CN116376133A - Wear-resistant and high-temperature-resistant plastic lining material and preparation method thereof - Google Patents
Wear-resistant and high-temperature-resistant plastic lining material and preparation method thereof Download PDFInfo
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- CN116376133A CN116376133A CN202211715774.3A CN202211715774A CN116376133A CN 116376133 A CN116376133 A CN 116376133A CN 202211715774 A CN202211715774 A CN 202211715774A CN 116376133 A CN116376133 A CN 116376133A
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- 239000000463 material Substances 0.000 title claims abstract description 74
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- 239000004033 plastic Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title abstract description 18
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 17
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- 238000004132 cross linking Methods 0.000 claims description 6
- 239000004595 color masterbatch Substances 0.000 claims 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 claims description 3
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- 229920000728 polyester Polymers 0.000 claims description 3
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
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- 239000000243 solution Substances 0.000 description 50
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 32
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- 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 8
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 8
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to the field of plastic lining materials, and discloses a wear-resistant high-temperature-resistant plastic lining material and a preparation method thereof. The invention discloses a plastic lining material which comprises the following components in parts by weight: 70-95 parts of PE resin, 5-15 parts of polyurethane resin, 10-16 parts of metallic carbon black master batch, 5-20 parts of silane coupling agent, 1-8 parts of supplementary filler, 1-3 parts of cross-linking agent, 2-5 parts of auxiliary cross-linking agent and 1.4-8 parts of processing aid. The plastic lining material provided by the invention takes PE resin as a matrix resin material, has certain wear resistance and thermal aging resistance, and improves the wear resistance and high temperature resistance by adding 3-6 parts of metallic carbon black master batch.
Description
Technical Field
The invention relates to the field of plastic lining materials, in particular to a wear-resistant high-temperature-resistant plastic lining material and a preparation method thereof.
Background
The lining plastic product is a workpiece which takes metal material as a basic medium, is coated with thermoplastic material with excellent inner surface or outer surface, and has the chemical resistance and other properties of plastic while keeping good metal mechanical property after lining plastic or rotational molding process. For example, metal is combined with a plastic-lined material, such as metal combined with PE resin, to form a liner sheet or pipe.
In the prior lining material, the requirements can be met in the common use process, but the performance of the lining material can not meet the use requirements in the specific use environment. When the lining board or the pipe is used in a higher temperature environment, the ageing resistance and the high temperature resistance determined by the material of the resin cannot meet the requirements.
The Chinese patent with the application publication number of CN109485981A discloses a steel lining plastic fluoroplastic material and a preparation method thereof, and the disclosed steel lining plastic fluoroplastic material has the characteristics of good processing fluidity and stable performance, and comprises the following raw materials: 100 parts of ethylene-tetrafluoroethylene copolymer, 0.5-3 parts of heat stabilizer, 1-3 parts of cross-linking agent, 0.5-1 part of modified graphene, 10-20 parts of filler, 1-5 parts of impact modifier and 1-5 parts of dispersing agent. But the high temperature resistance still cannot meet the requirement of high temperature operation.
Therefore, development of a new high-temperature-resistant plastic lining material is needed, so that the plastic lining material can adapt to specific occasions such as high-temperature operation and the like, and meets the requirements of industrial production operation.
Disclosure of Invention
In order to solve the technical problems, the invention provides a wear-resistant high-temperature-resistant plastic lining material and a preparation method thereof.
The specific technical scheme of the invention is as follows:
on one hand, the invention provides a wear-resistant and high-temperature-resistant lining plastic material, which comprises the following components in parts by weight: 70-95 parts of PE resin, 5-15 parts of polyurethane resin, 5-20 parts of silane coupling agent, 1-8 parts of supplementary filler, 1-3 parts of cross-linking agent, 2-5 parts of auxiliary cross-linking agent and 1.4-8 parts of processing aid.
Specifically, the plastic lining material also comprises a metallic carbon black master batch, wherein the mass ratio of the metallic carbon black master batch to the PE resin is 10-16:70-95.
