CN114687214A - High-strength light-weight stab-resistant material and preparation method thereof - Google Patents
High-strength light-weight stab-resistant material and preparation method thereof Download PDFInfo
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- CN114687214A CN114687214A CN202011575932.0A CN202011575932A CN114687214A CN 114687214 A CN114687214 A CN 114687214A CN 202011575932 A CN202011575932 A CN 202011575932A CN 114687214 A CN114687214 A CN 114687214A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/55—Epoxy resins
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
Abstract
The invention relates to a high-strength lightweight stab-resistant material and a preparation method thereof, wherein the stab-resistant material is prepared from mixed liquid composite aramid fibers consisting of epoxy resin, an epoxy toughening agent, an epoxy curing agent, a silane coupling agent and the like through a prepreg hot-pressing process. The mixed solution contains 30-50 parts of epoxy resin, 1-10 parts of epoxy toughening agent, 1-10 parts of epoxy curing agent and 0-5 parts of silane coupling agent; the epoxy toughening agent is a self-made toughening agent, and is obtained by grafting and modifying epoxy resin by adopting an acrylate monomer, so that the effect of toughening the epoxy resin can be achieved, and the compatibility between the toughening agent and the epoxy resin can be improved. And uniformly mixing the mixed solution, adjusting the mixed solution to a proper viscosity by using a solvent, performing impregnation treatment on the mixed solution and the aramid woven fabric to obtain a prepreg cloth, and pressing the prepreg cloth by using a hot press. The stab-resistant fiber material obtained by the material and the method has the characteristics of high strength, light weight and good softness.
Description
Technical Field
The invention belongs to the technical field of special protective materials, and particularly relates to a high-strength lightweight stab-resistant material and a preparation method thereof.
Background
Stab-resistant clothing belongs to personal protection armor, and belongs to special protective equipment. The protective film is mainly used for protecting human bodies from being injured by sharp tools such as stabs and daggers, and has important application in the protection fields of civil use, military use, police use and the like. The stab-resistant material is used as a main body of the stab-resistant suit, and has a significant influence on stab-resistant performance and wearing comfort. The existing stab-resistant clothes mainly comprise hard stab-resistant clothes, semi-hard semi-soft stab-resistant clothes and soft stab-resistant clothes, wherein the hard stab-resistant clothes take metal materials as protective plates, and the stab-resistant clothes have good stab-resistant effect, but are heavy and not beneficial to wearing and have low wearing comfort; the semi-hard and semi-soft stab-resistant clothes adopt fiber and metal composite materials as stab-resistant protective layers, and the same stab-resistant clothes are lower in wearing comfort; the soft stab-resistant clothing is made of high-performance fiber fabrics, the structures of unidirectional tape lamination and two-dimensional fabric lamination are mainly used at present, the fabrics are generally subjected to coating treatment and then are compounded and layered, and the stab-resistant material has high stab-resistant strength and proper wearing comfort and is the main development direction of the existing stab-resistant material.
The soft stab-resistant high-performance fiber has the performances of high strength, high modulus, shear resistance, impact resistance and the like, and the current common stab-resistant fiber materials comprise ultra-high molecular weight polyethylene (UHMWPE), such as Dyneema fiber, Spectra fiber and the like; aramid fibers such as Kevlar fibers; poly-p-phenylene benzobisoxazole fibers (PBO), such as ZYLON fibers; polybutylene terephthalate (PBT), ceramic fibers, carbon fibers, polyester fibers, and the like. The main integration mode of the fiber industrialization is organic weaving and non-woven cloth, wherein the fibers of the woven cloth can be damaged by a machine in the manufacturing process, so that the puncture-proof strength of warp and weft connecting points is reduced. The stab-resistant material prepared by the composite material technology has the problem, but the strength needs to be improved continuously. Patent CN104356416 provides a method for preparing a stab-resistant material, which needs 20-40 layers of overlapping and other protective materials to effectively protect knife slashes, gun stabs, bullets and the like. Patent CN107385676 provides a flexible stab-resistant material and a preparation method thereof, and discloses a material and a process for forming by stacking two layers of stab-resistant materials according to a certain sequence and then carrying out needling and then spunlace consolidation, wherein the preparation process is complex and mainly solves the problem of poor liquid-wet penetrability. Patent CN106084595 provides a stab-resistant material of a sandwich structure of thermoplastic composite fiber, which solves the problem of poor flexibility.
