CN115837794A - Preparation process of wing-spreading composite belt - Google Patents
Preparation process of wing-spreading composite belt Download PDFInfo
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- CN115837794A CN115837794A CN202211739976.1A CN202211739976A CN115837794A CN 115837794 A CN115837794 A CN 115837794A CN 202211739976 A CN202211739976 A CN 202211739976A CN 115837794 A CN115837794 A CN 115837794A
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Abstract
The invention relates to a preparation process of a wing-spreading composite belt, which comprises the following steps: gluing: coating glue on the surface of the first base material, and drying the surface of the base material; a wire arranging step: cutting the first substrate into base bands; the first adsorption rollers arranged in parallel absorb the base band in an angle manner; compounding: attaching the base band to the ink position of the second base material to form a composite band, and carrying out hot pressing on the composite band; a winding step: and finishing the composite belt, rolling and curing. The problems of large offset and low compounding fastness of the compounding position between the base material layer and the metal layer or the metal composite layer in the existing scheme are solved.
Description
Technical Field
The invention relates to the field of shielding composite belts, in particular to a preparation process of a winged composite belt.
Background
With the rapid development of information communication technology, higher and higher requirements are put on the transmission performance of signals and electronic information. For this reason, it is necessary to reduce signal loss and effectively prevent external interference. In a high-frequency communication cable, a conventional approach is to use a metal composite tape as a shielding layer to improve the shielding performance of the cable. The traditional shielding composite belt is formed by bonding a base material with equal width and a metal layer through an adhesive. Although the composite tape can play a role in shielding, metal is exposed on the cross section of the composite tape in the using process, so that the shielding effect is poor. Therefore, the spreading composite belt is produced as soon as possible, the spreading composite belt is formed by bonding base materials with different widths and a metal layer or a metal composite layer through an adhesive, the width of the base material layer is larger than that of the metal layer, the base material layers with the widths larger than that of the metal layers provide better insulating and metal layer coating effects, and the cable shielding performance is improved. The existing wing-spreading composite belt has the problems of large offset of the composite position between a base material layer and a metal layer or a metal composite layer, low composite fastness and the like in the preparation process.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a preparation process of a wing-spreading composite belt, so as to solve the problems of large offset and low composite fastness of a composite position between a base material layer and a metal layer or a metal composite layer in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation process of a wing-spreading composite belt;
the method comprises the following steps:
gluing: coating glue on the surface of the first base material, and drying the surface of the base material;
a wire arranging step: cutting the first substrate into base bands; the first adsorption rollers arranged in parallel absorb the base band in an angle manner;
compounding: attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band;
a winding step: and finishing the composite belt, rolling and curing.
The further technical scheme is as follows: the wire arranging step, the compounding step and the winding step also comprise a guiding and positioning step; the guiding and positioning step comprises a guiding step and a positioning step which are mutually alternated;
guiding: the base band or the composite band moves along the guide wheel;
a positioning step: the second adsorption roller adsorbs and moves the base tape or the composite tape.
The further technical scheme is as follows: in the gluing step, the first substrate material comprises but is not limited to aluminum foil, copper foil, a composite layer of aluminum foil and film, and a composite layer of copper foil and film; the glue is a composite glue of one or two compositions of polyurethane and acrylic ester; the gluing amount of the glue is 12-16g/m < 2 >; the drying temperature is 40-120 ℃; the drying wind speed is 4-8m/s.
The further technical scheme is as follows: in the wire arranging step, the non-adhesive cutter cuts the first base material into base bands; the non-adhesive cutter is provided with a glue removing assembly for cleaning glue; the glue removing component is sponge; alcohol is stored in the sponge; the angles of the first adsorption rollers which are arranged in parallel and used for adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence; the adsorption traction force of each first adsorption roller is 15-20N.
The further technical scheme is as follows: the second base material in the compounding step is a polyester film; the hot pressing temperature is 50-60 ℃; the hot pressing pressure is 0.4-0.6MPa.
The further technical scheme is as follows: the winding speed in the winding step is 10-30m/min; the curing temperature is 50-55 ℃; the curing time is 48-72h.
