CN113024737A - Method for compatibilization of polypropylene/polyethylene blend - Google Patents
Method for compatibilization of polypropylene/polyethylene blend Download PDFInfo
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- CN113024737A CN113024737A CN202110371579.2A CN202110371579A CN113024737A CN 113024737 A CN113024737 A CN 113024737A CN 202110371579 A CN202110371579 A CN 202110371579A CN 113024737 A CN113024737 A CN 113024737A
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- polypropylene
- polyethylene
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- zinc
- polyethylene blend
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- -1 polypropylene Polymers 0.000 title claims abstract description 105
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 74
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 73
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 62
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 59
- 239000000203 mixture Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 21
- 150000002978 peroxides Chemical class 0.000 claims abstract description 12
- MBBWTVUFIXOUBE-UHFFFAOYSA-L zinc;dicarbamodithioate Chemical compound [Zn+2].NC([S-])=S.NC([S-])=S MBBWTVUFIXOUBE-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000003999 initiator Substances 0.000 claims abstract description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 13
- 229920001903 high density polyethylene Polymers 0.000 claims description 8
- 239000004700 high-density polyethylene Substances 0.000 claims description 8
- 229920001684 low density polyethylene Polymers 0.000 claims description 6
- 239000004702 low-density polyethylene Substances 0.000 claims description 6
- 239000011159 matrix material 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
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical group C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 5
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 4
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 claims description 4
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 3
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 3
- GOQCSVOOQKFAKT-UHFFFAOYSA-L zinc;n,n-bis(2-methylpropyl)carbamodithioate Chemical compound [Zn+2].CC(C)CN(C([S-])=S)CC(C)C.CC(C)CN(C([S-])=S)CC(C)C GOQCSVOOQKFAKT-UHFFFAOYSA-L 0.000 claims description 3
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 claims description 2
- 125000000962 organic group Chemical group 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- AUMBZPPBWALQRO-UHFFFAOYSA-L zinc;n,n-dibenzylcarbamodithioate Chemical compound [Zn+2].C=1C=CC=CC=1CN(C(=S)[S-])CC1=CC=CC=C1.C=1C=CC=CC=1CN(C(=S)[S-])CC1=CC=CC=C1 AUMBZPPBWALQRO-UHFFFAOYSA-L 0.000 claims description 2
- 150000003254 radicals Chemical class 0.000 abstract description 17
- 238000002156 mixing Methods 0.000 abstract description 16
- 229920005605 branched copolymer Polymers 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000012986 modification Methods 0.000 abstract description 7
- 230000004048 modification Effects 0.000 abstract description 7
- 238000011065 in-situ storage Methods 0.000 abstract description 6
- 238000007086 side reaction Methods 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract description 2
- 238000007348 radical reaction Methods 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 8
- 238000011144 upstream manufacturing Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 102220040412 rs587778307 Human genes 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- HCLJOFJIQIJXHS-UHFFFAOYSA-N 2-[2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOCCOC(=O)C=C HCLJOFJIQIJXHS-UHFFFAOYSA-N 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- 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
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
Abstract
The invention discloses a method for compatibilization of a polypropylene/polyethylene blend. The invention adopts a polyfunctional monomer, a peroxide initiator and zinc dithiocarbamate salt to establish a reaction system, co-branching, compatibilization and modification are carried out on the polypropylene/polyethylene blend in the melt blending process, the peroxide initiator initiates a free radical reaction, different types of macromolecular free radicals are combined with the polyfunctional monomer to generate a long-chain branched copolymer of polypropylene and polyethylene, the long-chain branched copolymer can be used for in-situ compatibilization of the polypropylene/polyethylene blend, and the polypropylene/polyethylene blend with good compatibility and excellent mechanical property can be obtained in an economic and convenient manner. The gel was low because side reactions were suppressed.
Description
Technical Field
The invention relates to the technical field of polymer material science, in particular to a method for compatibilization of a polypropylene/polyethylene blend.
