CN114044979A - High-cohesiveness polypropylene composite material and preparation method thereof - Google Patents
High-cohesiveness polypropylene composite material and preparation method thereof Download PDFInfo
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- CN114044979A CN114044979A CN202111364834.7A CN202111364834A CN114044979A CN 114044979 A CN114044979 A CN 114044979A CN 202111364834 A CN202111364834 A CN 202111364834A CN 114044979 A CN114044979 A CN 114044979A
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- polypropylene
- polypropylene composite
- composite material
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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
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention discloses a high-cohesiveness polypropylene composite material which is prepared from the following components in percentage by mass: 67-72% of polypropylene, 5-10% of inorganic filler, 3-5% of compatibilizer, 3-5% of modified polyamide, 5-10% of tackifying resin, 1.5-2% of epoxy resin, 1% of processing aid and the balance of elastomer. The modified polypropylene material obtained by the method has high adhesive property with metal materials, does not need to carry out complex surface pretreatment on the metal, such as sand blasting, etching, electroplating and the like, and widens the application range of the high-adhesive polypropylene material; the modified polypropylene material obtained in the invention has balanced physical and mechanical properties, and can be suitable for different processing technologies, such as extrusion molding, injection molding, spray molding and the like.
Description
Technical Field
The invention relates to the field of polymer modification and material processing, in particular to a high-cohesiveness polypropylene composite material and a preparation method thereof.
Background
Polypropylene resin (PP for short) has excellent physical and mechanical properties, light weight, low cost and wide raw material sources, and is widely used in various industries. Due to the molecular chain characteristics of the polypropylene resin, the polypropylene resin has lower surface energy and polarity, is difficult to be effectively bonded with metal framework materials such as steel, aluminum, copper and the like, and limits the application of the polypropylene material in the aspects of automobiles, household appliances, buildings, energy sources and the like.
Disclosure of Invention
In view of the above, the present invention provides a high-adhesion polypropylene composite material and a preparation method thereof, so as to solve the problems in the background art, and improve the adhesion between the polypropylene composite material and a metal material without affecting the mechanical properties of the composite material.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses a high-cohesiveness polypropylene composite material which is prepared from the following components in percentage by mass:
as a further scheme of the invention: the polypropylene is high-crystalline copolymerized polypropylene resin, and the melt flow rate of the polypropylene is 5-100g/10min under the test conditions that the temperature is 230 ℃ and the load is 2.16 kg.
As a further scheme of the invention: the inorganic filler is at least one of talcum powder, calcium carbonate, mica powder, wollastonite and kaolin.
As a further scheme of the invention: the compatibilizer is at least one of maleic anhydride graft, maleic anhydride and acrylate.
As a further scheme of the invention: the modified polyamide is at least one of dimer acid type polyamide, fatty acid dimer, organic amine and polyimide.
As a further scheme of the invention: the tackifying resin comprises at least one of amorphous polypropylene, amorphous poly-alpha-olefin and petroleum resin.
As a further scheme of the invention: the processing aid comprises peroxide, an antioxidant, a light stabilizer, an acid absorbent and a dispersing agent.
As a further scheme of the invention: the elastomer is at least one of styrene-butadiene-styrene triblock copolymer, hydrogenated styrene-butadiene-styrene triblock copolymer, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer rubber and thermoplastic polyolefin elastomer.
The invention also discloses a preparation method of the high-cohesiveness polypropylene composite material, which comprises the following steps:
weighing all the components according to the mass percentage, and putting the components into a high-speed mixing pot for mixing for 3-5min to obtain a uniformly mixed premix;
and adding the premix into a co-rotating meshed double-screw extruder for plasticizing, blending, distributing, cooling, drying and granulating to obtain the high-cohesiveness polypropylene composite material.
As a further scheme of the invention: the temperature of each zone of the double-screw extruder is 200-220 ℃, the rotating speed of the screw is 500-600r/min, and the vacuum degree is more than 0.08 MPa.
Compared with the prior art, the invention has the beneficial effects that:
the modified polypropylene material obtained by the method has high adhesive property with metal materials, does not need to carry out complex surface pretreatment on the metal, such as sand blasting, etching, electroplating and the like, and widens the application range of the high-adhesive polypropylene material; the modified polypropylene material obtained in the invention has balanced physical and mechanical properties, and can be suitable for different processing technologies, such as extrusion molding, injection molding, spray molding and the like.