In the wear-resistant and high-temperature-resistant lining plastic material, PE resin is used as a matrix resin material, the lining plastic material has certain wear resistance and thermal aging resistance, 70-95 parts of PE resin is added to obtain the lining plastic material with good high-temperature resistance through crosslinking prepared by the method, and 5-15 parts of polyurethane resin is added to further effectively improve the tear resistance and wear resistance of the lining plastic material.
In addition, the invention also provides a metallic carbon black master batch, and the wear resistance and the high temperature resistance of the plastic lining material are further improved by adding 3-6 parts of the metallic carbon black master batch. In the plastic lining material, the addition of metallic zinc and carbon black is beneficial to improving the wear resistance and high temperature resistance of the material. The carbon black is added into the polymer matrix in a particle state, the carbon black with larger addition amount is difficult to be well dispersed, and the uniform dispersion of the carbon black is difficult to be ensured, and in the finished product of the plastic lining material, if the carbon black is not uniform, the carbon black is easy to crack and other adverse effects can be caused. If the metal zinc is directly added, the high temperature resistance of the obtained plastic lining material cannot be improved due to poor compatibility with PE resin, but the plastic lining material has a reduced reaction. In the metallic carbon black master batch provided by the invention, the main active ingredients are metallic zinc and carbon black, and the metallic zinc and the carbon black are added in the form of metallic carbon black master batch, so that the compatibility of metal and PE resin is improved, and the high self-polymerization performance of the carbon black is improved. The polyurethane resin has better matching effect with the metallic carbon black master batch provided by the application as the reinforcing resin.
Specifically, the invention provides a preparation method of metallic carbon black master batch, which comprises the following steps:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust pH to 8.0-10.3, and reacting at 60-70 ℃ for 2-3 h to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide (1-1.6 g) (15-18 mL) in a mass-volume ratio of 5mL, and stirring for 1-1.5 h to obtain ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a mass ratio of 1-1.05g:70mL, adding reactive carbon black, carrying out ultrasonic treatment for 20-30min, adding ligand solution, stirring for 2-4h at 65-75 ℃, adding p-xylylenediamine solution, adding Zn2+ ethanol solution, reactive carbon black, ligand solution and p-xylylenediamine solution, wherein the mass ratio of the two is 1:3-4:2-3:0.5-0.7,heating to 120-135 ℃ and stirring for 3-4.5h to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 6-7:4-5.5:1, preserving the temperature for 16-20 h at 75-85 ℃, cooling, drying and crushing to obtain the metallic carbon black master batch.
In the process of preparing the fixed carbon black master batch, the carbon black is added into formaldehyde solution for reaction in the step (1) to prepare the carbon black with surface methylolated, namely the reactive carbon black, so as to prepare for connection with metal in the step (3). Step (2) is to prepare a ligand solution, which is the basis for attaching the dispersed metal. Step (3) with Zn 2+ As a framework core, gamma-pyrone and ethyl acetate are used as ligands for complexing, and carbon black is dispersed and isolated to form Zn during complexing 2+ The metal framework is used as a core, carbon black is fixed and dispersed, and then p-xylylenediamine is added for crosslinking and curing to form a metal-carbon black compound with zinc metal and carbon black mutually dispersed, and in the polymerization process of adding styrene monomer and initiator dicumyl peroxide, the carbon black is further dispersed along the porous framework structure of the metal-carbon black compound, so that the prepared metal carbon black master batch has excellent dispersing effect when in use, and the problem that the self-polymerization of the common carbon black reduces the material performance when in use is avoided.
Preferably, the PE resin is an LDPE resin or/and an LLDPE resin.
Preferably, the LDPE resin has a density of 0.92 to 0.933g/cm 3 A melt index of 2.5-50g/10min at 190℃and under a load of 2.16 kg;
preferably, the LLDPE resin has a density of 0.915 to 0.935g/cm 3 The LLDPE resin has a melt index of 2.0 to 20g/10min at 190℃and a load of 2.16 kg.