Background
In polyolefin materials, polypropylene has high strength and rigidity but poor impact strength, polyethylene has good impact toughness and low temperature resistance, but insufficient strength and rigidity, and although the two performances have complementarity, the addition amount of polyethylene in polypropylene-based blends is difficult to exceed 20% due to incompatible polymers, and the addition amount of polypropylene in polyethylene-based blends is difficult to exceed 10%, otherwise serious performance deterioration and delamination of the product will occur. Because the market price of polypropylene/polyethylene in thermoplastic polymer materials is relatively low, how to economically and conveniently improve the compatibility is the key for developing PP/PE blending materials with excellent comprehensive properties.
The recent research shows that the long-chain block copolymer of propylene and ethylene can be used as a high-efficiency polypropylene/polyethylene compatibilizer, and a small amount of long-chain branched copolymer is added to have high-efficiency compatibilization effect on polypropylene/polyethylene, but the preparation of the long-chain ethylene and propylene copolymer mainly adopts a polymerization mode with a complex process and high cost, so that the application of the long-chain ethylene and propylene copolymer in a relatively cheap polyolefin blend is limited, and the long-chain block copolymer is generated in situ while the polypropylene/polyethylene is melt blended by adopting a small amount of auxiliary agent, so that the method is more economical and convenient.
Research shows that both polypropylene and polyethylene can form star-shaped long branched chain by utilizing peroxide and polyfunctional acrylate monomer through melt branching modification, although polypropylene and polyethylene are incompatible polymers, the polypropylene and the polyethylene have good melt miscibility in a molten state, the melt branching reaction system is applied to a blend of polypropylene and polyethylene for co-branching modification, the same polyfunctional monomer is respectively combined with different macromolecules to generate a monomer-centered long-chain branched copolymer which can be used for in-situ compatibilization of the polypropylene/polyethylene blend, and a free radical activity regulator (zinc dithiocarbamate) is added, so that the stability of macromolecular free radicals is improved through reversible reaction with the macromolecular free radicals, and the generation of a co-branching structure is facilitated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for compatibilization of a polypropylene/polyethylene blend, which performs co-branching modification on the blend of polypropylene and polyethylene, performs in-situ compatibilization on the polypropylene/polyethylene blend by utilizing a generated polypropylene/polyethylene long-chain branched copolymer, has good compatibility and excellent mechanical property, and overcomes the defects of the prior art.
The invention is realized by the following steps: a method for compatibilization of polypropylene/polyethylene blend comprises 100 parts by mass of a matrix, wherein 100 parts of the matrix comprise 10-90 parts of polypropylene or 10-90 parts of polyethylene, and the total of the polypropylene and the polyethylene forms 100 parts of the matrix; 0.2-2.0 parts of polyfunctional acrylate monomer; 0.01-0.10 part of peroxide initiator; and 0.03-2.0 parts of zinc dithiocarbamate.
The polypropylene is one of homopolymerized polypropylene or copolymerized polypropylene or a mixture of the homopolymerized polypropylene or the copolymerized polypropylene in any proportion; the polyethylene is one of high density polyethylene, linear low density polyethylene or low density polyethylene, or a mixture of the two in any proportion.
The multifunctional acrylate monomer has two, three or four vinyl groups in a molecular structure, and is characterized in that: the multifunctional acrylate monomer has two, three or four vinyl groups in a molecular structure, and comprises the following components:
the structural general formula of the difunctional acrylate monomer is as follows:
such as neopentyl glycol diacrylate, tetraethylene glycol diacrylate, etc.
The structural general formula of the trifunctional acrylate monomer is as follows;
such as trimethylolpropane triacrylate, pentaerythritol triacrylate, etc.,
the structural general formula of the tetrafunctional acrylate monomer is as follows;
such as trimethylolpropane triacrylate, pentaerythritol triacrylate, etc.,
wherein R is a different organic group.
The peroxide initiator is one or a mixture of more of benzoyl peroxide, lauroyl peroxide, dicumyl peroxide or di-tert-butyl peroxide in any proportion.
