CN116575229A - UHMWPE fiber and fabric surface modification and electromagnetic shielding functionalization method - Google Patents

UHMWPE fiber and fabric surface modification and electromagnetic shielding functionalization method Download PDF

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Publication number
CN116575229A
CN116575229A CN202310782813.XA CN202310782813A CN116575229A CN 116575229 A CN116575229 A CN 116575229A CN 202310782813 A CN202310782813 A CN 202310782813A CN 116575229 A CN116575229 A CN 116575229A
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China
Prior art keywords
fabrics
fibers
uhmwpe
electromagnetic shielding
fabric
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CN202310782813.XA
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Chinese (zh)
Inventor
蒋干兵
严成
俞科静
苏领高
王爽芳
颜甜甜
王卉
李梦达
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Shente High Tech Materials Co ltd
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Shente High Tech Materials Co ltd
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Priority to CN202310782813.XA priority Critical patent/CN116575229A/en
Publication of CN116575229A publication Critical patent/CN116575229A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/44Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325Amines
    • D06M13/328Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/18Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/20Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses a method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics, which comprises the following steps of S1: soaking UHMWPE fibers and fabrics in absolute ethyl alcohol, ultrasonically cleaning, taking out and drying; s2: preparing an ethanol solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, adding zinc acetate dihydrate and sodium hydroxide, immersing fibers and fabrics in the solution, placing the fibers and fabrics in a shaking table at 40-60 ℃ for reacting for 12-24 h, and oscillating at a rate of 60-120 r/min; s3: cleaning and annealing in an oven for standby; s4: preparing ZnO growing liquid; immersing the obtained fiber and fabric into a growth liquid, maintaining at 90-98 ℃ for a period of time, washing the product with deionized water, and drying in an oven to obtain the modified UHMWPE fiber and fabric. The interface adhesion performance of UHMWPE fiber or fabric and a resin matrix is improved, and meanwhile, the UHMWPE fiber or fabric has certain electromagnetic shielding performance; the preparation process for preparing ZnONps by adopting the method of codeposition of dopamine and ZnO shortens the preparation process of ZnONps by a sol-gel method.