Preferably, the polyurethane is polyether polyurethane or/and polyester polyurethane. Because of the existence of oxygen-containing groups on polyurethane, the polyurethane has a better matching effect with the metallic carbon black master batch prepared by the method.
Specifically, the supplementary filler is one or more of calcium carbonate, talcum powder and barium sulfate.
Specifically, the processing aid is one or more of an antioxidant, a heat stabilizer, a light stabilizer, a defoaming agent and a plasticizer.
Specifically, the cross-linking agent is one or more of BPO, BPDH and HMMM, and the auxiliary cross-linking agent is one or more of DTBP, PL400 and TAIC.
On the other hand, the invention also provides a preparation method of the wear-resistant and high-temperature-resistant lining plastic material, which comprises the following steps:
s1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: and (3) the traction rotating speed is 350-800r/min and is less than or equal to 5MPa, and the premix is obtained by water cooling, drying and granulating after spline extrusion.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 360-640, the gap between the grinding discs is 20-60, and the single-layer screen is 10-50 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 60-70 ℃, preserving heat for 4-8 h, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
Compared with the prior art, the invention has the following technical effects:
(1) According to the invention, a certain amount of metallic zinc and carbon black are added, so that the prepared plastic lining material has excellent performances of wear resistance and high temperature resistance.
(2) According to the invention, the metallic zinc and the carbon black are prepared into the metallic carbon black master batch which is added into the material, so that the problem of uneven dispersion caused by high self-polymerization of the carbon black in the resin is effectively solved.
(3) According to the invention, the metallic zinc and the carbon black are prepared into the metallic carbon black master batch which is added into the material, so that the problem of poor compatibility of metals in the resin is effectively solved.
Detailed Description
The invention is further described below with reference to examples.
Example 1
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 9.0, and reacting for 3 hours at 65 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.5g to 16mL to 5mL, and stirring for 1.2h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1.05g:70mL, adding reactive carbon black, performing ultrasonic treatment for 25min, adding ligand solution, stirring at 70deg.C for 3h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.6, and the mixture is heated to 125 ℃ and stirred for 3.5 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 6:5:1, preserving the temperature at 80 ℃ for 18 hours, cooling, drying and crushing to obtain the metallic carbon black master batch.
The preparation of the wear-resistant and high-temperature-resistant lining plastic material comprises the following steps:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 14 parts of metallic carbon black master batch, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent, a crosslinking aid and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
Example 2
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 8.0, and reacting for 2 hours at 60 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to the mass-volume ratio of 1g to 15mL to 5mL, and stirring for 1h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1g to 70mL, adding reactive carbon black, performing ultrasonic treatment for 20min, adding ligand solution, stirring at 65deg.C for 2h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.5, and the mixture is heated to 120 ℃ and stirred for 3 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 6:4:1, preserving the temperature for 20 hours at 75 ℃, cooling, drying and crushing to obtain the metallic carbon black master batch.
The preparation of the wear-resistant and high-temperature-resistant lining plastic material comprises the following steps:
raw materials: 70 parts of LLDPE resin, 5 parts of polyester polyurethane, 10 parts of metallic carbon black master batch, 5 parts of vinyl triethoxysilane, 10 parts of antioxidant AT 6, 1 part of BPO, 2 parts of DTBP and 1.4 parts of barium sulfate. LLDPE resin has a density of 0.92g/cm 3 The melt index of the alloy is 2.0-20g/10min at 190 ℃ under the load of 2.16 kg.
S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: and (3) the traction rotating speed is 350-800r/min and is less than or equal to 5MPa, and the premix is obtained by water cooling, drying and granulating after spline extrusion.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 640, the gap between the grinding discs is 60, and the single-layer screen mesh is 50 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 60 ℃, preserving heat for 8 hours, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
Example 3
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH to 10.3, and reacting for 2 hours at 70 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.6g to 18mL to 5mL, and stirring for 1.5h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1g to 70mL, adding reactive carbon black, performing ultrasonic treatment for 30min, adding ligand solution, stirring at 75deg.C for 4h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:4:3:0.7, and the mixture is heated to 135 ℃ and stirred for 4.5 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 7:5.5:1, preserving the temperature for 20 hours at 85 ℃, cooling, drying and crushing to obtain the metallic carbon black master batch.
