CN115058079A - Preparation method of flame-retardant polypropylene - Google Patents
Preparation method of flame-retardant polypropylene Download PDFInfo
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- CN115058079A CN115058079A CN202210484359.5A CN202210484359A CN115058079A CN 115058079 A CN115058079 A CN 115058079A CN 202210484359 A CN202210484359 A CN 202210484359A CN 115058079 A CN115058079 A CN 115058079A
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- screw extruder
- polypropylene
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 51
- 239000003063 flame retardant Substances 0.000 title claims abstract description 43
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 42
- -1 polypropylene Polymers 0.000 title claims abstract description 40
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 18
- 229920001577 copolymer Polymers 0.000 claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 11
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 11
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229920001038 ethylene copolymer Polymers 0.000 claims description 8
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 6
- MYOXMAQGEINAEF-UHFFFAOYSA-N [C].N1=NN=CC=C1 Chemical class [C].N1=NN=CC=C1 MYOXMAQGEINAEF-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910000077 silane Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 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 description 3
- 229920000877 Melamine resin Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- 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
- C08J2323/12—Polypropene
-
- 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
- C08J2423/12—Polypropene
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- 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
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5425—Silicon-containing compounds containing oxygen containing at least one C=C bond
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the field of flame-retardant materials, and discloses a preparation method of flame-retardant polypropylene, which comprises polypropylene, PP/PE-based flame-retardant master batches and a compatilizer; the weight ratio of the polypropylene to the PP/PE-based flame-retardant master batch to the compatilizer is as follows: 67-74: 24-28: 0.2-0.5; the compatilizer is ethylene-octene copolymer POE; the compatilizer is ethylene-octene copolymer POE. The polypropylene polymer has low reduction degree of physical properties.
Description
Technical Field
The invention belongs to the field of flame-retardant materials, and particularly relates to a preparation method of flame-retardant polypropylene.
Background
The applicant discloses a prior application CN201610034873.3, which discloses a flame retardant containing allyl substituted triazine carbon forming agent and a preparation method thereof, wherein the intumescent flame retardant consists of allyl substituted triazine carbon forming agent which can be crosslinked with high molecular resin, ammonium polyphosphate or coated ammonium polyphosphate and crosslinking agent. The allyl substituted triazine carbon forming agent capable of being crosslinked with the resin substrate is prepared by taking cyanuric chloride, allyl amine and ammonia water as raw materials through substitution reaction in an aqueous solution, and has the characteristics of easily obtained raw materials, convenience for continuous production, no use of organic solvents, high yield and the like. The carbon forming agent has a gas source and a carbon source unit, and is matched with an acid source and combined with resin into a whole through a cross-linking agent when in use.
After the flame retardant containing the allyl substituted triazine carbon forming agent is added into polypropylene, parameters such as surface hardness, tensile strength and the like can be reduced.
Causes of this problem include: the influence of the flame retardant itself, the decrease in dispersibility of the flame retardant, the decrease in strength of the substrate, and the like.
Therefore, the technical problem to be solved by the scheme is as follows: how to maintain the physical properties of the polypropylene after the flame retardant material is added.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention aims to provide a preparation method of flame-retardant polyethylene, which has physical properties close to those of high-density polyethylene.
The specific scheme is as follows:
a preparation method of flame-retardant polypropylene comprises polypropylene, PP/PE-based flame-retardant master batches and a compatilizer;
the weight ratio of the polypropylene to the PP/PE-based flame-retardant master batch to the compatilizer is as follows: 67-74: 24-28: 0.2-0.5;
the compatilizer is ethylene-octene copolymer POE.
The preparation method of the flame-retardant polypropylene comprises polypropylene, an ethylene copolymer LOTADER 4700, a carbon forming agent, ammonium polyphosphate, a silane cross-linking agent and an initiator;
the carbon forming agent is an allyl substituted triazine carbon forming agent;
the proportion of each component is as follows:
15-25% of polypropylene;
3-5% of low-density polyethylene;
ethylene copolymer LOTADER 47005-10%;
the total amount of the ammonium polyphosphate and the carbon forming agent is controlled to be 60-75 percent;
0.05 to 0.1 percent of silane cross-linking agent with unsaturated ethylenic bond;
0.05 to 0.1 percent of initiator.
The weight ratio of the ammonium polyphosphate to the carbon forming agent is 3.5: 1-4: 1.
In the preparation method of the flame retardant polypropylene, the flame retardant polypropylene is prepared by the following steps:
mixing the materials, adding the mixture into a double-screw extruder, and extruding and molding at the temperature of 190 ℃ and 230 ℃.
