CN114103340B - Continuous fiber reinforced thermoplastic helmet shell material and preparation method thereof - Google Patents
Continuous fiber reinforced thermoplastic helmet shell material and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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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
- C08L23/08—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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Abstract
The invention belongs to the field of functional polymer materials, and particularly provides a continuous fiber reinforced thermoplastic helmet shell material and a preparation method thereof. The continuous fiber reinforced thermoplastic helmet shell material is characterized in that when continuous fiber glass fiber cloth is used for ABS, two layers of glass fiber cloth are laid, and a high-fluidity composite layer is arranged between the two layers of glass fiber cloth. The helmet shell has the advantages that when the helmet shell is used for preparing the helmet shell through deep drawing die pressing, the two layers of glass fiber cloth are enabled to slide mutually through the high-fluidity complex between the two layers of glass fiber cloth, and the situation that the glass fiber is broken due to overhigh drawing depth is avoided. The preparation method is simple in preparation process, does not need special equipment, and is suitable for industrial large-scale production.
Description
Technical Field
The invention relates to the field of functional polymer materials, in particular to the field of composite materials for helmet shells, and particularly relates to a continuous fiber reinforced thermoplastic helmet shell material and a preparation method thereof.
Background
At present, safety helmets become an indispensable requirement for motorcycles, bicycles and electric bicycles. Particularly, with the use of a large number of pulleys, balance cars and sliding plates, the demand on the helmet is rapidly increased. Because of the characteristic that plastic is easy to be processed and formed by heat molding, most helmet materials adopt plastic materials such as ABS, PA and the like as the shell. The shell material of the helmet is required to have hardness, wear resistance, rigidity, impact resistance and the like. And a single plastic base material is difficult to meet the requirement.
In order to meet the strength requirement of the helmet shell and improve the safety, the material of the helmet shell is often required to be enhanced and modified. For example, carbon fiber, glass fiber, wood fiber, etc. are used to modify ABS, which is better in improving impact strength. The helmet shell needs enough impact strength, and is generally formed by injection molding of ABS glass fiber reinforced plastic. There are still some problems. Most of the glass fiber and the wood fiber are added in a short fiber mode, and the impact resistance of the ABS is improved. And the effect is obvious by adopting continuous fiber reinforced ABS. It is highly desirable to use continuous fibers for ABS to improve impact resistance for use in helmet shell materials.
According to the prior art, since the continuous fiber reinforcement effect is remarkable, the use of the continuous fiber reinforced thermoplastic composite material is rapidly increasing in recent years, and the related art is continuously developed. However, unlike short glass fibers dispersed directly in ABS in a screw extruder, continuous fibers have many limitations for reinforcing ABS.
On the one hand, the continuous fibers are mainly in the form of glass fiber cloth, which makes the bonding of the polymer to the glass fiber cloth difficult, and requires a sufficient pre-impregnation of the glass fiber cloth. For example, the Chinese patent publication No. CN106084606B discloses a continuous fiber reinforced thermoplastic composite material and a preparation method thereof. According to the technical scheme, the thermoplastic resin composition is obtained by selecting a proper modifier, a methacrylic acid monomer, an initiator and other components and compounding in a reasonable ratio. The resin composition is coated on continuous fibers for presoaking at normal temperature, and then the continuous fiber reinforced thermoplastic composite material is prepared according to the set lamination process flow.
In practical applications, continuous fibers are used to reinforce panels, primarily by laying up a continuous fiber lay-up. For example, the Chinese patent publication No. CN 1136966583A discloses a continuous fiber reinforced MC nylon plate, which is prepared by adopting a bottom film, a top film, a continuous fiber layer arranged between the bottom film and the top film, and MC nylon impregnated and heated and cured on the continuous fiber layer.
However, for the processing of helmets, molding is conventionally performed by injection molding or die pressing, and it is obvious that it is difficult for continuous fibers to satisfy the processing conditions of injection molding. In compression molding, continuous fiber plates need to be molded, so that the process is limited to large stamping depth and large processing stretch during helmet molding processing, and internal continuous fibers are easy to break.
