CN110483893B - Polypropylene flame-retardant material capable of being used for concealed bottom box production and preparation method thereof - Google Patents
Polypropylene flame-retardant material capable of being used for concealed bottom box production and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 86
- 239000003063 flame retardant Substances 0.000 title claims abstract description 72
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 71
- 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 70
- -1 Polypropylene Polymers 0.000 title claims abstract description 70
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000012745 toughening agent Substances 0.000 claims abstract description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 18
- 239000003365 glass fiber Substances 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 2
- HLQNQYKRKYSHOH-UHFFFAOYSA-N [Br].[N].[P] Chemical group [Br].[N].[P] HLQNQYKRKYSHOH-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 claims description 2
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 24
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 24
- 238000001746 injection moulding Methods 0.000 abstract description 9
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 3
- 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 description 3
- 230000006698 induction Effects 0.000 description 3
- 229910052901 montmorillonite Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- C08L23/12—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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polypropylene flame-retardant material for producing a concealed bottom box and a preparation method thereof. The polypropylene flame-retardant material comprises the following components in parts by weight: 60-100 parts of polypropylene resin, 2-5 parts of conventional flame retardant, 20-40 parts of inorganic enhanced flame retardant, 2-5 parts of toughening agent, 0.2-0.6 part of antioxidant and 0.5-1.0 part of lubricant. The polypropylene flame retardant material disclosed by the invention has the advantages of no corrosion to a mold, small damage to a screw of an injection molding machine, wide processing temperature range, stable product color, lighter product weight, higher vicat softening point and lower cost compared with PVC (polyvinyl chloride) after toughening and modification, is more suitable for a low-temperature environment, can be applied to the fields of electric products such as extension sockets, power supply boxes, switch backseat and the like, and can completely meet various standard requirements in the field of electric application.
Description
Technical Field
The invention relates to the technical field of polypropylene flame-retardant materials, in particular to a polypropylene flame-retardant material for producing a concealed bottom box and a preparation method thereof.
Background
At present, the concealed bottom box is widely applied to the fields of home decoration and electricians, the commonly adopted material is a PVC mixed material filled with minerals, but the PVC mixed material is easy to corrode a mold in the injection molding production process, has large damage to an injection molding screw, has a narrow processing temperature range, is unstable in product color, is large in low-temperature cold brittleness and is not suitable for a low-temperature environment, and is low in Vicat softening point and not suitable for places with higher room temperature. Therefore, there is a need to develop a material which has no corrosion to the mold, little damage to the screw of the injection molding machine, wide processing temperature range, stable product color, lighter product weight, lower cost, better suitability for low temperature environment after toughening modification, higher vicat softening point compared with PVC, and can completely meet the production and use requirements of the concealed bottom box.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polypropylene flame-retardant material for producing a concealed bottom box and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a polypropylene flame retardant material for concealed bottom box production comprises the following components in parts by weight: 60-100 parts of polypropylene resin, 2-5 parts of conventional flame retardant, 20-40 parts of inorganic enhanced flame retardant, 2-5 parts of toughening agent, 0.2-0.6 part of antioxidant and 0.5-1.0 part of lubricant.
The polypropylene flame retardant material prepared by taking the polypropylene resin as a base material and adding a proper amount of conventional flame retardant, inorganic enhanced flame retardant, toughening agent, antioxidant and lubricant has no corrosion to a mold, small damage to a screw of an injection molding machine, wide processing temperature range, stable product color, lighter product weight, lower cost, higher Vicat softening point compared with PVC (polyvinyl chloride), is more suitable for a low-temperature environment after toughening modification, can be applied to the field of electrical products such as extension socket, a power supply box, a switch back seat and the like, and can completely meet various standard requirements of the field of electrical application.
Preferably, the polypropylene resin is a compound consisting of homopolymerized polypropylene resin and a polypropylene resin reclaimed material according to a mass ratio of (1-3) to 1, and the melt flow indexes of the homopolymerized polypropylene resin and the polypropylene resin reclaimed material are both (5-15 g)/10 min. The application selects the homopolymerized polypropylene resin and the polypropylene resin reclaimed material for compounding, so that the material utilization rate can be improved, the resource recycling is facilitated, and the cost is reduced.
Preferably, the conventional flame retardant is a phosphorus-nitrogen-bromine complex system flame retardant. The invention selects phosphorus, nitrogen and bromine as flame retardant elements, and has the characteristics of low addition, no precipitation, water resistance, no toxicity and the like.
