CN114957952A - SMC-A sheet material formula and technology applied to new energy electric vehicle - Google Patents
SMC-A sheet material formula and technology applied to new energy electric vehicle Download PDFInfo
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- CN114957952A CN114957952A CN202210621713.4A CN202210621713A CN114957952A CN 114957952 A CN114957952 A CN 114957952A CN 202210621713 A CN202210621713 A CN 202210621713A CN 114957952 A CN114957952 A CN 114957952A
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- 239000000463 material Substances 0.000 title abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000003365 glass fiber Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 230000008719 thickening Effects 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 229920006337 unsaturated polyester resin Polymers 0.000 claims abstract description 8
- CWPKTBMRVATCBL-UHFFFAOYSA-N 3-[1-[1-[(2-methylphenyl)methyl]piperidin-4-yl]piperidin-4-yl]-1h-benzimidazol-2-one Chemical compound CC1=CC=CC=C1CN1CCC(N2CCC(CC2)N2C(NC3=CC=CC=C32)=O)CC1 CWPKTBMRVATCBL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 3
- 238000005470 impregnation Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003677 Sheet moulding compound Substances 0.000 description 17
- 239000000945 filler Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 4
- 238000005411 Van der Waals force Methods 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 210000000329 smooth muscle myocyte Anatomy 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- 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
- C08J5/18—Manufacture of films or sheets
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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
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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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
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/06—Unsaturated polyesters
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a SMC-A sheet material formula applied to a new energy electric vehicle, which comprises the following SMC raw material formula in percentage: 20% of unsaturated polyester resin, 6% of PS low shrinkage agent, 4% of PLA low profile agent, 23% of aluminum hydroxide, 12% of calcium carbonate, 2% of PE micro powder, 26% of glass fiber, 2% of color paste, 1% of release agent, 0.3% of TBPB curing agent, 2% of carbon fiber, 0.01% of thickening agent and 1.69% of other auxiliary agents; the curing time is greatly shortened, and the using amount is less; the speed of the thickening stage is fast enough to enter the mould pressing operation as soon as possible; magnesium oxide is selected for thickening, the thickening speed is high in the early stage, and the viscosity tends to be stable easily due to complete reaction in the later stage; the curing time is greatly shortened, and the using amount is less; in the initial impregnation stage, the resin is thickened slowly enough to ensure good impregnation of the glass fibers; the SMC sheet has no stickiness on the surface and is easy to operate; when SMC is formed, the glass fiber and the carbon fiber can flow to all parts of a formed product, so that the stability of the physical and chemical properties of each part of the formed product is ensured; the molded product has good appearance.
Description
Technical Field
The invention relates to the technical field of SMC materials, in particular to a formula and a process of an SMC-A sheet material applied to a new energy electric vehicle.
Background
SMC (sheet Molding compound) is a novel thermosetting glass fiber reinforced plastic Molding material, is a dry sheet-shaped prepreg consisting of unsaturated polyester resin, low-shrinkage additive, filler, curing agent, thickening agent, release agent, glass fiber and the like, has the characteristics of low shrinkage, high strength, convenient Molding and the like, and is particularly suitable for industrial large-scale production.
With the increasingly higher requirements of modern manufacturing industry on the performance of materials, the performance of the SMC sheet needs to be further improved, and better effects of temperature resistance, cold resistance, corrosion resistance, aging resistance, long service life and the like are needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a formula and a process of an SMC-A sheet applied to a new energy electric vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
the formula of the SMC-A sheet applied to the new energy electric vehicle comprises the following raw materials in percentage: 20% of unsaturated polyester resin, 6% of PS low shrinkage agent, 4% of PLA low profile agent, 23% of aluminum hydroxide, 12% of calcium carbonate, 2% of PE micro powder, 26% of glass fiber, 2% of color paste, 1% of release agent, 0.3% of TBPB curing agent, 2% of carbon fiber, 0.01% of thickening agent and 1.69% of other auxiliary agents.
Preferably, the thickener may be magnesium oxide.
Preferably, zinc stearate is used as the release agent.
Preferably, the other aids include an anti-UV aid, a stabilizing aid and a coupling aid.
Preferably, the SMC-A sheet process applied to the new energy electric vehicle comprises the following steps:
step S1, preparing resin paste;
step S2, compounding SMC;
step S3, thickening SMC;
step S4, finished sheet.
Preferably, step S1 includes:
step S11, pouring unsaturated polyester resin, low shrinkage agent, low profile agent, PE powder, zinc stearate, TBPB curing agent and other auxiliary agents into a high-speed dispersion machine, and mixing and stirring uniformly under low shearing force;
step S12, pouring aluminum hydroxide and calcium carbonate after stirring evenly;
step S13, continuously stirring uniformly;
and step S14, after stirring uniformly, preparing the resin paste and putting the resin paste into an online mixer.
