CN104553169A - Light high-strength sandwich composite board and production method - Google Patents
Light high-strength sandwich composite board and production method Download PDFInfo
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- CN104553169A CN104553169A CN201310483110.3A CN201310483110A CN104553169A CN 104553169 A CN104553169 A CN 104553169A CN 201310483110 A CN201310483110 A CN 201310483110A CN 104553169 A CN104553169 A CN 104553169A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/04—Layered products comprising a layer of synthetic resin as impregnant, bonding, or embedding substance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
- B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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Abstract
The invention relates to a light high-strength sandwich composite board and a production method thereof. The sandwich composite board is formed by pressing and connecting a laminated non-woven fabric layer, a prepreg tape layer, a light felt layer, a waste prepreg tape scrap layer, a light felt layer, a prepreg tape layer and a laminated non-woven fabric layer which are sequentially arranged from top to bottom. According to the light high-strength sandwich composite board, the high strength of prepreg tapes, the lightness of felt and filling of waste prepreg tapes are used, the waste prepreg tapes are changed into wealth, the utilization rate of the prepreg tapes is increased, resources are saved, and the cost is reduced. The density of the produced board is in a range of 1-1.2 g/cm<3>, the bending strength is higher than 70 MPa, the bending modulus is higher than 6 GPa, and the board can be applied to fields of building, transportation and the like and has the broad market prospect.
Description
Technical field
The invention belongs to field of composite material preparation, relate to a kind of light-high-strength sandwich composite board and preparation method.
Background technology
Prepreg tape is a kind of thermoplastic resin impregnated prepreg flaky material made to continuous fortifying fibre inside.Its production method has solution dipping method and melt impregnation, and which kind of method all can produce prepreg tape waste material, the leftover pieces etc. that its waste material comprises Head material, tail material, edge cut.Good treating method is not also had at present for continuous fiber reinforced thermoplastic resin base prepreg tape waste material.
Application number be 201210023736.1 Chinese patent disclose a kind of high-strength lightweight polypropylene composite board and preparation method thereof, this kind of high-strength lightweight polypropylene composite board is five-layer structure, be followed successively by the polypropylene prepreg tape top layer that continuous glass-fiber strengthens from top to bottom, finer wire stratum reticulare, glass/polypropylene mat intermediate layer, the polypropylene prepreg tape top layer that finer wire stratum reticulare and continuous glass-fiber strengthen, finer wire net is laid at the upper and lower surface of multilayer glass/polypropylene mat, two sides is descended to lay continuous glass-fiber RPP prepreg tape after compacting thereon, compacting cutting obtains high-strength lightweight polypropylene composite board.Still the process problem of prepreg tape waste material is not solved in above-mentioned patent.The application proposes to utilize continuous fiber reinforced thermoplastic resin base prepreg tape waste material to prepare light-high-strength sandwich composite board, on the basis that prepreg tape waste material is made full use of, produce a kind of lightweight, high-strength sandwich composite board, this composite plate can apply the fields such as building, traffic.
Summary of the invention
Object of the present invention is exactly provide a kind of high-strength light sandwich composite board to overcome defect that above-mentioned prior art exists, and this high-strength light sandwich composite board adopts the waste material produced when producing continuous fiber reinforced thermoplastic resin base prepreg tape.
Object of the present invention can be achieved through the following technical solutions:
A kind of light-high-strength sandwich composite board, this light-high-strength sandwich composite board is crimped formed by the film nonwoven layer of arranging successively from top to bottom, prepreg tape, lightweight carpet veneer, useless prepreg tape particle layer, lightweight carpet veneer, prepreg tape, film nonwoven layer, the two sides of described useless prepreg tape particle layer is connected with lightweight carpet veneer respectively, the outer surface of lightweight carpet veneer is connected with prepreg tape, and the outer surface of prepreg tape is connected with film nonwoven layer.
Described film nonwoven layer is made up of 1 layer of film non-woven fabrics, and described prepreg tape is made up of 2 ~ 6 layers of prepreg tape, described lightweight carpet veneer is made up of 1 layer of lightweight felt.
Described film non-woven fabrics is unit grammes per square metre 140 ~ 180g/m
2, the polypropylene film terylene non-woven fabric of thickness 0.2 ~ 0.24mm; Preferably, the white site terylene non-woven fabric of terylene non-woven fabric to be grammes per square metre be 70 ~ 90g/m2 in described polypropylene film terylene non-woven fabric.