Preferably, the inorganic enhanced flame retardant is a compound of an inorganic enhanced flame retardant 1 and an inorganic enhanced flame retardant 2, and the inorganic enhanced flame retardant 1 is at least one of barium sulfate, montmorillonite and talcum powder; the inorganic enhanced flame retardant 2 is at least one of chopped glass fiber, long glass fiber, glass powder and glass beads. Tests show that the flame retardant property, the mechanical property, the shrinkage rate and the Vicat softening point of the polypropylene flame retardant material can be changed by selecting and adding different inorganic enhanced flame retardants. More preferably, the inorganic enhanced flame retardant is a compound of barium sulfate and chopped glass fibers, and when the mass ratio of the barium sulfate to the chopped glass fibers is (1.5-2.0):1, the prepared polypropylene flame-retardant material has excellent flame retardance and simultaneously has higher mechanical property and Vicat softening point.
Preferably, the toughening agent is at least one of POE, PP-MAN and EMA, so that the toughening effect of the material is improved.
Preferably, the antioxidant is a mixture of a hindered phenol antioxidant and a phosphite antioxidant.
Preferably, the weight ratio of the hindered phenol antioxidant to the phosphite antioxidant in the antioxidants is 1 (1.0-2.0), preferably 1:1, the antioxidant performance is good, and the prepared polypropylene flame retardant material has high mechanical property and Vicat softening point.
Preferably, the lubricant is at least one of N, N' -ethylene bis stearamide, pentaerythritol stearate and glycerol monostearate.
The invention also provides a preparation method of the polypropylene flame-retardant material for producing the concealed bottom box, which comprises the following steps:
(1) weighing raw materials of each component according to a proportion, and putting the raw materials of each component into a high-speed mixer for mixing;
(2) and putting the uniformly mixed materials into an extruder, and performing melt reaction, extrusion and granulation to obtain the polypropylene flame retardant material.
Preferably, in the step (2), the extrusion is carried out in a twin-screw extruder under the following processing conditions: the first zone temperature is 170-.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the cost is not changed much, the polypropylene flame-retardant material has small damage to a mold and an injection molding screw rod in the injection molding production process;
(2) the polypropylene flame-retardant material keeps similar size shrinkage rate with the existing PVC mixed material, can be directly produced by utilizing the existing PVC concealed bottom box mold and machine table, and does not need to repair the mold and purchase another mold;
(3) the polypropylene flame-retardant material has lower density, reduces the unit weight of the final concealed bottom box product, obviously increases the yield and reduces the cost under the condition of the same total material consumption;
(4) the polypropylene flame-retardant material has good flame-retardant property, mechanical property, high-temperature aging resistance and Vicat softening point, the processing stability of a concealed bottom box product formed by injection molding of the polypropylene flame-retardant material is obviously improved, and the product is more resistant to severe application environment.
(5) The invention has simple and reliable production process and less invested funds.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
The raw materials used in the examples are now described below, but are not limited to these materials:
PP resin: the melt flow indexes of the homopolymerized polypropylene resin and the polypropylene resin reclaimed material are both (5-15 g)/10 min.
Conventional flame retardants: lydorflam5014, guangdong cis Engineer materials science and technology, Inc.
Barium sulfate: precipitated barium sulfate, guangzhou colorring plastics materials ltd.
Talc powder: superfine talc powder, Guangxi Longsheng.
Montmorillonite: superfine montmorillonite, Hebei Lingshou county Hechang mineral processing factory.
Short-cutting glass fiber: alkali-free glass chopped strands 508A for thermoplastics, boulder group, Inc.
Long glass fiber: thermoplastic untwisted rovings 910 for extrusion molding, boulder group ltd.
Glass powder: milled fiber EMG13-70C, megalithic group, Inc.
Glass beads: ultra-fine, Tuoyi New materials (Guangzhou) Inc.
POE: 8100 Dow.
PP-MAH: CMG9801, easy compatilizer, inc.
EMA 1125AC, Dow.
RIANOX 1010: the hindered phenol main antioxidant is produced by new Tianjin Lianlong material GmbH.
RIANOX 168: phosphite ester auxiliary antioxidant is produced by new Tianjin Lianlong material GmbH.
Lubricant: EBS, N' -ethylene bis stearamide, swiss dragon sand.