Disclosure of Invention
The technical object of the present invention was to develop a continuous fiber reinforced thermoplastic helmet shell material suitable for use in helmet shell processing. The technical scheme of the problem is that when continuous fiber glass fiber cloth is used for ABS, lay two-layer glass fiber cloth, set up the high mobility composite bed between two-layer glass fiber cloth, the continuous fiber reinforcing thermoplasticity helmet shell material that this technique was handled and is obtained, make ABS soften through preheating during the mould pressing, do benefit to stamping forming, through laying the high mobility complex body between two-layer glass fiber cloth, make two-layer glass fiber cloth slide each other, avoid the too high glass fiber who causes of punching press degree of depth to be broken by the tension.
In order to achieve the technical purpose, the invention provides a continuous fiber reinforced thermoplastic helmet shell material, which is characterized in that: the continuous fiber reinforced thermoplastic helmet shell material comprises two layers of ABS resin layers and a high-flow composite layer sandwiched between the ABS resin layers;
a glass fiber cloth layer is laid between the ABS resin layer and the high-flow composite layer;
the high-flow composite layer is composed of glass microspheres, silicone powder and thermoplastic elastomer.
Preferably, the glass fiber cloth layer is pre-impregnated by resin and is 300-350g/m 2 The glass fiber cloth of (1).
Preferably, the mass ratio of the glass microspheres to the silicone powder to the thermoplastic elastomer is 10-15:0.5-1:80-85.
Further preferably, the glass microspheres are glass microspheres with the particle size of 50-100 μm;
further preferably, the thermoplastic elastomer is ethylene-octene copolymer (POE).
The high-flow composite layer is obtained by processing the thermoplastic elastomer through the glass microspheres and the silicone powder, so that the high-flow composite layer has good elasticity and good fluidity, and the high-flow composite layer between the two layers of glass fiber cloth flows when the helmet is prepared by high-depth die stamping to promote the two layers of glass fiber cloth to slide mutually, so that the situation that the glass fiber is broken due to overhigh stamping depth is avoided, and the preparation of the helmet is met.
Further, the invention provides a preparation method of the continuous fiber reinforced thermoplastic helmet shell material, which is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) Melting and extruding ABS into sheets in a first twin-screw extruder, laying glass fiber cloth while the ABS is hot, and rolling and compounding to obtain an A layer;
(2) Melting and extruding ABS into sheets in a second double-screw extruder, laying glass fiber cloth while the ABS is hot, and rolling and compounding to obtain a layer B;
(3) Melting and extruding the mixture of the glass microspheres, the silicone powder and the thermoplastic elastomer in a third double-screw extruder, and rolling and sheeting to obtain a layer C;
(4) And respectively attaching one side of the layer A of glass fiber cloth and one side of the layer B of glass fiber cloth to the layer C, so that the layer C is sandwiched in the middle, and performing hot-pressing compounding by a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
Preferably, the thickness of the layer A in the step (1) is 2-3mm; the thickness of the layer B in the step (2) is 2-3mm; and (4) the thickness of the C layer in the step (3) is 1-2mm.
Preferably, the hot-roll hot-pressing of step (4) is carried out at a temperature of 165-170 ℃.
The continuous fiber reinforced material with glass fiber cloth as skeleton is produced into sheet semi-finished product. The semi-finished product of the continuous fiber reinforced sheet material is easy to cause fiber breakage when manufacturing a product with large mould pressing impact depth, thereby influencing the reinforcing effect. The invention provides a continuous fiber reinforced thermoplastic helmet shell material and a preparation method thereof in order to meet the requirements of deep drawing and die pressing of a helmet. The technology solves the problem of fiber separation of the helmet material prepared by the continuous glass fiber reinforced material in the deep mold filling process, and lays a technical foundation for using the continuous fiber in the helmet material.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention adopts simple technical means to lead the helmet to use the continuous glass fiber reinforced material, thereby avoiding the defect that the deep drawing die forming of the continuous fiber reinforced material is easy to cause fiber fracture.
(2) The preparation method is simple in preparation process, does not need special equipment, and is suitable for industrial large-scale production.
In conclusion, the technical scheme of the invention has outstanding characteristics and obvious practical value, and no related publicly published technology exists in the products in the prior art, thereby having obvious progress compared with the prior art and wide large-scale popularization and production values.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the following schematic diagram shows the structural composition of the continuous fiber reinforced thermoplastic helmet shell material of the present invention.