The epoxy composite material is a common material, wherein the epoxy resin has rich varieties and can be combined with different high-performance fibers to form materials with different performances. Wherein, the types of the epoxy resin can be changed, and various epoxy curing agents, toughening agents and other minor components can be changed, so different results can be obtained. The epoxy resin is a good technology for reinforcing high-performance fibers, has good mechanical property and impact resistance, and effectively reduces the weight of the fibers. According to the scheme provided by the invention, the epoxy group and high-performance aramid composite stab-resistant material and the preparation method thereof have higher impact resistance, higher flexibility and lower density than the prior art, and bring comfortable wearing and better stab-resistant protection effect for downstream application.
Disclosure of Invention
In order to solve the problems, the invention discloses a high-strength lightweight stab-resistant material and a preparation method thereof, which are mainly characterized in that:
(1) uniformly mixing epoxy resin/epoxy curing agent/epoxy toughening agent/silane coupling agent to obtain a mixed solution;
(2) adding acetone into the mixed solution to adjust the viscosity, and then carrying out impregnation treatment on the acetone and the aramid woven fabric;
(3) the impregnated cloth is pressed by a hot press.
As a further scheme of the present invention, the epoxy resin/epoxy curing agent/epoxy toughening agent/silane coupling agent used in the present invention is uniformly mixed to obtain a mixed solution comprising:
30-50 parts of epoxy resin;
1-10 parts of an epoxy toughening agent;
1-10 parts of epoxy curing agent;
0-5 parts of a silane coupling agent.
As a further aspect of the present invention, the epoxy resin used in the present invention includes, but is not limited to, bisphenol A, bisphenol F, bisphenol S epoxy and modified structures thereof, and novolac epoxy and modified structures thereof.
As a further embodiment of the present invention, bisphenol A epoxy resin E51 is preferred among the epoxy resins used in the present invention.
As a further aspect of the present invention, the epoxy flexibilizers used in the present invention include, but are not limited to, non-reactive plasticizers such as small molecule plasticizers, reactive plasticizers such as polyamide resins, polysulfide rubbers, polypropylene oxide rubbers, unsaturated polyesters, polyurethanes, acrylate resins, and the like.
As a further aspect of the present invention, the epoxy toughener used in the present invention is preferably a flexible acrylate resin having a glass transition temperature of less than 50 ℃.
As a further embodiment of the present invention, the epoxy toughener used in the present invention is more preferably an acrylate resin modified epoxy toughener.
Specifically, by adopting a similar compatibility principle, the toughening effect can be achieved, and the compatibility with epoxy resin can be increased.
In a further embodiment of the present invention, the acrylate resin modified epoxy resin toughening agent used in the present invention is obtained by modifying epoxy resin E51 with one or two soft monomers such as butyl (meth) acrylate, ethyl (meth) acrylate, isooctyl (meth) acrylate, n-octyl (meth) acrylate, and dodecyl (meth) acrylate.
As a further aspect of the present invention, the acrylate resin modifying monomer used in the present invention is preferably butyl acrylate BA and isooctyl acrylate EHA.
As a further scheme of the invention, the modification method of the acrylate resin modified epoxy resin toughening agent used in the invention adopts azo or peroxide thermal initiator to carry out reaction at the temperature of 60-90 ℃.
Specifically, the thermal initiator used in the present invention generates free radicals to activate the C-H groups adjacent to the hydroxyl groups on the epoxy resin, and the thermal initiator also cleaves the acrylic double bonds to connect the cleaved bonds to the epoxy resin.