Described prepreg tape is continuous fiber reinforced thermoplastic resin prepreg tape, and in prepreg tape, fiber quality content is 50% ~ 60%, and the thickness of prepreg tape is 0.2 ~ 0.25mm, and the density of prepreg tape is 1.3 ~ 1.5g/cm
3; Described continuous fiber is continuous glass fibre, and described thermoplastic resin is polypropylene.
Described lightweight felt is the lightweight felt that the glass fibre of polypropylene fibre and chopping is composited, and thickness is 3 ~ 5mm, surface density 1000-1600g/m
2, wherein the mass content of glass fibre is 25% ~ 65%.
Described useless prepreg tape particle layer is made up of the prepreg tape particle that gives up, described useless prepreg tape particle length is 2 ~ 80mm, and width is 2 ~ 20mm, and thickness is 0.2 ~ 0.25mm, in useless prepreg tape particle, fiber quality percentage composition is 40% ~ 50%, and density is 1.1 ~ 1.3g/cm
3.
Preferably, the waste material that described useless prepreg tape particle produces when being and producing fiber-reinforced thermoplastic resin prepreg tape is pulverized and is formed.
The preparation method of above-mentioned a kind of light-high-strength sandwich composite board, comprises the following steps:
(1) laying: by 1 pull-up mold layer lay to square framed in, again square framed in lay 1 layer of film non-woven fabrics, 2 ~ 6 layers of prepreg tape, 1 layer of lightweight felt, useless prepreg tape particle, 1 layer of lightweight felt, 2 ~ 6 layers of prepreg tape, 1 layer of film non-woven fabrics successively from the bottom up, finally square framed on lay 1 pull-up mold layer;
(2) pressing plate
After completing layer, square framed vulcanizing press of putting into is carried out hot pressing, enters cold press after hot pressing again and cold pressing, after having colded pressing, obtain described light-high-strength sandwich composite board.
Release layer described in step (1) is pet film, and described film non-woven fabrics is polypropylene film terylene non-woven fabric, and during lay, polypropylene face is as the outer surface of composite.
Square framed thickness described in step (1) is 9 ~ 15mm; In laid course, useless prepreg tape particle uniform spreading be placed on framed in, every millimeter of lay thickness useless prepreg tape particle used is 1.2 ~ 1.4kg/m
2, the lay thickness of useless prepreg tape particle makes the gross thickness of lay material than square framed thickness height 3mm.
In step (2), hot pressing pressure is 2 ~ 4MPa, and hot pressing temperature is 190 ~ 210 DEG C, and hot pressing time is 300 ~ 1000s; Exhaust number of times is 1 time, and evacuation time is matched moulds 60s final vacuum 5s; Pressure of colding pressing is 2 ~ 4MPa, and the time of colding pressing is 600 ~ 1200s; The light-high-strength sandwich composite board thickness made and square framed consistency of thickness used are 9 ~ 15mm.
Compared with prior art, the present invention has the following advantages:
1. general useless prepreg tape reclaims is all be ground into powder or less pellet to add in virgin material again and carry out extruding pelletization, the method not only cost recovery is high, and high performance useless prepreg tape is broken into the powder of low performance or pellet also not too desirable, the present invention combines reality and preliminary treatment is had the useless prepreg tape particle of high-mechanical property and the felt of lightweight, high mechanical prepreg tape combines and produces a kind of high-strength light sandwich composite board, make full use of the high-mechanical property of useless prepreg tape, useless prepreg tape is turned waste into wealth, improve the utilization rate of prepreg tape, save resource, reduce cost.
2. the present invention utilize useless prepreg tape to produce high-strength light sandwich composite board thickness at 9 ~ 15mm, density is at 1 ~ 1.2g/cm
3, bending strength is greater than 70MPa, and bending modulus is greater than 6GPa, can be applied in the fields such as building, traffic, have wide market prospects.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 is film nonwoven layer, and 2 is prepreg tape, and 3 is lightweight carpet veneer, and 4 is useless prepreg tape particle layer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
A kind of high-strength light sandwich composite board, comprise seven-layer structure, be followed successively by polypropylene film white site terylene non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fibre and glass fibre composite light felt, useless continuous glass fiber reinforced polypropylene prepreg tape particle, polypropylene fibre and glass fibre composite light felt, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene film white site terylene non-woven fabric from top to bottom.