Preferably, step S2 includes:
step S21, pouring the color paste and the magnesium oxide into an online mixer to be uniformly stirred with the resin paste;
step S22, starting a compound machine, unwinding the PP film, and uniformly coating the PP film with resin paste with a certain thickness after a resin scraper is removed;
step S23, when the glass fiber and the carbon fiber pass through the fiber settling zone, the glass fiber and the carbon fiber are cut and uniformly settled on the fiber settling zone;
step S24, compounding the PP film bearing the glass fiber and the carbon fiber with the upper PP film coated with the resin paste in the same way at a compounding roller, and clamping the glass fiber in the middle to form a sandwich structure; soaking and mixing;
and step S25, packing the product.
Preferably, in step S3, the SMC thickening is accelerated to thicken in a maturation chamber with a blower.
Preferably, the accelerated thickening temperature is 45 ℃ for about 24 hours.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs a formula and a process of an SMC-A sheet material applied to a new energy electric vehicle, wherein a thickening agent can adopt magnesium oxide, a release agent can adopt zinc stearate, and the release agent can adopt zinc stearate; the reinforcing material can adopt glass fiber and carbon fiber, aluminum hydroxide powder is used as flame-retardant filler, and the filler is close to flocculate because of van der Waals force of mutually attracted filler molecules. If a dispersant molecule with the same charge and side long chain is adsorbed and wrapped on the surface of the filler molecule, electrostatic repulsion and steric hindrance can be generated between the filler molecules, the distance between the molecules is enlarged by offsetting Van der Waals force, and the de-agglomeration effect is effectively realized; when the aluminum hydroxide powder with flame retardant effect is selected, the aluminum hydroxide powder absorbs heat under flame and releases bound water to generate self-extinguishing effect, and can improve the water resistance and electrical insulation of the product and prevent the cracking of the polymer; magnesium oxide is selected for thickening, the thickening speed is high in the early stage, and the viscosity tends to be stable easily due to complete reaction in the later stage; the curing time is greatly shortened, and the using amount is less; in the initial impregnation stage, the resin is thickened slowly enough to ensure the good impregnation of the glass fibers; the SMC sheet has no stickiness on the surface and is easy to operate; when SMC is formed, the glass fiber and the carbon fiber can flow to all parts of a formed product, so that the stability of the physical and chemical properties of each part of the formed product is ensured; the molded product has good appearance.
Drawings
FIG. 1 is a table of SMC raw materials according to the present invention;
FIG. 2 is a schematic view of a SMC manufacturing process according to the present invention;
FIG. 3 is a schematic view of a process for preparing a resin paste according to the present invention;
fig. 4 is a schematic diagram of a SMC compounding process according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, a SMC-a sheet material formula applied to a new energy electric vehicle comprises the following raw material SMCs in percentage: 20% of unsaturated polyester resin, 6% of PS low shrinkage agent, 4% of PLA low profile agent, 23% of aluminum hydroxide, 12% of calcium carbonate, 2% of PE micro powder, 26% of glass fiber, 2% of color paste, 1% of release agent, 0.3% of TBPB curing agent, 2% of carbon fiber, 0.01% of thickening agent and 1.69% of other auxiliary agents.
Wherein, the thickening agent can adopt magnesium oxide, the release agent can adopt zinc stearate, and the release agent can adopt zinc stearate; the reinforcing material can adopt glass fiber and carbon fiber, aluminum hydroxide powder is used as flame-retardant filler, and the filler is close to flocculate because of van der Waals force of mutually attracted filler molecules. If a dispersant molecule with the same charge and side long chain is adsorbed and wrapped on the surface of the filler molecule, electrostatic repulsion and steric hindrance can be generated between the filler molecules, the distance between the molecules is enlarged by offsetting Van der Waals force, and the de-agglomeration effect is effectively realized; when the aluminium hydroxide powder with flame-retardant effect is selected, it can absorb heat under the flame and release combined water to produce self-extinguishing action, and can improve water-proofing property and electric insulating property of product and can prevent polymer from cracking.
An SMC-A sheet process applied to a new energy electric vehicle comprises the following steps: step S1, preparing resin paste; step S2, compounding SMC; step S3, thickening SMC; and step S4, finishing the sheet.
