CN110791016A - Preparation method of vehicle bottom guard plate, vehicle bottom guard plate and vehicle - Google Patents
Preparation method of vehicle bottom guard plate, vehicle bottom guard plate and vehicle Download PDFInfo
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- CN110791016A CN110791016A CN201911032020.6A CN201911032020A CN110791016A CN 110791016 A CN110791016 A CN 110791016A CN 201911032020 A CN201911032020 A CN 201911032020A CN 110791016 A CN110791016 A CN 110791016A
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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
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention provides a preparation method of a vehicle bottom guard plate, the vehicle bottom guard plate and a vehicle, wherein the preparation method comprises the following steps: weighing raw materials, wherein the raw materials comprise: 30-70 parts of polypropylene resin; 10-18 parts of a compatilizer; 0.5-1 part of antioxidant; 0.5-1 part by weight of lubricant; 1-3 parts of a coupling agent; 20-40 parts of glass fiber; 5-10 parts of a filler; respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; and melting the mixture, adding the melted mixture into a bottom guard plate die, and performing compression molding to obtain the bottom guard plate. According to the preparation method of the bottom guard plate, the performance of the bottom guard plate prepared by the raw materials and the method is good, the obtained bottom guard plate is light in weight and good in impact resistance, the energy consumption and the production cost in the whole production process of the bottom guard plate are low, and the performance of the bottom guard plate can meet the performance requirements of the off-road vehicle.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a preparation method of a vehicle bottom guard plate, the vehicle bottom guard plate and a vehicle.
Background
The automobile bottom guard board is positioned at the bottom of the whole automobile and is mainly used for protecting the engine and decorating the whole automobile. The cross-country vehicle has higher requirements on the protective performance of the bottom guard plate due to the consideration of special road conditions, wherein the selection of the material of the bottom guard plate is particularly key, and the GMT material with excellent comprehensive performance is generally selected as the bottom guard plate of the cross-country vehicle at present. The GMT bottom guard plate is generally formed by molding a GMT sheet, softening the GMT sheet, and then putting the softened GMT into a mold for compression molding.
At present, the cross-country vehicle bottom guard plate is made of GMT materials, a light weight design and a cost reduction space are not formed in the GMT materials through compression molding, the obtained bottom guard plate is heavy in weight, impact resistance is poor, energy consumption and production cost in the whole bottom guard plate production process are high, and the performance of the existing bottom guard plate cannot meet the performance requirements of the cross-country vehicle.
Disclosure of Invention
In view of the above, the invention provides a preparation method of a vehicle floor fender, the vehicle floor fender and a vehicle.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to the first aspect of the invention, the preparation method of the vehicle bottom guard plate comprises the following steps:
weighing raw materials, wherein the raw materials comprise:
30-70 parts of polypropylene resin;
10-18 parts of a compatilizer;
0.5-1 part of antioxidant;
0.5-1 part by weight of lubricant;
1-3 parts of a coupling agent;
20-40 parts of glass fiber;
5-10 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder;
and melting the mixture, adding the melted mixture into a bottom guard plate die, and performing compression molding to obtain the bottom guard plate.
Further, the polypropylene resin has a melt index of 120g/10min or more;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises at least one of hindered phenol antioxidant and phosphite antioxidant;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the filler comprises at least one of nano talcum powder and hollow glass beads.
Further, the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
Further, the particle size of the nano talcum powder is 20-100 nm; the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes; the glass fiber is untwisted roving with the diameter of 13 mu m.
Further, the raw materials are respectively added into a double-screw extruder to be mixed, and a mixture is obtained from the double-screw extruder, wherein the mixture comprises the following components:
adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder.
Further, 62 parts by weight of a polypropylene resin;
10 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
20 parts of glass fiber;
5 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
Further, 44 parts by weight of a polypropylene resin;
15 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
30 parts of glass fiber;
8 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
Further, 28 parts by weight of a polypropylene resin;
28 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
3 parts of a coupling agent;
40 parts of glass fiber;
10 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
The vehicle floor fender according to the embodiment of the second aspect of the invention is prepared according to the preparation method in the above embodiment.
A vehicle according to an embodiment of the third aspect of the invention includes the floor panel in the above-described embodiment.