The further technical scheme is as follows: the groove width of the guide wheel in the guiding and positioning step is 1.01-1.05 times of the bandwidth of the base band or the composite band; the groove depth of the guide wheel is 175-500 times of the thickness of the base belt or the composite belt; the adsorption traction force of the second adsorption roller is 15-20N.
The further technical scheme is as follows: the first substrate is wrapped with a shielding layer; the preparation of the shielding layer comprises the following steps;
fabric pretreatment: soaking the polyester fabric into 25% sodium hydroxide solution; the bath ratio is 50; treating in water bath at 93-96 deg.C for 25-35min;
a cleaning and drying step: ultrasonically cleaning the polyester fabric for 20min; heating and drying the polyester fabric; the drying temperature is 70-85 ℃; the drying time is 2-3h;
preparing a composite fabric: firstly, placing the polyester fabric in a mixed solution; standing the polyester fabric for 1-1.5h; finally, placing the polyester fabric in a reaction solution;
the preparation of the sizing agent comprises the following steps: heating and mixing cyclohexanone and polyurethane according to the proportion of 1; the heating temperature is 65-70 ℃; adding iron-nickel magnetic powder step by step to mix into slurry;
and (3) a finished product preparation step: coating the sizing agent on the polyester fabric and then drying; then hot pressing into a shielding layer membrane; the drying time is 25-35min; the drying temperature is 85-90 ℃; the hot pressing temperature is 200-220 ℃; the hot-pressing thickness of the shielding layer membrane is 22-24 microns.
The further technical scheme is as follows: the preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid; the bath ratio is 50; standing the polyester fabric for 1-1.5h; finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution; the reaction time is 20-26h.
Compared with the prior art, the invention has the following beneficial technical effects: (1) The angles of the base bands adsorbed by the first adsorption rollers are sequentially excessive, so that the base bands can be bent to be excessive towards the second base material, an acute included angle is formed between the base bands and the second base material, then the base bands and the second base material are mutually attached, air is exhausted from the base bands and the second base material in the attaching process, no empty bag is generated after the base bands and the second base material are attached, the quality of the wing-spreading composite bands is guaranteed, and the composite fastness of the base bands and the second base material is improved; (2) In order to ensure that the glue can be uniformly coated on the first base material, the water content of the glue is more at the moment, but the viscosity of the glue is poorer at the moment, the water content of the glue is quickly evaporated by drying the surface of the base material, and the viscosity of the glue is improved; (3) The groove on the guide wheel is of a structure penetrating through the guide wheel, when the base band passes through the groove of the guide wheel, the position of the base band is limited by the groove width of the guide wheel and the groove depth of the guide wheel, and the horizontal position of the base band is limited by the groove width of the guide wheel, so that the base band can be accurately attached to the second base material; (4) The first base material wrapped by the shielding layer has a certain shielding effect, and the shielding effect of the composite tape is enhanced by the second base material; (5) When the polymerization reaction time of the polyaniline monomer is within 20-26h, the conductive performance of the polyester fabric is the best, the shielding efficiency of the polyester fabric is the best, the polyaniline layer in the polyester fabric improves the dielectric loss of the polyester fabric, and the polyester fabric mainly attenuates the electromagnetic wave energy irradiated to the material through the dielectric loss of the polyaniline layer; (6) The lower the resistance of the shielding layer diaphragm in the high-frequency electromagnetic field is, the larger the generated eddy current is, the better the shielding effect is, the higher the dielectric constant of the shielding layer diaphragm is in the high-frequency electromagnetic field, so that the impedance matching of the shielding layer diaphragm is poor, most of the electromagnetic waves reaching the shielding layer diaphragm are reflected, and the better shielding effect is achieved.
Drawings
FIG. 1 shows a flow diagram of a process for preparing a finned composite strip according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 shows a flow diagram of a process for preparing a finned composite strip according to an embodiment of the present invention. The invention discloses a preparation process of a wing-spreading composite belt, which is shown in a combined figure 1.
The preparation process of the wing spreading composite belt comprises the following steps:
gluing: and coating glue on the surface of the first base material, and drying the surface of the base material.
A wire arranging step: the first substrate is cut into base tapes. The first adsorption rollers arranged in parallel are used for adsorbing the base band at an angle.
Compounding: and attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band.
A winding step: and finishing the composite belt, rolling and curing.