Since acrylic acid is preferably a soft monomer, the rigidity of the epoxy resin can be improved, and since side chain grafting is adopted, the cured characteristics of the main chain epoxy resin are not affected, and the strength of the epoxy resin is not affected.
As a further aspect of the present invention, there is used an azo-based or peroxide-based thermal initiator wherein the azo compound initiator comprises azobisisobutyronitrile AIBN, azobisisoheptonitrile ABVN, azobisisovaleronitrile AMBN, azobisisobutyronitrile CABN, azobiscyclohexylcarbonitrile ACCN, dimethyl azobisisobutyrate AIBME; the peroxide initiator comprises dialkyl peroxide DTBP, hydroperoxide TBHP, ketone peroxide MEKP and diacyl peroxide LP.
As a further embodiment of the present invention, the thermal initiator used in the present invention is preferably an azo compound initiator; azobisisobutyronitrile AIBN is more preferred.
In a further embodiment of the present invention, the epoxy curing agent used in the present invention includes, but is not limited to, common curing agents such as amines, acid anhydrides, carboxylic acids, phenols, and hydroxyl groups.
As a further embodiment of the present invention, the epoxy curing agent used in the present invention is preferably an amine curing agent, more preferably 3, 3-dimethyl-4, 4-diaminodicyclohexylmethane DMDC and isophoronediamine IPDA.
As a further embodiment of the present invention, the silane coupling agent used in the present invention includes, but is not limited to, amino, epoxy, hydroxyl type coupling agents, preferably amino coupling agent KH 550.
As a further scheme of the invention, the aramid woven fabric used in the invention is obtained by a weaving process of commercially available aramid fiber products of Kevlar29, Kevlar49, Kevlar149 and the like, preferably Kevlar49, aramid woven cloth with the density of 120-250g/m2 and the thickness of 0.12-0.15 mm.
As a further scheme of the invention, the impregnation process used in the invention is impregnation at room temperature for 10-30 min.
As a further scheme of the invention, the hot pressing process used by the invention is at the temperature of 100-140 ℃, the time of 10-30min and the pressure of 1-10 Mpa.
As a further scheme of the invention, the hot pressing process used by the invention preferably comprises the step of heating, wherein the first step is 100 ℃/10min/3MPa, the second step is 120 ℃/10min/5MPa, and the third step is 140 ℃/10min/8 MPa.
The technical scheme provided by the invention has the beneficial effects that:
the flexibility of the epoxy resin is enhanced by modifying the epoxy resin, and the stab-resistant material with high strength, light weight and good softness can be obtained.
Detailed Description
The present invention will be further described below by way of specific examples.
In the following specific examples, those whose operations are not subject to the conditions indicated, were carried out according to the conventional conditions or conditions recommended by the manufacturer. The raw materials used in the scheme of the invention are purchased from Chinese medicines and alatin.
Synthesis example 1
100g of epoxy resin E51 and 30g of butyl acrylate BA are mixed and added into a three-neck flask with nitrogen protection, the mixture is heated to 50 ℃ and uniformly mixed for 60min, 5g of initiator AIBN is added to dissolve the mixture, the temperature is raised to 60 ℃, the temperature is kept for 6h to obtain the butyl acrylate modified epoxy resin mixture toughening agent, and the viscosity of the obtained toughening agent is 10000-30000cps at room temperature.
Synthesis example 2
100g of epoxy resin E51 and 30g of isooctyl acrylate EHA are mixed and added into a three-neck flask with nitrogen protection, the mixture is heated to 50 ℃ and uniformly mixed for 60min, 5g of initiator AIBN is added to dissolve the mixture, the temperature is raised to 70 ℃, the temperature is kept for 6h to obtain the butyl acrylate modified epoxy resin mixture toughening agent, and the viscosity of the obtained toughening agent is 10000-20000cps at room temperature.
