LU505058B1 - Formulation for anti-aging composite material and multi-layer injection method thereof - Google Patents
Formulation for anti-aging composite material and multi-layer injection method thereof Download PDFInfo
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- LU505058B1 LU505058B1 LU505058A LU505058A LU505058B1 LU 505058 B1 LU505058 B1 LU 505058B1 LU 505058 A LU505058 A LU 505058A LU 505058 A LU505058 A LU 505058A LU 505058 B1 LU505058 B1 LU 505058B1
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- composite material
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- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 87
- 239000002131 composite material Substances 0.000 title claims abstract description 81
- 239000000203 mixture Substances 0.000 title claims abstract description 38
- 238000009472 formulation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 11
- 238000002347 injection Methods 0.000 title claims description 9
- 239000007924 injection Substances 0.000 title claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 35
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- -1 polypropylene Polymers 0.000 claims abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 11
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 21
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000002105 nanoparticle Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000011282 treatment Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 150000003751 zinc Chemical class 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
- B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2310/00—Masterbatches
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The present disclosure relates to the technical field of composite materials, and specifically relates to a formulation for an anti-aging composite material, composed of the following composition in parts by weight: 70-80 parts by weight of polypropylene masterbatch, 60-75 parts by weight of low-density polyethylene masterbatch, 10-15 parts by weight of an anti-aging agent, 7-9 parts by weight of an accelerant, 5-8 parts by weight of a dispersant, 3-6 parts by weight of a ubricant, 1.5-3 parts by weight of an internal mold release, and 1-1.5 parts by weight of a separant. The existing composite materials are prone to aging after long-term use, resulting in the reduction of performance, while the present disclosure is capable of effectively solving the problem of poor anti-aging performance of the existing composite materials.
Description
FORMULATION FOR ANTI-AGING COMPOSITE MATERIAL AND MULTI-LAYER
INJECTION METHOD THEREOF
[0001] The present disclosure relates to the technical field of composite materials, and specifically relates to a formulation for an anti-aging composite material and a multi-layer injection method thereof.
[0002] Composite materials are new materials produced by optimizing and combining different material components via the advanced material preparation technique. However, the existing composite materials are prone to aging after long-term use, resulting in the reduction of performance. Thus, the existing composite materials have poor anti-aging performance.
[0003] Therefore, a formulation for an anti-aging composite material and a multi-layer injection method thereof are needed to solve the above-mentioned issues in the background.
[0004] To solve the issues described in the background, the present disclosure provides a formulation for an anti-aging composite material and a multi-layer injection method thereof.
[0005] To achieve the above object, the technical solutions employed by the present disclosure are as follows:
[0006] The formulation for the anti-aging composite material is composed of the following composition in parts by weight: 70-80 parts by weight of polypropylene masterbatch, 60-75 parts by weight of low-density polyethylene masterbatch, 10-15 parts by weight of an anti-aging agent, 7-9 parts by weight of an accelerant, 5-8 parts by weight of a dispersant, 3-6 parts by weight of a lubricant, 1.5-3 parts by weight of an internal mold release, and 1-1.5 parts by weight of a separant.
[0007] The method for multi-layer injection of the formulation for the anti-aging composite material comprises the following steps:
[0008] S1. feeding an anti-aging composite material masterbatch into a heating tank to heat and melt into a melted anti-aging composite material, and then feeding the melted anti-aging composite material into an extruder;
[0009] S2. laying a release fabric to an inside of a mold, and then injecting the melted anti-aging composite material into the mold by the extruder to cover one-third of a space of the inside of thé/505058 mold, and heating the mold for 3-5 min; then injecting the melted anti-aging composite material into the mold by the extruder to cover one-third of the space of the inside of the mold again, and heating the mold for 8-12 min; then injecting a remaining melted anti-aging composite material into the mold by the extruder; and
[0010] S3. slowly cooling the mold to room temperature with a cooling rate of 2-3 °C/h after the melted anti-aging composite material is completely injected into the mold, and performing demolding treatment, to obtain a bulk of the anti-aging composite material.