The first substrate material in the gluing step includes, but is not limited to, aluminum foil, copper foil, a composite layer of aluminum foil and film, and a composite layer of copper foil and film. The glue is a composite glue of one or two compositions of polyurethane and acrylic ester. The gluing amount of the glue is 12-16g/m2. The drying temperature is 40-120 ℃. The drying wind speed is 4-8m/s.
The drying temperature is determined according to the gluing amount of the glue and the drying air speed. When the gluing amount of the glue is smaller, the drying temperature is lower, and the drying wind speed is lower. When the gluing amount of the glue is more, the drying temperature is higher, and the drying wind speed is higher.
The material of the first base material is adjusted according to the preparation requirement. The first base material is coiled on the unwinding roller, and when the finned composite belt needs to be prepared, the first base material on the unwinding roller is drawn out. The first substrate is coated with glue by a coating roller. The mesh number of the coating roll is 80-120 lines. In order to avoid excessive glue coating on the surface of the first substrate, the gluing amount of the glue needs to be controlled within 12-16g/m2. In order to ensure that the glue can be uniformly coated on the first base material, the water content of the glue is more at the moment, but the viscosity of the glue is poorer at the moment. Through drying the surface of the substrate, the water of the glue is quickly evaporated, and the viscosity of the glue is improved.
In the wire arranging step, the non-adhesive cutter cuts the first base material into base bands. The non-adhesive cutter is provided with a glue removing assembly for cleaning glue. The glue removing component is sponge. Alcohol is stored in the sponge. The angles of the first adsorption rollers which are arranged in parallel for adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence. The adsorption traction force of each first adsorption roller is 15-20N.
The non-adhesive cutter cuts the first base material into a plurality of base bands. And both sides of the non-adhesive cutter are provided with glue removing assemblies for cleaning glue. When the non-adhesive cutter cuts the first base material, the glue removing assembly erases the glue on the base material.
The second substrate will have an ink pattern printed thereon. The first suction roller is required to apply the base tape to the ink position of the second substrate. A set of first suction rollers sucks and moves the base tape. The group of first suction rollers consists of five first suction rollers. The angle of each first adsorption roller adsorbing the base band is 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence. Every first adsorption roller adsorbs the baseband, and the rotatory baseband that drives of first adsorption roller removes. The angle of adsorbing the base band through each first adsorption roller is excessive in sequence, so that the base band can be bent to be excessive towards the second base material, an acute angle is formed between the base band and the second base material, then the base band and the second base material are attached to each other, the base band and the second base material are discharged with air in the attaching process, no empty bag is generated after the base band and the second base material are attached to each other, the quality of the wing-spreading composite band is guaranteed, and the composite fastness of the base band and the second base material is improved.
The method also comprises a guiding and positioning step between the wire arranging step and the compounding step. The guiding and positioning steps comprise mutually alternating guiding steps and positioning steps.
Guiding: the base belt moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the base tape.
The groove width of the guide wheel in the guide positioning step is 1.01-1.05 times of the bandwidth of the baseband. The groove depth of the guide wheel is 175-500 times of the thickness of the base belt. The adsorption traction force of the second adsorption roller is 15-20N.
Before the compounding step, the base tape is accurately attached to a specific position on the second base material. The base band needs to be steered and positioned. The groove on the guide wheel is of a structure penetrating through the guide wheel. When the base band passes through the groove of the guide wheel, the position of the base band is limited by the groove width of the guide wheel and the groove depth of the guide wheel. The groove width of the guide wheel limits the horizontal position of the base belt, so that the base belt can be accurately attached to the second base material. The groove depth of the guide wheel is 175-500 times of the thickness of the base belt, so that the guide wheel is prevented from scratching the base belt or scraping glue. The rotation of the second adsorption roller drives the base band to move.
The second substrate in the compounding step is a polyester film. The hot pressing temperature is 50-60 ℃. The hot pressing pressure is 0.4-0.6MPa.
The base band laminating needs carry out the hot pressing to compound area behind the printing ink position of second substrate, guarantees that laminating that the base band can be firm at the second substrate. The glue is heated and softened at a certain hot pressing temperature, so that the viscosity between the base band and the second base material is increased. The thickness of the composite belt is ensured by applying certain hot-pressing pressure, and the glue is filled between the base belt and the second base material, so that a gap between the base belt and the second base material is avoided.