The zinc dithiocarbamate is one or a mixture of more of zinc dimethyldithiocarbamate, zinc diethyldithiocarbamate, zinc dibutyldithiocarbamate, zinc diisobutyldithiocarbamate and zinc dibenzyldithiocarbamate in any proportion.
According to the mass portion, polyethylene, polypropylene, polyfunctional monomer, zinc dithiocarbamate and peroxide initiator are fully and uniformly mixed, added into a screw extruder to be melted, blended and extruded, and then granulated.
The screw extruder comprises a single screw or double screw extruder, the processing temperature is 130-250 ℃, and the reaction time is 1-5 minutes.
A co-branched reaction blending system is established by adopting low-content peroxide, a free radical activity regulator and a multifunctional acrylate monomer. The hydrogen atoms on methylene of a polyethylene molecular chain and the hydrogen atoms on tertiary carbon atoms of a polypropylene molecular chain are easy to be captured by primary free radicals generated by peroxide decomposition to form macromolecular free radicals, and the macromolecular free radicals are combined with multifunctional acrylate monomers, the same multifunctional monomer is respectively combined with different types of macromolecules, so that a long-chain branched copolymer taking the monomer as the center can be generated, and the copolymer plays a role in-situ compatibilization on a polypropylene/polyethylene blend.
The macromolecular free radicals of polypropylene are easy to initiate beta-fracture of polypropylene molecular chains to generate degradation, and the macromolecular free radicals of PE are easy to generate mutual crosslinking, which are all undesirable side reactions. The addition of zinc dithiocarbamate makes it possible to regulate the concentration of active radicals, which first generate radicals without hydrogen-abstracting capacity, which in turn undergo a reversible coupling-elimination reaction with macromolecular radicals in the system. With the continuous consumption of macromolecular free radicals in the system, the equilibrium of the reaction moves to the reverse reaction direction, the combined macromolecular free radicals are gradually released again, the service life of the macromolecular free radicals is prolonged, the degradation of polypropylene and the crosslinking reaction of PE are inhibited, and sufficient long-chain branched copolymer can be generated while the gel is reduced.
Compared with the prior art, the invention prepares the polypropylene/polyethylene blend with good compatibility and excellent performance in a mode of simple process and low cost.
Detailed Description
Example 1 of the invention: 70 parts of polypropylene (polypropylene is homopolymerized type, the brand T30S) and 30 parts of polyethylene (polyethylene is high-density polyethylene, the brand is 5000S) are mixed, 0.03 part of dicumyl peroxide (DCP), 0.8 part of trimethylolpropane triacrylate (TMPTA) and 0.2 part of zinc dimethyldithiocarbamate (PZ) are added, and the mixture is added into an upstream feed inlet of a screw extruder at the temperature of 160-210 ℃ for mixing extrusion and granulation to prepare a co-branched modified sample, and a sample band is prepared by an injection molding machine for mechanical property detection.
Control group: 70 parts of polypropylene (polypropylene is homopolymerized, and the trademark is T30S) and 30 parts of polyethylene (polyethylene is high-density polyethylene and the trademark is 5000S) are mixed, added into an upstream feeding port of a screw extruder at the temperature of 160-210 ℃, mixed and extruded, cut into particles to prepare a co-branched modified sample, and a sample band is prepared by an injection molding machine to carry out mechanical property detection.
Example 2 of the invention: a method for compatibilization of polypropylene/polyethylene blend comprises the steps of mixing 30 parts of polypropylene (polypropylene is homopolymerized, the brand number is T30S) and 70 parts of polyethylene (polyethylene is high-density polyethylene, the brand number is 5000S), adding 0.02 part of 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane, 0.8 part of neopentyl glycol diacrylate and 0.2 part of zinc diisobutyl dithiocarbamate, adding an upstream feeding port of a screw extruder at the temperature of 160-210 ℃, mixing, extruding and cutting into particles to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine for mechanical property detection.
