CN101549561A - Method for producing epoxy resin insulation sheet material and press equipment thereof - Google Patents
Method for producing epoxy resin insulation sheet material and press equipment thereof Download PDFInfo
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- CN101549561A CN101549561A CNA2009101308733A CN200910130873A CN101549561A CN 101549561 A CN101549561 A CN 101549561A CN A2009101308733 A CNA2009101308733 A CN A2009101308733A CN 200910130873 A CN200910130873 A CN 200910130873A CN 101549561 A CN101549561 A CN 101549561A
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Abstract
The invention discloses a method for producing epoxy resin insulation sheet material and press equipment thereof, wherein the produce method comprising: preparation of curing agent, preparation of epoxy resin adhesive, gluing for glass fibre cloth and insulation board pressing by a press. The invention also relates to a press for producing the epoxy resin insulation board, comprising upper and lower beams, a plurality of parallel guide rods are fixed at two sides of the upper and lower beams and clips the upper and lower beams for controlling the movement of the upper and lower beams; a plurality of pressure cylinders are fixed out of the upper beam or the lower beam, a hot plate is fixed on surface where the upper beam is opposite to the lower beam, through-holes are fixed on both sides of the hot plate, a water pipe is fixed in the through-hole, the water pipes at two ends is communicated. The equipment of the invention raises integral length of molding plate, convenient to transport, the molding plate can be cut as require, thereby reducing wastage of raw material, saving production cost, and raising production efficiency and quality of products.
Description
Technical field
The present invention relates to a kind of epoxy resin fiberglass cloth and make the production method and the equipment of insulation board, especially relate to a kind of produce epoxy resin insulation sheet material production method and press equipment thereof.
Background technology
Epoxy resin insulation sheet material is to be made by epoxy resin and glass fabric, mechanical performance height at high temperature, and at high temperature electric property is stable.Be applicable to that machinery, electrical equipment and electronics with high insulation system parts, have high machinery and dielectric properties, better heat-resisting and moisture resistivity.Make in the process of insulation board at existing epoxy resin fiberglass cloth, owing to be subjected to the restriction of production technology and forcing press, can only production length short insulation board, be generally about ten meters, can not make longer insulation board, and in use, need constantly cut out raw material, cause raw-material significant wastage.
Summary of the invention
Technical problem to be solved by this invention provide a kind of can once make sufficient length, save material and make things convenient for epoxy resin insulation sheet material that raw material use production method and press equipment thereof.The present invention has overcome the problem that above-mentioned prior art exists, and can produce to reach 100-200 rice, even length reaches the insulation board and the special-purpose press equipment of 200-300 rice.
Technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of production method of producing epoxy resin insulation sheet material provided by the invention, it comprises, the preparation of glue, glass fabric gluing, compacting; Key step is: (1) forms epoxide-resin glue with epoxy resin and curing agent mixing and stirring, puts into the glue groove of gluing machine then; (2) glass fabric is passed through the glue groove, it be impregnated in the interior epoxide-resin glue of glue groove, drying forms epoxy resin fiberglass cloth again; (3) as required epoxy resin fiberglass cloth is pressed into insulation board with forcing press;
Described curing agent is dimethyl formamide and the dicyandiamide mixture according to weight ratio 1: 0.5-1.5, because dimethyl formamide is the good solvent of high polarity, can well dissolved powders shape dicyandiamide, and both are mixed stirring promptly can be made into required curing agent.
Described curing agent and weight epoxy are than being 0.05-0.15: 1, at room temperature earlier epoxy resin is added mixer, and under 100-200 rev/min, stir, curing agent is added to continue to be stirred to then and mix the formation epoxide-resin glue.
Described epoxy resin is resistant to elevated temperatures epoxy series plastics: as F51 resin and novolac epoxy resin.
Described glass fabric heats up through the stage earlier in gluing machine by the glue groove of epoxide-resin glue is housed; Described stage heat up for glass fabric and epoxide-resin glue with weight portion 7: 3-3: 7 ratio earlier temperature 100-120 ℃ dry down, be warming up to then 130-150 ℃ continue down dry, at last in 160-180 ℃ of drying down.
Described glass fabric is by being equipped with the glue groove of epoxide-resin glue, in gluing machine, lower the temperature through the stage, the cooling of described stage for glass fabric and epoxide-resin glue with weight portion 7: 3-3: 7 ratio is earlier temperature 160-180 ℃ of drying down, being cooled to 130-150 ℃ then continues dry, dry down in 100-120 ℃ at last down.
