent NaHCO3, there is safety, endothermic decomposition, feature that nucleating effect is good.Foaming agent NaHCO3Open at 115 DEG C
Beginning to decompose, heat decomposition temperature is relatively low, and along with temperature raises, decomposition tends towards stability, and decomposition rate is more slow, and 190 DEG C have been decomposed
Finish.AC and NaHCO3Share, form composite foamable agent, improve blowing agent AC gas forming amount at relatively low temperature, thus
Meet the preparation technology preparing this expanded material.
Zinc oxide, uses as stabilizer.
Aluminium titanium composite coupler, commercial.
Kaolin, is commonly called as white clay, and its structure is Al2O3(SiO2)2H2O, plasticity and associativity are strong, and good insulating is fire-resistant
Degree height, its granular size, its plasticity, ion exchange capacity, processability, drying property are all had a significant impact.
The preparation method of a kind of polyethylene composite foam material, comprises the following steps:
Step one. the preparation of mixing major ingredient: polyethylene is dissolved in isopropanol, the most again with nanometer Zn CO3It is combined coupling with aluminum titanium
Agent mixes, and disperses 3h with ultrasound wave, and ultrasonic velocity is 1500m/s, and frequency is 15KHz ~ 10MHz, and wavelength is 0.01 ~
10.00cm, prepares mixing major ingredient after drying and volatilizing isopropanol；Mixing major ingredient is carried out in dehydrator drying and processing, makes moisture
Content is less than 1%；
Nanometer Zn CO3As a kind of inorganic filler, the character of particle surface is hydrophilic oleophobic, is difficult in the polymer uniformly divide
Dissipate, and and polymeric matrix between interface bond strength low.After coupling agent treatment, nanometer Zn CO3And between polyethylene
There is certain bond strength.Further, after ultrasonic, nanometer Zn CO3Interpenetrating with polyethylene, contact area increases, and carries
Both adhesion strengths are risen.
Step 2. the preparation of mixed accessories: by blowing agent AC and foaming agent NaHCO3Grind and cross 80 mesh sieves, system after mixing
Obtain composite foamable agent；Then composite foamable agent, Kaolin, stearic acid are put in high-speed mixer together and obtain after mix homogeneously
Mixed accessories；
Kaolin, is adding the Kaolin of 1.0u granularity, in order to change natural rubber and polyethylene to founding property of the technical program
Rheological property, make both have good viscosity, in order to ensure polyethylene and nanometer Zn CO3No longer reunite after being uniformly dispersed.
Meanwhile, Kaolin further increases the bubble property of this material.Kaolin decompose produce Al and Si ion pair its
Its ion has polarization, adds the shrinkage factor of polyethylene, improves plasticity and the viscosity of composite, thus improves material
The bubble property of material.
Step 3. banburying: by natural rubber under the conditions of 50 DEG C ~ 60 DEG C mixing with zinc oxide 40 ~ 50 seconds, be subsequently adding mixed
Closing major ingredient mixing 60 ~ 70 seconds, add mixed accessories and temperature rises to 160 DEG C ~ 180 DEG C, mixing time is 7 ~ 8 minutes, stops
Put slice after 12 ~ 24 hours, prepare expandable sheet material；
Step 4. sulfuration: expandable sheet material is carried out on vulcanizing press moulded from foam molding, curing temperature be 160 DEG C extremely
170 DEG C, molding pressure 1MPa, pressure-maintaining and heat-preservation 3 ~ 5 minutes, prepare polyethylene composite foam material.
This programme have employed one-step melting method.One-step melting method is relative to the two mixing methods of step, and mixing time is short, and efficiency is high,
But the defect that composition dispersion is uneven easily occurs.The technical program uses one-step melting method, and determines one reasonably
Mixing order, mixing time and melting temperature, it is ensured that the scattered uniformity of composition.
This expanded material, cell density is 8.9 × 109~10.3×109Individual/cm3, relative to the cell density of commercial material
4~5×109Individual/cm3, improve about about one times.
This expanded material, porosity is 92 ~ 93%, relative to the porosity 75% of commercial material, improves about 22.6%.
This expanded material, density is 0.22g/cm3, the density of commercial material is about 0.35g/cm3。
This expanded material, pore is fine and closely woven, uniform, and rate of closed hole is high, has preferable comprehensive mechanical property, and elastic modelling quantity is about etc.
In 550MPa, bending strength >=78MPa, processing characteristics is good.