Control group: mixing 30 parts of polypropylene (polypropylene is homopolymerized type, and the trademark is T30S) and 70 parts of polyethylene (polyethylene is high-density polyethylene and the trademark is 5000S), adding the mixture into an upstream feeding port of a screw extruder at the temperature of 160-210 ℃, mixing and extruding the mixture, cutting the mixture into particles to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine to detect the mechanical property.
Example 3 of the invention: a method for compatibilization of a polypropylene/polyethylene blend comprises the steps of mixing 50 parts of polypropylene (polypropylene is a copolymer type, the trademark is 9026) and 50 parts of polyethylene (polyethylene is low-density polyethylene, the trademark is 1F7B), adding 0.05 part of benzoyl peroxide, 0.8 part of neopentyl glycol diacrylate and 0.5 part of zinc dimethyldithiocarbamate, adding an upstream feed inlet of a screw extruder at the temperature of 140-200 ℃, mixing, extruding and granulating to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine for mechanical property detection.
Control group: mixing 60 parts of polypropylene (polypropylene is copolymer type, the trademark is 9026) and 40 parts of polyethylene (polyethylene is low-density polyethylene, the trademark is 1F7B), adding the mixture into an upstream feeding port of a screw extruder at the temperature of 140-200 ℃, mixing and extruding the mixture, cutting the mixture into particles to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine to detect the mechanical property.
Example 4 of the invention: a method for compatibilization of polypropylene/polyethylene blend comprises the steps of mixing 50 parts of polypropylene (homo-polypropylene T30S and co-polypropylene 9026 are mixed according to a ratio of 1: 1) with 50 parts of polyethylene (high-density polyethylene 5000S, linear low-density polyethylene 7042 and low-density polyethylene 1E7B are mixed according to a ratio of 1:1: 1), adding 0.08 part of peroxide (dicumyl peroxide and di-tert-butyl peroxide are mixed according to a ratio of 1: 1), 1.8 parts of pentaerythritol tetraacrylate and 1.8 parts of zinc dithiocarbamate (zinc diethyldithiocarbamate and zinc dibutyldithiocarbamate are mixed according to a ratio of 1: 1), adding the mixture into an upstream feed inlet of a screw extruder at a temperature of 170-220 ℃, mixing and extruding the mixture, carrying out grain cutting to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine for mechanical property detection.
Control group: mixing 50 parts of polypropylene (homo-polypropylene T30S and co-polypropylene 9026 in a ratio of 1: 1) and 50 parts of polyethylene (high-density polyethylene 5000S, linear low-density polyethylene 7042 and low-density polyethylene 1E7B in a ratio of 1:1: 1), adding into an upstream feed inlet of a screw extruder at the temperature of 170-220 ℃, mixing, extruding, granulating to prepare a co-branched modified sample, and preparing a sample strip by using an injection molding machine for mechanical property detection.
TABLE 1 results of measurements of mechanical properties and gel content
From table 1, the co-branching modification has improved mechanical property indexes, good processability, and particularly, the elongation at break and the notch impact strength which are closely related to compatibility are remarkably improved, which indicates that the co-branching modification has good in-situ compatibilization effect and has more obvious effect on the doping material of which polyethylene accounts for the main component. After the co-branching modification, the blend has a long-chain branching structure, so that the blend has a strain hardening effect, can be used for blow molding, foaming and other occasions requiring high melt strength, and can be applied to high added value. The gel was low because side reactions were suppressed.
Claims (7)
1. The method for compatibilization of the polypropylene/polyethylene blend is characterized by comprising 100 parts of matrix by mass, wherein 100 parts of matrix comprise 10-90 parts of polypropylene or 10-90 parts of polyethylene, and the total of the polypropylene and the polyethylene forms 100 parts of matrix; 0.2-2.0 parts of polyfunctional acrylate monomer; 0.01-0.10 part of peroxide initiator; and 0.03-2.0 parts of zinc dithiocarbamate.
2. The method of compatibilizing a polypropylene/polyethylene blend according to claim 1, characterized in that: the polypropylene is one of homopolymerized polypropylene or copolymerized polypropylene or a mixture of the homopolymerized polypropylene or the copolymerized polypropylene in any proportion; the polyethylene is one of high density polyethylene, linear low density polyethylene or low density polyethylene, or a mixture of the two in any proportion.