Every pressing one-time during described insulation board is produced promptly stops 4-6 hour every 6 meters, and connecting portion is fully solidified, and insulation board length reaches 200-300 rice.
The present invention also provides the forcing press of producing the production method of epoxy resin insulation sheet material, contains upper and lower beam, and there are a plurality of guide rods that be arranged in parallel last underbeam both sides, and upper and lower beam is clamped, and is used for controlling moving of underbeam; Be provided with outside upper beam or underbeam and be provided with some pressure cylinders, the face that last underbeam is relative is provided with hot plate, and the two ends of described hot plate are provided with through hole, are provided with water pipe in through hole, and the water pipe at two ends interconnects.
Described pressure cylinder is positioned at the underbeam bottom, and it is fixing to put the beams in place; Or described pressure cylinder is positioned at upper beam top, and underbeam is fixed; Or described pressure cylinder is positioned at upper beam top, the underbeam bottom, and two groups of pressure cylinders are to pressure work, and pressing pressure is controlled to be 40-80kg/cm
2
The through hole at described hot plate two ends is for being at least two, and the through hole between a pair of hot plate links into an integrated entity by pipeline.
Distance is 8-12cm between the two through hole of the every end of described hot plate.
The present invention has following technique effect with respect to prior art:
1, use production technology of the present invention, feedstock production is simple, and process flow steps is few, and the process conditions gentleness is with short production cycle, easy to operate; Production technology of the present invention can be produced the epoxy resins insulation plate that reaches 50-200 rice in conjunction with commercially available press equipment.
2, the proprietary cooling water pipe of production equipment forcing press of the present invention by in its hot plate, being provided with, realized the possibility of continuous production insulation board, can produce in conjunction with production technology of the present invention and to reach 200-300 rice epoxy resins insulation plate, has enough use length, convenient transportation, cutting as required in the use has reduced raw-material waste, has saved production cost and production efficiency and product quality height.
Description of drawings
Fig. 1 is this press structure schematic diagram
Fig. 2 faces structural representation for hot plate of this forcing press
Fig. 3 is the structural representation behind the connection water pipe of two blocks of hot plates
The specific embodiment
Gluing machine in the production equipment of the present invention is a vertical gluing machine, finish via the commercially available vertical impregnation drying process units of TL1500-L type, its process speed is 4-15m/min (frequency conversion is adjustable), production wide cut≤1300mm, volatile matter＜0.5%, oven temperature 100-200 ℃, conduction oil temperature≤280 ℃; Forcing press is the special pressure machine of the embodiment of the invention 5, and its hot plate specification is 500 * 6500 * 90 (mm); The hot plate compressive load per unit area is 8Mpa; The hot plate surface depth of parallelism≤0.15mm; The nominal mold clamping force is 2600 tons (26MN), and system's nominal pressure is 16.5Mpa, pressure maintaining performance per hour pressure fall≤10%; The master cylinder diameter is Φ 500mm * 8 covers, and the master cylinder range is 500mm, and master cylinder is arranged single single-row; Hot plate spacing 500mm; 1 layer of the work number of plies; Closure pressing speed 〉=4mm/s; Hydraulic drive motor power 3KW+3KW+5.5KW; Mode of heating is that every layer of hot plate has oil heating (upper strata) and water cooling (lower floor) respectively, every layer each minute six district control respectively; Frame mode is the deckle board formula, and its deckle board is thickness 50mm, side thickness 250mm, depth of beam 550mm up and down; Entablature, movable platform 6500 * 500 * 450 (length * wide * height) are welded by the Q235-A steel plate; Main frame appearance and size about 1130 * 6500 * 2850.