The present invention is illustrated according to embodiment, on the premise of without departing from present principles, if this device can also be made
Dry deformation and improvement.It should be pointed out that, the technical scheme that the modes such as all employing equivalents or equivalent transformation are obtained, all fall within this
In the protection domain of invention.
Claims (4)
1. a polyethylene composite foam material, it is characterised in that be made up of the raw material of following weight part ratio:
Natural rubber, 100 parts；
Polyethylene, 150 ~ 210 parts；
Nanometer Zn CO3, 150 ~ 210 parts；
Blowing agent AC, 1.5 ~ 3 parts；
Foaming agent NaHCO3, 0.7 ~ 1.5 part；
Stearic acid, 1.5 ~ 3 parts；
OxidationZinc, 2 ~ 5 parts；
Aluminium titanium composite coupler, 0.5 ~ 2 part；
Kaolin, 10 ~ 24 parts.
2. a kind of polyethylene composite foam material as claimed in claim 1, it is characterised in that described polyethylene is that high density is gathered
Ethylene HDPE, melt index is 0.01 ~ 0.5g/10min.
3. a kind of polyethylene composite foam material as claimed in claim 1, it is characterised in that described Kaolin granularity is
1.0u。
4. the preparation method of a polyethylene composite foam material as claimed in claim 1, it is characterised in that include following step
Rapid:
Step one. the preparation of mixing major ingredient: polyethylene is dissolved in isopropanol, the most again with nanometer Zn CO3And aluminium titanium composite coupler
Mixing, and disperses 3h with ultrasound wave, and ultrasonic velocity is 1500m/s, and frequency is 15KHz ~ 10MHz, and wavelength is 0.01 ~
10.00cm, prepares mixing major ingredient after drying and volatilizing isopropanol；Mixing major ingredient is carried out in dehydrator drying and processing, makes moisture
Content is less than 1%；
Step 2. the preparation of mixed accessories: by blowing agent AC and foaming agent NaHCO3Grind after mixing and cross 80 mesh sieves, preparing multiple
Close foaming agent；Then composite foamable agent, Kaolin, stearic acid are put in high-speed mixer together and mixed after mix homogeneously
Adjuvant；
Step 3. banburying: by natural rubber under the conditions of 50 DEG C ~ 60 DEG C mixing with zinc oxide 40 ~ 50 seconds, be subsequently adding mixing main
Expecting mixing 60 ~ 70 seconds, adding mixed accessories and temperature rises to 160 DEG C ~ 180 DEG C, mixing time is 7 ~ 8 minutes, park 12 ~
Slice after 24 hours, prepares expandable sheet material；
Step 4. sulfuration: expandable sheet material is carried out on vulcanizing press moulded from foam molding, curing temperature be 160 DEG C extremely
170 DEG C, molding pressure 1MPa, pressure-maintaining and heat-preservation 3 ~ 5 minutes, prepare polyethylene composite foam material.
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| CN106832593A (en) * | 2017-03-12 | 2017-06-13 | 广西丰达三维科技有限公司 | A kind of printing consumables and preparation method thereof |
| CN106867147A (en) * | 2017-03-12 | 2017-06-20 | 广西丰达三维科技有限公司 | A kind of foamed material and its application |
| CN106893179A (en) * | 2017-03-12 | 2017-06-27 | 广西丰达三维科技有限公司 | A kind of sound insulation type material, preparation method and applications |
| CN106893165A (en) * | 2017-03-12 | 2017-06-27 | 广西丰达三维科技有限公司 | A kind of environment-friendly type macromolecule foamed material |
| CN111087700A (en) * | 2020-01-19 | 2020-05-01 | 赢胜节能集团有限公司 | Mute heat-insulation slow-resilience rubber and plastic and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106832593A (en) * | 2017-03-12 | 2017-06-13 | 广西丰达三维科技有限公司 | A kind of printing consumables and preparation method thereof |
| CN106867147A (en) * | 2017-03-12 | 2017-06-20 | 广西丰达三维科技有限公司 | A kind of foamed material and its application |
| CN106893179A (en) * | 2017-03-12 | 2017-06-27 | 广西丰达三维科技有限公司 | A kind of sound insulation type material, preparation method and applications |
| CN106893165A (en) * | 2017-03-12 | 2017-06-27 | 广西丰达三维科技有限公司 | A kind of environment-friendly type macromolecule foamed material |
| CN111087700A (en) * | 2020-01-19 | 2020-05-01 | 赢胜节能集团有限公司 | Mute heat-insulation slow-resilience rubber and plastic and preparation method thereof |
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