[0011] As a preferred solution of the present disclosure, a preparation method of the anti-aging composite material masterbatch comprises: feeding the polypropylene masterbatch, the low-density polyethylene masterbatch, and the anti-aging agent into a stirrer for preheating to 80-100 °C and stirring with insulation for 5-8 min, then cooling to 40-70 °C and standing for 2-3 h, and taking out a mixture obtained; then feeding the mixture to a mixer to mix for 110-130 min, and then feeding the accelerant, the dispersant, the lubricant, the internal mold release and the separant into the mixer to continuously mix for 45-50 min with the same speed, and then feeding into a twin-screw extruder for extruding granulation, to obtain the anti-aging composite material masterbatch.
[0012] As a preferred solution of the present disclosure, the accelerant is prepared by mixing accelerant DM, accelerant NS, and accelerant D at a mass ratio of 1:0.3:1; the dispersant is organic zinc salt, the lubricant is N,N'- ethylenebis(stearamide), the internal mold release is sodium aliphatate, and the separant is calcium carbonate.
[0013] As a preferred solution of the present disclosure, a preparation method of the anti-aging agent comprises the following steps:
[0014] S11. adding nano zinc oxide into a methanol solution to stir for 40 min at a speed of 2200 r/min, to obtain a nano zinc oxide dispersion, then adjusting a pH of the nano zinc oxide dispersion to 9.7, and carrying out microwave and ultrasonic treatments for 5 min;
[0015] S12. adding an epoxidized elastomer to the nano zinc oxide dispersion, adjusting a temperature to 82 °C for 1.5 h, then filtering, and washing to make the pH to be neutral, then drying and crushing, and sieving through an 800 mesh sieve, to obtain a modified nanoparticle; and
[0016] S13. dispersing the modified nanoparticle, nano silica, and the dispersant into an ethanol solution, then adding tetraethyl orthosilicate dropwise into the ethanol solution, adding a silane coupling agent after fully reacting at room temperature, and then continuing to fully react under heating, to obtain the anti-aging agent.
[0017] As a preferred solution of the present disclosure, the dispersant in the S11 505058 polyethylene pyrrolidone, and the epoxidized elastomer in the S12 is ethylene-vinyl acetate. In the S11, a power for the microwave treatment is 300 W, a power for the ultrasonic treatment is 800 W, and an ultrasonic frequency is 30 kHz.
[0018] As a preferred solution of the present disclosure, a temperature of the twin-screw extruder for extrusion is 212-215 °C, a screw speed is 100-300 r/min, a physical size of a die lip for twin-screw extrusion is 0.2 mm-2 m, and the twin-screw extrusion is performed for 5-10 min at a pressure of 18.5-19 MPa.
[0019] As a preferred solution of the present disclosure, a temperature of the mixer for mixing is 175-180 °C, and a mixing speed is 400-480 r/min.
[0020] Compared to the prior art, the present disclosure has the following beneficial effects:
[0021] 1. In the present disclosure, the polypropylene masterbatch, the low-density polyethylene masterbatch, and the anti-aging agent are fed into the stirrer to preheat and stir and then cool, and the mixture obtained is taken out after standing. Then, the mixture is fed into the mixer for mixing, and then the accelerant, the dispersant, the lubricant, the internal mold release, and the separant are fed into the mixer for mixing at the same speed. The obtained mixture is fed into the twin-screw extruder for extruding granulation, to obtain the anti-aging composite material masterbatch. During the preparation process of the composite material, the anti-aging agent is added, and the modified nanoparticle in the anti-aging agent is capable of absorbing small-molecule by-products produced by the low-density polyethylene masterbatch and the polypropylene masterbatch, which greatly enhances the cross-linking structure in the composite material, and improves the mechanical properties, tensile strength, and tear strength of the composite material. At the same time, the epoxidized elastomer is capable of dissociating to the surface of the composite material to form a protective layer, reducing the contact between the composite material and air, and improving the overall anti-aging performance of the composite material. Nano silica is capable of combining with the epoxidized elastomer to form a copolymer to effectively absorb ultraviolet rays, improve the anti-ultraviolet ability of the composite material, and further improve the anti-aging performance of the composite material.
[0022] 2. In the present disclosure, the melted anti-aging composite material is obtained by heating the anti-aging composite material masterbatch in the heating tank. Then, the melted anti-aging composite material is fed into the extruder, and the release fabric is laid inside of the mold. The melted anti-aging composite material is injected into the mold by the extruder to cover one-third of the space of the inside the mold, and the mold is heated for a period of time. Then, the melted anti-aging composite material is injected into the mold by the extruder to cover one-third of the space of the inside the mold again, and the mold is heated for a period of time!/505058
At last, the remaining melted anti-aging composite material is injected into the mold by the extruder, and the temperature is slowly cooled to room temperature for demolding treatment, to obtain the bulk of the anti-aging composite material. The multi-layer injection method adopted for molding is capable of effectively releasing the internal stress generated during the molding of the composite material, and improving the strength of the composite material.
