CN108003530B - Non-rebound 3D forming composite material and preparation method thereof - Google Patents
Non-rebound 3D forming composite material and preparation method thereof Download PDFInfo
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- CN108003530B CN108003530B CN201711362325.4A CN201711362325A CN108003530B CN 108003530 B CN108003530 B CN 108003530B CN 201711362325 A CN201711362325 A CN 201711362325A CN 108003530 B CN108003530 B CN 108003530B
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- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 25
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 25
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 24
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 24
- 239000011259 mixed solution Substances 0.000 claims abstract description 17
- 239000012779 reinforcing material Substances 0.000 claims abstract description 10
- 238000007731 hot pressing Methods 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 55
- 239000010935 stainless steel Substances 0.000 claims description 55
- 239000007788 liquid Substances 0.000 claims description 47
- 238000003825 pressing Methods 0.000 claims description 45
- 239000003292 glue Substances 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 19
- 238000002791 soaking Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 28
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000012958 reprocessing Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 12
- 238000007598 dipping method Methods 0.000 description 10
- 238000005086 pumping Methods 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229920001187 thermosetting polymer Polymers 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000000016 photochemical curing Methods 0.000 description 5
- 239000012815 thermoplastic material Substances 0.000 description 5
- 239000012949 free radical photoinitiator Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000010146 3D printing Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000008365 aromatic ketones Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- 239000013034 phenoxy resin Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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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
- C08J2333/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2363/10—Epoxy resins modified by unsaturated compounds
-
- 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
- C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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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
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/10—Epoxy resins modified by unsaturated compounds
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a non-rebounding 3D forming composite material and a preparation method thereof. The composite material is prepared by hot-pressing at least one layer of prepreg, wherein the prepreg is prepared by impregnating a mixed solution with a reinforcing material and baking the impregnated mixed solution, and the mixed solution is prepared by uniformly mixing the following materials in parts by weight: 40-60 parts of light-cured resin, 2.8-4.2 parts of photoinitiator, 80-120 parts of thermoplastic acrylic resin and 0-30 parts of solvent. The preparation method of the non-rebound 3D molding composite material has the advantages of simple formula, low cost, no sticking of prepreg, softening by heating for reprocessing, simple and convenient processing and molding, high molding efficiency, no rebound in molded part environment test and the like.
Description
Technical Field
The invention belongs to the technical field of manufacturing of reinforced materials, and particularly relates to a 3D (three-dimensional) molding composite material which does not rebound after environmental test and a preparation method thereof.
Background
One of the rapid prototyping technologies is a 3D printing technology, which is a technology for constructing an object by printing layer by layer using an adhesive material based on a digital model file. The following three types of materials are available in the market for 3D molding:
1) thermoplastic material: the thermoplastic material can be divided into a pure plastic material and a fiber reinforced thermoplastic material such as glass fiber, carbon fiber and the like, the two thermoplastic materials can be softened and processed for many times, wherein the pure plastic material has poor mechanical property, so that the requirement of lightness and thinness cannot be met if the thickness is increased to reach a certain mechanical property; the internal stress of the fiber reinforced thermoplastic material after 3D forming is large, and due to the plastic performance, the stress is released during the environmental test, so that the formed part has a rebound phenomenon.
2) Light-curing material: compared with the common curing material, the photocuring material has the advantages of fast curing, no need of heating, energy saving and the like, but the single photocuring material basically has the problem of sticking hands before curing, and is inconvenient for subsequent 3D forming. The applicant adopts a pure light curing material to carry out experiments, and the method comprises the following specific steps: firstly, preparing a photocuring glue solution; secondly, soaking the prepared photocuring glue solution in glass fiber cloth; thirdly, putting the impregnated material into an oven for drying, and fourthly, putting 1 or more layers of dried materials into a press for pressing into an integral plate; fifthly, performing 3D forming on the pressed plate; and sixthly, carrying out photocuring while carrying out 3D forming. The applicant finds that the method has the problems that the prepreg is sticky to hands, and the material dried in the third step is still very sticky to hands, so that the method is not convenient for subsequent operation at all and has no production feasibility.
3) Thermosetting material: the thermosetting material needs to be directly subjected to 3D forming by using the prepreg during 3D forming, and is heated and cured during forming, namely the thermosetting material is completely cured after forming, so that the problem of rebound during environmental test after 3D forming of the thermosetting material is solved, but the thermosetting material forming plate cannot be subjected to heat softening and processing forming again, and the forming efficiency is low. Patent application "201510753618X heat-reformable thermosetting resin system composite material and process for its preparation", discloses a pressing sequence: firstly, curing the thermosetting resin in the formula; and in the second step, 3D forming is carried out, the technical effect that the product can be formed again by heating is realized by adding phenoxy resin, but the method has the problem that a large amount of internal stress is generated during 3D forming, so that the rebound problem can occur during environmental test.