In the preparation method of the flame-retardant polypropylene, the materials are mixed and added into a double-screw extruder, wherein the temperature of a first area of the double-screw extruder is 190-200 ℃, the temperature of a second area of the double-screw extruder is 200-210 ℃, the temperature of a third area of the double-screw extruder is 200-215 ℃, the temperature of a fourth area of the double-screw extruder is 210-225 ℃, the temperature of a fifth area of the double-screw extruder is 220-230 ℃, and the temperature of a sixth area of the double-screw extruder is 215-225 ℃; the rotation speed of the twin-screw extruder is 300-500 rpm.
Compared with the prior art, the invention has the beneficial effects that:
the low-density polyethylene and the polypropylene are used as the flame retardant master batch base material, the good fluidity of the low-density polyethylene is utilized to improve the dispersion uniformity of the loaded flame retardant, the organosilicon crosslinking agent and the ethylene copolymer LOTADER 4700 are added into the base material, and the ethylene copolymer LOTADER 4700 is a good modified toughening agent and compatilizer, so that the dispersion characteristic of the flame retardant material can be improved, the toughening effect is realized, and the weakening of the physical properties of the high-density polyethylene is slowed down; in the processing process of polypropylene, the ethylene-octene copolymer POE is added, and the ethylene-octene copolymer POE is also a toughening compatibilizer.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
A preparation method of flame-retardant polyethylene comprises the following steps:
mixing materials and adding the materials into a double-screw extruder, wherein the temperature of a first area of the double-screw extruder is 190-200 ℃, the temperature of a second area of the double-screw extruder is 200-210 ℃, the temperature of a third area of the double-screw extruder is 200-215 ℃, the temperature of a fourth area of the double-screw extruder is 210-225 ℃, the temperature of a fifth area of the double-screw extruder is 220-230 ℃, and the temperature of a sixth area of the double-screw extruder is 215-225 ℃; the rotation speed of the twin-screw extruder is 300-500 rpm.
The materials comprise: polypropylene, PP/PE-based flame-retardant master batch and compatilizer.
The proportion of the polypropylene, the PP/PE-based flame-retardant master batch and the compatilizer (ethylene-octene copolymer POE) is as follows: 73.3: 26: 0.3;
the formula of the PP/PE-based flame-retardant master batch is as follows:
polypropylene PPB-M0220%
3.8 percent of low-density polyethylene;
ethylene copolymer LOTADER 47006%;
15.5% of N-methyl-N-allyl-melamine;
54.5 percent of ammonium polyphosphate;
0.1% of vinyl triethoxysilane;
dicumyl peroxide 0.1%.
The preparation method comprises the following steps:
step 1: mixing materials and adding the materials into a screw extruder;
step 2: the temperature of the first zone of the double-screw extruder is 170-190 ℃, the temperature of the second zone is 180-200 ℃, the temperature of the third zone is 190-210 ℃, the temperature of the fourth zone is 200-225 ℃, the temperature of the fifth zone is 215-230 ℃, and the temperature of the sixth zone is 220-230 ℃; the rotation speed of the twin-screw extruder was 200-300 rpm.
Example 2
Substantially the same as in example 1, except that the material comprised: polypropylene, PP/PE-based flame-retardant master batch and compatilizer, wherein the weight ratio of the polypropylene to the PP/PE-based flame-retardant master batch is as follows: 69: 26: 0.5.
Example 3
Substantially the same as in example 1, except that the material comprised: polypropylene, PP/PE-based flame-retardant master batch and compatilizer, wherein the weight ratio of the polypropylene to the PP/PE-based flame-retardant master batch is as follows: 74: 24: 0.2.
Example 4
Substantially the same as example 1, except that the formulation of the PP/PE based flame retardant masterbatch is as follows:
polypropylene PPB-M0220%
4% of low-density polyethylene;
ethylene copolymer LOTADER 47008%;
13.6% of N-methyl-N-allyl-melamine;
54.2 percent of ammonium polyphosphate;
0.1% of vinyl triethoxysilane;
dicumyl peroxide 0.1%.
Example 5
Substantially the same as example 1, except that the formulation of the PE-based flame retardant masterbatch is as follows:
polypropylene PPB-M0216%
3.8 percent of low-density polyethylene;
ethylene copolymer LOTADER 47005%;
15% of N-methyl-N-allyl-melamine;
60% of ammonium polyphosphate;
0.1 percent of vinyl trimethoxy silane;
dicumyl peroxide 0.1%.
Comparative example 1
The same as example 1, except that the materials included: the polypropylene and PP/PE based flame-retardant master batch comprises the following components in percentage by weight: 75: 25.