Synthesis example 3
100g E51 resin, 15g of butyl acrylate BA and 15g of isooctyl acrylate EHA are mixed and added into a three-neck flask with nitrogen protection, the mixture is heated to 50 ℃ and uniformly mixed for 60min, 5g of initiator AIBN is added to dissolve the mixture, the temperature is raised to 60 ℃, the temperature is kept for 6h to obtain the butyl acrylate modified epoxy resin mixture toughening agent, and the viscosity of the obtained toughening agent is 20000-30000cps at room temperature.
And (4) evaluating the toughening effect of the toughening agent, and representing the toughening effect of the epoxy resin by the toughening agent by adopting elongation at break and impact strength. The breaking elongation test method refers to GB/T3923.1-1997, and the impact strength is tested by adopting an impact tester under the condition of 24J impact energy. The test formulations are referenced below:
the test results were as follows:
| elongation at break | Impact strength/24J | |
| Blank (formula without toughening agent) | 5.1％ | Surface cracking |
| Synthesis example 1 | 6.8％ | Micro-cracks appear on the surface |
| Synthesis example 2 | 8.8％ | The surface is indented |
| Synthesis example 3 | 7.4％ | Surface integrity |
According to the experimental results, the toughening agents in the following embodiments are all the toughening agents in synthesis example 3.
Example 1
Stirring and mixing 30g E51 g, 2g of the toughening agent of the synthetic example 3, 10g of DMDC and 1g of KH550 at room temperature to obtain a transparent clear liquid, adding acetone to adjust the viscosity, soaking Kevlar49 woven fabric (with the surface density of 168g/m2 and the thickness of 0.15mm) in the mixed liquid for 20min, taking out the mixture, transferring the mixture into a flat plate hot press after the acetone is volatilized, and carrying out hot pressing in a first-stage heating mode of 100 ℃/10min/3MPa, a second-stage heating mode of 120 ℃/10min/5MPa and a third-stage heating mode of 140 ℃/10min/8MPa to obtain the stab-resistant material, and cutting the stab-resistant material into a certain shape to be tested for use through simple post-treatment.
Example 2
Stirring and mixing 30g E51 g, 8g of the toughening agent in the synthesis example 3, 5g of DMDC and 1g of KH550 at room temperature to obtain a transparent clear liquid, adding acetone to adjust the viscosity, soaking Kevlar49 woven fabric (with the surface density of 168g/m2 and the thickness of 0.15mm) in the mixed liquid for 20min, taking out the mixture, transferring the mixture into a flat plate hot press after the acetone is volatilized, and carrying out hot pressing in a first-stage heating mode of 100 ℃/10min/3MPa, a second-stage heating mode of 120 ℃/10min/5MPa and a third-stage heating mode of 140 ℃/10min/8MPa to obtain the stab-resistant material, and cutting the stab-resistant material into a certain shape to be tested for use through simple post-treatment.
Example 3
Stirring and mixing 50g E51 g, 5g of the toughener prepared in the synthesis example 3, 10g of DMDC and 4g of KH550 at room temperature to obtain a transparent clear liquid, adding acetone to adjust the viscosity, soaking Kevlar49 woven fabric (with the areal density of 168g/m2 and the thickness of 0.15mm) in the mixed liquid for 20min, taking out the acetone to volatilize, transferring the acetone into a flat plate hot press, and performing hot pressing in a first-stage heating mode of 100 ℃/10min/3MPa, a second-stage heating mode of 120 ℃/10min/5MPa and a third-stage heating mode of 140 ℃/10min/8MPa to obtain the stab-resistant material, and cutting the stab-resistant material into a certain shape to be tested for use after simple post-treatment.
