CN112280192A - Polypropylene composite material with low linear expansion coefficient and preparation method thereof - Google Patents
Polypropylene composite material with low linear expansion coefficient and preparation method thereof Download PDFInfo
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- -1 Polypropylene Polymers 0.000 title claims abstract description 68
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 68
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 66
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 24
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 22
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 22
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 7
- 239000011256 inorganic filler Substances 0.000 claims abstract description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 7
- 150000002978 peroxides Chemical class 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000012745 toughening agent Substances 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 15
- 238000005469 granulation Methods 0.000 claims description 15
- 230000003179 granulation Effects 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 229920001903 high density polyethylene Polymers 0.000 claims description 14
- 239000004700 high-density polyethylene Substances 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 9
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims 1
- 239000004707 linear low-density polyethylene Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 229920005606 polypropylene copolymer Polymers 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 238000011056 performance test Methods 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- 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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
-
- 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
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- 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
- C08J2423/02—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
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polypropylene composite material with a low linear expansion coefficient, which comprises the following raw materials in parts by weight: 45-95 parts of polypropylene, 2-10 parts of crosslinked polyethylene master batch, 0-30 parts of inorganic filler, 2-15 parts of toughening agent and 0.5-2 parts of other auxiliary agents; wherein the crosslinked polyethylene master batch comprises the following raw materials in parts by weight: 95-99 parts of polyethylene, 0.1-1 part of peroxide initiator, 1-5 parts of compatilizer and 0.1-1 part of other auxiliary agents. The polypropylene composite material disclosed by the invention not only has a lower linear expansion coefficient, but also has excellent mechanical properties.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a polypropylene composite material with a low linear expansion coefficient and a preparation method thereof.
Background
Polypropylene (PP) is a general-purpose plastic with wide application, is prepared by polymerizing propylene monomers, and is widely applied to various fields due to the advantages of light weight, good chemical stability, easy processing and forming, better mechanical property, no water absorption, chemical corrosion resistance, low comprehensive cost and the like. In many daily life fields, the polypropylene material can be further improved in a targeted manner according to the use environment and requirements of parts, so that the comprehensive mechanical property of the polypropylene material is improved, and the specific modes comprise modification such as filling and compounding.
However, the great difficulty of the filling modified polypropylene at present is how to reduce the linear expansion coefficient of the material, and in many areas, the environmental temperature is greatly changed along with the change of four seasons, and the linear expansion coefficient of the material is high or low, so that the size stability of a product is determined; especially in some special fields, such as automobile back door outer plates, front cabin cover plate outer plates and the like, the basic mechanical properties of the materials can meet the use requirements through modification, but because the outer plate materials are used after being glued with the inner plate materials (LFT-PP), the linear expansion coefficients of the two materials are required to be matched, otherwise, the inner plate materials and the outer plate materials are separated due to gluing failure along with the change of the environmental temperature. Therefore, it is necessary to find a polypropylene composite material with a low linear expansion coefficient.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a polypropylene composite material with a low linear expansion coefficient and a preparation method thereof.
The invention provides a polypropylene composite material with a low linear expansion coefficient, which comprises the following raw materials in parts by weight: 45-95 parts of polypropylene, 2-10 parts of crosslinked polyethylene master batch, 0-30 parts of inorganic filler, 2-15 parts of toughening agent and 0.5-2 parts of other auxiliary agents.
Preferably, the preparation method of the crosslinked polyethylene master batch comprises the following steps: and uniformly mixing the polyethylene, the peroxide initiator, the compatilizer and other auxiliaries, and performing extrusion granulation to obtain the polyethylene-modified polypropylene composite material.
Preferably, the crosslinked polyethylene master batch comprises the following raw materials in parts by weight: 95-99 parts of polyethylene, 0.1-1 part of peroxide initiator, 1-5 parts of compatilizer and 0.1-1 part of other auxiliary agents.
Preferably, the polyethylene is at least one of High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), Linear Low Density Polyethylene (LLDPE); the peroxide initiator is at least one of dicumyl peroxide (DCP), di-tert-butyl peroxide (DTBP) and tert-butyl peroxybenzoate (TPB).
Preferably, the polypropylene is copolymerized polypropylene, and the melt flow rate of the copolymerized polypropylene is 5-100 g/10min under the conditions of 2.16kg and 230 ℃.
Preferably, the inorganic filler is at least one of talcum powder, calcium titanate, barium sulfate and mica; the toughening agent is at least one of POE, EPDM and SEBS; the compatilizer is PP grafted maleic anhydride (PP-g-MAH), POE grafted maleic anhydride (POE-g-MAH) or a combination thereof.
Preferably, the other auxiliary agent is at least one of an antioxidant, a lubricant, a UV resistant agent and a pigment.
A preparation method of the polypropylene composite material with the low linear expansion coefficient comprises the following steps: weighing the polypropylene, the crosslinked polyethylene master batch, the inorganic filler, the toughening agent and other auxiliaries according to the parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene/crosslinked polyethylene composite material.