Its concrete production technology is as follows:
1, at room temperature epoxy resin is added mixer, under 200 rev/mins, stir;
2, dicyandiamide is added dimethyl formamide, described dimethyl formamide and dicyandiamide were according to weight ratio 1: 0.5, and mixing and stirring forms curing agent;
3, at room temperature, gained curing agent in 2 is joined epoxy resin in 1, described curing agent is 0.05: 1 with the weight epoxy ratio, continues to be stirred to 200 rev/mins to mix the formation epoxide-resin glue;
4,, add the glue groove of gluing machine with the epoxide-resin glue of making;
5, glass fabric is passed through the glue groove, it be impregnated in the epoxide-resin glue, glass fabric and epoxide-resin glue flood with 7: 3 ratio of weight portion;
6, with in 5 through impregnation, the epoxy resin fiberglass cloth after the dipping metering is put into the baking oven of gluing machine, successively heats up through the stage and the stage lowers the temperature and carries out drying.Wherein said stage intensification is dry down 100 ℃ of temperature earlier for the glass fabric of epoxy resin-impregnated glue, being warming up to 130 ℃ then continues dry down, at last after 160 ℃ of following dryings, then carrying out cooling and drying handles, described stage cooling is that glass fabric and epoxide-resin glue are dry down 160 ℃ of temperature earlier with 7: 3 ratio of weight portion, being cooled to 130 ℃ then continues dry, dry down in 100 ℃ at last down.
7, epoxy resin fiberglass cloth is put into forcing press as requested and suppress, pressure is controlled at 60kg/cm
2
8, forcing press cold water in work flows to from an end water pipe of hot plate, spill out from the other end, the hot plate temperature that makes water inlet end is 70% of a hot plate middle part temperature, the molding bonded degree that causes the epoxy resin fiber cloth at this place is 70%, there is not complete moulding, after treating other position moulding, insulation board after the pulling moulding is pushed ahead, the position of not complete moulding is placed between two blocks of hot plates of water side, because the local temperature of the hot plate at position, water side reaches 90% of hot plate middle part temperature, can be with the not part machine-shaping of moulding just now; Every pressing one-time promptly stops 6 hours every 6 meters, and connecting portion is fully solidified, and so repeatedly, can make long insulation board continuously, and length reaches 200-300 rice.
Gluing machine in the production equipment of the present invention is a vertical gluing machine, finishes via the commercially available vertical impregnation drying process units of TL1500-L type; Forcing press is the special pressure machine of the embodiment of the invention 5, and its hot plate specification is 500 * 6500 * 90 (mm); The hot plate compressive load per unit area is 8Mpa; The hot plate surface depth of parallelism≤0.15mm; The nominal mold clamping force is 2600 tons (26MN), and system's nominal pressure is 16.5Mpa, pressure maintaining performance per hour pressure fall≤10%; The master cylinder diameter is Φ 500mm * 8 covers, and the master cylinder range is 500mm, and master cylinder is arranged single single-row; Hot plate spacing 500mm; 1 layer of the work number of plies; Closure pressing speed 〉=4mm/s; Hydraulic drive motor power 3KW+3KW+5.5KW; Mode of heating is that every layer of hot plate has oil heating (upper strata) and water cooling (lower floor) respectively, every layer each minute six district control respectively; Frame mode is the deckle board formula, and its deckle board is thickness 50mm, side thickness 250mm, depth of beam 550mm up and down; Entablature, movable platform 6500 * 500 * 450 (length * wide * height) are welded by the Q235-A steel plate; Main frame appearance and size about 1130 * 6500 * 2850.
Its concrete production technology is as follows:
1, at room temperature epoxy resin is added mixer, under 150 rev/mins, stir;
2, dicyandiamide is added dimethyl formamide, described dimethyl formamide and dicyandiamide form curing agent according to 1: 1.5 mixing and stirring of weight ratio;
3, at room temperature, gained curing agent in 2 is joined epoxy resin in 1, described curing agent is 0.15: 1 with the weight epoxy ratio, continues to be stirred to 150 rev/mins to mix the formation epoxide-resin glue;
4,, add the glue groove of gluing machine with the epoxide-resin glue of making;
5, glass fabric is passed through the glue groove, it be impregnated in the epoxide-resin glue, glass fabric and epoxide-resin glue flood with 3: 7 ratio of weight portion;
6, with in 5 through impregnation, the epoxy resin fiberglass cloth after the dipping metering is put into the baking oven of gluing machine, successively heats up through the stage and the stage lowers the temperature and carries out drying.Wherein said stage intensification is dry down 110 ℃ of temperature earlier for the glass fabric of epoxy resin-impregnated glue, being warming up to 140 ℃ then continues dry down, at last after 170 ℃ of following dryings, then carrying out cooling and drying handles, described stage cooling is that glass fabric and epoxide-resin glue are dry down 170 ℃ of temperature earlier with 3: 7 ratio of weight portion, being cooled to 140 ℃ then continues dry, dry down in 110 ℃ at last down.
