CN105694233A - Foamed polypropylene and preparation method thereof - Google Patents
Foamed polypropylene and preparation method thereof Download PDFInfo
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- CN105694233A CN105694233A CN201610238426.XA CN201610238426A CN105694233A CN 105694233 A CN105694233 A CN 105694233A CN 201610238426 A CN201610238426 A CN 201610238426A CN 105694233 A CN105694233 A CN 105694233A
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Abstract
The invention discloses foamed polypropylene. The foamed polypropylene comprises, by weight, 100 parts of polypropylene resin, 10-30 parts of alpha-olefin oligomer, 0.01-10 parts of foaming agent, 10-20 parts of surface-finish inorganic filler, and 1-10 parts of auxiliary. The alpha-olefin oligomer's number-average molecular weight is smaller than 10000, and the auxiliary comprises antioxidant and foaming stabilizer. The preparation method is to add the raw materials at different time, the foamed polypropylene is high in foaming rate, and good in mechanical performance, and the production method is simple and can meet the requirement for weight reduction.
Description
Technical field
The present invention relates to a kind of polypropylene and preparation method thereof, be specifically related to a kind of expanded polypropylene and preparation method thereof, belong to technical field of polymer materials。
Background technology
Expanded polypropylene resin has the strain response rate after more excellent resistance to chemical reagents, thermostability, compression for foamed polystyrene resin, compared with foamed polyvinyl resin, expanded polypropylene has more excellent precision size degree, thermostability, compressive strength, due to above-mentioned excellent properties, the foam molding that expanded polypropylene obtains can be used for the various uses such as adiabator, amortizing packaging material, interior automotive trim parts, bumper core。
Although existing expanded polypropylene or strength of materials excellence, but expansion ratio is low, it is impossible to meet the requirement of material lightweight, there is higher expansion ratio, but material mechanical performance is poor, and contraction, deformation when easily there is making structure becomes big, the problems such as surface quality is poor。
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, it is provided that a kind of expanded polypropylene and preparation method thereof, and this expanded polypropylene expansion ratio is high, mechanical property is good, and production method is simple, it is possible to meet lightweight requirements。
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of expanded polypropylene, mark meter by weight, including following components: acrylic resin 100 parts, alpha-olefin low polymers 10-30 part, foaming agent 0.01-10 part, inorganic filler 10-20 part of finishing, auxiliary agent 1-10 part, described alpha-olefin low polymers is the number-average molecular weight oligomer less than 10000, and described auxiliary agent includes antioxidant, foaming stabilizer。
Preferably, described foaming agent is carbon number is alkane and the hydrogen peroxide mixture of 3-5, and the mass ratio of described alkane and hydrogen peroxide is 1-5:2-6。
Preferably, described polypropylene is atactic copolymerized polypropene, and described atactic copolymerized polypropene has following character:
S1:MFR is 5-15g/10min, and the measurement of described MFR is that 230 DEG C/2.16 kilograms kg weight of condition carry out according to ASTMD-1238。；
S2: based on the total amount of described acrylic resin, xylol soluble constituent amount (CXS) at 25 DEG C is less than 3 weight %；
S3: the intrinsic viscosity [η] measured in decahydronaphthalenes at 135 DEG C is 9-15dl/g；
S4: be 6-20, Mz/Mw by the GPC molecular weight distribution mw/mn measured be 10-30。
Preferably, described alpha-olefin low polymers is propylene oligomer or the rare oligomer of 1-fourth。
Preferably, the inorganic filler of described finishing is the nanoscale inorganic powder of silane coupler surface modification。
Preferably, described foaming stabilizer is methyl glycol fatty acid ester class foaming stabilizer or isooctanol fatty acid ester foaming stabilizer。
A kind of preparation method of above-mentioned expanded polypropylene, including step:
(1) foaming agent is equally divided into by weight two parts, takes a copy of it and acrylic resin, alpha-olefin low polymers mixing and stirring, obtain preliminary compound；
(2) the preliminary compound obtained in step (1) being added extruding pelletization in double screw extruder, each district temperature of double screw extruder is 200-220 DEG C, obtains preliminary product；