[0023] The technical solutions of the present disclosure will be described clearly and completely with reference to the examples below. Obviously, the described examples are only part but not all of the examples of the present disclosure. Based on the examples of the present disclosure, all other examples obtained by those ordinarily skilled in the art without creative work shall fall within the protection scope of the present disclosure.
[0024] Unless otherwise specified, all technical and scientific terms used in the present disclosure have the same meanings as commonly understood by those ordinarily skilled in the art.
The terms used herein are only used to describe the specific examples, not intended to limit the present disclosure. The terms "and/or" used herein include any and all combinations of one or more related listed items.
[0025] The technical solution provided by the present disclosure is as follows:
[0026] The formulation for the anti-aging composite material includes 70-80 parts by weight of the polypropylene masterbatch, 60-75 parts by weight of the low-density polyethylene masterbatch, 10-15 parts by weight of the anti-aging agent, 7-9 parts by weight of the accelerant, 5-8 parts by weight of the dispersant, 3-6 parts by weight of the lubricant, 1.5-3 parts by weight of the internal mold release, and 1-1.5 parts by weight of the separant.
[0027] The method for multi-layer injection of the formulation for the anti-aging composite material includes the following steps:
[0028] S1. The anti-aging composite material masterbatch is fed into the heating tank to heat and melt into the melted anti-aging composite material, and then the melted anti-aging composite material is fed into the extruder.
[0029] S2. The release fabric is laid to the inside of the mold, and then the melted anti-aging composite material is injected into the mold by the extruder to cover one-third of the space of the inside of the mold, and the mold is heated for 3-5 min. Then, the melted anti-aging composite material is injected into the mold by the extruder again to cover one-third of the space of the inside of the mold again, and the mold is heated for 8-12 min. Then, the remaining melted anti-aging composite material is injected into the mold by the extruder. LU505058
[0030] S3. The mold is slowly cooled to room temperature with the cooling rate of 2-3 °C/h after the melted anti-aging composite material is completely injected into the mold, and demolding treatment is performed, to obtain the bulk of the anti-aging composite material. 5 [0031] Further, the preparation method of the anti-aging composite material masterbatch is as follows: The polypropylene masterbatch, the low-density polyethylene masterbatch, and the anti-aging agent are fed into the stirrer to preheat to 80-100 °C and stir with insulation for 5-8 min, then cool to 40-70 °C and stand for 2-3 h, and then the mixture obtained is taken out. Then, the mixture is fed to the mixer to mix for 110-130 min, and the accelerant, the dispersant, the lubricant, the internal mold release and the separant are fed into the mixer to continuously mix for 45-50 min at the same speed. Then, the obtained mixture is fed into the twin-screw extruder for extruding granulation, to obtain the anti-aging composite material masterbatch.
[0032] Further, the accelerant is prepared by mixing the accelerant DM, the accelerant NS, and the accelerant D at the mass ratio of 1:0.3:1. The dispersant is organic zinc salt, the lubricant is
N,N'- ethylenebis(stearamide), the internal mold release is sodium aliphatate, and the separant is calcium carbonate.
[0033] Further, the preparation method of the anti-aging agent includes the following steps:
[0034] S11. Nano zinc oxide is added into the methanol solution to stir for 40 min at the speed of 2200 r/min, to obtain the nano zinc oxide dispersion. Then, the pH of the nano zinc oxide dispersion is adjusted to 9.7, and then the microwave and ultrasonic treatments are performed for 5 min.
[0035] S12. The epoxidized elastomer is added to the nano zinc oxide dispersion, and the temperature is adjusted to 82 °C for 1.5 h. Then, after filtering, washing is performed to make the pH to be neutral. Then, drying, crushing, and sieving through the 800 mesh sieve are performed, to obtain the modified nanoparticle.
[0036] S13. The modified nanoparticle, nano silica, and the dispersant are dispersed into the ethanol solution, tetraethyl orthosilicate is added dropwise into the ethanol solution, and the silane coupling agent is added after fully reacting at room temperature, and then the full reaction is performed continuously under heating, to obtain the anti-aging agent.