Example 4
Stirring and mixing 50g E51, 5g PBA, 10g IPDA and 4g KH550 at room temperature to obtain a transparent clear liquid, adding acetone to adjust the viscosity, soaking Kevlar49 woven fabric (the areal density is 150g/m2 and the thickness is 0.13mm) in the mixed liquid for 30min, taking out the mixture, transferring the mixture into a flat hot press after the acetone is volatilized, and performing hot pressing in a heating mode of 100 ℃/10min/3Mpa at the first stage, 120 ℃/10min/5Mpa at the second stage and 140 ℃/10min/8Mpa at the third stage to obtain the stab-resistant material, and cutting the stab-resistant material into a certain shape to be tested and used after simple post-treatment.
Example 5
Stirring and mixing 50g E51 g, 7g of the toughening agent of synthesis example 3, 5g of DMDC, 5g of IPDA and 4g of KH550 at room temperature to obtain a transparent clear liquid, adding acetone to adjust the viscosity, soaking Kevlar49 woven fabric (with the area density of 150g/m2 and the thickness of 0.13mm) in the mixed liquid for 30min, taking out the mixed liquid, transferring the acetone to a flat plate hot press after volatilization, and performing hot pressing in a heating mode of 100 ℃/10min/3Mpa at the first stage, 120 ℃/10min/5Mpa at the second stage and 140 ℃/10min/8Mpa at the third stage to obtain the stab-resistant material, and cutting the stab-resistant material into a certain shape to be tested for use after simple treatment.
And (3) softness testing:
testing the softness of the composite fabric by adopting a three-point bending mode, manufacturing a sample into a single piece of 30cm x 5cm, placing two ends of the single piece on a bending clamp, wherein the distance between two clamp points is 15cm, naturally suspending the fabric, and measuring the softness by comparing the suspended height;
and (3) testing the puncture resistance:
according to the A-class test requirements of GA68-2019 police stab-resistant clothing; a5 mm buffer sponge (foamed EVA) was superimposed on the test.
The comparative tests of the examples show that the stab-resistant material prepared by the technical scheme of the invention only needs 17-20 layers to meet the stab-resistant performance requirements of GA68-2019 police stab-resistant clothes A, while most products sold in the market generally need 30-40 layers; the lower number of layers can obtain lighter weight, and meanwhile, the soft degree and the stab-resistant performance are better, and the advantages brought by the technical scheme of the invention are met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (19)
1. A high-strength lightweight stab-resistant material and a preparation method thereof are mainly characterized by comprising the following steps:
(1) uniformly mixing epoxy resin/epoxy curing agent/epoxy toughening agent/silane coupling agent to obtain a mixed solution;
(2) adding acetone into the mixed solution to adjust the viscosity, and then carrying out impregnation treatment on the acetone and the aramid woven fabric;
(3) the impregnated cloth is pressed by a hot press.
2. The mixed liquor according to claim 1, which is characterized by comprising:
30-50 parts of epoxy resin;
1-10 parts of an epoxy toughening agent;
1-10 parts of epoxy curing agent;
0-5 parts of a silane coupling agent.
3. The method of claim 2, wherein the epoxy resin used in the present invention includes, but is not limited to, bisphenol a, bisphenol F, bisphenol S epoxy and modified structures thereof, and novolac epoxy and modified structures thereof.
4. According to claim 2, the epoxy resin used in the present invention is preferably bisphenol A epoxy resin E51.
5. The method according to claim 2, characterized in that the epoxy toughening agent used in the present invention includes but is not limited to non-reactive plasticizers such as small molecule plasticizers, reactive plasticizers such as polyamide resins, polysulfide rubbers, polypropylene oxide rubbers, unsaturated polyesters, polyurethanes, acrylate resins, etc.
6. According to claim 2, characterized in that the epoxy toughener used in the present invention is preferably a flexible acrylate resin with a glass transition temperature of less than 50 ℃.
7. According to claim 2, characterized in that the epoxy toughener used in the present invention is more preferably an acrylate resin modified epoxy toughener.