Polar groups on the molecular chain of the epoxy resin can increase the wettability of the metal surface of the modified polypropylene resin, and further a firm interface layer is formed between the polypropylene resin and the metal material. The elastomer on the one hand regulates the properties of the polypropylene matrix and on the other hand together with the compatibilizer improves the compatibility between the components in the polypropylene matrix. The tackifying resin, the epoxy resin and the modified polyamide have a synergistic effect and jointly promote the adhesive property of the modified polypropylene material metal material.
The purpose of compounding and using several different polypropylene resins is to balance the performance of the finally obtained polypropylene composite material, so that the polypropylene composite material can meet the requirements of adhesion with different metal materials and use under different conditions. Specifically, different application occasions have different requirements on the performance of the composite material, on one hand, if the product is extruded, lower fluidity is needed, and if the product is injection molded, higher fluidity is needed; on the other hand, aiming at different requirements of products on material performance, the composite material meeting different standard requirements can be obtained by adjusting the compounding ratio of the polypropylene resin.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following examples and comparative examples employ the following raw material specific information:
polypropylene resin 1: BX3900 (SK group, korea), polypropylene resin 2: BX3920 (SK group of korea), polypropylene resin 3: SP179 (oleanolide);
elastomer 1: POE XUS58750 (dow chemical group, usa), elastomer 2: EPDM 3112PM (mitsui chemistry);
the inorganic filler is talc powder, HTPultra5L (IMIFABI);
compatibilizer 1: polypropylene grafted maleic anhydride CA100 (arkema, france), compatibilizer 2: POE-g-MAH Hs2-002A (Guangdong Hecheng chemical);
modified polyamide, dimer acid type polyamide, 6239 (Shanghai Han Gaokang Co., Ltd.);
tackifying resin 1: c5 petroleum resin (reck chemical limited), tackifying resin 2: coumarone resin (ruike chemical limited);
the epoxy resin is epoxy resin, B203 (Nicoti Engelsa chemical technology Co., Ltd.);
the processing aid comprises:
peroxide, dicyclohexyl peroxydicarbonate, DCPD (Shanghainemei New Material science & technology Co., Ltd.), antioxidant 1010 (Pasteur Co., Ltd.),
Antioxidant 168 (BASF corporation),
Light stabilizers 3808PP5 (Cyanid Special chemical),
The acid-absorbing agent is calcium stearate, G120 (Anhui Shafeng new material Co., Ltd.),
Dispersant for polyolefins, TR451 (dow corning);
all materials are conventional and common products sold in the market.
It is understood that the above raw material reagents are only examples of some specific embodiments of the present invention, so as to make the technical scheme of the present invention more clear, and do not represent that the present invention can only adopt the above reagents, particularly, the scope of the claims is subject to. In addition, "parts" described in examples and comparative examples mean parts by weight unless otherwise specified.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
The following examples and comparative examples were prepared as follows:
(1) weighing all the components according to the mass percentage, and putting the components into a high-speed mixing pot for mixing for 3-5min to obtain a uniformly mixed premix;
(2) and adding the premix into a co-rotating meshed double-screw extruder for plasticizing, blending, distributing, cooling, drying and granulating to obtain the high-cohesiveness polypropylene composite material.
Wherein the basic temperature beta of the double-screw extruder is 200-220 ℃, the screw rotating speed is 500-600r/min, and the vacuum degree is 0.08 MPa. The amounts of each component added are shown in table 1.
TABLE 1 ingredient ratios used in examples and comparative examples
The performance test and test conditions of the modified polypropylene materials prepared in the above examples and comparative examples are as follows: the density of the material is tested according to the ISO 1183-1 standard, the testing condition is 23 ℃, and an alcohol density tester is used; the tensile strength is tested according to ISO527-2 standard, the shape of the sample strip is a dumbbell type sample strip, wherein the testing speed is 50 mm/min; the bending strength and the bending modulus are tested according to ISO 178 standard, wherein the testing speed is 2mm/min, the shape of the sample strip is a cuboid sample strip, and the size of the sample strip is 80mm multiplied by 10mm multiplied by 4 mm; testing the notch impact of the cantilever beam according to ISO 180 standard, wherein the notch depth is 2mm, the sample strip is a cuboid sample strip, and the size of the sample strip is 80mm multiplied by 10mm multiplied by 4 mm; the melt index is measured according to ISO 1133-1/2 standard, the test condition is 230 ℃, 2.16 kg; the peel strength between the modified polypropylene material and the framework material is tested according to the ISO8510-2-2006 standard, and the testing speed is 100 mm/min.
