CN109333900B - Continuous local rolling forming process method for ultrathin fibrilia composite board - Google Patents
Continuous local rolling forming process method for ultrathin fibrilia composite board Download PDFInfo
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- CN109333900B CN109333900B CN201811177110.XA CN201811177110A CN109333900B CN 109333900 B CN109333900 B CN 109333900B CN 201811177110 A CN201811177110 A CN 201811177110A CN 109333900 B CN109333900 B CN 109333900B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
- B29C59/043—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for profiled articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a continuous local rolling forming process method of an ultrathin fibrilia composite plate, belonging to the technical field of fibrilia composite plate forming processes, aiming at the problem that the existing forming process can not produce the ultrathin fibrilia composite plate with the thickness of 0.2-2mm, the invention provides a continuous rolling method for preheating a preform at a certain temperature so that the thickness of the preform can gradually reach the ultrathin thickness of 0.2-2 mm. The ultrathin fibrilia composite board prepared by the method has the characteristics of compact internal structure, good interface performance, surface texture, good comprehensive mechanical property, high molding efficiency and low cost, and can be widely applied to the fields of building decoration materials, wallpaper, surface decorative boards of composite boards and the like.
Description
Technical Field
The invention relates to a fibrilia composite board and a forming process thereof, in particular to a preparation method of an ultrathin fibrilia composite board.
Technical Field
Along with the progress of society, the requirements of people on environmental protection, energy conservation, material conservation and the like are continuously improved, the requirements on building decoration materials and wallpaper materials are higher and higher, and the market competition is strong. Environmental protection, low cost and high performance are the development trend of the series of materials. The fibrilia is used as an organic material, has good performance and is green and environment-friendly. The existing common fibrilia composite board adopts the mode of preparing felt and then molding, has low production efficiency and can not produce ultrathin fibrilia composite board. Therefore, the invention provides an ultrathin fibrilia composite board and a continuous local rolling forming process thereof, so as to realize the preparation of the ultrathin fibrilia composite board. The composite board has the characteristics of good environmental protection performance, light weight, high rigidity and strength, sound absorption and noise reduction, wide application and the like. Can be widely applied to the fields of buildings, furniture, decoration, packaging and the like, and has good application prospect.
Disclosure of Invention
The invention aims to overcome the defects of the traditional forming method and provide a continuous local rolling forming process method of an ultrathin fibrilia composite plate. The ultrathin fibrilia composite board prepared by the method has the characteristics of compact internal structure, good interface performance, surface texture, good comprehensive mechanical property, high molding efficiency and low cost, and can be widely applied to the fields of building decoration materials, wallpaper, surface decorative boards of composite boards and the like.
The specific forming scheme of the invention comprises the following contents:
1) the chopped natural hemp fibers and the thermoplastic resin-based fibers are subjected to solid-phase blending, and a felt (a prefabricated body) is prepared through opening, carding and lapping and needling consolidation, wherein the thickness of the felt is 3-10 mm. And (3) soaking the felt material into the prepared flame retardant solution, taking out the felt material and drying the felt material by hot air.
2) And carrying out online continuous heating on the coiled prefabricated body by non-contact heating, wherein the heating temperature is 100-300 ℃, and the heating time is 1-6 min.
3) Before continuous rolling, a roll body is coated with a release agent. Pre-forming the heated prefabricated body by a preheated press roller, wherein the roller gap is 2-6mm, the pre-heating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min;
4) and carrying out non-contact heating treatment on the rolled plate, wherein the heating temperature is 100-300 ℃, and the heating time is 1-4 min.
5) And then molding by a preheated second press roller, wherein the roller gap is 1-4mm, the preheating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min.
6) And then carrying out non-contact on-line heating on the rolled plate at the heating temperature of 100 ℃ and 300 ℃ for 1-4 min.
7) And then rolling by a preheated third forming press roller, wherein the preheating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min. The compression roller is provided with a microstructure, the surface microstructure is utilized to roll and form the composite board, the roll gap is 0.1-2mm, and the surface is provided with the texture with a corresponding structure. Or adding a surface decorative layer on the surface of the composite board before rolling, and directly forming the pattern on the surface decorative layer through a compression roller.
8) And cooling to prepare the ultrathin natural fibrilia reinforced thermoplastic resin matrix composite board.
Further, the hemp fiber is hemp fiber, flax fiber, ramie fiber, jute fiber, sisal fiber or a mixture thereof.
The thermoplastic resin fiber is PP, PLA, PE, PA6 or PA66 fiber.
The non-contact heating is an infrared heating furnace.
The rolling passes can be formed by 3-6 passes according to the product requirements and the process requirements. The rolling forming process is a continuous process, the required forming temperature is ensured by online heating, and the internal defects are reduced by continuous multi-pass rolling forming to form the composite board with good performance.