Step S1 includes: step S11, pouring unsaturated polyester resin, low shrinkage agent, low profile agent, PE powder, zinc stearate, TBPB curing agent and other auxiliary agents into a high-speed dispersion machine, and mixing and stirring uniformly under low shearing force; step S12, pouring aluminum hydroxide and calcium carbonate after stirring evenly; step S13, continuously stirring uniformly;
and step S14, after stirring uniformly, preparing the resin paste and putting the resin paste into an online mixer.
Step S2 includes: step S21, pouring the color paste and the magnesium oxide into an online mixer to be uniformly stirred with the resin paste; step S22, starting a compound machine, unwinding the PP film, and uniformly coating the PP film with resin paste with a certain thickness after a resin scraper is removed; step S23, when the glass fiber and the carbon fiber pass through the fiber settling zone, the glass fiber and the carbon fiber are cut and uniformly settled on the fiber settling zone; step S24, compounding the PP film bearing the glass fibers and the carbon fibers with the upper PP film coated with the resin paste in the same way at a compound roller, and sandwiching the glass fibers to form a sandwich structure; soaking and mixing; and step S25, packing the product.
In step S3, SMC thickening is carried out accelerated thickening in a curing chamber with a blower, the accelerated thickening temperature is 45 ℃, and the time is about 24 hours; the curing time is greatly shortened, and the using amount is less; magnesium oxide is selected for thickening, the thickening speed is high in the early stage, and the viscosity tends to be stable easily due to complete reaction in the later stage; the curing time is greatly shortened, and the using amount is less; in the initial impregnation stage, the resin is thickened slowly enough to ensure the good impregnation of the glass fibers; the SMC sheet has no stickiness on the surface and is easy to operate; when SMC is formed, the glass fiber and the carbon fiber can flow to all parts of a formed product, so that the stability of the physical and chemical properties of each part of the formed product is ensured; the molded product has good appearance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (9)
1. The formula of the SMC-A sheet applied to the new energy electric vehicle is characterized in that the SMC sheet comprises the following raw materials in percentage: 20% of unsaturated polyester resin, 6% of PS low shrinkage agent, 4% of PLA low profile agent, 23% of aluminum hydroxide, 12% of calcium carbonate, 2% of PE micro powder, 26% of glass fiber, 2% of color paste, 1% of release agent, 0.3% of TBPB curing agent, 2% of carbon fiber, 0.01% of thickening agent and 1.69% of other auxiliary agents.
2. The SMC-A sheet formulation applied to a new energy electric vehicle according to claim 1, wherein the thickening agent is magnesium oxide.
3. An SMC-A sheet formulation applied to a new energy electric vehicle according to claim 1, wherein the release agent can adopt zinc stearate.
4. An SMC-A sheet formulation applied to a new energy electric vehicle according to claim 1, wherein the other additives comprise an anti-UV additive, a stabilizing additive and a coupling additive.
5. The SMC-A sheet process applied to the new energy electric vehicle is characterized by comprising the following steps of:
step S1, preparing resin paste;
step S2, compounding SMC;
step S3, thickening SMC;
and step S4, finishing the sheet.
6. An SMC-A sheet process applied to a new-energy electric vehicle according to claim 5, wherein the step S1 comprises:
step S11, pouring unsaturated polyester resin, low shrinkage agent, low profile agent, PE powder, zinc stearate, TBPB curing agent and other auxiliary agents into a high-speed dispersion machine, and mixing and stirring uniformly under low shearing force;
step S12, pouring aluminum hydroxide and calcium carbonate after stirring evenly;
step S13, continuously stirring uniformly;
and step S14, after stirring uniformly, preparing the resin paste and putting the resin paste into an online mixer.
7. An SMC-A sheet process applied to a new energy electric vehicle according to claim 5, wherein the step S2 comprises:
step S21, pouring the color paste and the magnesium oxide into an online mixer to be uniformly stirred with the resin paste;
step S22, starting a compound machine, unreeling the lower film, and uniformly coating the PP film with resin paste with a certain thickness after passing through a lower resin scraper;
step S23, when the glass fiber and the carbon fiber pass through the fiber settling zone, the glass fiber and the carbon fiber are cut and uniformly settled on the fiber settling zone;
step S24, compounding the PP film bearing the glass fibers and the carbon fibers with the upper PP film coated with the resin paste in the same way at a compound roller, and sandwiching the glass fibers to form a sandwich structure; soaking and mixing;
and step S25, packing the product.
8. An SMC-A sheet process applied to a new energy electric vehicle according to claim 5, wherein in step S3, SMC thickening is accelerated to thicken in a curing chamber with a blower.
9. An SMC-A sheet process applied to a new energy electric vehicle according to claim 8, wherein the accelerated thickening temperature is 45 ℃ and the time is about 24 hours.
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Application publication date: 20220830 |