The properties of the products of examples 1 to 4 and comparative examples 1 to 2 are shown in Table 2.
TABLE 2 mechanical Properties and odor test results of the products
According to the data in table 2, it can be seen that the adhesion between the polypropylene material and the metal material (steel, aluminum) is effectively improved and the comprehensive properties of the material are not affected after the tackifying resin, the modified polyamide, the elastomer and the compatibilizer are added into the modified polypropylene material. The modified polyamide improves the polarity of the polypropylene material, the elastomer and the compatibilizer improve the compatibility of each component in the modified polypropylene material, and the tackifying resin improves the interface strength and the wettability of the resin material to the metal material when the modified polypropylene material is bonded with the metal, so that a certain modulus gradient is formed between the modified polypropylene material and the interface and the metal, and the adhesiveness between the modified polypropylene material and the metal is finally improved.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The high-cohesiveness polypropylene composite material is characterized by being prepared from the following components in percentage by mass:
2. a highly adhesive polypropylene composite according to claim 1, wherein the polypropylene is a highly crystalline copolymerized polypropylene resin having a melt flow rate of 5 to 100g/10min under a test condition of a temperature of 230 ℃ and a load of 2.16 kg.
3. A high-adhesion polypropylene composite material as claimed in claim 1, wherein the inorganic filler is at least one of talc, calcium carbonate, mica powder, wollastonite and kaolin.
4. A high adhesion polypropylene composite as claimed in claim 1, wherein the compatibilizer is at least one of maleic anhydride graft, maleic anhydride and acrylate.
5. A high adhesion polypropylene composite according to claim 1, wherein the modified polyamide is at least one of dimer acid type polyamide, dimer fatty acid, organic amine, and polyimide.
6. A high adhesion polypropylene composite as claimed in claim 1, wherein the tackifying resin comprises at least one of amorphous polypropylene, amorphous polyalphaolefin, petroleum resin.
7. A high-adhesion polypropylene composite material as claimed in claim 1, wherein the processing aids include peroxides, antioxidants, light stabilizers, acid scavengers, dispersants.
8. A high-adhesion polypropylene composite according to claim 1, wherein the elastomer is at least one of styrene-butadiene-styrene triblock copolymer, hydrogenated styrene-butadiene-styrene triblock copolymer, polyvinyl acetate, ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, thermoplastic polyolefin elastomer.
9. A method for preparing a high-adhesion polypropylene composite material as claimed in any one of claims 1 to 8, comprising the steps of:
weighing all the components according to the mass percentage, and putting the components into a high-speed mixing pot for mixing for 3-5min to obtain a uniformly mixed premix;
and adding the premix into a co-rotating meshed double-screw extruder for plasticizing, blending, distributing, cooling, drying and granulating to obtain the high-cohesiveness polypropylene composite material.
10. The preparation method as claimed in claim 9, wherein the temperature of each zone of the twin-screw extruder is 200-220 ℃, the screw rotation speed is 500-600r/min, and the vacuum degree is above 0.08 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111364834.7A CN114044979A (en) | 2021-11-17 | 2021-11-17 | High-cohesiveness polypropylene composite material and preparation method thereof |
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| CN202111364834.7A CN114044979A (en) | 2021-11-17 | 2021-11-17 | High-cohesiveness polypropylene composite material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114589900A (en) * | 2022-03-01 | 2022-06-07 | 君海管业(山东)有限公司 | High-adhesion PE (polyethylene) repair lining hose and manufacturing method thereof |
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| CN106795404A (en) * | 2014-10-13 | 2017-05-31 | 波士胶公司 | The hot-melt adhesive based on polyolefin with improved processing and bond properties |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114589900A (en) * | 2022-03-01 | 2022-06-07 | 君海管业(山东)有限公司 | High-adhesion PE (polyethylene) repair lining hose and manufacturing method thereof |
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