And a guiding and positioning step is also included between the compounding step and the rolling step. The guiding and positioning steps comprise mutually alternating guiding steps and positioning steps.
Guiding: the composite belt moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the composite tape.
The groove width of the guide wheel in the guiding and positioning step is 1.01-1.05 times of the width of the composite belt. The groove depth of the guide wheel is 175-500 times of the thickness of the composite belt. The adsorption traction force of the second adsorption roller is 15-20N.
In the winding step, the composite strip needs to be cut and trimmed. The position of the compounding step needs to be guided and positioned to avoid deviations in the shear finishing. When the composite belt passes through the groove of the guide wheel, the position of the composite belt is limited by the groove width of the guide wheel and the groove depth of the guide wheel. The groove width of the guide wheel limits the horizontal position of the composite belt, so that the composite belt can be accurately attached to the second base material. The groove depth of the guide wheel is 175-500 times of the thickness of the composite belt, so that the guide wheel is prevented from scratching the composite belt or scraping glue. The rotation of the second adsorption roller drives the composite belt to move.
The winding speed in the winding step is 10-30m/min. The curing temperature is 50-55 ℃. The curing time is 48-72h.
In the winding step, a slip-type air expansion shaft is adopted to trim the composite belt and then wind the composite belt. The glue is subjected to chemical reaction through curing treatment to generate cross-linking reaction, so that a reticular cross-linking structure is generated, and the composite firmness of the composite belt is improved.
The first substrate is wrapped with a shielding layer. The preparation of the shielding layer comprises the following steps.
Fabric pretreatment: the polyester fabric was immersed in a 25% sodium hydroxide solution. The bath ratio is 50:1-2.5. Treating in water bath at 93-96 deg.C for 25-35min.
A cleaning and drying step: and ultrasonically cleaning the polyester fabric for 20min. And heating and drying the polyester fabric. The drying temperature is 70-85 ℃. The drying time is 2-3h.
Preparing a composite fabric: firstly, placing the polyester fabric in the mixed solution. And standing the polyester fabric for 1-1.5h. And finally, placing the polyester fabric in the reaction solution.
The preparation of the sizing agent comprises the following steps: cyclohexanone and polyurethane were mixed as 1: and 5, heating and mixing. The heating temperature is 65-70 ℃. Adding iron-nickel magnetic powder step by step to mix into slurry.
And (3) a finished product preparation step: and (3) coating the sizing agent on the polyester fabric and then drying. And then hot-pressing into a shielding layer film. The drying time is 25-35min. The drying temperature is 85-90 ℃. The hot pressing temperature is 200-220 ℃. The hot-pressing thickness of the shielding layer membrane is 22-24 microns.
The preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid. The bath ratio is 50:1-2.5. And standing the polyester fabric for 1-1.5h. Finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution. The reaction time is 20-26h.
The first substrate material can be an aluminum foil, a copper foil, an aluminum foil and film composite layer, a copper foil and film composite layer, and a shielding layer can be wrapped on the surface of the first substrate material. The first base material wrapped by the shielding layer has a certain shielding effect, and the shielding effect of the composite belt is enhanced by the second base material at the moment.
In the fabric pretreatment step, the polyester fabric is required to be immersed in a sodium hydroxide solution, the polyester fabric is slightly etched by the sodium hydroxide, the fiber surface of the polyester fabric is smooth, a small number of grooves are formed, and the grooves increase the specific surface area of the fibers of the polyester fabric, so that aniline monomer adsorption is facilitated. The fiber surface of the dacron fabric is coated by dense polyaniline in the step of preparing the composite fabric.
The shielding effectiveness is related to the surface conductivity of the material and the wavelength of the electromagnetic wave, so that when the wavelength of the electromagnetic wave is fixed, the better the conductivity of the material is, and the better the shielding effectiveness of the material is. The terylene fabric is placed in the ferric trichloride reaction solution for reaction, the reaction time needs to be strictly controlled, the reaction time is within 20-26h, the shielding effectiveness of the terylene fabric is highest, and the raising speed is obviously reduced when the reaction time exceeds 26h. When the reaction time is gradually increased, the surface sheet resistance of the polyester fabric is gradually reduced, and the weight gain rate is gradually increased. When the polymerization reaction time of the polyaniline monomer is within 20-26h, the conductive performance of the polyester fabric is the best, and the shielding efficiency of the polyester fabric is the best.