Description

UHMWPE fiber and fabric surface modification and electromagnetic shielding functionalization method
Technical Field
The invention relates to the field of fiber and fabric surface modification, in particular to a method for modifying the surface of UHMWPE fiber and fabric and performing electromagnetic shielding functionalization.
Background
The ultra-high molecular weight polyethylene (UHMWPE) fiber and fabric composite material has excellent energy absorption characteristic and anti-elasticity, and is widely applied to the fields of military national defense such as impact resistance, bulletproof and the like. However, the UHMWPE fiber and the fabric lack of polar groups on the surface, so that the adhesion between the UHMWPE fiber and the matrix is poor, the interfacial binding force is low, the further improvement of the comprehensive performance of the UHMWPE fiber and the fabric composite is restricted, and the application of the UHMWPE fiber and the fabric composite is restricted.
Along with the continuous improvement of the modern war electronization degree, the influence of electromagnetic interference on military weaponry is not ignored, the research investment of various countries on electromagnetic shielding is gradually increased, the electromagnetic shielding technology becomes a hot spot and an important subject of research, and the electromagnetic shielding technology has wide market prospect and great significance in the military field and the civil field.
The surface modification of UHMWPE fiber and fabric can improve the interface bonding performance, and the main method comprises the following steps: plasma modification, irradiation grafting modification, chemical reagent modification, corona discharge modification, coating modification, other methods such as alkali treatment and nanoparticle introduction. The coating method is a simple and efficient method in a plurality of interface optimizing methods, and the original mechanical properties of the fiber and the fabric are not damaged.
The method has the advantages that the preparation process is long, the surface of the UHMWPE fabric is inert, the binding force with the zinc oxide nanowire is not strong enough, and the method for modifying the surface of the UHMWPE fiber and the fabric and functionalizing the electromagnetic shielding is provided.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a method for modifying the surface of UHMWPE fibers and fabrics and functionalizing electromagnetic shielding, so as to solve the problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics, comprising the steps of:
s1: soaking UHMWPE fibers and fabrics in absolute ethyl alcohol, ultrasonically cleaning, taking out and drying;
s2: preparing an ethanol solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, adding zinc acetate dihydrate and sodium hydroxide, immersing the fibers and fabrics obtained in the S1 into the solution, placing the fibers and fabrics in a shaking table at 40-60 ℃ for reacting for 12-24 h, and oscillating at 60-120 r/min;
s3: cleaning the fibers and fabrics obtained in the step S2 by using deionized water, and then putting the fibers and fabrics into a baking oven with the temperature of 90-100 ℃ for annealing for standby;
s4: uniformly mixing zinc nitrate hexahydrate and hexamethylenetetramine to prepare ZnO growing liquid; immersing the obtained fiber and fabric into a growth solution, maintaining at 90-98 ℃ for a period of time, washing the product with deionized water, and drying in an oven to obtain the modified UHMWPE fiber and fabric.
In a preferred embodiment of the present invention, the concentration of zinc acetate dihydrate in S2 is 1.0 to 1.8mM.
As a preferable embodiment of the invention, the concentration of sodium hydroxide in S2 is 0.5-1.5 mM.
As a preferable embodiment of the present invention, the concentration of zinc nitrate hexahydrate and hexamethylenetetramine in S4 is 0.02mM to 0.03mM.
The beneficial effects of the invention are as follows: co-depositing dopamine and nano zinc oxide (ZnO NPs) on the surface of UHMWPE fiber or fabric to form a coating; the interfacial property of UHMWPE fiber or fabric is improved by utilizing the self-adhesive property of dopamine, and the UHMWPE fiber or fabric has certain electromagnetic shielding property by utilizing the excellent dielectric property of ZnO NPs.
The modification method has mild reaction conditions, low-cost and easily-obtained raw materials, and is environment-friendly and sustainable; the mechanical properties of UHMWPE fibers and fabrics are not damaged, and the interface properties of the fibers and fabrics are improved, and meanwhile, the UHMWPE fibers and fabrics have certain electromagnetic shielding properties.
1. The invention improves the interface adhesion performance of UHMWPE fiber or fabric and a resin matrix and simultaneously ensures that the UHMWPE fiber or fabric has certain electromagnetic shielding performance;
2. the invention adopts the method of codeposition of dopamine and ZnO, shortens the preparation process of ZnO Nps prepared by a sol-gel method.
Detailed Description
The following detailed description of the preferred embodiments of the invention will provide those skilled in the art with a better understanding of the invention with its advantages and features, and thus define the scope of the invention more clearly and clearly.
Example 1:
s1: soaking the ultra-high molecular weight polyethylene fiber and the fabric in absolute ethyl alcohol for ultrasonic cleaning, taking out and drying;
s2: 400mL of a 40% ethanol solution containing 0.8g of dopamine hydrochloride and 0.24g of Tris (hydroxymethyl) aminomethane (Tris) was prepared, 0.12g of zinc acetate dihydrate was added, and after stirring uniformly, 35mL of 1mM sodium hydroxide was added, the fibers and fabrics obtained in S1 were immersed in the solution, and reacted in a shaker at 50℃for 24 hours at a stirring rate of 100r/min.
S3: cleaning the fibers and fabrics obtained in the step S2 by using deionized water, and then putting the fibers and fabrics into a 100 ℃ oven for annealing for standby;
s4: znO growth solution was prepared by uniformly mixing 0.025mM zinc nitrate hexahydrate and hexamethylenetetramine in a molar ratio of 1:1. The resulting fibers and fabrics were immersed in a growth solution and maintained at 95 ℃ for a period of time. The product was rinsed with deionized water and dried in an oven to obtain modified UHMWPE fibers and fabrics.
Example 2:
s1: soaking the ultra-high molecular weight polyethylene fiber and the fabric in absolute ethyl alcohol for ultrasonic cleaning, taking out and drying;
s2: preparing 400mL of 80% ethanol solution containing 0.8g of dopamine hydrochloride and 0.24g of Tris, adding 0.12g of zinc acetate dihydrate, uniformly stirring, adding 35mL of 1mM sodium hydroxide, immersing the fibers and fabrics obtained in the S1 into the solution, placing the solution in a shaking table at 50 ℃ for reaction for 24 hours, and stirring at a speed of 100r/min;
s3: cleaning the fibers and fabrics obtained in the step S2 by using deionized water, and then putting the fibers and fabrics into a 100 ℃ oven for annealing for standby;
s4: uniformly mixing 0.02mM zinc nitrate hexahydrate and hexamethylenetetramine according to a molar ratio of 1:1 to prepare ZnO growing liquid; immersing the obtained fiber and fabric into a growth solution, and keeping at 95 ℃ for a period of time; the product was rinsed with deionized water and dried in an oven to obtain modified UHMWPE fibers and fabrics.
Example 3:
s1: soaking the ultra-high molecular weight polyethylene fiber and the fabric in absolute ethyl alcohol for ultrasonic cleaning, taking out and drying;
s2: 400mL of a 20% ethanol solution containing 0.8g of dopamine hydrochloride and 0.24g of Tris (hydroxymethyl) aminomethane (Tris) was prepared, 0.12g of zinc acetate dihydrate was added, and after stirring uniformly, 35mL of 1mM sodium hydroxide was added, the fibers and fabrics obtained in S1 were immersed in the solution, and reacted in a shaker at 50℃for 24 hours at a stirring rate of 100r/min.
S3: cleaning the fibers and fabrics obtained in the step S2 by using deionized water, and then putting the fibers and fabrics into a 100 ℃ oven for annealing for standby;
s4: uniformly mixing 0.03mM zinc nitrate hexahydrate and hexamethylenetetramine according to a molar ratio of 1:1 to prepare a ZnO growing solution; immersing the obtained fiber and fabric into a growth solution, and keeping at 95 ℃ for a period of time; the product was rinsed with deionized water and dried in an oven to obtain modified UHMWPE fibers and fabrics.
Test example:
(1) Stirring and mixing epoxy resin and polyether amine curing agent according to a weight ratio of 3:1, then placing the mixture in vacuum for degassing for 15min to obtain bubble-free resin liquid, transferring a small amount of resin liquid drops to the surface of a test fiber by using a needle point, and curing the mixture at 80 ℃ for 2h to obtain a microsphere debonding sample.
The change in interfacial strength before and after modification of the fibers obtained in examples 1 to 3 was measured by microsphere debonding experiments, and the results are shown in Table 1.
(2) Testing the electromagnetic parameters of the fabric in the X wave band and calculating the electromagnetic shielding effectiveness of the fabric, and the result is as follows
Table 2 shows the results.
The invention adopts dopamine and nano zinc oxide (ZnO NPs) to codeposit on the surface of UHMWPE fiber or fabric to form a coating; the interfacial property of UHMWPE fiber or fabric is improved by utilizing the self-adhesive property of dopamine, and the UHMWPE fiber or fabric has certain electromagnetic shielding property by utilizing the excellent dielectric property of ZnO NPs.
The modification method has mild reaction conditions, low-cost and easily-obtained raw materials, and is environment-friendly and sustainable; the mechanical properties of UHMWPE fibers and fabrics are not damaged, and the interface properties of the fibers and fabrics are improved, and meanwhile, the UHMWPE fibers and fabrics have certain electromagnetic shielding properties.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (4)