The surface of the forming press roller is provided with the microstructure, and the surface texture is formed on the surface of the plate after the rolling forming, so that the ultrathin fibrilia reinforced composite plate with the surface microstructure is prepared.
The surface decoration layer can be PU, non-woven fabric and the like, so that a layer of surface texture is compounded on the surface of the plate.
The invention has the beneficial effects that:
1) the forming method of continuous rolling is adopted, so that the forming efficiency can be obviously improved.
2) By adopting a multi-pass rolling forming method, the internal pores can be obviously reduced, and the mechanical property of the plate can be improved.
3) And (3) adopting a forming press roller, and utilizing the microstructure on the surface of the forming press roller to realize the surface microstructure of the plate, so as to prepare the fibrilia reinforced composite plate with surface texture.
In conclusion, the continuous local rolling forming method can obviously improve the production efficiency and is suitable for continuous forming of large-batch composite plates. The thickness of the fibrilia composite plate can reach 0.2-2mm, the width is 200-1000mm, and continuous production can be realized.
The specific implementation mode is as follows:
the technical solution of the present invention is further explained and illustrated below by way of specific examples, but the present invention is not limited to these examples.
Example 1
1) And (3) carrying out solid-phase blending, air-flow lapping and needling consolidation on the chopped hemp fibers and the PP fibers to prepare a felt material, wherein the thickness of the felt material is 5 mm. Continuously heating on line by non-contact heating at 200 deg.C for 5 min. And (3) preliminarily forming the heated prefabricated body by a preheated press roll, wherein the roll gap is 3mm, the preheating temperature of the press roll is 80 ℃, and the rolling speed is 1000 mm/min.
2) And then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 210 ℃, and the heating time is 3 min. And continuously forming by a preheated second press roller, wherein the roller gap is 2mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 1000 mm/min.
3) And then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 200 ℃, and the heating time is 2 min. And continuously rolling by a preheated third forming press roller, wherein the roller gap is 1mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 1000 mm/min. The compression roller is provided with a microstructure, and the surface microstructure is utilized to roll and form the composite board, so that the texture with a corresponding structure is formed on the surface.
4) And cooling to prepare the ultrathin natural fibrilia reinforced thermoplastic resin-based composite board with the thickness of 1.0 mm.
Example 2
1) Chopped mixed hemp fibers (hemp fibers: 1:1) and PLA fiber are subjected to solid phase blending, carding, lapping and needling consolidation to prepare a felt material, wherein the thickness of the felt material is 4 mm. And (3) immersing the felt material into the prepared ammonium polyphosphate solution, taking out the felt material and drying the felt material by hot air. And then carrying out online continuous heating by non-contact heating, wherein the heating temperature is 180 ℃, and the heating time is 6 min. And (3) preliminarily forming the heated prefabricated body by a preheated press roll, wherein the roll gap is 2mm, the preheating temperature of the press roll is 80 ℃, and the rolling speed is 800 mm/min.
2) And then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 190 ℃, and the heating time is 3 min. And continuously forming by a preheated second press roller, wherein the roller gap is 1.5mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 800 mm/min.
3) And carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 200 ℃, and the heating time is 2 min. And (3) additionally arranging a layer of surface decoration layer on the surface of the composite board, and continuously rolling by a preheated third forming press roller, wherein the roller gap is 0.8mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 800 mm/min. The compression roller is provided with a microstructure, the composite board is subjected to roll forming, and the surface of the composite board is provided with the texture with a corresponding structure.
4) And cooling to prepare the ultrathin natural fibrilia reinforced thermoplastic resin-based composite board with the thickness of 0.8 mm.
Example 3
1) And (3) carrying out solid-phase blending, carding, lapping and needling consolidation on the chopped flax fibers and the PA fibers to prepare a felt material, wherein the thickness of the felt material is 3 mm. And then carrying out online continuous heating by non-contact heating, wherein the heating temperature is 250 ℃, and the heating time is 6 min. And (3) preliminarily forming the heated prefabricated body by a preheated press roller, wherein the roller gap is 1mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 500 mm/min.
2) And then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 260 ℃, and the heating time is 2 min. And continuously forming by a preheated second press roller, wherein the roller gap is 0.8mm, the preheating temperature of the press roller is 100 ℃, and the rolling speed is 500 mm/min.
3) And then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 260 ℃, and the heating time is 2 min. And continuously rolling by a preheated third forming press roll, wherein the roll gap is 0.5mm, the preheating temperature of the press roll is 100 ℃, and the rolling speed is 500 mm/min. The compression roller is provided with a microstructure, and the surface microstructure is utilized to roll and form the composite board, so that the texture with a corresponding structure is formed on the surface.
4) And cooling to prepare the ultrathin natural fibrilia reinforced thermoplastic resin-based composite board with the thickness of 0.5 mm.
The embodiment adopts a multi-pass rolling forming method, so that the thickness and the volume of the product are reduced, the internal pores can be obviously reduced, and the mechanical property of the plate is improved.
