CN110872705A - Process for plating metal layer on surface of glass fiber - Google Patents
Process for plating metal layer on surface of glass fiber Download PDFInfo
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- CN110872705A CN110872705A CN201811003538.2A CN201811003538A CN110872705A CN 110872705 A CN110872705 A CN 110872705A CN 201811003538 A CN201811003538 A CN 201811003538A CN 110872705 A CN110872705 A CN 110872705A
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- glass fiber
- metal layer
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- plating
- putting
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1851—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material
- C23C18/1872—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by chemical pretreatment
- C23C18/1886—Multistep pretreatment
- C23C18/1893—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention relates to the technical field of glass fiber production, and discloses a process for plating a metal layer on the surface of glass fiber, which needs to use a device for plating the metal layer on the surface of the glass fiber, and comprises the following steps: (1) purifying: carrying out heat treatment on the glass fiber at the temperature of 205-255 ℃; (2) coarsening: putting the deoiled glass fiber in the step (1) into a roughening solution, heating the roughening solution to 30-40 ℃, and soaking for 4-7min in a heat preservation manner; (3) cleaning: washing the roughened glass fiber with water to remove residual roughening solution on the surface of the glass fiber; (4) sensitization: putting the glass fiber cleaned in the step (3) into a sensitizing solution for sensitizing treatment at room temperature; (5) and (3) activation: directly putting the sensitized glass fiber in the step (4) into an activating solution, stirring for 3-5h, and then standing for 1-2 h; (6) cleaning; (7) and (5) drying. The invention improves the efficiency and safety of the plating.
Description
Technical Field
The invention relates to the technical field of glass fiber production, in particular to a process for plating a metal layer on the surface of glass fiber.
Background
The glass fiber is an inorganic non-metallic material with excellent performance, has the characteristics of good insulativity, strong heat resistance, good corrosion resistance, high mechanical strength and the like, is widely used in high-tech industries such as traditional industry, agriculture, building industry, electronics, communication and the like, and becomes an indispensable sustainable development high-tech material for human beings in the 21 st century. But the glass fiber has poor conductivity, so that the surface of the glass fiber is plated with a metal layer, namely, the metal plating technology is combined with the limiting surface treatment to obtain the conductive glass fiber, and the method for endowing the non-metallic material glass fiber with excellent conductivity by adopting the chemical plating technology has the advantages of low price, good product conductivity, strong antistatic capability and the like.
However, in the prior art, the process of plating the metal layer on the glass fiber is complex, manual operation is adopted in a plurality of middle links, and the glass fiber needs to be stirred and transferred in the middle of the process, so that the labor intensity of the whole process is very high, and the efficiency is low; in the production process, some chemical reagents are needed to treat the surfaces of the glass fibers, and under the condition of manual operation, the glass fibers are easy to cause harm to human health due to the close distance.