The polyaniline layer in the polyester fabric improves the dielectric loss of the polyester fabric, and the polyester fabric mainly attenuates the electromagnetic wave energy which is transmitted to the material through the dielectric loss of the polyaniline layer.
In the slurry preparation step, the iron-nickel magnetic powder particles are flaky. The sheet structure can ensure that the magnetic moment vectors are distributed in the plane, the iron-nickel magnetic powder particles have the characteristic of plane anisotropy, namely, the out-of-plane anisotropy field is far greater than the in-plane anisotropy field, the magnetic moments are preferentially distributed in the sheet, and the resonance frequency and the magnetic conductivity can be effectively improved.
After the iron-nickel magnetic powder is heated and hot-pressed in the slurry preparation step and the finished product preparation step, the shielding layer film is in lamellar highly parallel arrangement, and at the moment, the iron-nickel magnetic powder particles have a good orientation effect.
The hysteresis loop outside the in-plane surface of the shielding layer diaphragm presents obvious anisotropy, and the magnetic moment is highly oriented in the two-dimensional plane of the shielding layer diaphragm, so that the in-plane surface becomes an easy-magnetization surface. Meanwhile, the high orientation distribution of the flaky iron-nickel magnetic powder particles in the shielding layer film is indirectly shown, the in-plane demagnetization effect is favorably reduced, and relatively high magnetic conductivity real part and imaginary part can be obtained under the action of electromagnetic waves. The shielding layer film has higher magnetic conductivity imaginary part, so that the material has higher magnetic loss capability, and finally, the electromagnetic wave is better absorbed in the shielding layer film.
The smaller the resistance of the shielding layer diaphragm in the high-frequency electromagnetic field is, the larger the eddy current is generated, and the better the shielding effect is. The dielectric constant of the shielding layer membrane is very high in a high-frequency electromagnetic field, so that the impedance matching of the shielding layer membrane is poor, most of electromagnetic waves reaching the shielding layer membrane are reflected, and a good shielding effect is achieved.
The following examples illustrate the preparation of the winged composite strip:
the first embodiment:
the preparation process of the wing spreading composite belt comprises the following steps:
the first substrate is wrapped with a shielding layer. The preparation of the shielding layer comprises the following steps.
Fabric pretreatment: the polyester fabric was immersed in a 25% sodium hydroxide solution. The bath ratio is 50:1. treating at 93 deg.C in water bath for 25min.
A cleaning and drying step: and ultrasonically cleaning the polyester fabric for 20min. And heating and drying the polyester fabric. The drying temperature was 70 ℃. The drying time is 2h.
Preparing a composite fabric: firstly, placing the polyester fabric in the mixed solution. And standing the polyester fabric for 1 hour. And finally, placing the polyester fabric in the reaction solution.
The preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid. The bath ratio is 50:1. and standing the polyester fabric for 1 hour. Finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution. The reaction time is 20h.
The preparation of the sizing agent comprises the following steps: cyclohexanone and polyurethane are mixed in a ratio of 1: and 5, heating and mixing. The heating temperature was 65 ℃. Adding iron-nickel magnetic powder step by step to mix into slurry.
And (3) a finished product preparation step: and (3) coating the sizing agent on the polyester fabric and then drying. And then hot-pressing into a shielding layer film. The drying time is 25min. The drying temperature is 85 ℃. The hot pressing temperature was 200 ℃. The hot-pressing thickness of the shielding layer membrane is 22 microns.
Gluing: and coating glue on the surface of the first base material, and drying the surface of the base material.
The first substrate material in the gluing step includes, but is not limited to, aluminum foil, copper foil, a composite layer of aluminum foil and film, and a composite layer of copper foil and film. The glue is a composite glue of one or two compositions of polyurethane and acrylic ester. The gluing amount of the glue is 12g/m < 2 >. The drying temperature was 40 ℃. The drying wind speed is 4m/s.