The preparation of the wear-resistant and high-temperature-resistant lining plastic material comprises the following steps:
raw materials: 95 parts of LDPE resin, 15 parts of polyether polyurethane, 16 parts of metallic carbon black master batch, 20 parts of vinyl triethoxysilane, 300 parts of antioxidant, 3 parts of BPO, 5 parts of DTBP and 8 parts of talcum powder. The density of LDPE resin is 0.933g/cm 3 Its melt index at 190℃and under a load of 2.16kg is 2.5g/10min S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: the traction rotating speed is 350-800r/min and is less than or equal to 5MPa, and the water cooling, drying and granulating are carried out after spline extrusion to obtainTo a premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 360, the gap between the grinding discs is 20, and the single-layer screen is 10 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 70 ℃, preserving heat for 4 hours, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
Example 4
The preparation of the wear-resistant and high-temperature-resistant lining plastic material comprises the following steps:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 15 parts of vinyl triethoxysilane, 10 parts of color master batch, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent and an auxiliary cross-linking agent into the premixed powder, adding the mixed powder into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
Comparative example 1 (the main difference from example 1 is that carbon black and metallic zinc are not prepared as metallic carbon black master batches) the lining plastic material is prepared:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 8 parts of carbon black, 3 parts of metallic zinc, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 It was at 190℃and 2.16The melt index under kg load was 50g/10min.
S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the plastic lining material.
Comparative example 2 (the main difference from example 1 is that carbon black and metallic zinc are prepared as a metal-carbon black composite) metal-carbon black composite preparation:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 9.0, and reacting for 3 hours at 65 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.5g to 16mL to 5mL, and stirring for 1.2h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1.05g:70mL, adding reactive carbon black, performing ultrasonic treatment for 25min, adding ligand solution, stirring at 70deg.C for 3h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.6, the temperature is raised to 125 ℃ and the mixture is stirred for 3.5 hours to obtain a metal-carbon black compound, and the metal-carbon black compound is obtained by drying and crushing.
And (3) preparation of a plastic lining material:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 14 parts of metal-carbon black compound, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. LDPE treeThe density of the fat is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyurethane, a silane coupling agent, supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent, a crosslinking aid and a metal-carbon black compound into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the plastic lining material.
Comparative example 3 (the main difference from example 1 is that the metallic carbon black master batch was added in step S1)
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 9.0, and reacting for 3 hours at 65 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.5g to 16mL to 5mL, and stirring for 1.2h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1.05g:70mL, adding reactive carbon black, performing ultrasonic treatment for 25min, adding ligand solution, stirring at 70deg.C for 3h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.6, and the mixture is heated to 125 ℃ and stirred for 3.5 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 6:5:1, preserving the temperature at 80 ℃ for 18 hours, cooling, drying and crushing to obtain the metallic carbon black master batch.
And (3) preparation of a plastic lining material:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 14 parts of metallic carbon black master batch, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyurethane, a silane coupling agent, a supplementary filler, a processing aid and metallic carbon black master batch into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent and a crosslinking assistant agent into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the plastic lining material.
Comparative example 4 (the main difference from example 1 is that polyether polyurethane was not added)
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 9.0, and reacting for 3 hours at 65 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.5g to 16mL to 5mL, and stirring for 1.2h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1.05g:70mL, adding reactive carbon black, performing ultrasonic treatment for 25min, adding ligand solution, stirring at 70deg.C for 3h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.6, and the mixture is heated to 125 ℃ and stirred for 3.5 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into the mixture according to the mass ratio of 6:5:1And (3) preserving heat for 18 hours at 80 ℃ in a mixed solution of styrene monomer and dicumyl peroxide, cooling, drying and crushing to obtain metallic carbon black master batch.
And (3) preparation of a plastic lining material:
raw materials: 85 parts of LDPE resin, 10 parts of polyether polyurethane, 14 parts of metallic carbon black master batch, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyether polyurethane, a silane coupling agent, a supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the plastic lining material.