FIG. 1: a schematic structural representation of a continuous fiber reinforced thermoplastic helmet shell material, wherein:
1-an ABS resin layer; 2-a glass fiber cloth layer; 3-high flow composite layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
(1) In a first co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m of an epoxy resin-prepreg was laid in the hot state 2 Rolling and compounding the glass fiber cloth to obtain a layer A with the thickness of 2.5 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m of an epoxy resin-prepreg was laid in the hot state 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 2.5 mm;
(3) Glass microspheres with the particle size of 50-100 microns, silicone powder and thermoplastic elastomer POE (POE 8450 Dow chemical) are mixed according to the mass ratio of 10:1:85, mixing uniformly; performing melt extrusion at 120 ℃ in a third co-rotating double-screw extruder, and rolling into sheets to obtain a layer C with the thickness of 1 mm;
(4) And respectively attaching one side of the glass fiber cloth layer A and one side of the glass fiber cloth layer B to the layer C to sandwich the layer C, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
Comparative example 1
(1) In a first co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m of an epoxy resin-prepreg was laid in the hot state 2 Rolling and compounding the glass fiber cloth to obtain a layer A with the thickness of 3.0 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m pre-impregnated with epoxy resin was laid down while hot 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 3.0 mm;
(3) And (3) attaching one side of the layer A of glass fiber cloth to one side of the layer B of glass fiber cloth, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
The scheme does not arrange a flowing layer between the glass fiber cloth, when the glass fiber cloth is used for deep drawing die pressing, the glass fiber cloth is stretched along with the die pressing, and continuous fibers are easily broken, so that the reinforcing effect of the continuous fibers is reduced.
Example 2
(1) ABS (ABS 3453 Dow chemical) is melt-extruded into sheets at 220 ℃ in a first co-rotating twin-screw extruder, and 350g/m of an epoxy resin prepreg is laid on the sheets while the sheets are still hot 2 Glass fiber ofRolling and compounding the vinylon to obtain a layer A with the thickness of 2.5 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m pre-impregnated with epoxy resin was laid down while hot 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 2.5 mm;
(3) Glass microspheres with the particle size of 50-100 microns, silicone powder and a thermoplastic elastomer POE (POE 8450 Dow chemical) are mixed according to a mass ratio of 12:1:85, mixing uniformly; performing melt extrusion at 120 ℃ in a third co-rotating double-screw extruder, and rolling into sheets to obtain a layer C with the thickness of 1 mm;
(4) And respectively attaching one side of the glass fiber cloth layer A and one side of the glass fiber cloth layer B to the layer C to sandwich the layer C, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
Comparative example 2
(1) ABS (ABS 3453 Dow chemical) is melt-extruded into sheets at 220 ℃ in a first co-rotating twin-screw extruder, and 350g/m of an epoxy resin prepreg is laid on the sheets while the sheets are still hot 2 Rolling and compounding the glass fiber cloth to obtain a layer A with the thickness of 2.5 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m pre-impregnated with epoxy resin was laid down while hot 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 2.5 mm;
(3) Silicon powder and a thermoplastic elastomer POE (POE 8450 Dow chemical) are mixed according to the mass ratio of 1:85, mixing uniformly; performing melt extrusion at 120 ℃ in a third co-rotating double-screw extruder, and rolling into sheets to obtain a C layer with the thickness of 1 mm;
(4) And respectively attaching one side of the layer A of glass fiber cloth and one side of the layer B of glass fiber cloth to the layer C to sandwich the layer C, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
According to the scheme, glass microspheres are not used in the preparation of the layer C, so that the flowability of the flowing layer is reduced, and when the glass fiber cloth is used for deep drawing die pressing, the sliding of the two layers of glass fiber cloth is weakened, the continuous fibers are broken, and the reinforcing effect of the continuous fibers is reduced.