Disclosure of Invention
The invention aims to provide a process for plating a metal layer on the surface of glass fiber, which aims to solve the problems of low production efficiency and easy harm to human health caused by manual operation of multiple links in the process for plating the metal layer on the surface of the glass fiber in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the technology for plating the metal layer on the surface of the glass fiber needs to use a device for plating the metal layer on the surface of the glass fiber, and comprises the following steps:
(1) purifying: carrying out heat treatment on the glass fiber at the temperature of 205-255 ℃;
(2) coarsening: putting the deoiled glass fiber in the step (1) into a roughening solution, heating the roughening solution to 30-40 ℃, and soaking for 4-7min in a heat preservation manner;
(3) cleaning: washing the roughened glass fiber with water to remove residual roughening solution on the surface of the glass fiber;
(4) sensitization: putting the glass fiber cleaned in the step (3) into a sensitizing solution for sensitizing treatment at room temperature, so that a layer of reducing substance is adsorbed on the surface of the glass fiber;
(5) and (3) activation: directly putting the sensitized glass fiber in the step (4) into an activating solution, stirring for 3-5h, and then standing for 1-2 h;
(6) cleaning: washing the activated glass fiber with water to remove residual activating solution on the surface of the glass fiber;
(7) and (3) drying: and drying the cleaned glass fiber to obtain the glass fiber plated with the metal layer. The principle and the beneficial effects of the invention are as follows: firstly, degreasing the surface of the glass fiber at high temperature to ensure that the surface of the glass fiber can be soaked by water and prepare for roughening treatment; then coarsening the glass fiber by using coarsening liquid, increasing the surface micro roughness, the contact area and the hydrophilic capability of the glass fiber, and achieving the effect of increasing the bonding force between the surface of the glass fiber and the metal coating, thereby improving the stability of the metal layer on the glass fiber; the coarsened glass fiber is washed by clear water, and as the coarsening liquid is dissolved with water under normal conditions, the residual coarsening liquid on the glass fiber is washed by the water, so that the influence of the coarsening liquid on the sensitization effect is avoided; the sensitization treatment is that a layer of reducing liquid film with reducing function is formed on the surface of the glass fiber after the glass fiber is put into the sensitization liquid and reacts, and the sensitizing process needs to ensure that the reducing liquid film can keep the reducing capability for a long time under certain conditions so as to form a metal layer subsequently; after sensitization, directly activating the glass fiber, mainly ensuring the reducibility of a reducibility liquid film on the glass fiber, enabling the reducibility liquid film to be fully contacted with an oxidant in an activating solution through stirring and react, reducing metal ions in the activating solution into metal, depositing the metal on the surface of the glass fiber to form a metal layer, and standing mainly to enable the metal layer to be combined with the surface of the glass fiber more firmly so as to improve the effect of a coating; after activation, the glass fiber is cleaned to remove residual activating liquid, and then dried to remove water, so that the glass fiber is convenient to use and store. When the process is used for plating the metal layer on the glass fiber, manual stirring is not needed, the labor intensity is reduced, the production efficiency is improved, meanwhile, the harm of chemical reagents to the human health is avoided, and the application range of the process is expanded.
Further, in the step (1), the temperature of the heat treatment is 220 ℃. Under the temperature condition, the optimal oil removing effect can be achieved.
Further, in the step (2), the roughening solution is a mixed solution of concentrated sulfuric acid and hydrofluoric acid. The mixed solution is used for dissolving partial substances on the surface of the glass fiber, so that a plurality of large pits are formed on the surface of the glass fiber, the surface roughness of the glass fiber is increased, the surface area of the glass fiber is increased, the contact area of the coating and the glass fiber is increased, and the effect of increasing the binding force of the coating is achieved.
Further, the volume ratio of the concentrated sulfuric acid to the hydrofluoric acid is 1:1-4: 1. Under the condition, the coarsening effect is optimal.
Further, in the step (2), the coarsening temperature is 38 ℃, and the soaking is carried out for 5min under the condition of heat preservation. Under the condition, the coarsening effect is optimal.
Further, in the step (4), the sensitizing solution is a stannous chloride solution. The sensitization is not a continuous coating but only the activation sites, i.e., the nuclei. Most reducing agents are not suitable as sensitizers since they are consumed too quickly and reduce a continuous coating. The most suitable sensitizer at present is stannous chloride, and the obtained sensitizing effect is optimal.
Drawings
FIG. 1 is a schematic view of an apparatus for plating a metal layer on a surface of a glass fiber according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a treatment tank 1, a cylinder body 2, a first conduit 3, a first one-way valve 4, a piston 5, a spring 6, a piston rod 7, a bearing plate 8, a motor 9, a first through hole 10, a cam 11, a cavity 12, a heating wire 13, a three-way valve 14, a third one-way valve 15, a second conduit 16, a second through hole 17, a liquid outlet 18, a third conduit 19, a regulating valve 20, a water tank 21 and a spray head 22.