In conclusion, the invention develops a non-rebound 3D forming composite material aiming at the defects and market demands of the existing 3D forming material, the formed part prepared by the composite material does not rebound when subjected to environmental test, and in addition, the problem of sticking hands before the light curing material is cured is solved, and the composite material has the advantages of low cost, simplicity and convenience in processing and forming, high forming efficiency and the like.
Disclosure of Invention
The invention aims to provide a non-rebounding 3D forming composite material and a preparation method thereof. The invention has the advantages of simple formula, low cost, no sticking of prepreg, capability of being heated for softening and reprocessing, simple and convenient processing and forming, high forming efficiency, no rebound of formed part environment test and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the non-rebound 3D forming composite material is formed by hot pressing at least one layer of prepreg through a hot press, wherein the prepreg is prepared by soaking a mixed solution with a reinforcing material and baking the impregnated mixed solution through an oven, and the mixed solution is prepared by uniformly mixing the following materials in parts by weight: 40-60 parts of light-cured resin, 2.8-4.2 parts of photoinitiator, 80-120 parts of thermoplastic acrylic resin and 0-30 parts of solvent.
The light-cured resin and the photoinitiator are added, so that light curing can be carried out simultaneously during 3D forming, and the formed part is prevented from rebounding during environmental test. The light-cured resin and the photoinitiator can be selected according to the wavelength of the light source of the customer light-cured equipment, and preferably, in order to match the equipment of the light source of 395nm of the customer, the light-cured resin and the photoinitiator are selected to be materials with absorption wavelength of about 395 nm. Specifically, the photocurable resin is selected from one or more of bisphenol a type epoxy acrylate, phenolic type epoxy acrylate, modified epoxy acrylate, epoxidized oil acrylate and other resins, and the photoinitiator is selected from one of acetophenone type free radical photoinitiators, acylphosphine oxide type free radical photoinitiators, aromatic ketone type free radical photoinitiators and other free radical photoinitiators.
According to the invention, 80-120 parts of thermoplastic acrylic resin is added, so that the prepared prepreg is ensured to be dry on the surface and not sticky, and meanwhile, due to the plasticity of the thermoplastic acrylic resin, the hot-pressed plate can be softened, processed and molded again after being heated. Specifically, the thermoplastic acrylic resin is a self-drying thermoplastic acrylic resin, and is a self-drying thermoplastic acrylic resin having a glass transition temperature of 100 ℃ or higher.
Preferably, the solvent is selected from one or more of low boiling point solvents such as acetone, butanone, ethyl acetate, toluene and the like;
preferably, the reinforcing material is selected from one or more of 7628 cloth, 1506 cloth, 2116 cloth, 1080 cloth and other common electronic grade fiberglass cloth.
(1) Preparing a mixed solution, wherein the mixed solution is prepared by uniformly mixing the following materials in parts by weight: firstly, uniformly mixing 40-60 parts of light-cured resin, 80-120 parts of thermoplastic acrylic resin and 0-30 parts of solvent, adding 2.8-4.2 parts of photoinitiator after completely and uniformly mixing, and uniformly mixing again to obtain a mixed solution.
(2) Placing the reinforcing material into the mixed solution obtained in the step (1) for full impregnation, then baking at the temperature of 120-135 ℃, and cooling to obtain the prepreg;
(3) superposing at least one prepreg in the step (2) to obtain a flat plate structure, covering a layer of release film on each of two surfaces of the flat plate to form a plate material, and then superposing stainless steel plates on the two surfaces of the plate material respectively;
(4) pressing the plate laminated with the stainless steel plate in the step (3), cooling to room temperature and taking out;
(5) and (3) detaching the pressed plate obtained in the step (4) from the stainless steel plate, tearing off the surface release film, and obtaining the plate with the surface release film torn off, namely the non-rebound 3D forming composite material.
Preferably, in the step (4), the pressing temperature is 120 to 135 ℃, and the pressing pressure is 5kgf/cm2～10kgf/cm2And preserving the heat for 2-5 minutes at 120-135 ℃ after pressing.
The invention has the following technical characteristics:
1) the composite material has the advantages of simple formula, simple manufacturing process and low cost.
2) The composite material of the invention is not solidified before 3D forming and the plasticity of the thermoplastic acrylic acid determines that the composite material can be subjected to 3D forming and is simple and convenient to process and form.