Examples 1 to 12
The compositions of the polypropylene flame retardant materials for the production of the concealed bottom box of examples 1 to 12 are shown in table 1, wherein the preparation method of the polypropylene flame retardant materials for the production of the concealed bottom box of examples 1 to 12 comprises the following steps:
(1) weighing the raw materials of each component according to a proportion, and putting the raw materials of each component into a high-speed mixer to mix for 5 minutes;
(2) placing the uniformly mixed materials in a double-screw extruder, wherein the processing technological conditions are as follows: the temperature of the first zone is 170-.
TABLE 1
The comparative example is a PVC concealed bottom box mixed material, and the components (parts by weight) of the mixed material are as follows: 100 parts of polyvinyl chloride, 10-20 parts of light activated calcium carbonate, 3-5 parts of stabilizer, 5-10 parts of toughening agent, 3-5 parts of processing modifier and 0.5-1.0 part of lubricant.
Effect testing
The PVC concealed bottom case mix of examples 1-12 and comparative example was subjected to a performance test according to a standard method, and the plaques were subjected to an oxidative induction period test (OIT, temperature 200 ℃ C.) according to the test standard. The test items and standards are shown in Table 2, and the test results are shown in Table 3.
TABLE 2
| Detecting items | Unit of | Detection standard |
| Melt finger (230 ℃/2.16kg) | g/10min | ISO1133-91 |
| Density of | g/cm3 | GB/T1033.1-2008 |
| Tensile strength | MPa | ISO527/2-93 |
| Bending strength | MPa | ISO178-93 |
| Drop test | -- | JG 3050 |
| Strong impact of cantilever beam gap | KJ/m2 | ISO180-93 |
| Oxygen index | ％ | JG 3050 |
| Time to self-extinguish | s | JG 3050 |
| Shrinkage rate | ％ | GB/T 15585-1995 |
| Period of oxidative induction | min | GB/T 17391 |
| Vicat softening point | ℃ | GB/T 1633-200 |
TABLE 3
From the compounding of the polypropylene flame retardant materials of examples 1-12 with the comparative example (PVC), it can be seen that:
1. the polypropylene flame retardant material has higher flame retardance and oxygen index than PVC, has shorter self-extinguishing time than PVC, and shows that the flame retardance is more excellent than that of PVC materials.
2. The density of the polypropylene flame-retardant material is obviously lower than that of a PVC mixed material, which means that the unit weight of a product is obviously reduced, the total output is obviously increased and the cost is lower under the condition that the total material consumption is not changed.
3. The notch impact strength and the drop test effect of the polypropylene flame retardant material are better than those of a PVC mixed material, which shows that the toughness of the polypropylene flame retardant material is obviously better than that of the PVC mixed material, so that the polypropylene flame retardant material is more suitable for the application environment which can cause product deformation and is more suitable for the low-temperature environment. According to the invention, the barium sulfate and the chopped glass fiber are added, the prepared polypropylene flame-retardant material has high mechanical property, and when the mass ratio of the barium sulfate to the chopped glass fiber is (1.5-2.0):1, the prepared polypropylene flame-retardant material has excellent flame retardance and high mechanical property and Vicat softening point.
4. The shrinkage rate of the polypropylene flame-retardant material is similar to that of a PVC mixed material, and the modification of the original PVC injection mold is avoided in the production of the concealed bottom box.
5. Compared with PVC mixed materials, the high-temperature aging test of the polypropylene flame-retardant material is obviously improved, and the color of the product is not easy to change.
6. The Vicat softening point of the polypropylene flame-retardant material is obviously increased compared with that of a PVC mixed material, which shows that the concealed bottom box formed by injection molding of the polypropylene flame-retardant material is more resistant to high temperature and is not easy to soften and deform.
7. After the polypropylene flame retardant material is modified, the oxidation induction period (OIT) generally reaches or exceeds that of the common PVC material, but the test result shows that the proportion of the hindered phenol antioxidant and the phosphite antioxidant is very important, and the effect is optimal when the proportion reaches 1 (1.0-2.0), particularly 1: 1.
In the invention, in order to improve the material utilization rate and reduce the cost, the polypropylene resin consisting of the homopolymerized polypropylene resin and the polypropylene resin reclaimed material according to the mass ratio of (1-3) to 1 can be selected, and the melt flow indexes of the homopolymerized polypropylene resin and the polypropylene resin reclaimed material are both (5-15 g)/10 min.