(3) adding another part of foaming agent in the preliminary product obtained to step (2) and the inorganic filler of finishing, auxiliary agent together add in double screw extruder again, each district temperature of double screw extruder is 180-200 DEG C, obtains expanded polypropylene。
The beneficial effect that the present invention reaches:
The expanded polypropylene expansion ratio of the present invention is high, abscess-size is uniform, and density of material is little, and material mechanical performance is excellent, this expanded polypropylene the formed body surface quality obtained is excellent, good stability of the dimension。
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of expanded polypropylene in embodiment 1；
Fig. 2 is the stereoscan photograph of expanded polypropylene in embodiment 2。
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described。Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this。
Embodiment 1
Weigh following component by weight: acrylic resin 100 parts, alpha-olefin low polymers 20 parts, foaming agent 0.02 part, the inorganic filler of finishing 10 parts, auxiliary agent 2 parts, alpha-olefin low polymers is the number-average molecular weight oligomer less than 10000, and auxiliary agent includes antioxidant, foaming stabilizer。Foaming stabilizer is methyl glycol fatty acid ester class foaming stabilizer。
Above polypropylene is atactic copolymerized polypropene, and this atactic copolymerized polypropene has following character:
S1:MFR is 5-15g/10min, and the measurement of described MFR is that 230 DEG C/2.16 kilograms kg weight of condition carry out according to ASTMD-1238。；
S2: based on the total amount of described acrylic resin, xylol soluble constituent amount (CXS) at 25 DEG C is less than 3 weight %；
S3: the intrinsic viscosity [η] measured in decahydronaphthalenes at 135 DEG C is 9-15dl/g；
S4: be 6-20, Mz/Mw by the GPC molecular weight distribution mw/mn measured be 10-30。
(1) foaming agent is equally divided into by weight two parts, takes a copy of it and acrylic resin, alpha-olefin low polymers mixing and stirring, obtain preliminary compound；
(2) the preliminary compound obtained in step (1) being added extruding pelletization in double screw extruder, each district temperature of double screw extruder is 200-220 DEG C, obtains preliminary product；
(3) adding another part of foaming agent in the preliminary product obtained to step (2) and the inorganic filler of finishing, auxiliary agent together add in double screw extruder again, each district temperature of double screw extruder is 180-200 DEG C, obtains expanded polypropylene。
The expanded polypropylene material obtained is carried out performance test, and impact strength testing standard is ISO179/2-93, unit K J/m3, expansion ratio is 55, and impact strength is 20KJ/m3。
Embodiment 2
Weigh following component by weight: acrylic resin 100 parts, alpha-olefin low polymers 30 parts, foaming agent 5 parts, the inorganic filler of finishing 15 parts, auxiliary agent 1 part, alpha-olefin low polymers is the number-average molecular weight oligomer less than 10000, and auxiliary agent includes antioxidant, foaming stabilizer。Foaming stabilizer is isooctanol fatty acid ester foaming stabilizer。
(1) foaming agent is equally divided into by weight two parts, takes a copy of it and acrylic resin, alpha-olefin low polymers mixing and stirring, obtain preliminary compound；
(2) the preliminary compound obtained in step (1) being added extruding pelletization in double screw extruder, each district temperature of double screw extruder is 200-220 DEG C, obtains preliminary product；
(3) adding another part of foaming agent in the preliminary product obtained to step (2) and the inorganic filler of finishing, auxiliary agent together add in double screw extruder again, each district temperature of double screw extruder is 180-200 DEG C, obtains expanded polypropylene。
The expanded polypropylene material obtained is carried out performance test, and impact strength testing standard is ISO179/2-93, unit K J/m3, expansion ratio is 50, and impact strength is 25KJ/m3。
Embodiment 3
Weigh following component by weight: acrylic resin 100 parts, alpha-olefin low polymers 10 parts, foaming agent 8 parts, the inorganic filler of finishing 20 parts, auxiliary agent 8 parts, alpha-olefin low polymers is the number-average molecular weight oligomer less than 10000, and auxiliary agent includes antioxidant, foaming stabilizer。
(1) foaming agent is equally divided into by weight two parts, takes a copy of it and acrylic resin, alpha-olefin low polymers mixing and stirring, obtain preliminary compound；
(2) the preliminary compound obtained in step (1) being added extruding pelletization in double screw extruder, each district temperature of double screw extruder is 200-220 DEG C, obtains preliminary product；