[0037] Further, the dispersant in the S11 is polyethylene pyrrolidone, and the epoxidized elastomer in the S12 is ethylene-vinyl acetate. In the S11, the power for the microwave treatment is 300 W, the power for the ultrasonic treatment is 800 W, and the ultrasonic frequency is 30 kHz.
[0038] Further, the temperature of the twin-screw extruder for extrusion is 212-215 °C, the screw speed is 100-300 r/min, the physical size of the die lip for twin-screw extrusion is 04/505058 mm-2 m, and the twin-screw extrusion is performed for 5-10 min at the pressure of 18.5-19 MPa.
[0039] Further, the temperature of the mixer for mixing is 175-180 °C, and the mixing speed is 400-480 r/min.
[0040] Example 1
[0041] Nano zinc oxide is added into the methanol solution to stir for 40 min at the speed of 2200 r/min, to obtain the nano zinc oxide dispersion. Then, the pH of the nano zinc oxide dispersion is adjusted to 9.7, and then the microwave and ultrasonic treatments are performed for 5 min. The power for the microwave treatment is 300 W, the power for the ultrasonic treatment is 800 W, and the ultrasonic frequency is 30 kHz. The epoxidized elastomer is added to the nano zinc oxide dispersion, and the temperature is adjusted to 82 °C for 1.5 h. Then, ater filtering, washing is performed to make the pH to be neutral. Then drying, crushing, and sieving through the 800 mesh sieve are performed, to obtain the modified nanoparticle. The modified nanoparticle, nano silica, and the dispersant are dispersed into the ethanol solution, and the dispersant is polyethylene pyrrolidone. Then, tetraethyl orthosilicate is added dropwise into the ethanol solution, and the silane coupling agent is added after fully reacting at room temperature, and then the full reaction is performed continuously under heating, to obtain the anti-aging agent.
[0042] 70 parts by weight of the polypropylene masterbatch, 60 parts by weight of the low-density polyethylene masterbatch, 10 parts by weight of the anti-aging agent, 7 parts by weight of the accelerant, 5 parts by weight of the dispersant, 3 parts by weight of the lubricant, 1.5 parts by weight of the internal mold release, and 1 parts by weight of the separant are weighed. The accelerant is prepared by mixing the accelerant DM, the accelerant NS, and the accelerant D at the mass ratio of 1:0.3:1. The dispersant is organic zinc salt, the lubricant is N,N"- ethylenebis(stearamide), the internal mold release is sodium aliphatate, and the separant is calcium carbonate.
[0043] The polypropylene masterbatch, the low-density polyethylene masterbatch, and the anti-aging agent are fed into the stirrer to preheat to 80 °C and stir with insulation for 5 min, and then cool to 40 °C, and the mixture obtained is taken out after standing for 2 h. Then, the mixture is fed to the mixer to mix for 110 min, and then the accelerant, the dispersant, the lubricant, the internal mold release and the separant are fed into the mixer to continuously mix for 45 min at the same speed. The temperature of the mixer for mixing is 180 °C, and the mixing speed is 480 r/min. Then, the obtained mixture is fed into the twin-screw extruder for extruding granulation at 215 °C and 19 MPa for 5 min with the screw speed of 300 r/min, to obtain the anti-aging composite material masterbatch.
[0044] The anti-aging composite material masterbatch is fed into the heating tank to heat add/505058 melt into the melted anti-aging composite material. Then, the melted anti-aging composite material is fed into the extruder, and the release fabric is laid inside of the mold, the melted anti-aging composite material is injected into the mold by the extruder to cover one-third of the space of the inside the mold, and the mold is heated for 3 min. Then, the melted anti-aging composite material is injected into the mold by the extruder to cover one-third of the space of the inside the mold again, and the mold is heated for 8 min. At last, the remaining melted anti-aging composite material is completely injected into the mold by the extruder, and then the temperature is slowly cooled to room temperature at the cooling rate of 2 °C/h for demolding treatment, to obtain the bulk of the anti-aging composite material.
[0045] Although the examples of the present disclosure have been fully shown and described, it shall be understood that various changes, modifications, replacements and variations to the examples can be made by those ordinarily skilled in the art without deviating from the principle and spirit of the present disclosure. The scope of the present disclosure shall be defined by the appended claims and their equivalents.