In the invention, the composition ratio of the material can be properly adjusted according to the actual performance requirement, and the polypropylene flame-retardant material comprises the following components in parts by weight: 60-100 parts of polypropylene resin, 2-5 parts of conventional flame retardant, 20-40 parts of inorganic enhanced flame retardant, 2-5 parts of toughening agent, 0.2-0.6 part of antioxidant and 0.5-1.0 part of lubricant.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The polypropylene flame-retardant material for the production of the concealed bottom box is characterized by comprising the following components in parts by weight: 60-100 parts of polypropylene resin, 2-5 parts of conventional flame retardant, 20-40 parts of inorganic enhanced flame retardant, 2-5 parts of toughening agent, 0.2-0.6 part of antioxidant and 0.5-1.0 part of lubricant;
the inorganic enhanced flame retardant is a compound of barium sulfate and chopped glass fibers, and the weight ratio of the barium sulfate to the chopped glass fibers is (1.5-2.0): 1;
the polypropylene resin is a compound consisting of homopolymerized polypropylene resin and polypropylene resin reclaimed materials according to a mass ratio of (1-3) to 1, and the melt flow indexes of the homopolymerized polypropylene resin and the polypropylene resin reclaimed materials are both (5-15 g)/10 min.
2. The polypropylene flame retardant material applicable to the production of the concealed bottom box according to claim 1, wherein the conventional flame retardant is a phosphorus-nitrogen-bromine composite system flame retardant.
3. The polypropylene flame retardant material applicable to concealed bottom box production according to claim 1, wherein the toughening agent is at least one of POE, PP-MAN and EMA.
4. The polypropylene flame retardant material for dark-bottom box production according to claim 1, wherein the antioxidant is a mixture of hindered phenol antioxidant and phosphite antioxidant.
5. The polypropylene flame retardant material for the production of the concealed bottom box according to claim 4, wherein the weight ratio of the hindered phenol antioxidant to the phosphite antioxidant in the antioxidant is 1 (1.0-2.0).
6. The polypropylene flame retardant material for production of cassette bottom box according to claim 5, wherein the weight ratio of hindered phenol antioxidant and phosphite antioxidant in the antioxidant is 1: 1.
7. The polypropylene flame retardant material applicable to the production of the concealed bottom box according to claim 1, wherein the lubricant is at least one of N, N' -ethylene bis stearamide, pentaerythritol stearate and glycerol monostearate.
8. The preparation method of the polypropylene flame retardant material for the production of the concealed bottom box according to any one of claims 1 to 7, wherein the method comprises the following steps:
(1) weighing raw materials of each component according to a proportion, and putting the raw materials of each component into a high-speed mixer for mixing;
(2) and putting the uniformly mixed materials into an extruder, and performing melt reaction, extrusion and granulation to obtain the polypropylene flame retardant material.
9. The method for preparing the polypropylene flame retardant material for the concealed bottom box production according to the claim 8, wherein in the step (2), the extrusion is carried out in a twin-screw extruder under the following processing conditions: the first zone temperature is 170-.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103589061A (en) * | 2013-10-29 | 2014-02-19 | 天津金发新材料有限公司 | Glass fiber reinforced polypropylene composite material and its preparation method and application thereof |
| CN105218941A (en) * | 2015-09-16 | 2016-01-06 | 天津金发新材料有限公司 | High withstand voltage modified polypropylene material of a kind of easily welding and preparation method thereof and application |
| CN109265835A (en) * | 2018-09-29 | 2019-01-25 | 重庆科聚孚工程塑料有限责任公司 | Flame-retardant polypropylene material for battery pack upper cover of new energy vehicle and preparation method thereof |
| CN109354768A (en) * | 2018-10-16 | 2019-02-19 | 青岛科技大学 | A kind of preparation of high-performance refractory scraping-resistant polypropylene material |
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| US20110105667A1 (en) * | 2009-10-30 | 2011-05-05 | Chris Brenner | Polyolefin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589061A (en) * | 2013-10-29 | 2014-02-19 | 天津金发新材料有限公司 | Glass fiber reinforced polypropylene composite material and its preparation method and application thereof |
| CN105218941A (en) * | 2015-09-16 | 2016-01-06 | 天津金发新材料有限公司 | High withstand voltage modified polypropylene material of a kind of easily welding and preparation method thereof and application |
| CN109265835A (en) * | 2018-09-29 | 2019-01-25 | 重庆科聚孚工程塑料有限责任公司 | Flame-retardant polypropylene material for battery pack upper cover of new energy vehicle and preparation method thereof |
| CN109354768A (en) * | 2018-10-16 | 2019-02-19 | 青岛科技大学 | A kind of preparation of high-performance refractory scraping-resistant polypropylene material |
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