The embodiment is basically as shown in the attached figure 1:
the process for plating the metal layer on the surface of the glass fiber needs to use a device for plating the metal layer on the surface of the glass fiber, and the device comprises a rack, wherein a treatment tank 1 and four cylinder bodies 2 (only two cylinder bodies 2 are shown in the figure) are fixedly connected to the rack, a first guide pipe 3 is communicated between each cylinder body 2 and the bottom of the treatment tank 1, a first one-way valve 4 which is communicated with the treatment tank 1 in one way is installed on the first guide pipe 3, a second one-way valve (not shown in the figure) which is communicated with the cylinder body 2 and the outside and communicated with the cylinder body 2 in one way is installed on the cylinder body 2, a piston 5 is connected in the cylinder body 2 in a sliding manner, a spring 6 is welded between the piston 5 and; a bearing plate 8 for placing glass fiber is rotationally connected in the treatment tank 1, a motor 9 for driving the bearing plate 8 to rotate is fixedly connected on the frame, a plurality of first through holes 10 are formed in the bearing plate 8, the bearing plate 8 is coaxially connected with a cam 11 which is abutted against a piston rod 7, four cylinder bodies 2 are circumferentially and uniformly distributed around the cam 11, a cavity 12 which surrounds the treatment tank 1 is formed in the inner wall of the treatment tank 1, a heating element is fixedly connected in the cavity 12, the heating element is preferably a heating wire 13 in the embodiment, a three-way valve 14 and a third one-way valve 15 which is in one-way conduction from the cylinder body 2 to the cavity 12 or the treatment tank 1 are arranged on the first conduit 3, the third one-way valve 15 is positioned between the three-way valve 14 and the cylinder body 2, a second conduit 16 is communicated between the three-way valve 14 and the cavity 12, a second through hole 17 which is communicated with the treatment tank 1 is formed in the upper part of the inner wall of the treatment tank, a liquid outlet 18 is formed in the treatment tank 1, a third conduit 19 is communicated with the liquid outlet 18, and an adjusting valve 20 is arranged on the third conduit 19; the frame is also provided with a cleaning mechanism, the cleaning mechanism comprises a water tank 21 and a spray head 22 arranged above the treatment tank 1, and the spray head 22 is communicated with the water tank 21.
The method comprises the following steps:
(1) purifying: putting the glass fiber on the bearing plate 8, starting the heating wire 13, heating to the temperature of 220 ℃, and keeping the temperature to carry out heat treatment on the glass fiber so as to volatilize the grease on the surface of the glass fiber and achieve the effect of removing the grease;
(2) coarsening: closing the heating wire 13, naturally cooling the deoiled glass fiber in the step (1), adding a roughening solution into the treatment tank 1, wherein the roughening solution is a mixed solution of concentrated sulfuric acid and hydrofluoric acid, the volume ratio of the concentrated sulfuric acid to the hydrofluoric acid is preferably 2:1, starting the heating wire 13, heating the roughening solution to 38 ℃, and preserving heat and immersing for 5 min;
(3) cleaning: after roughening is finished, the heating wire 13 is closed, the regulating valve 20 is controlled to be opened, the liquid outlet 18 is opened, the water tank 21 is started, the water tank 21 supplies water to the spray head 22, the spray head 22 sprays the water to the glass fibers to clean the glass fibers, and residual roughening liquid on the surfaces of the glass fibers is removed;
(4) sensitization: after all the water in the treatment tank 1 flows out through the liquid outlet 18, the regulating valve 20 is controlled to be closed, and sensitization liquid is added into the treatment tank 1 at room temperature to perform sensitization treatment on the glass fibers, wherein the sensitization liquid is stannous chloride solution in the embodiment, so that a layer of reducing substance (stannic chloride) is adsorbed on the surfaces of the glass fibers;
(5) and (3) activation: after sensitization, controlling the regulating valve 20 to open again to enable the liquid outlet 18 to be opened, discharging the sensitization liquid in the treatment tank 1, then controlling the regulating valve 20 to close, adding the activation liquid into the treatment tank 1, stirring for 4 hours, and then standing for 1 hour;
(6) cleaning: controlling the regulating valve 20 to be opened to open the liquid outlet 18, discharging the activating liquid in the treatment tank 1, starting the water tank 21, supplying water to the spray head 22 by the water tank 21, and spraying the water to the glass fibers by the spray head 22 to clean the glass fibers;
(7) and (3) drying: after cleaning, the water tank 21 is closed, the heating wire 13 is started for heating, and the three-way valve 14 is adjusted to communicate the cylinder body 2 and the cavity 12; drive glass fiber through accepting board 8 and rotate, produce centrifugal force and throw away most water on the glass fiber, reach preliminary dewatering dry effect, piston 5 will intermittently be inflated to cavity 12 simultaneously, after the air admission cavity 12, be full of whole cavity 12 with the heat of heater strip 13, heat the drying to the glass fiber in the treatment trough 1, the air after heating through heater strip 13 will blow to accepting the glass fiber on board 8 through second through-hole 17 simultaneously, further carry out direct contact's drying to glass fiber, can make the glass fiber who has plated the metal level after the drying.