Example 3
(1) ABS (ABS 3453 Dow chemical) is melt-extruded into sheets at 220 ℃ in a first co-rotating twin-screw extruder, and 350g/m of an epoxy resin prepreg is laid on the sheets while the sheets are still hot 2 Rolling and compounding the glass fiber cloth to obtain a layer A with the thickness of 2.5 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m pre-impregnated with epoxy resin was laid down while hot 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 2.5 mm;
(3) Glass microspheres with the particle size of 50-100 microns, silicone powder and thermoplastic elastomer POE (POE 8450 Dow chemical) are mixed according to the mass ratio of 15:1:85, mixing uniformly; performing melt extrusion at 120 ℃ in a third co-rotating double-screw extruder, and rolling into sheets to obtain a C layer with the thickness of 1 mm;
(4) And respectively attaching one side of the glass fiber cloth layer A and one side of the glass fiber cloth layer B to the layer C to sandwich the layer C, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
Comparative example 3
(1) In a first co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m of an epoxy resin-prepreg was laid in the hot state 2 Rolling and compounding the glass fiber cloth to obtain a layer A with the thickness of 2.5 mm;
(2) In a second co-rotating twin-screw extruder, ABS (ABS 3453 Dow chemical) was melt-extruded at 220 ℃ into sheets, and 350g/m pre-impregnated with epoxy resin was laid down while hot 2 Rolling and compounding the glass fiber cloth to obtain a layer B with the thickness of 2.5 mm;
(3) Glass microspheres with the particle size of 50-100 mu m, silicone powder and ABS (ABS 3453 Dow chemical) are mixed according to the mass ratio of 15:1:85, mixing uniformly; performing melt extrusion at 220 ℃ in a third co-rotating double-screw extruder, and rolling into sheets to obtain a C layer with the thickness of 1 mm;
(4) And respectively attaching one side of the glass fiber cloth layer A and one side of the glass fiber cloth layer B to the layer C to sandwich the layer C, and performing hot-pressing compounding at 165 ℃ by using a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
This scheme uses ABS to replace POE when C layer preparation, when being used for deep-drawing mould pressing, because the base-material on A, B, C layer is the same, and the softening point is similar for the C layer mobility of deep-drawing mould pressing weakens under the same temperature, and glass fiber cloth slides and weakens, and continuous fibers has the snap phenomenon, causes continuous fibers reinforcing effect to reduce.
The helmet shell materials obtained in examples 1 to 3 and comparative examples 1 to 3 were subjected to a performance test using the following qualitative analysis:
cutting the sheets of the continuous fiber reinforced thermoplastic helmet material obtained in examples 1 to 3 and comparative examples 1 to 3; and (3) keeping the temperature of the heating box to 100 ℃, then sending the sheet into a mould pressing die for mould pressing, keeping the pressure of the sheet through a moving die and a fixed die at the mould pressing depth of 14cm, and opening the mould to obtain the helmet shell. Cutting a sample with the width of 10mm at the topmost part of the helmet shell, flattening the sample at 100 ℃ to serve as a test sample, wherein the topmost part belongs to the position with the maximum deep drawing die pressing and stretching, and the topmost part can reflect whether continuous glass fiber is broken or not. The impact strength was tested in reference to GB/T1843, as shown in Table 1.
Table 1:
through the qualitative test and the comparative analysis, the scheme of the embodiment 1-3 has better fluidity along with the increase of the amount of the glass microspheres used in the middle C layer, and in addition, ABS is softened after the ABS is heated at 100 ℃, the middle part is melted, and when the composite C layer is subjected to deep drawing and die pressing, the high-fluidity composite C layer between the two layers of glass fiber cloth flows to promote the two layers of glass fiber cloth to slide mutually, so that the situation that the glass fiber is pulled off due to overhigh drawing depth is avoided, therefore, the better the flow of the C layer is, the better the integrity of the glass fiber cloth is, and the impact resistance of the obtained helmet shell is.
Comparative example 1 since no flow layer was provided between the glass fiber cloths, when used for the deep drawing die pressing, the glass fiber cloths were stretched with the die pressing, and the continuous fibers were easily broken, resulting in a decrease in the reinforcing effect of the continuous fibers and a decrease in the impact resistance.
In comparative example 2, glass microspheres are not used in the preparation of the layer C, so that the fluidity of the flowing layer is reduced, and when the glass fiber cloth is used for deep drawing die pressing, the sliding of the two layers of glass fiber cloth is weakened, the continuous fiber has a snapping phenomenon, the reinforcing effect of the continuous fiber is reduced, and the impact resistance is reduced.