7, epoxy resin fiberglass cloth is put into forcing press as requested and suppress, pressure is controlled at 60kg/cm
2
8, forcing press cold water in work flows to from an end water pipe of hot plate, spill out from the other end, the hot plate temperature that makes water inlet end is 70% of a hot plate middle part temperature, the molding bonded degree that causes the epoxy resin fiber cloth at this place is 70%, there is not complete moulding, after treating other position moulding, insulation board after the pulling moulding is pushed ahead, the position of not complete moulding is placed between two blocks of hot plates of water side, because the local temperature of the hot plate at position, water side reaches 90% of hot plate middle part temperature, can be with the not part machine-shaping of moulding just now; Every pressing one-time promptly stops 6 hours every 6 meters, and connecting portion is fully solidified, and so repeatedly, can make long insulation board continuously, and length reaches 200-300 rice.
Gluing machine in the production equipment of the present invention is a vertical gluing machine, and is intact via the vertical impregnation drying process units that the TL1500-L type is commercially available; Forcing press is the special pressure machine of the embodiment of the invention 5.
Its concrete production technology is as follows:
1, at room temperature epoxy resin is added mixer, under 200 rev/mins, stir;
2, dicyandiamide is added dimethyl formamide, described dimethyl formamide and dicyandiamide were according to weight ratio 1: 1, and mixing and stirring forms curing agent;
3, at room temperature, gained curing agent in 2 is joined epoxy resin in 1, curing agent and epoxy resin added by weight 0.1: 1, continued to be stirred to 200 rev/mins to mix the formation epoxide-resin glue;
4,, add the glue groove of gluing machine with the epoxide-resin glue of making;
5, glass fabric is passed through the glue groove, it be impregnated in the epoxide-resin glue, glass fabric and epoxide-resin glue flood with 5: 5 ratio of weight portion;
6, with in 5 through impregnation, the epoxy resin fiberglass cloth after the dipping metering is put into the baking oven of gluing machine, successively heats up through the stage and the stage lowers the temperature and carries out drying.Wherein said stage intensification is dry down 120 ℃ of temperature earlier for the glass fabric of epoxy resin-impregnated glue, being warming up to 150 ℃ then continues dry down, at last after 180 ℃ of following dryings, then carrying out cooling and drying handles, described stage cooling is that glass fabric and epoxide-resin glue are dry down 180 ℃ of temperature earlier with 5: 5 ratio of weight portion, being cooled to 150 ℃ then continues dry, dry down in 120 ℃ at last down.
7, epoxy resin fiberglass cloth is put into forcing press as requested and suppress, pressure is controlled at 60kg/cm
2
8, forcing press cold water in work flows to from an end water pipe of hot plate, spill out from the other end, the hot plate temperature that makes water inlet end is 70% of a hot plate middle part temperature, the molding bonded degree that causes the epoxy resin fiber cloth at this place is 70%, there is not complete moulding, after treating other position moulding, insulation board after the pulling moulding is pushed ahead, the position of not complete moulding is placed between two blocks of hot plates of water side, because the local temperature of the hot plate at position, water side reaches 90% of hot plate middle part temperature, can be with the not part machine-shaping of moulding just now; Every pressing one-time promptly stops 6 hours every 6 meters, and connecting portion is fully solidified, and so repeatedly, can make long insulation board continuously, even length reaches 200-300 rice.
Gluing machine in the production equipment of the present invention is a vertical gluing machine, finishes via the commercially available vertical impregnation drying process units of TL1500-L type; Forcing press is commercially available forcing press.
Its concrete production technology is as follows:
1, at room temperature epoxy resin is added mixer, under 150 rev/mins, stir;
2, dicyandiamide is added dimethyl formamide, described dimethyl formamide and dicyandiamide were according to weight ratio 1: 1.5, and mixing and stirring forms curing agent;
3, at room temperature, gained curing agent in 2 is joined epoxy resin in 1, described curing agent is 0.15: 1 with the weight epoxy ratio, continues to be stirred to 150 rev/mins to mix the formation epoxide-resin glue;
4,, add the glue groove of gluing machine with the epoxide-resin glue of making;
5, glass fabric is passed through the glue groove, it be impregnated in the epoxide-resin glue, glass fabric and epoxide-resin glue flood with 3: 7 ratio of weight portion;
6, with in 5 through impregnation, the epoxy resin fiberglass cloth after the dipping metering is put into the baking oven of gluing machine, successively heats up through the stage and the stage lowers the temperature and carries out drying.Wherein said stage intensification is dry down 110 ℃ of temperature earlier for the glass fabric of epoxy resin-impregnated glue, being warming up to 140 ℃ then continues dry down, at last after 170 ℃ of following dryings, then carrying out cooling and drying handles, described stage cooling is that glass fabric and epoxide-resin glue are dry down 170 ℃ of temperature earlier with 3: 7 ratio of weight portion, being cooled to 140 ℃ then continues dry, dry down in 110 ℃ at last down.