Claims (8)
1. A formulation for an anti-aging composite material, composed of the following composition in parts by weight: 70-80 parts by weight of polypropylene masterbatch, 60-75 parts by weight of low-density polyethylene masterbatch, 10-15 parts by weight of an anti-aging agent, 7-9 parts by weight of an accelerant, 5-8 parts by weight of a dispersant, 3-6 parts by weight of a lubricant, 1.5-3 parts by weight of an internal mold release, and 1-1.5 parts by weight of a separant.
2. A method for multi-layer injection of the formulation for the anti-aging composite material, wherein the method comprises the following steps:
S1. feeding an anti-aging composite material masterbatch into a heating tank to heat and melt into a melted anti-aging composite material, and then feeding the melted anti-aging composite material into an extruder;
S2. laying a release fabric to an inside of a mold, and then injecting the melted anti-aging composite material into the mold by the extruder to cover one-third of a space of the inside of the mold, and heating the mold for 3-5 min; then injecting the melted anti-aging composite material into the mold by the extruder to cover one-third of the space of the inside of the mold again, and heating the mold for 8-12 min; then injecting a remaining melted anti-aging composite material into the mold by the extruder; and
S3. slowly cooling the mold to room temperature with a cooling rate of 2-3 °C/h after the melted anti-aging composite material is completely injected into the mold, and performing demolding treatment, to obtain a bulk of the anti-aging composite material.
3. The formulation for the anti-aging composite material according to claim 1, wherein a preparation method of the anti-aging composite material masterbatch comprises: feeding the polypropylene masterbatch, the low-density polyethylene masterbatch, and the anti-aging agent into a stirrer for preheating to 80-100 °C and stirring with insulation for 5-8 min, then cooling to 40-70 °C and standing for 2-3 h, and taking out a mixture obtained; then feeding the mixture to a mixer to mix for 110-130 min, and then feeding the accelerant, the dispersant, the lubricant, the internal mold release and the separant into the mixer to continuously mix for 45-50 min with the same speed, and then feeding into a twin-screw extruder for extruding granulation, to obtain the anti-aging composite material masterbatch.
4. The formulation for the anti-aging composite material according to claim 1, wherein the accelerant is prepared by mixing accelerant DM, accelerant NS, and accelerant D at a mass ratio of 1:0.3:1; the dispersant is organic zinc salt, the lubricant is N,N'- ethylenebis(stearamide), the internal mold release is sodium aliphatate, and the separant is calcium carbonate. LUS05058
5. The formulation for the anti-aging composite material according to claim 1, wherein a preparation method of the anti-aging agent comprises the following steps:
S11. adding nano zinc oxide into a methanol solution to stir for 40 min at a speed of 2200 r/min, to obtain a nano zinc oxide dispersion, then adjusting a pH of the nano zinc oxide dispersion to 9.7, and carrying out microwave and ultrasonic treatments for 5 min;
S12. adding an epoxidized elastomer to the nano zinc oxide dispersion, and adjusting a temperature to 82 °C for 1.5 h, then filtering, and washing to make the pH to be neutral, then drying and crushing, and sieving through an 800 mesh sieve, to obtain a modified nanoparticle; and
S13. dispersing the modified nanoparticle, nano silica, and the dispersant into an ethanol solution, then adding tetraethyl orthosilicate dropwise into the ethanol solution, adding a silane coupling agent after fully reacting at room temperature, and then continuing to fully react under heating, to obtain the anti-aging agent.
6. The formulation for the anti-aging composite material according to claim 5, wherein the dispersant in the S11 is polyethylene pyrrolidone, and the epoxidized elastomer in the S12 is ethylene-vinyl acetate; in the S11, a power for the microwave treatment is 300 W, a power for the ultrasonic treatment is 800 W, and an ultrasonic frequency is 30 kHz.
7. The formulation for the anti-aging composite material according to claim 3, wherein a temperature of the twin-screw extruder for extrusion is 212-215 °C, a screw speed is 100-300 r/min, a physical size of a die lip for twin-screw extrusion is 0.2 mm-2 m, and the twin-screw extrusion is performed for 5-10 min at a pressure of 18.5-19 MPa.
8. The formulation for the anti-aging composite material according to claim 3, wherein a temperature of the mixer for mixing is 175-180 °C, and a mixing speed is 400-480 r/min.
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