Comparative example 3 when the layer C is prepared, ABS is used for replacing POE, and when the layer C is used for deep drawing die pressing, the base materials of the layer A, the layer B and the layer C are the same, and the softening points are similar, so that the fluidity of the layer C of the deep drawing die pressing at the same temperature is weakened, the sliding of the glass fiber cloth is weakened, the continuous fibers are broken, and the reinforcing effect of the continuous fibers is reduced.
Claims (5)
1. A continuous fiber reinforced thermoplastic helmet shell material characterized by: the continuous fiber reinforced thermoplastic helmet shell material comprises two ABS resin layers and a high-flow composite layer sandwiched between the ABS resin layers;
a glass fiber cloth layer is laid between the ABS resin layer and the high-flow composite layer;
the high-flow composite layer consists of glass microspheres, silicone powder and a thermoplastic elastomer;
the mass ratio of the glass microspheres to the silicone powder to the thermoplastic elastomer is 10-15:0.5-1:80-85;
the glass microspheres are glass microspheres with the particle size of 50-100 mu m;
the thermoplastic elastomer is ethylene-octene copolymer.
2. The continuous fiber reinforced thermoplastic helmet shell material of claim 1 wherein: the glass fiber cloth layer is pre-impregnated by resin and is 300-350g/m 2 The glass fiber cloth of (1).
3. A process for the preparation of a continuous fiber reinforced thermoplastic helmet shell material according to any of claims 1 to 2, wherein: the preparation method comprises the following steps:
(1) Melting and extruding ABS into sheets in a first twin-screw extruder, paving glass fiber cloth while the sheets are hot, and rolling and compounding to obtain a layer A;
(2) Melting and extruding ABS into sheets in a second double-screw extruder, laying glass fiber cloth while the ABS is hot, and rolling and compounding to obtain a layer B;
(3) Melting and extruding the mixture of the glass microspheres, the silicone powder and the thermoplastic elastomer in a third double-screw extruder, and rolling and sheeting to obtain a layer C;
(4) And respectively attaching one side of the layer A of glass fiber cloth and one side of the layer B of glass fiber cloth to the layer C, so that the layer C is sandwiched in the middle, and performing hot-pressing compounding by a hot roller to obtain the continuous fiber reinforced thermoplastic helmet shell material.
4. A method of preparing a continuous fiber reinforced thermoplastic helmet shell material according to claim 3, wherein: the thickness of the layer A in the step (1) is 2-3mm; the thickness of the layer B in the step (2) is 2-3mm; and (4) the thickness of the layer C in the step (3) is 1-2mm.
5. A method of preparing a continuous fiber reinforced thermoplastic helmet shell material according to claim 3, wherein: the temperature adopted by hot roller hot pressing in the step (4) is 165-170 ℃.
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| CN202111590331.1A CN114103340B (en) | 2021-12-23 | 2021-12-23 | Continuous fiber reinforced thermoplastic helmet shell material and preparation method thereof |
| PCT/CN2022/088171 WO2023115768A1 (en) | 2021-12-23 | 2022-04-21 | Continuous fiber-reinforced thermoplastic helmet shell material and preparation method therefor |
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| CN114103340B (en) * | 2021-12-23 | 2022-11-04 | 浙江远景体育用品股份有限公司 | Continuous fiber reinforced thermoplastic helmet shell material and preparation method thereof |
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| WO2008013094A1 (en) * | 2006-07-28 | 2008-01-31 | Toray Industries, Inc. | Molded article and method for producing the same |
| CN109553948A (en) * | 2018-11-16 | 2019-04-02 | 广东格瑞新材料股份有限公司 | A kind of high tenacity high rigidity composite material and preparation method |
| CN110001090A (en) * | 2019-04-04 | 2019-07-12 | 东南大学 | A kind of preparation method of continuous fiber reinforced thermoplastic composite material |
| CN112874079A (en) * | 2019-11-29 | 2021-06-01 | 广州金发碳纤维新材料发展有限公司 | Multi-scale fiber reinforced thermoplastic composite plate and manufacturing method thereof |
| CN110879018A (en) * | 2019-12-03 | 2020-03-13 | 浙江远景体育用品有限公司 | Fiber-reinforced composite plastic for motorcycle helmet and preparation method thereof |
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| WO2023115768A1 (en) | 2023-06-29 |
| CN114103340A (en) | 2022-03-01 |
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