In the steps (1) to (6), except for standing for 1 hour in the step (5), the motor 9 needs to be started, the motor 9 drives the bearing plate 8 to rotate, and the bearing plate 8 drives the glass fiber to rotate, so that the glass fiber is fully contacted with the roughening solution (or the sensitizing solution and the activating solution); when the bearing plate 8 rotates, the cam 11 is driven to rotate, the piston rod 7 abuts against the cam 11, the piston rod 7 is fixedly connected with the piston 5, and the spring 6 is welded between the piston 5 and the cylinder body 2, so that when the cam 11 rotates, the piston 5 can move back and forth under the action of the cam 11 and the spring 6, the piston 5 intermittently presses air in the cylinder body 2 into the treatment tank 1 from the bottom of the treatment tank 1, and when the pressure in the cylinder body 2 is reduced, outside air enters the cylinder body 2 through the second one-way valve to supplement air.
After entering the treatment tank 1 from the bottom, the air moves upwards in the activating solution and passes through the glass fibers to increase the movement among the glass fibers, so that the glass fibers (especially the glass fibers positioned in the middle position) can be better contacted with the roughening solution (or the sensitizing solution and the activating solution), and meanwhile, as the bearing plate 8 rotates, the air forms turbulent flow in the treatment tank 1, and the stirring effect can be further enhanced; in addition, the air passes through the first through holes 10 on the receiving plate 8, and brings the roughening solution (or the sensitizing solution and the activating solution) between the glass fibers and the receiving plate 8, so that the surface of the glass fibers, which is in contact with the receiving plate 8, can be in contact with the roughening solution (or the sensitizing solution and the activating solution), and the effect of uniform treatment is achieved.
Particularly, the glass fibers are rotated in the step (1) so that the glass fibers can be heated uniformly and the purification effect is improved, air entering from the bottom of the treatment tank 1 can pass through the glass fibers, grease among the glass fibers is further taken away, volatilization of the grease is accelerated, and the purification efficiency is improved.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that variations and modifications can be made by those skilled in the art without departing from the structure of the present invention. These should also be construed as the scope of the present invention, and they should not be construed as affecting the effectiveness of the practice of the present invention or the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The process for plating the metal layer on the surface of the glass fiber is characterized by comprising the following steps: it is needed to use a device for plating a metal layer on the surface of glass fiber, which comprises the following steps:
(1) purifying: carrying out heat treatment on the glass fiber at the temperature of 205-255 ℃;
(2) coarsening: putting the deoiled glass fiber in the step (1) into a roughening solution, heating the roughening solution to 30-40 ℃, and soaking for 4-7min in a heat preservation manner;
(3) cleaning: washing the roughened glass fiber with water to remove residual roughening solution on the surface of the glass fiber;
(4) sensitization: putting the glass fiber cleaned in the step (3) into a sensitizing solution for sensitizing treatment at room temperature, so that a layer of reducing substance is adsorbed on the surface of the glass fiber;
(5) and (3) activation: directly putting the sensitized glass fiber in the step (4) into an activating solution, stirring for 3-5h, and then standing for 1-2 h;
(6) cleaning: washing the activated glass fiber with water to remove residual activating solution on the surface of the glass fiber;
(7) and (3) drying: and drying the cleaned glass fiber to obtain the glass fiber plated with the metal layer.