A wire arranging step: the first substrate is cut into base bands. The first adsorption rollers arranged in parallel are used for adsorbing the base band at an angle.
In the wire arranging step, the non-adhesive cutter cuts the first base material into base bands. The non-adhesive cutter is provided with a glue removing assembly for cleaning glue. The glue removing component is sponge. Alcohol is stored in the sponge. The angles of the first adsorption rollers which are arranged in parallel adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence. The suction traction force of each first suction roller was 15N.
And guiding and positioning. The guiding and positioning steps comprise a guiding step and a positioning step which are mutually alternated twice.
Guiding: the base tape moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the base tape.
The groove width of the guide wheel in the guide positioning step is 1.01 times of the bandwidth of the baseband. The groove depth of the guide wheel is 175 times the thickness of the base belt. The suction traction force of the second suction roller was 15N.
Compounding: and attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band.
The second substrate in the compounding step is a polyester film. The hot pressing temperature was 50 ℃. The hot pressing pressure is 0.4Mpa.
And guiding and positioning. The guiding and positioning steps comprise a guiding step and a positioning step which are mutually alternated twice.
A guiding step: the composite belt moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the composite tape.
The groove width of the guide wheel in the guiding and positioning step is 1.01 times of the width of the composite belt. The groove depth of the guide wheel is 175 times of the thickness of the composite belt. The suction traction force of the second suction roller was 15N.
A winding step: and finishing the composite belt, rolling and curing.
The winding speed in the winding step is 10m/min. The curing temperature was 50 ℃. The curing time is 48h.
The second embodiment:
the preparation process of the wing spreading composite belt comprises the following steps:
the first substrate is wrapped with a shielding layer. The preparation of the shielding layer comprises the following steps.
A fabric pretreatment step: the polyester fabric was immersed in a 25% sodium hydroxide solution. The bath ratio is 50:2. treating in water bath at 95 deg.C for 30min.
A cleaning and drying step: and ultrasonically cleaning the polyester fabric for 20min. And heating and drying the polyester fabric. The drying temperature was 75 ℃. The drying time is 2.5h.
Preparing a composite fabric: firstly, placing the polyester fabric in the mixed solution. And standing the polyester fabric for 1.5 hours. And finally, placing the polyester fabric in the reaction solution.
The preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid. The bath ratio is 50:2. and standing the polyester fabric for 1.5 hours. Finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution. The reaction time was 24h.
The preparation of the sizing agent comprises the following steps: cyclohexanone and polyurethane are mixed in a ratio of 1: and 5, heating and mixing. The heating temperature was 68 ℃. Adding iron-nickel magnetic powder step by step to mix into slurry.
And (3) a finished product preparation step: and (3) coating the sizing agent on the polyester fabric and then drying. And then hot-pressing into a shielding layer film. The drying time is 30min. The drying temperature was 88 ℃. The hot pressing temperature was 210 ℃. The hot-pressing thickness of the shielding layer film sheet was 23 μm.
Gluing: and coating glue on the surface of the first base material, and drying the surface of the base material.
The first substrate material in the gluing step includes, but is not limited to, aluminum foil, copper foil, a composite layer of aluminum foil and film, and a composite layer of copper foil and film. The glue is a composite glue of one or two compositions of polyurethane and acrylic ester. The gluing amount of the glue is 14g/m2. The drying temperature is 80 ℃. The drying wind speed is 6m/s.
A wire arranging step: the first substrate is cut into base tapes. The first adsorption rollers arranged in parallel are used for adsorbing the base band at an angle.
In the wire arranging step, the non-adhesive cutter cuts the first base material into base bands. The non-adhesive cutter is provided with a glue removing assembly for cleaning glue. The glue removing component is sponge. Alcohol is stored in the sponge. The angles of the first adsorption rollers which are arranged in parallel for adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence. The suction traction force of each first suction roller was 18N.
And guiding and positioning. The guiding and positioning steps comprise three guiding steps and three positioning steps which are mutually alternated.
Guiding: the base tape moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the base tape.
The groove width of the guide wheel in the guide positioning step is 1.03 times of the bandwidth of the baseband. The groove depth of the guide wheel is 300 times of the thickness of the base belt. The suction traction force of the second suction roller was 18N.