3) Compared with the traditional pure light curing material, the prepreg produced by adding the thermoplastic acrylic resin is not sticky under the action of the thermoplastic acrylic resin with proper amount, so that the feasibility of production is realized;
4) the invention adds the light-cured resin and the photoinitiator for light curing, has high curing efficiency, performs light curing reaction while 3D forming, can lock the internal stress generated during forming, and can realize the effect of no rebound during the environment test of the final 3D formed part.
Detailed Description
The following specific examples are further illustrative of the methods and techniques provided by the present invention and should not be construed as limiting the invention thereto.
Example 1: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 60kg of thermoplastic acrylic resin with the solid content of 50 percent, 70kg of light-cured resin with the solid content of 100 percent and 4.9kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 120 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 deg.C under a pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate, and tearing off the release film on the surface to obtain the non-rebounding 3D forming composite material.
Example 2: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 80kg of thermoplastic acrylic resin with 50 percent of solid content, 60kg of light-cured resin with 100 percent of solid content and 4.2kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 120 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the book with the stainless steel plates laminated on both sides into a vacuum hot press, and pressing at 120 deg.C under a pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 3: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 100kg of thermoplastic acrylic resin with 50 percent of solid content, 50kg of light-cured resin with 100 percent of solid content and 3.5kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 120 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 deg.C under a pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the 3D forming composite material without rebounding.
Example 4: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 120kg of thermoplastic acrylic resin with 50 percent of solid content, 40kg of light-cured resin with 100 percent of solid content and 2.8kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 120 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 deg.C under a pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 5: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 140kg of thermoplastic acrylic resin with 50 percent of solid content, 30kg of light-cured resin with 100 percent of solid content and 2.1kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 120 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 deg.C under a pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 6: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 60kg of thermoplastic acrylic resin with the solid content of 50 percent, 70kg of light-cured resin with the solid content of 100 percent and 4.9kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 135 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the book with the stainless steel plates laminated on both sides into a vacuum hot press, and pressing at 135 deg.C under a pressing pressure of 5kgf/cm2After pressing, the temperature is kept for 2 minutes at 135 ℃, and then the temperature is reduced to room temperature and the mixture is taken out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 7: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 80kg of thermoplastic acrylic resin with 50 percent of solid content, 60kg of light-cured resin with 100 percent of solid content and 4.2kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 135 ℃ for baking, cooling to obtain a prepreg, cutting the 2116 prepreg into a required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the book with the stainless steel plates laminated on both sides into a vacuum hot press, and pressing at 135 deg.C under a pressing pressure of 5kgf/cm2After pressing, the temperature is kept for 2 minutes at 135 ℃, and then the temperature is reduced to room temperature and the mixture is taken out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 8: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 100kg of thermoplastic acrylic resin with 50 percent of solid content, 50kg of light-cured resin with 100 percent of solid content and 3.5kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 135 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 135 deg.C under a pressing pressure of 5kgf/cm2After pressing, the temperature is kept for 2 minutes at 135 ℃, and then the temperature is reduced to room temperature and the mixture is taken out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 9: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 120kg of thermoplastic acrylic resin with 50 percent of solid content, 40kg of light-cured resin with 100 percent of solid content and 2.8kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 135 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 135 deg.C under a pressing pressure of 5kgf/cm2After pressing, the temperature is kept for 2 minutes at 135 ℃, and then the temperature is reduced to room temperature and the mixture is taken out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
Example 10: a preparation method of a non-rebounding 3D forming composite material comprises the following steps:
1. 140kg of thermoplastic acrylic resin with 50 percent of solid content, 30kg of light-cured resin with 100 percent of solid content and 2.1kg of photoinitiator are prepared into mixed liquid;
2. pumping the mixed liquid into a glue basin by using a circulating pump, dipping the 2116 cloth in the mixed liquid in the glue basin, putting the dipped mixed liquid into an oven with the temperature of 135 ℃ for baking, cooling to obtain a prepreg, cutting the prepreg into required size, and storing the prepreg in a dark place;
3. superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
4. feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 135 deg.C under a pressing pressure of 5kgf/cm2After pressing, the temperature is kept for 2 minutes at 135 ℃, and then the temperature is reduced to room temperature and the mixture is taken out;
5. disassembling the pressed plate from the stainless steel plate;
6. and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
The results of 3D molding tests performed on the non-resilient 3D molded composite materials prepared in examples 1 to 10 are shown in table 1.