Claims (4)
1. A continuous local rolling forming process method of an ultrathin fibrilia composite board is characterized by comprising the following steps,
1) solid-phase blending the chopped natural fibrilia and the thermoplastic resin-based fiber, and preparing a felt material through opening, carding and lapping and needling consolidation, wherein the thickness of the felt material is 3-10 mm; soaking the felt material into the prepared flame retardant solution, taking out and drying by hot air;
2) continuously heating the coiled felt material on line by non-contact heating, wherein the heating temperature is 100-300 ℃, and the heating time is 1-6 min;
3) before continuous rolling, coating a release agent on a roller body; pre-forming the heated prefabricated body by a preheated press roller, wherein the roller gap is 2-6mm, the pre-heating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min;
4) then carrying out non-contact heating treatment on the rolled plate, wherein the heating temperature is 100-300 ℃, and the heating time is 1-4 min;
5) then molding by a preheated second press roller, wherein the roller gap is 1-4mm, the preheating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min;
6) then carrying out non-contact on-line heating on the rolled plate, wherein the heating temperature is 100-;
7) rolling the blank by a preheated third forming press roller, wherein the preheating temperature of the press roller is 80-150 ℃, and the rolling speed is 500-1000 mm/min; rolling and forming the composite board with a roll gap of 0.1-2mm,
8) cooling to prepare the ultrathin natural fibrilia reinforced thermoplastic resin-based composite board;
the hemp fiber is hemp fiber, flax fiber, ramie fiber, jute fiber, sisal fiber or a mixture thereof;
the thermoplastic resin fiber is PP, PLA, PE, PA6 or PA66 fiber.
2. The continuous local rolling and forming process for ultra-thin fibrilia composite board as claimed in claim 1, wherein the non-contact heating is an infrared heating furnace.
3. The continuous local rolling forming process method for the ultrathin fibrilia composite plate as claimed in claim 1, wherein the third forming roller in step 7) is provided with a microstructure, and the microstructure is utilized to form a texture with a corresponding structure on the surface of the composite plate.
4. The continuous local rolling forming process method of the ultrathin fibrilia composite plate as claimed in claim 3, wherein before the rolling in step 7), a surface decoration layer is laid on the surface of the composite plate, and the surface decoration layer is directly formed with a pattern by a pressing roll; the surface decoration layer is PU or non-woven fabric.
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| CN201811177110.XA CN109333900B (en) | 2018-10-10 | 2018-10-10 | Continuous local rolling forming process method for ultrathin fibrilia composite board |
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| CN201811177110.XA CN109333900B (en) | 2018-10-10 | 2018-10-10 | Continuous local rolling forming process method for ultrathin fibrilia composite board |
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| CN109333900A CN109333900A (en) | 2019-02-15 |
| CN109333900B true CN109333900B (en) | 2021-03-09 |
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| CN115302867B (en) * | 2022-06-22 | 2023-09-08 | 吉林大学 | Carbon fiber/fibrilia reinforced thermoplastic composite board and preparation method thereof |
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| CN101691045A (en) * | 2009-10-14 | 2010-04-07 | 奇瑞汽车股份有限公司 | Plate and manufacture method thereof |
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| JP2006096836A (en) * | 2004-09-29 | 2006-04-13 | Kanebo Ltd | Vegetative natural fiber bundle and composite resin using the vegetative natural fiber bundle |
| CN101045310B (en) * | 2006-03-28 | 2012-04-25 | 铜陵华源汽车内饰材料有限公司 | Composite board made of natural firilia for automobile inner decoration use |
| CN101812773B (en) * | 2010-03-30 | 2011-12-14 | 奇瑞汽车股份有限公司 | Composite material for automobile interior part and production method thereof |
| CN102978830B (en) * | 2011-09-02 | 2016-04-06 | 上海杰事杰新材料(集团)股份有限公司 | A kind of glass fibre/flame-retardant polypropylene fibre light composite board and preparation method thereof |
| CN103088551A (en) * | 2011-10-27 | 2013-05-08 | 上海杰事杰新材料(集团)股份有限公司 | Light bastose and flame-retardant polypropylene fiber composite board and method for manufacturing same |
| CN102806660B (en) * | 2012-08-16 | 2014-10-15 | 上海交通大学 | Device and method for processing polymer film surface microstructure based on roll-to-roll hot rolling |
| CN107351470B (en) * | 2017-07-24 | 2019-08-16 | 重庆理工大学 | A kind of fire-retardant flaxen fiber/thermoplastic polymer composite plate and preparation method thereof |
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| CN101691045A (en) * | 2009-10-14 | 2010-04-07 | 奇瑞汽车股份有限公司 | Plate and manufacture method thereof |
| CN102218828A (en) * | 2011-05-27 | 2011-10-19 | 常州市宏发纵横新材料科技股份有限公司 | Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material |
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