8. The method of claim 7, wherein the acrylic ester resin modified epoxy resin toughening agent used in the invention is used for modifying the epoxy resin E51 by using one or two of soft monomers such as butyl (meth) acrylate, ethyl (meth) acrylate, isooctyl (meth) acrylate, n-octyl (meth) acrylate, dodecyl (meth) acrylate and the like.
9. The method according to claim 8, wherein the acrylate resin modifying monomers used in the present invention are preferably butyl acrylate BA and isooctyl acrylate EHA.
10. The method of claim 7, wherein the acrylic resin modified epoxy resin toughening agent is modified by using azo or peroxide thermal initiator at 60-90 ℃.
11. The method according to claim 10, wherein the azo or peroxide thermal initiator used in the present invention comprises azo compound initiators including azobisisobutyronitrile AIBN, azobisisoheptonitrile ABVN, azobisisovaleronitrile AMBN, azobisisobutyronitrile CABN, azobisdicyclohexylcarbonitrile ACCN, dimethyl azobisisobutyrate AIBME; the peroxide initiator comprises dialkyl peroxide DTBP, hydroperoxide TBHP, ketone peroxide MEKP and diacyl peroxide LP.
12. The process according to claim 11, wherein the thermal initiator used in the process is preferably an azo compound initiator; more preferably azobisisobutyronitrile AIBN.
13. The method of claim 2, wherein the epoxy curing agent used in the present invention includes, but is not limited to, amines, acid anhydrides, carboxylic acids, phenols, hydroxyl group, and other common curing agents.
14. The process according to claim 13, wherein the epoxy curing agent used according to the invention is preferably an amine curing agent, more preferably 3, 3-dimethyl-4, 4-diaminodicyclohexylmethane DMDC and isophoronediamine IPDA.
15. The method according to claim 2, wherein the silane coupling agent used in the present invention includes, but is not limited to, amino, epoxy, and hydroxyl type coupling agents, preferably amino coupling agent KH 550.
16. The method as claimed in claim 1, wherein the aramid woven fabric used in the invention is obtained by weaving processes of commercially available aramid fiber products such as Kevlar29, Kevlar49, Kevlar149 and the like, preferably Kevlar49, aramid woven cloth with a density of 120 and 250m2/g and a thickness of 0.12-0.25 mm.
17. The method of claim 1, wherein the impregnation process is performed at room temperature for 10-30 min.
18. The method as claimed in claim 1, wherein the hot pressing process used in the present invention is performed at a temperature of 100 ℃ and 140 ℃ for a time of 10-30min and at a pressure of 1-10 MPa.
19. The method as claimed in claim 18, wherein the hot pressing process used in the present invention is preferably performed in stages of temperature rise, the first stage being 100 ℃/10min/3Mpa, the second stage being 120 ℃/10min/5Mpa, and the third stage being 140 ℃/10min/8 Mpa.
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2020
- 2020-12-28 CN CN202011575932.0A patent/CN114687214A/en active Pending
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|---|---|---|---|---|
| US20040069405A1 (en) * | 2002-10-14 | 2004-04-15 | Hachikian Zakar Raffi | Two-part epoxy adhesives with improved flexibility and process for making and using same |
| CN103184695A (en) * | 2013-04-17 | 2013-07-03 | 东华大学 | Resin-formed flexible puncture-proof fabric and preparation method thereof |
| CN104356416A (en) * | 2014-11-14 | 2015-02-18 | 西安超码复合材料有限公司 | Method for preparing special shielding material |
| CN105646797A (en) * | 2016-04-01 | 2016-06-08 | 烟台德邦科技有限公司 | Method for synthesizing acrylic ester modified epoxy toughening agents |
| CN108467569A (en) * | 2018-04-03 | 2018-08-31 | 安徽农业大学 | A kind of preparation method of civilian local compliance thorn-proof composite material |
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| 袁红萍: "《纺织精细化学品》", 东华大学出版社, pages: 114 - 116 * |
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