3. The method of compatibilizing a polypropylene/polyethylene blend according to claim 1, characterized in that: the multifunctional acrylate monomer has two, three or four vinyl groups in a molecular structure, and comprises the following components:
the structural general formula of the difunctional acrylate monomer is as follows:
the three-functionality acrylic ester monomer is trimethylolpropane triacrylate, pentaerythritol triacrylate and the like, and has the following structural general formula;
the structural general formula of the tetrafunctional acrylate monomer is as follows;
wherein R is a different organic group.
4. The method of compatibilizing a polypropylene/polyethylene blend according to claim 1, characterized in that: the peroxide initiator is one or a mixture of more of benzoyl peroxide, lauroyl peroxide, dicumyl peroxide or di-tert-butyl peroxide in any proportion.
5. The method of compatibilizing a polypropylene/polyethylene blend according to claim 1, characterized in that: the zinc dithiocarbamate is one or a mixture of more of zinc dimethyldithiocarbamate, zinc diethyldithiocarbamate, zinc dibutyldithiocarbamate, zinc diisobutyldithiocarbamate and zinc dibenzyldithiocarbamate in any proportion.
6. A method of compatibilizing a polypropylene/polyethylene blend according to any one of claims 1 to 5, characterized in that: according to the mass portion, polyethylene, polypropylene, polyfunctional monomer, zinc dithiocarbamate and peroxide initiator are fully and uniformly mixed, added into a screw extruder to be melted, blended and extruded, and then granulated.
7. The method of compatibilizing a polypropylene/polyethylene blend according to claim 6, characterized in that: the screw extruder comprises a single screw or double screw extruder, the processing temperature is 130-250 ℃, and the reaction time is 1-5 minutes.
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| CN202110371579.2A CN113024737A (en) | 2021-04-07 | 2021-04-07 | Method for compatibilization of polypropylene/polyethylene blend |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110371579.2A CN113024737A (en) | 2021-04-07 | 2021-04-07 | Method for compatibilization of polypropylene/polyethylene blend |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116082735A (en) * | 2023-02-03 | 2023-05-09 | 深圳市富恒新材料股份有限公司 | Composite material special for medical bed and preparation method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226576A (en) * | 1998-12-25 | 1999-08-25 | 清华大学 | Method for increasing reaction of polypropylene mixture by adding multifunctional monomer |
| DE102004050239A1 (en) * | 2004-10-15 | 2005-05-12 | Clariant Gmbh | Cosmetic, dermatological and/or pharmaceutical agent, e.g. hair color, bleach, toner, conditioner or styling agent, deodorant or antiperspirant, contains crosslinked copolymer of N-vinylcaprolactam, (alk)acrylamido-alkane-sulfonic salt |
| CN101235123A (en) * | 2008-03-06 | 2008-08-06 | 中国科学院长春应用化学研究所 | Method for increasing melt strength of polypropylene |
| CN101434681A (en) * | 2008-12-17 | 2009-05-20 | 中国科学院长春应用化学研究所 | High melt strength acrylic resin and preparation |
| CN102329405A (en) * | 2011-06-22 | 2012-01-25 | 华东理工大学 | Preparation method of continuous high-melt-strength polypropylene based on grafting reaction |
| WO2014028210A1 (en) * | 2012-08-16 | 2014-02-20 | Exxonmobile Chemical Patents Inc. | Highly branched compositions and processes for the production thereof |
| CN103865176A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Preparation method of high-melt-strength polypropylene |
| CN104194693A (en) * | 2014-08-28 | 2014-12-10 | 江苏凯力高分子科技有限公司 | Novel high-performance environment-friendly adhesive and preparation method thereof |