The invention has the following beneficial effects:
according to the invention, the crosslinked polyethylene master batch and the polypropylene are compounded, so that the prepared polypropylene composite material has a low linear expansion coefficient, a simple treatment process and excellent processing performance.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
In the following examples and comparative examples, the raw materials used were as follows:
the polypropylene copolymer is prepared by mixing polypropylene copolymer, wherein the polypropylene copolymer is M60RHC, the manufacturer is Zhenhai refining, 2.16kg, and the melt flow rate is 60g/10min at 230 ℃;
the copolymerized polypropylene is provided with the mark of K9026, the manufacturer is Yanshan petrochemical, 2.16kg, and the melt flow rate is 26g/10min at 230 ℃;
talcum powder with AHCP250, produced by Liaoning ai Hai;
POE, 8730L, Korea SK;
SEBS with the trade name of YH-501, manufactured by Yueyang petrochemical company;
PP-g-MAH, CA100, manufacturer Achima;
POE-g-MAH with the brand number NG7002, and Shanghai Zeming;
HDPE, trade name DMDA8008, manufacturer Lanzhou petrochemical;
the other materials are all conventional products sold in the market.
Example 1
Preparing a crosslinked polyethylene master batch:
according to the weight portion, 95 portions of high density polyethylene, 0.1 portion of DCP, 5 portions of PP-g-MAH, 0.3 portion of antioxidant and 0.2 portion of lubricant are evenly mixed, and the mixture is obtained after extrusion and granulation.
Preparing a polypropylene composite material:
weighing 95 parts of polypropylene copolymer M60RHC, 2 parts of crosslinked polyethylene master batch, 2 parts of POE, 0.3 part of antioxidant and 0.2 part of lubricant, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene/polyethylene composite material.
Example 2
Preparing a crosslinked polyethylene master batch:
according to the weight portion, 97 portions of high density polyethylene, 0.4 portion of DTBP, 3 portions of POE-g-MAH, 0.3 portion of antioxidant and 0.2 portion of lubricant are evenly mixed, and the mixture is obtained through extrusion and granulation.
Preparing a polypropylene composite material:
weighing 64 parts of copolymerized polypropylene M60RHC, 20 parts of copolymerized polypropylene K9026, 5 parts of crosslinked polyethylene master batch, 10 parts of talcum powder, 5 parts of SEBS, 0.3 part of antioxidant, 0.2 part of lubricant and 0.5 part of anti-UV agent according to parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the modified polypropylene.
Example 3
Preparing a crosslinked polyethylene master batch:
according to the weight portion, 98 portions of high density polyethylene, 0.7 portion of TPB, 2 portions of PP-g-MAH, 0.3 portion of antioxidant and 0.2 portion of lubricant are evenly mixed, and the mixture is obtained through extrusion granulation.
Preparing a polypropylene composite material:
weighing 40 parts of polypropylene copolymer M60RHC, 20 parts of polypropylene copolymer K9026, 8 parts of crosslinked polyethylene master batch, 20 parts of talcum powder, 10 parts of POE, 0.3 part of antioxidant, 0.2 part of lubricant, 0.5 part of anti-UV agent and 1 part of black master batch, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the composite material.
Example 4
Preparing a crosslinked polyethylene master batch:
according to the weight portion, 99 portions of high density polyethylene, 1 portion of DCP, 1 portion of POE-g-MAH, 0.3 portion of antioxidant and 0.2 portion of lubricant are uniformly mixed, and the mixture is extruded and granulated to obtain the high density polyethylene.
Preparing a polypropylene composite material:
weighing 40 parts of copolymerized polypropylene M60RHC, 5 parts of copolymerized polypropylene K9026, 10 parts of crosslinked polyethylene master batch, 30 parts of talcum powder, 10 parts of POE, 5 parts of SEBS, 0.3 part of antioxidant, 0.2 part of lubricant and 0.5 part of black master batch, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the product.
Comparative example 1
Preparing a polypropylene composite material:
weighing 95 parts of polypropylene copolymer M60RHC, 2 parts of high-density polyethylene, 2 parts of POE, 0.3 part of antioxidant and 0.2 part of lubricant according to parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene/polypropylene composite material.
Comparative example 2
Preparing a polypropylene composite material:
weighing 64 parts of copolymerized polypropylene M60RHC, 20 parts of copolymerized polypropylene K9026, 5 parts of high-density polyethylene, 10 parts of talcum powder, 5 parts of SEBS, 0.3 part of antioxidant, 0.2 part of lubricant and 0.5 part of anti-UV agent according to parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the high-density polyethylene.
Comparative example 3
Preparing a polypropylene composite material:
weighing 40 parts of polypropylene copolymer M60RHC, 20 parts of polypropylene copolymer K9026, 8 parts of high-density polyethylene, 20 parts of talcum powder, 10 parts of POE, 0.3 part of antioxidant, 0.2 part of lubricant, 0.5 part of anti-UV agent and 1 part of black master batch according to parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene/polypropylene composite material.