Comparative example 5 (the main difference from example 1 is that 20 parts of polyether polyurethane was added)
Preparing metallic carbon black master batches:
(1) Adding 37wt% formaldehyde solution into carbon black, adding NaOH to adjust the pH value to 9.0, and reacting for 3 hours at 65 ℃ to obtain reactive carbon black;
(2) Mixing and dissolving gamma-pyrone, ethyl acetate and N, N-dimethylacetamide according to a mass-volume ratio of 1.5g to 16mL to 5mL, and stirring for 1.2h to obtain a ligand solution;
(3) Zn (NO) 3 ) 2 ·6H 2 Dispersing O in ethanol according to a ratio of 1.05g:70mL, adding reactive carbon black, performing ultrasonic treatment for 25min, adding ligand solution, stirring at 70deg.C for 3h, adding p-xylylenediamine solution, and Zn 2+ The mass ratio of the ethanol solution, the reactive carbon black, the ligand solution and the p-xylylenediamine solution is 1:3:2:0.6, and the mixture is heated to 125 ℃ and stirred for 3.5 hours to obtain a metal-carbon black compound; adding the metal-carbon black compound into a mixed solution of styrene monomer and dicumyl peroxide according to the mass ratio of 6:5:1, preserving the temperature at 80 ℃ for 18 hours, cooling, drying and crushing to obtain the metallic carbon black master batch.
The preparation of the wear-resistant and high-temperature-resistant lining plastic material comprises the following steps:
raw materials: 85 parts of LDPE resin, 20 parts of polyether polyurethane, 14 parts of metallic carbon black master batch, 15 parts of vinyl triethoxysilane, 300 parts of antioxidant, 4 parts of light stabilizer, 2 parts of BPO, 3 parts of DTBP and 5 parts of calcium carbonate. The density of the LDPE resin is 0.92g/cm 3 The melt index at 190℃and under a load of 2.16kg was 50g/10min.
S1: adding PE resin, polyether polyurethane, a silane coupling agent, a supplementary filler and a processing aid into a high-speed intermediate mixer for uniform mixing; then extruding by a double-screw extruder, wherein the feeding rotating speed of the double-screw extruder is as follows: 15Hz, the temperature of the control area is as follows: the melt pressure is between 90 and 230 ℃ and is: 5MPa, traction rotating speed 600r/min, water cooling, drying and granulating after spline extrusion to obtain premix.
S2: and (3) crushing the premix into powder by a grinder to obtain premix powder. The grinder parameters were: the number of teeth of the grinding disc is 500, the clearance between the grinding discs is 40, and the single-layer screen is 30 meshes.
S3: adding a cross-linking agent, an auxiliary cross-linking agent and metallic carbon black master batch into the premixed powder, adding the mixture into heating mixing container equipment, heating to 65 ℃, preserving heat for 6 hours, and cooling to obtain the plastic lining material.
Performance testing
The plastic-lined materials prepared in examples 1 to 3 and comparative examples 1 to 5 were molded, and performance test was performed, and the test results are shown in Table 1. The high temperature resistance test method comprises the following steps: the test material was subjected to heat aging at 135 ℃ for 720 hours in an air oven, and if not, the test material was judged to pass.
TABLE 1
| Tensile Strength (MPa) | Heat distortion temperature (DEG C) | High temperature resistance test | |
| Example 1 | 56 | 305 | By passing through |
| Example 2 | 54 | 295 | By passing through |
| Example 3 | 55 | 300 | By passing through |
| Example 4 | 49 | 290 | By passing through |
| Comparative example 1 | 42 | 240 | Not pass through |
| Comparative example 2 | 45 | 290 | By passing through |
| Comparative example 3 | 45 | 245 | Not pass through |
| Comparative example 4 | 41 | 240 | Not pass through |
| Comparative example 5 | 48 | 290 | By passing through |
Data analysis
(1) As is clear from Table 1, the lining plastic materials prepared in examples 1 to 4 are excellent in wear resistance and high temperature resistance.