| CN104592451A (en) * | 2015-01-09 | 2015-05-06 | 贵州大学 | High-grafting-ratio maleic anhydride graft polypropylene material and preparation method thereof |
| CN105037656A (en) * | 2015-09-07 | 2015-11-11 | 中国科学院宁波材料技术与工程研究所 | Polypropylene/polystyrene alloy and preparation method thereof |
| CN105924584A (en) * | 2016-05-15 | 2016-09-07 | 贵州大学 | Long-chain branched high-density polyethylene material resisting environmental stress cracking and preparation method thereof |
| CN108285512A (en) * | 2018-02-02 | 2018-07-17 | 上海阳越新材料科技有限公司 | A kind of toughening enhancing recycle polyethylene/PP composite material and preparation method thereof |
-
2021
- 2021-04-07 CN CN202110371579.2A patent/CN113024737A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226576A (en) * | 1998-12-25 | 1999-08-25 | 清华大学 | Method for increasing reaction of polypropylene mixture by adding multifunctional monomer |
| DE102004050239A1 (en) * | 2004-10-15 | 2005-05-12 | Clariant Gmbh | Cosmetic, dermatological and/or pharmaceutical agent, e.g. hair color, bleach, toner, conditioner or styling agent, deodorant or antiperspirant, contains crosslinked copolymer of N-vinylcaprolactam, (alk)acrylamido-alkane-sulfonic salt |
| CN101235123A (en) * | 2008-03-06 | 2008-08-06 | 中国科学院长春应用化学研究所 | Method for increasing melt strength of polypropylene |
| CN101434681A (en) * | 2008-12-17 | 2009-05-20 | 中国科学院长春应用化学研究所 | High melt strength acrylic resin and preparation |
| CN102329405A (en) * | 2011-06-22 | 2012-01-25 | 华东理工大学 | Preparation method of continuous high-melt-strength polypropylene based on grafting reaction |
| CN104583245A (en) * | 2012-08-16 | 2015-04-29 | 埃克森美孚化学专利公司 | Highly branched compositions and processes for the production thereof |
| WO2014028210A1 (en) * | 2012-08-16 | 2014-02-20 | Exxonmobile Chemical Patents Inc. | Highly branched compositions and processes for the production thereof |
| CN103865176A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Preparation method of high-melt-strength polypropylene |
| CN104194693A (en) * | 2014-08-28 | 2014-12-10 | 江苏凯力高分子科技有限公司 | Novel high-performance environment-friendly adhesive and preparation method thereof |
| CN104592451A (en) * | 2015-01-09 | 2015-05-06 | 贵州大学 | High-grafting-ratio maleic anhydride graft polypropylene material and preparation method thereof |
| CN105037656A (en) * | 2015-09-07 | 2015-11-11 | 中国科学院宁波材料技术与工程研究所 | Polypropylene/polystyrene alloy and preparation method thereof |
| CN105924584A (en) * | 2016-05-15 | 2016-09-07 | 贵州大学 | Long-chain branched high-density polyethylene material resisting environmental stress cracking and preparation method thereof |
| CN108285512A (en) * | 2018-02-02 | 2018-07-17 | 上海阳越新材料科技有限公司 | A kind of toughening enhancing recycle polyethylene/PP composite material and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| EBERHARD BORSIG 等: "Crosslinking of Polypropylene-Polyethylene Blends by Peroxide and the Effect of Pentaerythritol Tetrallyl Ether", 《JOURNAL OF APPLIED POLYMERSCIENCE》 * |
| POONAM SINGH 等: "Morphology and Properties of Modified Polypropylene for Extruded Film Applications", 《POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING》 * |
| YANJIE AN等: "Structure and Properties of High Melt Strength Polypropylene Prepared by Combined Method of Blending and Crosslinking", 《JOURNAL OF APPLIED POLYMER SCIENCE》 * |
| 孟雅新等: "辐射引发界面反应改善PP/LDPE体系力学性能", 《现代塑料加工应用》 * |
| 杨淑静等: "引发剂对于PP／LDPE 反应挤出共混改性效果的影响", 《现代化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116082735A (en) * | 2023-02-03 | 2023-05-09 | 深圳市富恒新材料股份有限公司 | Composite material special for medical bed and preparation method thereof |
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