2. The process of plating a metal layer on the surface of a glass fiber according to claim 1, wherein: in the step (1), the temperature of the heat treatment is 220 ℃.
3. The process of plating a metal layer on the surface of a glass fiber according to claim 2, wherein: in the step (2), the roughening solution is a mixed solution of concentrated sulfuric acid and hydrofluoric acid.
4. The process of plating a metal layer on the surface of a glass fiber according to claim 3, wherein: the volume ratio of the concentrated sulfuric acid to the hydrofluoric acid is 1:1-4: 1.
5. The process of plating a metal layer on the surface of a glass fiber according to claim 4, wherein: in the step (2), the coarsening temperature is 38 ℃, and the heat preservation and the dipping are carried out for 5 min.
6. The process of plating a metal layer on the surface of a glass fiber according to claim 5, wherein: in the step (4), the sensitizing solution is a stannous chloride solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003538.2A CN110872705A (en) | 2018-08-30 | 2018-08-30 | Process for plating metal layer on surface of glass fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003538.2A CN110872705A (en) | 2018-08-30 | 2018-08-30 | Process for plating metal layer on surface of glass fiber |
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| CN110872705A true CN110872705A (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811003538.2A Pending CN110872705A (en) | 2018-08-30 | 2018-08-30 | Process for plating metal layer on surface of glass fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461323A (en) * | 2021-06-07 | 2021-10-01 | 句容市百事特复合材料有限公司 | Production method and processing equipment of silver-plated high-strength antistatic long glass fiber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503181A (en) * | 2011-10-11 | 2012-06-20 | 中北大学 | Preparation method of nickel plated glass fiber and magnetic conductive rubber thereof |
| CN104532214A (en) * | 2014-12-30 | 2015-04-22 | 安徽丹凤电子材料股份有限公司 | Preparation method of high-performance conductive glass fiber |
| CN104557095A (en) * | 2014-11-28 | 2015-04-29 | 中国建筑材料科学研究总院 | Glass fiber based composite absorbing material and preparation method thereof |
| CN106906646A (en) * | 2017-03-02 | 2017-06-30 | 昆明理工大学 | A kind of carbon fiber surface metallization treating method |
| CN108203820A (en) * | 2016-12-19 | 2018-06-26 | 宜宾市翠屏区显峰建材有限公司 | A kind of glass fibre chemistry plates Ni-Co-P alloying technologys |
| CN108220928A (en) * | 2016-12-15 | 2018-06-29 | 四川千弘达贸易有限公司 | A kind of fiberglass surfacing nickel plating technology |
-
2018
- 2018-08-30 CN CN201811003538.2A patent/CN110872705A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503181A (en) * | 2011-10-11 | 2012-06-20 | 中北大学 | Preparation method of nickel plated glass fiber and magnetic conductive rubber thereof |
| CN104557095A (en) * | 2014-11-28 | 2015-04-29 | 中国建筑材料科学研究总院 | Glass fiber based composite absorbing material and preparation method thereof |
| CN104532214A (en) * | 2014-12-30 | 2015-04-22 | 安徽丹凤电子材料股份有限公司 | Preparation method of high-performance conductive glass fiber |
| CN108220928A (en) * | 2016-12-15 | 2018-06-29 | 四川千弘达贸易有限公司 | A kind of fiberglass surfacing nickel plating technology |
| CN108203820A (en) * | 2016-12-19 | 2018-06-26 | 宜宾市翠屏区显峰建材有限公司 | A kind of glass fibre chemistry plates Ni-Co-P alloying technologys |
| CN106906646A (en) * | 2017-03-02 | 2017-06-30 | 昆明理工大学 | A kind of carbon fiber surface metallization treating method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461323A (en) * | 2021-06-07 | 2021-10-01 | 句容市百事特复合材料有限公司 | Production method and processing equipment of silver-plated high-strength antistatic long glass fiber |
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