The technical scheme of the invention has the following beneficial effects:
according to the preparation method of the bottom guard plate, the performance of the bottom guard plate prepared by the raw materials and the method is good, the obtained bottom guard plate is light in weight and good in impact resistance, the energy consumption and the production cost in the whole production process of the bottom guard plate are low, and the performance of the bottom guard plate can meet the performance requirements of the off-road vehicle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
The following describes a method for manufacturing a vehicle floor fender according to an embodiment of the present invention in detail.
The preparation method of the vehicle bottom guard plate comprises the following steps: weighing raw materials, wherein the raw materials comprise: 30-70 parts of polypropylene resin, 10-18 parts of compatilizer, 0.5-1 part of antioxidant, 0.5-1 part of lubricant, 1-3 parts of coupling agent, 20-40 parts of glass fiber and 5-10 parts of filler; respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate; the polypropylene resin is high-fluidity high-crystallization copolymerized polypropylene, the melt index of the polypropylene resin can be more than or equal to 120g/10min, the resin has good fluidity, the resin is convenient to be better infiltrated with fibers, and the mechanical property of the material is improved; the compatilizer can be maleic anhydride grafted polypropylene, so that the interface bonding capacity of resin and fiber is improved, and the mechanical property of the material is improved; the antioxidant can comprise at least one of hindered phenol antioxidant and phosphite antioxidant, for example, the antioxidant comprises hindered phenol antioxidant and phosphite antioxidant, the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1:2, the antioxidant can also be reasonably selected according to actual needs, and the antioxidant capacity of the material can be enhanced through the reasonable proportion of the antioxidant; the lubricant can be calcium stearate, so that the lubrication between mixed materials is increased, the lubrication between the materials and equipment is increased, and the product molding is facilitated; the coupling agent can be a silane coupling agent, improves the surface activity of the fiber and the filler, can be well combined with the resin, and enhances the performance of the mixed material; the filler may include at least one of nano talc and hollow glass beads.
The bottom guard plate prepared by the raw materials and the method has good performance, the obtained bottom guard plate has light weight and good impact resistance, the energy consumption and the production cost in the whole production process of the bottom guard plate are low, and the performance of the bottom guard plate can meet the performance requirement of the off-road vehicle. The cross-country vehicle bottom guard plate is prepared by selecting high-performance polypropylene resin, nano talcum powder and high-strength hollow glass beads, mixing the high-performance polypropylene resin, the nano talcum powder and the high-strength hollow glass beads on line through a screw extruder and high-performance glass fibers to form a low-density high-performance mixed material, directly adding the mixed material into a molding press to mold the cross-country vehicle bottom guard plate, and compared with the prior art, the performance requirement of the cross-country vehicle bottom guard plate can be met, and the light weight and the low cost can be realized.
In some embodiments of the invention, the particle size of the nano talc powder can be 20-100nm, which enhances the strength and toughness of the material; the compression strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes, so that the hollow glass beads are not damaged by pressure in the processing process and are favorably dispersed in a mixed material; the glass fiber can be twistless roving with the diameter of 13 mu m, and the performance of the mixed material is improved.
In the embodiment of the invention, the raw materials are respectively added into a double-screw extruder to be mixed, and the mixture is obtained from the double-screw extruder, and the method comprises the following steps: adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder.
In some embodiments of the present invention, the amount of each raw material may be adjusted or selected according to the need, for example, 62 parts by weight of polypropylene resin, 10 parts by weight of compatibilizer, 0.5 part by weight of antioxidant, 0.5 part by weight of lubricant, 2 parts by weight of coupling agent, 20 parts by weight of glass fiber, and 5 parts by weight of filler, wherein the melt index of the polypropylene resin is 120g/10min, the compatibilizer is maleic anhydride-grafted polypropylene, the antioxidant comprises pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite, the mass ratio of pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite is 1:2, the lubricant is calcium stearate, the coupling agent is silane coupling agent, the glass fiber is roving with a diameter of 13 μm, the filler comprises nano hollow glass beads, the pressure-resistant strength of the nano-talc powder is 60nm, the hollow glass beads are 100MPa, the hollow glass beads are 100 mesh talc powder, and the nano talc powder is 1000 parts by mass ratio of the nano talc powder.