Compounding: and attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band.
The second substrate in the compounding step is a polyester film. The hot pressing temperature was 55 ℃. The hot pressing pressure was 0.5MPa.
And guiding and positioning. The guiding and positioning steps comprise three guiding steps and three positioning steps which are mutually alternated.
Guiding: the composite belt moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the composite tape.
The groove width of the guide wheel in the guiding and positioning step is 1.03 times of the width of the composite belt. The groove depth of the guide wheel is 300 times of the thickness of the composite belt. The suction traction force of the second suction roller was 18N.
A winding step: and finishing the composite belt, rolling and curing.
The winding speed in the winding step is 20m/min. The curing temperature was 52 ℃. The curing time is 60h.
The third embodiment:
the preparation process of the wing spreading composite belt comprises the following steps:
the first substrate is wrapped with a shielding layer. The preparation of the shielding layer comprises the following steps.
A fabric pretreatment step: the polyester fabric was immersed in a 25% sodium hydroxide solution. The bath ratio is 50:2.5. treating at 96 deg.C in water bath for 35min.
A cleaning and drying step: and ultrasonically cleaning the polyester fabric for 20min. And heating and drying the polyester fabric. The drying temperature was 85 ℃. The drying time is 3h.
Preparing a composite fabric: firstly, placing the polyester fabric in the mixed solution. And standing the polyester fabric for 1.5 hours. And finally, placing the polyester fabric in the reaction solution.
The preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid. The bath ratio is 50:2.5. and standing the polyester fabric for 1.5 hours. Finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution. The reaction time was 26h.
The preparation of the sizing agent comprises the following steps: cyclohexanone and polyurethane are mixed in a ratio of 1: and 5, heating and mixing. The heating temperature was 70 ℃. Adding iron-nickel magnetic powder step by step to mix into slurry.
And (3) a finished product preparation step: and (3) coating the sizing agent on the polyester fabric and then drying. And then hot-pressing into a shielding layer film. The drying time is 35min. The drying temperature is 90 ℃. The hot pressing temperature was 220 ℃. The hot-pressing thickness of the shielding layer membrane is 24 microns.
Gluing: and coating glue on the surface of the first base material, and drying the surface of the base material.
The first substrate material in the gluing step includes, but is not limited to, aluminum foil, copper foil, a composite layer of aluminum foil and film, and a composite layer of copper foil and film. The glue is a composite glue of one or two compositions of polyurethane and acrylic ester. The gluing amount of the glue is 16g/m2, and the drying temperature is 120 ℃. The drying wind speed is 8m/s.
A wire arranging step: the first substrate is cut into base bands. The first adsorption rollers arranged in parallel are used for adsorbing the base band at an angle.
In the wire arranging step, the non-adhesive cutter cuts the first base material into base bands. The non-adhesive cutter is provided with a glue removing assembly for cleaning glue. The glue removing component is sponge. Alcohol is stored in the sponge. The angles of the first adsorption rollers which are arranged in parallel adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence. The suction traction force of each first suction roller was 20N.
And guiding and positioning. The guiding and positioning steps comprise a guiding step and a positioning step which alternate with each other once.
Guiding: the base belt moves along the guide wheels.
A positioning step: the second adsorption roller adsorbs and moves the base tape.
The groove width of the guide wheel in the guide positioning step is 1.05 times of the bandwidth of the baseband. The groove depth of the guide wheel is 500 times of the thickness of the base belt. The suction pulling force of the second suction roller was 20N.
Compounding: and attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band.
The second substrate in the compounding step is a polyester film. The hot pressing temperature was 60 ℃. The hot pressing pressure was 0.6MPa.
And guiding and positioning. The guiding and positioning steps comprise a guiding step and a positioning step which alternate with each other once.
Guiding: the composite belt moves along the guide wheels.
A positioning step: the second suction roll sucks and moves the composite tape.
The groove width of the guide wheel in the guiding and positioning step is 1.05 times of the width of the composite belt. The groove depth of the guide wheel is 500 times of the thickness of the composite belt. The suction pulling force of the second suction roller was 20N.
A winding step: and finishing the composite belt, rolling and curing.
The winding speed in the winding step is 30m/min. The curing temperature was 55 ℃. The curing time is 72h.