Comparative example 4
Preparing a polypropylene composite material:
weighing 40 parts of polypropylene copolymer M60RHC, 5 parts of polypropylene copolymer K9026, 10 parts of high-density polyethylene, 30 parts of talcum powder, 10 parts of POE, 5 parts of SEBS, 0.3 part of antioxidant, 0.2 part of lubricant and 0.5 part of black master batch, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene composite material.
The specific formulations of the above examples 1 to 4 and comparative examples 1 to 4 are shown in Table 1:
TABLE 1 specific formulations of examples 1-4 and comparative examples 1-4
The polypropylene composites of examples 1 to 4 and comparative examples 1 to 4 were subjected to the performance test under the conditions and standards shown in Table 2:
TABLE 2 Polypropylene composite Performance test conditions and standards
The test results are shown in table 3:
TABLE 3 Polypropylene composite Performance test results
Therefore, the polypropylene composite material prepared by compounding the crosslinked polyethylene master batch and the polypropylene has a lower linear expansion coefficient and excellent comprehensive mechanical properties under the condition of the same formula system.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The polypropylene composite material with the low linear expansion coefficient is characterized by comprising the following raw materials in parts by weight: 45-95 parts of polypropylene, 2-10 parts of crosslinked polyethylene master batch, 0-30 parts of inorganic filler, 2-15 parts of toughening agent and 0.5-2 parts of other auxiliary agents.
2. The polypropylene composite material with low linear expansion coefficient as claimed in claim 1, wherein the preparation method of the crosslinked polyethylene masterbatch comprises the following steps: and uniformly mixing the polyethylene, the peroxide initiator, the compatilizer and other auxiliaries, and performing extrusion granulation to obtain the polyethylene-modified polypropylene composite material.
3. The polypropylene composite material with the low linear expansion coefficient as claimed in claim 1 or 2, wherein the crosslinked polyethylene masterbatch comprises the following raw materials in parts by weight: 95-99 parts of polyethylene, 0.1-1 part of peroxide initiator, 1-5 parts of compatilizer and 0.1-1 part of other auxiliary agents.
4. The low linear expansion coefficient polypropylene composite according to claim 2 or 3, wherein the polyethylene is at least one of high density polyethylene, low density polyethylene, linear low density polyethylene; the peroxide initiator is at least one of dicumyl peroxide, di-tert-butyl peroxide and tert-butyl peroxybenzoate.
5. The polypropylene composite material with low linear expansion coefficient as claimed in any one of claims 1 to 4, wherein the polypropylene is a co-polypropylene having a melt flow rate of 5 to 100g/10min at 230 ℃ under 2.16 kg.
6. The polypropylene composite material with low linear expansion coefficient as claimed in any one of claims 1 to 5, wherein the inorganic filler is at least one of talc powder, calcium titanate, barium sulfate and mica; the toughening agent is at least one of POE, EPDM and SEBS; the compatilizer is PP grafted maleic anhydride, POE grafted maleic anhydride or a combination thereof.
7. The polypropylene composite material with low linear expansion coefficient as claimed in any one of claims 1 to 6, wherein the other auxiliary agent is at least one of an antioxidant, a lubricant, a UV resistant agent and a pigment.
8. A method for preparing the polypropylene composite material with low linear expansion coefficient according to any one of claims 1 to 7, comprising the following steps: weighing the polypropylene, the crosslinked polyethylene master batch, the inorganic filler, the toughening agent and other auxiliaries according to the parts by weight, uniformly mixing, adding into an extruder, and carrying out melting, extrusion, granulation, cooling and drying to obtain the polypropylene/crosslinked polyethylene composite material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115725138A (en) * | 2021-08-27 | 2023-03-03 | 合肥杰事杰新材料股份有限公司 | Weather-resistant polypropylene composite material and preparation method thereof |
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| CN105504500A (en) * | 2015-12-30 | 2016-04-20 | 上海普利特复合材料股份有限公司 | Creep-resistance polypropylene composite material and preparation method thereof |
| CN108623899A (en) * | 2017-03-26 | 2018-10-09 | 合肥杰事杰新材料股份有限公司 | A kind of PP composite material matt master and preparation method thereof |
| CN109251407A (en) * | 2017-07-10 | 2019-01-22 | 合肥杰事杰新材料股份有限公司 | A kind of low-luster polypropylene composite material and preparation method thereof |
| CN109575427A (en) * | 2017-09-29 | 2019-04-05 | 合肥杰事杰新材料股份有限公司 | A kind of low-luster polypropylene composite material and preparation method thereof |
| CN110951152A (en) * | 2019-12-17 | 2020-04-03 | 广东圆融新材料有限公司 | Polypropylene composite material for low-gloss and good-appearance automotive interior and preparation method thereof |
| CN111117074A (en) * | 2019-12-17 | 2020-05-08 | 会通新材料股份有限公司 | Low-gloss crosslinked polypropylene composite material and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115725138A (en) * | 2021-08-27 | 2023-03-03 | 合肥杰事杰新材料股份有限公司 | Weather-resistant polypropylene composite material and preparation method thereof |
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Application publication date: 20210129 |