7, epoxy resin fiberglass cloth is put into forcing press as requested and suppress, pressure is controlled at 60kg/cm
2
During 8, with forcing press compacting insulation board, suppress repeatedly, fully solidify, but so factory length reaches 50-200 rice insulation board at connecting portion.
Referring to Figure of description 1, Fig. 2, Fig. 3,1-guide rod, 2-upper beam, 3-hot plate, 4-through hole, 5-underbeam, 6-pressure cylinder, 7-water pipe among the figure.
This epoxy resins insulation plate forcing press, contain upper and lower beam, there are a plurality of guide rods that be arranged in parallel last underbeam both sides, upper and lower beam is clamped, be provided with outside upper beam or underbeam and be provided with some pressure cylinders, the face that last underbeam is relative is provided with hot plate, the two ends of described hot plate are provided with through hole, be provided with water pipe in through hole, the water pipe at two ends interconnects, and described pressure cylinder is hydraulic cylinder or pneumatic cylinder.Described pressure cylinder is positioned at the underbeam bottom, and it is fixing to put the beams in place.Described pressure cylinder is positioned at upper beam top, and underbeam is fixed.Described pressure cylinder is positioned at upper beam top, the underbeam bottom, and two groups of pressure cylinders are to pressure work.The through hole at described hot plate two ends is for being at least two, and the through hole between a pair of hot plate links into an integrated entity by pipeline.
The course of work, after multilayer epoxy resin fiberglass cloth behind the gluing drawn in this forcing press, start this machine of both sides, under the pressure cylinder of both sides promotes, hot plate in the last underbeam is drawn close, the multi-layer fiber cloth of inside is heating and curing, form one, owing to be provided with through hole at the two ends of hot plate, and be installed with water pipe, hot plate end region temperature at an end of intaking is lower, general is the 60-80% of hot plate middle part temperature, so the state of cure between the multi-layer fiber cloth that this position hot plate is clamped is about 60-80%, after solidifying a period of time, the pulling multi-layer fiber cloth moves to the other end, will be between not completely crued two hot plates that are pulled into the water side of this section of water inlet end, at this section hot plate of water side since the water temperature in the water pipe improved, the temperature of this section hot plate is the 80-100% of the temperature at hot plate middle part, just not completely crued this section multilayer woven glass fabric can be finished curing, so just realized the continuity that the epoxy resins insulation plate is produced, also improved the entire length of profiled sheeting simultaneously, can make long insulation board continuously, length can reach 200-300 rice; Avoided cutting out, saved a large amount of raw materials, and production efficiency improves many.
Claims (10)
1, a kind of production method of producing epoxy resin insulation sheet material, it comprises, the preparation of glue, glass fabric gluing, compacting; Key step is: (1) forms epoxide-resin glue with epoxy resin and curing agent mixing and stirring, puts into the glue groove of gluing machine then; (2) glass fabric is passed through the glue groove, it be impregnated in the interior epoxide-resin glue of glue groove, drying forms epoxy resin fiberglass cloth again; (3) as required epoxy resin fiberglass cloth is pressed into insulation board with forcing press;
Described curing agent is dimethyl formamide and the dicyandiamide mixture according to weight ratio 1: 0.5-1.5;
Described curing agent is 0.05-0.15 with the weight epoxy ratio: 1;
2, according to the production method of the production epoxy resin insulation sheet material of claim 1, described epoxy resin is resistant to elevated temperatures epoxy series plastics: as F51 resin and novolac epoxy resin.
3, according to the production method of the production epoxy resin insulation sheet material of claim 1 or 2, the generation method of described epoxide-resin glue is: earlier epoxy resin is added mixer, under 100-200 rev/min, stir, add curing agent then, at room temperature continue to be stirred to and mix with 100-200 rev/min.