TABLE 1 Performance test results for Fin-spread composite tapes
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A preparation process of a wing-spreading composite belt is characterized by comprising the following steps: the method comprises the following steps:
gluing: coating glue on the surface of the first base material, and drying the surface of the base material;
a wire arranging step: cutting the first substrate into base bands; the first adsorption rollers arranged in parallel absorb the base band in an angle manner;
compounding: attaching the base band to the ink position of the second substrate to form a composite band, and carrying out hot pressing on the composite band;
a winding step: and finishing the composite belt, rolling and curing.
2. The process for preparing a winged composite strip according to claim 1, wherein: the wire arranging step, the compounding step and the winding step also comprise a guiding and positioning step; the guiding and positioning step comprises a guiding step and a positioning step which are mutually alternated;
guiding: the base band or the composite band moves along the guide wheel;
a positioning step: the second adsorption roller adsorbs and moves the base tape or the composite tape.
3. The process for preparing a winged composite strip according to claim 2, wherein: in the gluing step, the first substrate material comprises but is not limited to an aluminum foil, a copper foil, an aluminum foil and film composite layer, and a copper foil and film composite layer; the glue is a composite glue of one or two compositions of polyurethane and acrylic ester; the gluing amount of the glue is 12-16g/m < 2 >; the drying temperature is 40-120 ℃; the drying wind speed is 4-8m/s.
4. The process for preparing a winged composite strip according to claim 3, wherein: in the wire arranging step, the non-adhesive cutter cuts the first base material into base bands; the non-adhesive cutter is provided with a glue removing assembly for cleaning glue; the glue removing component is sponge; alcohol is stored in the sponge; the angles of the first adsorption rollers which are arranged in parallel and used for adsorbing the base bands are 20 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees in sequence; the adsorption traction force of each first adsorption roller is 15-20N.
5. The process for preparing a winged composite strip according to claim 4, wherein: the second base material in the compounding step is a polyester film; the hot pressing temperature is 50-60 ℃; the hot pressing pressure is 0.4-0.6MPa.
6. The process for preparing a winged composite strip according to claim 5, wherein: the winding speed in the winding step is 10-30m/min; the curing temperature is 50-55 ℃; the curing time is 48-72h.
7. The process for preparing a winged composite strip according to claim 2, wherein: the groove width of the guide wheel in the guiding and positioning step is 1.01-1.05 times of the bandwidth of the base band or the composite band; the groove depth of the guide wheel is 175-500 times of the thickness of the base belt or the composite belt; the adsorption traction force of the second adsorption roller is 15-20N.
8. The process for preparing a winged composite strip according to claim 3, wherein: the first substrate is wrapped with a shielding layer; the preparation of the shielding layer comprises the following steps;
fabric pretreatment: soaking the polyester fabric into 25% sodium hydroxide solution; the bath ratio is 50; treating in water bath at 93-96 deg.C for 25-35min;
a cleaning and drying step: ultrasonically cleaning the polyester fabric for 20min; heating and drying the polyester fabric; the drying temperature is 70-85 ℃; the drying time is 2-3h;
preparing a composite fabric: firstly, placing the polyester fabric in a mixed solution; standing the polyester fabric for 1-1.5h; finally, placing the polyester fabric in a reaction solution;
the preparation of the sizing agent comprises the following steps: heating and mixing cyclohexanone and polyurethane according to the proportion of 1; the heating temperature is 65-70 ℃; adding iron-nickel magnetic powder step by step to mix into slurry;
and (3) a finished product preparation step: coating the sizing agent on the polyester fabric and then drying; then hot pressing into a shielding layer membrane; the drying time is 25-35min; the drying temperature is 85-90 ℃; the hot pressing temperature is 200-220 ℃; the hot-pressing thickness of the shielding layer membrane is 22-24 microns.
9. The process for preparing a winged composite strip according to claim 8, wherein: the preparation method comprises the following steps: firstly, placing the polyester fabric in a mixed solution of 0.35mol/L aniline and 0.75mol/L hydrochloric acid; the bath ratio is 50; standing the polyester fabric for 1-1.5h; finally, placing the polyester fabric in 0.45mol/L ferric trichloride reaction solution; the reaction time is 20-26h.
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