(2) In comparison with example 1, the carbon black and metallic zinc of comparative example 1 were not prepared as metallic carbon black master batches, were directly added, and had a reduced mechanical strength and a reduced high temperature resistance, indicating that the addition of carbon black and metallic zinc alone was detrimental to the improvement of their properties, and further analysis was possible due to uneven dispersion of carbon black and/or poor compatibility of metallic zinc with the resin.
(3) Compared with example 1, the carbon black and metallic zinc of comparative example 2 are prepared into a metal-carbon black compound, which passes the test of high temperature resistance, but the wear resistance is reduced, which shows that the further preparation of the metal-carbon black compound into metallic carbon black master batch is beneficial to improving the wear resistance of the material.
(4) Compared with example 1, the metallic carbon black master batch of comparative example 3 is added in step S1, the mechanical strength is reduced, and the high temperature resistance test is not passed, which indicates that the metallic carbon black master batch needs to be added and mixed after extrusion, otherwise the action effect is affected.
(5) Comparative example 4, which does not add polyether polyurethane, has poor mechanical strength and fails the high temperature resistance test, compared with example 1, shows that the addition of a certain amount of polyurethane resin is advantageous to improve the wear resistance and high temperature resistance of the material.
(6) Compared with example 1, the polyether polyurethane is added in 20 parts in comparative example 5, the content of polyurethane resin is excessive, the mechanical strength is reduced, the polyurethane resin is unfavorable for improving the wear resistance of the material, and the addition amount of the polyurethane resin is in a proper range.
The raw materials and equipment used in the invention are common raw materials and equipment in the field unless specified otherwise; the methods used in the present invention are conventional in the art unless otherwise specified.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A wear-resistant and high-temperature-resistant plastic lining material is characterized in that: comprises the following components in parts by weight: 70-95 parts of PE resin, 5-15 parts of polyurethane resin, 5-20 parts of silane coupling agent, 1-8 parts of supplementary filler, 1-3 parts of cross-linking agent, 2-5 parts of auxiliary cross-linking agent and 1.4-8 parts of processing aid.
2. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the plastic lining material also comprises metallic carbon black master batch or color master batch;
the metal carbon black master batch comprises metal zinc and carbon black, wherein a metal framework formed by the metal zinc is used for fixedly dispersing the carbon black;
the mass ratio of the metallic carbon black master batch to the PE resin is 10-16:70-95;
the mass ratio of the color master batch to the PE resin is 6-10:70-95.
3. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the PE resin is LDPE resin or/and LLDPE resin.
4. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 3, wherein: the density of the LDPE resin is 0.92-0.933g/cm 3 The LDPE resin has a melt index of 2.5-50g/10min at 190 ℃ and under a load of 2.16 kg;
the LLDPE resin has a density of 0.915 to 0.935g/cm 3 The LLDPE resin has a melt index of 2.0 to 20g/10min at 190℃and a load of 2.16 kg.
5. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the polyurethane is polyether polyurethane or/and polyester polyurethane.
6. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the supplementary filler is one or more of calcium carbonate, talcum powder and barium sulfate.
7. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the processing aid is one or more of an antioxidant, a heat stabilizer, a light stabilizer, a defoaming agent and a plasticizer.
8. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the cross-linking agent is one or more of BPO, BPDH and HMMM.
9. A wear-resistant and high temperature-resistant lining plastic material as claimed in claim 1, wherein: the auxiliary cross-linking agent is one or more of DTBP, PL400 and TAIC.
10. A method of preparing a plastics-lined material according to any one of claims 1 to 8, characterised in that: the method comprises the following steps:
s1: uniformly mixing PE resin, polyurethane, a silane coupling agent, a supplementary filler and a processing aid, extruding, water-cooling, drying and granulating to obtain a premix;
s2: crushing the premix into powder to obtain premixed powder;
s3: adding a cross-linking agent, a crosslinking assistant agent and a fixed carbon black master batch into the premixed powder, uniformly mixing, heating, preserving heat, and cooling to obtain the wear-resistant and high-temperature-resistant plastic lining material.
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