4, according to the production method of the production epoxy resin insulation sheet material of claim 1, described glass fabric heats up through the stage earlier in gluing machine by the glue groove of epoxide-resin glue is housed; Described stage heat up for glass fabric and epoxide-resin glue with weight portion 7: 3-3: 7 ratio earlier temperature 100-120 ℃ dry down, be warming up to then 130-150 ℃ continue down dry, at last in 160-180 ℃ of drying down.
5, according to the production method of the production epoxy resin insulation sheet material of claim 1 or 4, described glass fabric is by being equipped with the glue groove of epoxide-resin glue, in gluing machine, lower the temperature through the stage, the cooling of described stage for glass fabric and epoxide-resin glue with weight portion 7: 3-3: 7 ratio is earlier temperature 160-180 ℃ of drying down, being cooled to 130-150 ℃ then continues dry, dry down in 100-120 ℃ at last down.
6, according to the production method of the production epoxy resin insulation sheet material of claim 1, every pressing one-time during described insulation board is produced promptly stops 4-6 hour every 6 meters, and connecting portion is fully solidified, and insulation board length reaches 200-300 rice.
7, the forcing press of the production method of the production epoxy resin insulation sheet material of one of a kind of claim 1-6, contain upper and lower beam, there are a plurality of guide rods that be arranged in parallel last underbeam both sides, upper and lower beam is clamped, be outside equipped with some pressure cylinders at upper beam or underbeam, the face that last underbeam is relative is provided with hot plate, it is characterized in that: the two ends of described hot plate are provided with through hole, be provided with water pipe in through hole, the water pipe at two ends interconnects.
8, the forcing press of the production method of production epoxy resin insulation sheet material according to claim 7 is characterized in that: described pressure cylinder is positioned at the underbeam bottom, and it is fixing to put the beams in place; Or described pressure cylinder is positioned at upper beam top, and underbeam is fixed; Or described pressure cylinder is positioned at upper beam top, the underbeam bottom, and two groups of pressure cylinders are to pressure work.
9, according to the forcing press of the production method of the production epoxy resin insulation sheet material of one of claim 7-9, it is characterized in that: the through hole at described hot plate two ends is for being at least two, and the through hole between a pair of hot plate links into an integrated entity by pipeline.
10, according to the forcing press of the production method of the production epoxy resin insulation sheet material of claim 7, it is characterized in that: distance is 8-12cm between the two through hole of the every end of hot plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101308733A CN101549561A (en) | 2009-04-16 | 2009-04-16 | Method for producing epoxy resin insulation sheet material and press equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101308733A CN101549561A (en) | 2009-04-16 | 2009-04-16 | Method for producing epoxy resin insulation sheet material and press equipment thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215363A (en) * | 2017-12-28 | 2018-06-29 | 江阴市沪澄绝缘材料有限公司 | The production line and its production technology of brominated epoxy glass fabric insulation board |
| CN110271172A (en) * | 2019-05-22 | 2019-09-24 | 惠州龙腾运动器材有限公司 | A kind of carbon fiber bicycle part seamless pipe moulding process |
| CN111799106A (en) * | 2020-06-01 | 2020-10-20 | 深圳市峰泳科技有限公司 | Method and device for manufacturing planar capacitor |
-
2009
- 2009-04-16 CN CNA2009101308733A patent/CN101549561A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215363A (en) * | 2017-12-28 | 2018-06-29 | 江阴市沪澄绝缘材料有限公司 | The production line and its production technology of brominated epoxy glass fabric insulation board |
| CN108215363B (en) * | 2017-12-28 | 2023-07-14 | 江阴市沪澄绝缘材料有限公司 | Production line and production process of brominated epoxy glass fiber cloth insulating board |
| CN110271172A (en) * | 2019-05-22 | 2019-09-24 | 惠州龙腾运动器材有限公司 | A kind of carbon fiber bicycle part seamless pipe moulding process |
| CN111799106A (en) * | 2020-06-01 | 2020-10-20 | 深圳市峰泳科技有限公司 | Method and device for manufacturing planar capacitor |
| CN111799106B (en) * | 2020-06-01 | 2021-04-30 | 深圳市峰泳科技有限公司 | Method and device for manufacturing planar capacitor |
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