TABLE 1 3D Molding test of non-rebounding 3D molded composites
Examples 1 and 6 show that the addition amount of the thermoplastic acrylic resin is small, so that the prepreg is sticky, the subsequent processing is unchanged, and the production feasibility is influenced;
examples 5 and 10 show that the addition of the light-curable resin is small, which causes the problems of internal stress generated by incomplete locking during 3D molding and rebound during environmental testing.
From examples 2 to 4 and 6 to 8, it can be seen that the material of the present invention can achieve the effect of 3D forming without rebound in environmental test.
According to the idea provided by the present invention, there are variations in the above embodiments and applications, and these variations should be regarded as the protection scope of the present invention.
Claims (3)
1. The non-rebound 3D forming composite material is characterized by being formed by hot-pressing at least one layer of prepreg, wherein the prepreg is prepared by soaking a reinforcing material in a mixed solution and then baking the reinforcing material, and the preparation method of the composite material comprises the following steps:
(1) preparing a mixed solution, namely preparing 80kg of thermoplastic acrylic resin with 50% of solid content, 60kg of light-cured resin with 100% of solid content and 4.2kg of photoinitiator into the mixed solution;
(2) the mixed liquid is pumped into a glue basin by a circulating pump, 2116 cloth is soaked in the mixed liquid in the glue basin, and then is put into an oven with the temperature of 120 ℃ for baking, and then is cooled to obtain the prepreg, and the prepreg is cut into the required size and stored in a dark place;
(3) superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich structure to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
(4) feeding the book with the stainless steel plates laminated on both sides into a vacuum hot press, and pressing at 120 ℃ under the pressing pressure of 10kgf/cm2Pressing, holding at 120 deg.C for 5 min, and heatingCooling to room temperature and taking out;
(5) disassembling the pressed plate from the stainless steel plate;
(6) and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
2. The non-rebound 3D forming composite material is characterized by being formed by hot-pressing at least one layer of prepreg, wherein the prepreg is prepared by soaking a reinforcing material in a mixed solution and then baking the reinforcing material, and the preparation method of the composite material comprises the following steps:
(1) 100kg of thermoplastic acrylic resin with 50% of solid content, 50kg of light-cured resin with 100% of solid content and 3.5kg of photoinitiator are prepared into mixed liquid;
(2) the mixed liquid is pumped into a glue basin by a circulating pump, 2116 cloth is soaked in the mixed liquid in the glue basin, and then is put into an oven with the temperature of 120 ℃ for baking, and then is cooled to obtain the prepreg, and the prepreg is cut into the required size and stored in a dark place;
(3) superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich structure to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
(4) feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 ℃ under the pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
(5) disassembling the pressed plate from the stainless steel plate;
(6) and cutting edges of the plate separated from the stainless steel plate to obtain the 3D forming composite material without rebounding.
3. The non-rebound 3D forming composite material is characterized by being formed by hot-pressing at least one layer of prepreg, wherein the prepreg is prepared by soaking a reinforcing material in a mixed solution and then baking the reinforcing material, and the preparation method of the composite material comprises the following steps:
(1) preparing a mixed solution, namely preparing 120kg of thermoplastic acrylic resin with 50% of solid content, 40kg of light-cured resin with 100% of solid content and 2.8kg of photoinitiator into the mixed solution;
(2) the mixed liquid is pumped into a glue basin by a circulating pump, 2116 cloth is soaked in the mixed liquid in the glue basin, and then is put into an oven with the temperature of 120 ℃ for baking, and then is cooled to obtain the prepreg, and the prepreg is cut into the required size and stored in a dark place;
(3) superposing 3 sheets of prepreg to obtain a sandwich structure, covering a layer of release film on each of two sides of the sandwich structure to form a plate, and superposing stainless steel plates on the two sides of the plate respectively;
(4) feeding the plate with the stainless steel plate laminated on both sides into a vacuum hot press, and pressing at 120 ℃ under the pressing pressure of 10kgf/cm2Keeping the temperature at 120 ℃ for 5 minutes after pressing, and then cooling to room temperature and taking out;
(5) disassembling the pressed plate from the stainless steel plate;
(6) and cutting edges of the plate separated from the stainless steel plate to obtain the non-rebounding 3D forming composite material.
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Denomination of invention: A non rebound 3D formed composite material and its preparation method Effective date of registration: 20231128 Granted publication date: 20200828 Pledgee: Agricultural Bank of China Limited Hangzhou Yuhang Branch Pledgor: ZHEJIANG HUAZHENG NEW MATERIAL GROUP Co.,Ltd. Registration number: Y2023980067733 |
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