Comparative example 2
Essentially the same as in example 1, except that maleic anhydride PE grafting agent was used in place of LOTADER 4700.
Comparative example 3
The same as in example 1 except that triethoxysilylpropane was used in place of vinyltrimethoxysilane.
Performance testing
The plate meets the test requirements of UL94/3.2mm and UL94/1.6mm, and has a fire-retardant rating of V0.
The three tests of notched Izod impact strength, tensile strength and elongation at break of example 1, example 4, example 5, comparative example 1, comparative example 2 and comparative example 3 are carried out, and the test results are shown in Table 2:
table 2 results of performance testing
Izod notched impact Strength | Tensile strength | |
Example 1 | 4.2 | 16.2 |
Example 4 | 3.9 | 15.9 |
Example 5 | 3.9 | 15.2 |
Comparative example 1 | 3.2 | 12.5 |
Comparative example 2 | 3.8 | 15.5 |
Comparative example 3 | 3.7 | 14.8 |
Through the comparison, the LOTADER 4700 and the ethylene-octene copolymer POE have obvious promotion effects on the aspects of ensuring the loading capacity of the master batch, the binding affinity of the master batch and the base material and improving the mechanical performance in the molding process of the fireproof master batch and the plate.
Claims (4)
1. A preparation method of flame-retardant polypropylene is characterized by comprising the following steps: comprises polypropylene, PP/PE-based flame-retardant master batch and compatilizer;
the weight ratio of the polypropylene to the PP/PE-based flame-retardant master batch to the compatilizer is as follows: 67-74: 24-28: 0.2-0.5;
the compatilizer is ethylene-octene copolymer POE.
2. The method for preparing flame retardant polypropylene according to claim 1, wherein: comprises polypropylene, ethylene copolymer LOTADER 4700, carbon forming agent, ammonium polyphosphate, silane cross-linking agent and initiator;
the carbon forming agent is an allyl substituted triazine carbon forming agent;
the proportion of each component is as follows:
15-25% of polypropylene;
3-5% of low-density polyethylene;
ethylene copolymer LOTADER 47005-10%;
the total amount of the ammonium polyphosphate and the carbon forming agent is controlled to be 60-75 percent;
0.05 to 0.1 percent of silane cross-linking agent with unsaturated ethylenic bond;
0.05 to 0.1 percent of initiator.
The weight ratio of the ammonium polyphosphate to the carbon forming agent is 3.5: 1-4: 1.
3. The method for preparing flame retardant polypropylene according to claim 1, wherein: the preparation method comprises the following steps:
mixing the materials, adding the mixture into a double-screw extruder, and extruding and molding at the temperature of 190 ℃ and 230 ℃.
4. The method of preparing a flame retardant polyethylene according to claim 3, characterized in that: mixing materials and adding the materials into a double-screw extruder, wherein the temperature of a first area of the double-screw extruder is 190-200 ℃, the temperature of a second area of the double-screw extruder is 200-210 ℃, the temperature of a third area of the double-screw extruder is 200-215 ℃, the temperature of a fourth area of the double-screw extruder is 210-225 ℃, the temperature of a fifth area of the double-screw extruder is 220-230 ℃, and the temperature of a sixth area of the double-screw extruder is 215-225 ℃; the rotation speed of the twin-screw extruder is 300-500 rpm.
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Cited By (1)
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CN116478471A (en) * | 2023-02-14 | 2023-07-25 | 广东甲乙新材料有限责任公司 | Flame-retardant polypropylene material and preparation method thereof |
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CN110734608A (en) * | 2019-10-29 | 2020-01-31 | 烟台格瑞恩高分子材料有限公司 | flame-retardant master batch and application thereof in flame-retardant polypropylene material |
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2022
- 2022-05-05 CN CN202210484359.5A patent/CN115058079A/en active Pending
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CN102585347A (en) * | 2012-01-05 | 2012-07-18 | 华南理工大学 | Halogen-free intumescent flame-retardant polypropylene mixture and preparation method thereof |
CN103333406A (en) * | 2013-06-05 | 2013-10-02 | 华南理工大学 | Modified intumescent flame-retardant polypropylene composition and preparation method thereof |
CN110734608A (en) * | 2019-10-29 | 2020-01-31 | 烟台格瑞恩高分子材料有限公司 | flame-retardant master batch and application thereof in flame-retardant polypropylene material |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN116478471A (en) * | 2023-02-14 | 2023-07-25 | 广东甲乙新材料有限责任公司 | Flame-retardant polypropylene material and preparation method thereof |
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