1. A method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics, which is characterized in that: the method comprises the following steps:
s1: soaking UHMWPE fibers and fabrics in absolute ethyl alcohol, ultrasonically cleaning, taking out and drying;
s2: preparing an ethanol solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, adding zinc acetate dihydrate and sodium hydroxide, immersing the fibers and fabrics obtained in the S1 into the solution, placing the fibers and fabrics in a shaking table at 40-60 ℃ for reacting for 12-24 h, and oscillating at 60-120 r/min;
s3: cleaning the fibers and fabrics obtained in the step S2 by using deionized water, and then putting the fibers and fabrics into a baking oven with the temperature of 90-100 ℃ for annealing for standby;
s4: uniformly mixing zinc nitrate hexahydrate and hexamethylenetetramine to prepare ZnO growing liquid; immersing the fibers and fabrics obtained in the step S3 into a growth solution, maintaining the temperature at 90-98 ℃ for a period of time, washing the products with deionized water, and drying in an oven to obtain the modified UHMWPE fibers and fabrics.
2. A method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics according to claim 1, characterized in that: the concentration of zinc acetate dihydrate in S2 is 1.0-1.8 mM.
3. A method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics according to claim 1, characterized in that: the concentration of sodium hydroxide in S2 is 0.5-1.5 mM.
4. A method for surface modification and electromagnetic shielding functionalization of UHMWPE fibers and fabrics according to claim 1, characterized in that: the concentration of the zinc nitrate hexahydrate and the hexamethylenetetramine in the S4 is 0.02-0.03 mM.
CN202310782813.XA 2023-06-29 2023-06-29 UHMWPE fiber and fabric surface modification and electromagnetic shielding functionalization method Pending CN116575229A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117777548A (en) * 2023-12-04 2024-03-29 科迈特新材料有限公司 Modified flame retardant for high polymer material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117777548A (en) * 2023-12-04 2024-03-29 科迈特新材料有限公司 Modified flame retardant for high polymer material and preparation method thereof
CN117777548B (en) * 2023-12-04 2024-05-31 科迈特新材料有限公司 Modified flame retardant for high polymer material and preparation method thereof

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