In one embodiment of the invention, the raw materials include 44 parts by weight of polypropylene resin, 15 parts by weight of compatilizer, 0.5 part by weight of antioxidant, 0.5 part by weight of lubricant, 2 parts by weight of coupling agent, 30 parts by weight of glass fiber and 8 parts by weight of filler, wherein the polypropylene resin has a melt index of 120g/10min, the compatilizer is maleic anhydride grafted polypropylene, the antioxidant includes pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite, the pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite are in a mass ratio of 1:2, the lubricant is calcium stearate, the coupling agent is silane coupling agent, the glass fiber is untwisted roving with a diameter of 13 μm, the filler includes nano talc powder and hollow glass microspheres, the particle size of the nano talc powder is 60nm, the compressive strength of the hollow glass microspheres is 100MPa, the number of the glass microspheres is 1000, and the hollow talc powder is 1: 2.
In another embodiment of the invention, the amount of each raw material may include 28 parts by weight of polypropylene resin, 28 parts by weight of a compatibilizer, 0.5 part by weight of an antioxidant, 0.5 part by weight of a lubricant, 3 parts by weight of a coupling agent, 40 parts by weight of glass fiber, and 10 parts by weight of a filler, wherein the melt index of the polypropylene resin is 120g/10min, the compatibilizer is maleic anhydride grafted polypropylene, the antioxidant includes pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite, the mass ratio of pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite is 1:2, the lubricant is calcium stearate, the coupling agent is a silane coupling agent, the glass fiber is untwisted roving with a diameter of 13 μm, the filler includes nano talc powder and hollow glass microspheres, the particle size of the nano talc powder is 60nm, the compressive strength of the hollow glass microspheres is 100MPa, the number of the glass microspheres is 1000, and the hollow talc powder is 1: 4.
The preparation process of the present invention is illustrated below with reference to some specific examples.
Example 1
Weighing raw materials, wherein the raw materials comprise:
30 parts by weight of polypropylene resin;
14 parts by weight of a compatilizer;
1 part by weight of antioxidant;
0.8 part by weight of lubricant;
1 part by weight of a coupling agent;
30 parts of glass fiber;
10 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the melt index of the polypropylene resin is equal to 140g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 20-100nm, the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes;
the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
Example 2
Weighing raw materials, wherein the raw materials comprise:
50 parts by weight of polypropylene resin;
14 parts by weight of a compatilizer;
0.7 part by weight of antioxidant;
0.8 part by weight of lubricant;
2 parts of a coupling agent;
30 parts of glass fiber;
10 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder;
melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the melt index of the polypropylene resin is equal to 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 20-100nm, the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1200 meshes;
the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
Example 3
Weighing raw materials, wherein the raw materials comprise:
50 parts by weight of polypropylene resin;
18 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
1 part by weight of a lubricant;
2 parts of a coupling agent;
20 parts of glass fiber;
5 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder;
melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the melt index of the polypropylene resin is equal to 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 20-100nm, the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes;
the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
Example 4
Weighing raw materials, wherein the raw materials comprise:
70 parts by weight of polypropylene resin;
10 parts by weight of a compatilizer;
0.7 part by weight of antioxidant;
0.5 part by weight of a lubricant;
3 parts of a coupling agent;
40 parts of glass fiber;
8 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder;
and melting the mixture, adding the melted mixture into a bottom guard plate die, and performing compression molding to obtain the bottom guard plate.
Wherein the melt index of the polypropylene resin is equal to 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 20-100nm, the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes;
the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
Example 5
Weighing raw materials, wherein the raw materials comprise:
62 parts by weight of polypropylene resin;
10 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
20 parts of glass fiber;
5 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
Example 6
Weighing raw materials, wherein the raw materials comprise:
44 parts by weight of polypropylene resin;
15 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
30 parts of glass fiber;
8 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder;
melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
Example 7
Weighing raw materials, wherein the raw materials comprise:
28 parts by weight of polypropylene resin;
28 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
3 parts of a coupling agent;
40 parts of glass fiber;
10 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
Example 8
Weighing raw materials, wherein the raw materials comprise:
44 parts by weight of polypropylene resin;
15 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
30 parts of glass fiber;
8 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder; adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder;
melting the mixture and adding the melted mixture into a bottom guard plate die for compression molding to obtain a bottom guard plate;
wherein the polypropylene resin has a melt index of 150g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 120MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
The floor sheathing prepared by the method of the above examples 1 to 8 has excellent properties, as specified in the following table:
as can be seen from the performance test results in the table, the mechanical strength performance of the bottom guard plate is better under the condition of lower density, and the bottom guard plate has higher impact resistance and can meet the performance requirements of the off-road vehicle.