(3) adding another part of foaming agent in the preliminary product obtained to step (2) and the inorganic filler of finishing, auxiliary agent together add in double screw extruder again, each district temperature of double screw extruder is 180-200 DEG C, obtains expanded polypropylene。
The expanded polypropylene material obtained is carried out performance test, and impact strength testing standard is ISO179/2-93, unit K J/m3, expansion ratio is 35, and impact strength is 30KJ/m3。
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention。
Claims (7)
1. an expanded polypropylene, it is characterized in that, mark meter by weight, including following components: acrylic resin 100 parts, alpha-olefin low polymers 10-30 part, foaming agent 0.01-10 part, inorganic filler 10-20 part of finishing, auxiliary agent 1-10 part, described alpha-olefin low polymers is the number-average molecular weight oligomer less than 10000, and described auxiliary agent includes antioxidant, foaming stabilizer。
2. a kind of expanded polypropylene according to claim 1, it is characterised in that described foaming agent is carbon number is alkane and the hydrogen peroxide mixture of 3-5, and the mass ratio of described alkane and hydrogen peroxide is 1-5:2-6。
3. a kind of expanded polypropylene according to claim 1, it is characterised in that described polypropylene is atactic copolymerized polypropene, and described atactic copolymerized polypropene has following character:
S1:MFR is 5-15g/10min, and the measurement of described MFR is that 230 DEG C/2.16 kilograms kg weight of condition carry out according to ASTMD-1238；
S2: based on the total amount of described acrylic resin, xylol soluble constituent amount (CXS) at 25 DEG C is less than 3 weight %；
S3: the intrinsic viscosity [η] measured in decahydronaphthalenes at 135 DEG C is 9-15dl/g；
S4: be 6-20, Mz/Mw by the GPC molecular weight distribution mw/mn measured be 10-30。
4. a kind of expanded polypropylene according to any one of claim 1-3, it is characterised in that described alpha-olefin low polymers is propylene oligomer or the rare oligomer of 1-fourth。
5. a kind of expanded polypropylene according to claim 4, it is characterised in that the inorganic filler of described finishing is the nanoscale inorganic powder of silane coupler surface modification。
6. a kind of expanded polypropylene according to claim 1, it is characterised in that described foaming stabilizer is methyl glycol fatty acid ester class foaming stabilizer or isooctanol fatty acid ester foaming stabilizer。
7. the preparation method of expanded polypropylene described in a claim 1 or 2 or 3 or 5 or 6, it is characterised in that include step:
(1) foaming agent is equally divided into by weight two parts, takes a copy of it and acrylic resin, alpha-olefin low polymers mixing and stirring, obtain preliminary compound；
(2) the preliminary compound obtained in step (1) being added extruding pelletization in double screw extruder, each district temperature of double screw extruder is 200-220 DEG C, obtains preliminary product；
(3) adding another part of foaming agent in the preliminary product obtained to step (2) and the inorganic filler of finishing, auxiliary agent together add in double screw extruder again, each district temperature of double screw extruder is 180-200 DEG C, obtains expanded polypropylene。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238426.XA CN105694233A (en) | 2016-04-18 | 2016-04-18 | Foamed polypropylene and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610238426.XA CN105694233A (en) | 2016-04-18 | 2016-04-18 | Foamed polypropylene and preparation method thereof |
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| CN105694233A true CN105694233A (en) | 2016-06-22 |
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| CN201610238426.XA Pending CN105694233A (en) | 2016-04-18 | 2016-04-18 | Foamed polypropylene and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538387A (en) * | 2008-03-17 | 2009-09-23 | 中国科学院宁波材料技术与工程研究所 | Polypropylene foaming material and production method thereof |
| CN104140589A (en) * | 2014-06-19 | 2014-11-12 | 胡圣飞 | Polypropylene foam particle and preparation method thereof |
| CN104169356A (en) * | 2012-02-23 | 2014-11-26 | 日本聚丙烯株式会社 | Polypropylene-based resin composition and foam sheet |
-
2016
- 2016-04-18 CN CN201610238426.XA patent/CN105694233A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538387A (en) * | 2008-03-17 | 2009-09-23 | 中国科学院宁波材料技术与工程研究所 | Polypropylene foaming material and production method thereof |
| CN104169356A (en) * | 2012-02-23 | 2014-11-26 | 日本聚丙烯株式会社 | Polypropylene-based resin composition and foam sheet |
| CN104140589A (en) * | 2014-06-19 | 2014-11-12 | 胡圣飞 | Polypropylene foam particle and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李超等: ""发泡聚丙烯制备与应用研究进展"", 《高分子通报》 * |
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Application publication date: 20160622 |