The embodiment of the invention also provides a vehicle bottom guard plate, which is prepared by the preparation method in the embodiment, the performance of the bottom guard plate prepared by the raw materials and the method is better, the obtained bottom guard plate is light in weight and good in impact resistance, the energy consumption and the production cost in the whole production process of the bottom guard plate are low, and the performance of the bottom guard plate can meet the performance requirements of the off-road vehicle.
The embodiment of the invention also provides a vehicle which comprises the bottom guard plate in the embodiment.
The vehicle according to the embodiment of the invention comprises the bottom guard plate according to the embodiment, and the bottom guard plate according to the embodiment of the invention has the technical effects, so the vehicle according to the embodiment of the invention also has the corresponding technical effects that the bottom guard plate has better performance, the obtained bottom guard plate has light weight and good impact resistance, and the performance of the bottom guard plate can meet the performance requirements of the off-road vehicle.
Other structures and operations of the vehicle according to the embodiment of the present invention will be understood and readily implemented by those skilled in the art, and thus will not be described in detail.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A preparation method of a vehicle bottom guard plate is characterized by comprising the following steps:
weighing raw materials, wherein the raw materials comprise:
30-70 parts of polypropylene resin;
10-18 parts of a compatilizer;
0.5-1 part of antioxidant;
0.5-1 part by weight of lubricant;
1-3 parts of a coupling agent;
20-40 parts of glass fiber;
5-10 parts of a filler;
respectively adding the raw materials into a double-screw extruder for mixing to obtain a mixture from the double-screw extruder;
and melting the mixture, adding the melted mixture into a bottom guard plate die, and performing compression molding to obtain the bottom guard plate.
2. The production method according to claim 1,
the melt index of the polypropylene resin is greater than or equal to 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises at least one of hindered phenol antioxidant and phosphite antioxidant;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the filler comprises at least one of nano talcum powder and hollow glass beads.
3. The preparation method according to claim 2, wherein the antioxidant comprises a hindered phenol antioxidant and a phosphite antioxidant, and the mass ratio of the hindered phenol antioxidant to the phosphite antioxidant is 1: 2.
4. The preparation method according to claim 2, wherein the particle size of the nano talc is 20 to 100 nm; the compressive strength of the hollow glass beads is higher than 100MPa, and the mesh number of the hollow glass beads is larger than 1000 meshes; the glass fiber is untwisted roving with the diameter of 13 mu m.
5. The method of claim 1, wherein the raw materials are separately fed into a twin screw extruder and mixed to obtain a blend from the twin screw extruder, comprising:
adding the polypropylene resin, the compatilizer, the antioxidant and the lubricant at the beginning stage of a double-screw extruder, adding the glass fiber soaked with the coupling agent in the middle of the double-screw extruder, adding the filler soaked with the coupling agent at the tail end of the double-screw extruder, and obtaining a mixture from the double-screw extruder.
6. The production method according to claim 1,
62 parts by weight of polypropylene resin;
10 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
20 parts of glass fiber;
5 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
7. The production method according to claim 1,
44 parts by weight of polypropylene resin;
15 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
2 parts of a coupling agent;
30 parts of glass fiber;
8 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
8. The production method according to claim 1,
28 parts by weight of polypropylene resin;
28 parts by weight of a compatilizer;
0.5 part by weight of antioxidant;
0.5 part by weight of a lubricant;
3 parts of a coupling agent;
40 parts of glass fiber;
10 parts of a filler;
wherein the polypropylene resin has a melt index of 120g/10 min;
the compatilizer is maleic anhydride grafted polypropylene;
the antioxidant comprises pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [2, 4-di-tert-butylphenyl ] phosphite, and the mass ratio of the pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] to the tris [2, 4-di-tert-butylphenyl ] phosphite is 1: 2;
the lubricant is calcium stearate;
the coupling agent is a silane coupling agent;
the glass fiber is untwisted roving with the diameter of 13 mu m;
the filler comprises nano talcum powder and hollow glass beads, the particle size of the nano talcum powder is 60nm, the compressive strength of the hollow glass beads is 100MPa, the mesh number of the hollow glass beads is 1000 meshes, and the mass ratio of the nano talcum powder to the hollow glass beads is 1: 4.
9. A vehicle floor sheathing panel, characterized by being produced according to the production method of any one of claims 1 to 8.
10. A vehicle comprising the floor sheathing of claim 9.
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