Polypropylene film white site terylene non-woven fabric unit grammes per square metre is 140g/m
2, thickness is 0.2mm, and wherein polypropylene unit grammes per square metre is 70g/m
2, polypropylene film non-woven fabrics white site terylene non-woven fabric unit grammes per square metre used is 70g/m
2; In continuous glass fiber reinforced polypropylene prepreg tape, glass fiber quality content is 50%, and the thickness of prepreg tape is 0.25mm; The glass fibre composite light felt of polypropylene fibre and chopping adopts Chuzhou Ge Meite Geniuslite series sheet material, and the weight content of its glass fibre is 25%, and surface density is 1000g/m
2, thickness is 3mm; Useless continuous glass fiber reinforced polypropylene prepreg tape particle length is 2 ~ 80mm, and width is 2 ~ 20mm, and thickness is 0.2 ~ 0.3mm, and in useless prepreg tape particle, fiber quality content is 40% ~ 50%, and density is 1.1 ~ 1.3g/cm
3.
High-strength light sandwich composite board adopts following procedure of processing:
(1) laying
First by 1 layer of pet film lay in thick square framed of 9mm, lay 1 layer of film polypropylene ventricumbent polypropylene film white site terylene non-woven fabric successively thereon again, 2 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 ° arrangements, 1 layer polypropylene fiber and glass fibre composite light felt, the useless prepreg tape particle of the even lay of 5.52kg, 1 layer polypropylene fiber and glass fibre composite light felt, 2 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 ° arrangements, 1 layer of film polypropylene supine polypropylene film white site terylene non-woven fabric, finally square framed on lay 1 layer of pet film.
(2) pressing plate
After completing layer, framedly put vulcanizing press hot pressing 300s under 2MPa, 190 DEG C of conditions into by square; Wherein arrange 1 gas after matched moulds 60s, evacuation time 5s; After hot pressing framed enter cold press, namely the 600s that colds pressing under 2MPa pressure can be made into the thick high-strength light sandwich composite board of 9mm;
By embodiment 1 press high-strength light sandwich composite board to carry out performance test according to GB, the performance test results is in table 1.
Embodiment 2
A kind of high-strength light sandwich composite board, comprise seven-layer structure, be followed successively by polypropylene film white site terylene non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fibre and glass fibre composite light felt, useless continuous glass fiber reinforced polypropylene prepreg tape particle, polypropylene fibre and glass fibre composite light felt, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene film white site terylene non-woven fabric from top to bottom.
Polypropylene film white site terylene non-woven fabric unit grammes per square metre is 180g/m
2, thickness is 0.24mm, and wherein polypropylene unit grammes per square metre is 90g/m
2, polypropylene film non-woven fabrics white site terylene non-woven fabric unit grammes per square metre used is 90g/m
2; In continuous glass fiber reinforced polypropylene prepreg tape, glass fiber quality content is 60%, and the thickness of prepreg tape is 0.2mm; The glass fibre composite light felt of polypropylene fibre and chopping adopts Chuzhou Ge Meite Geniuslite series sheet material, and the weight content of its glass fibre is 65%, and surface density is 1600g/m
2, thickness is 5mm; Useless continuous glass fiber reinforced polypropylene prepreg tape particle length is 2 ~ 80mm, and width is 2 ~ 20mm, and thickness is 0.15 ~ 0.25mm, and in useless prepreg tape particle, fiber quality content is 40% ~ 50%, and density is 1.1 ~ 1.3g/cm
3.
High-strength light sandwich composite board adopts following procedure of processing:
(1) laying
First by 1 layer of pet film lay in thick square framed of 15mm, lay 1 layer of film polypropylene ventricumbent polypropylene film white site terylene non-woven fabric successively thereon again, 6 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 °/0 °/90 °/0 °/90 ° arrangements, 1 layer polypropylene fiber and glass fibre composite light felt, the useless prepreg tape particle of the even lay of 7.17kg, 1 layer polypropylene fiber and glass fibre composite light felt, 6 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 °/0 °/90 °/0 °/90 ° arrangements, 1 layer of film polypropylene supine polypropylene film white site terylene non-woven fabric, finally square framed on lay 1 layer of pet film.
(2) pressing plate
After completing layer, framedly put vulcanizing press hot pressing 1000s under 4MPa, 210 DEG C of conditions into by square; Wherein arrange 1 gas after matched moulds 60s, evacuation time 5s; After hot pressing framed enter cold press, namely the 1200s that colds pressing under 4MPa pressure can be made into the thick high-strength light sandwich composite board of 15mm;
By embodiment 2 press high-strength light sandwich composite board to carry out performance test according to GB, the performance test results is in table 1.
Embodiment 3
A kind of high-strength light sandwich composite board, comprise seven-layer structure, be followed successively by polypropylene film white site terylene non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fibre and glass fibre composite light felt, useless continuous glass fiber reinforced polypropylene prepreg tape particle, polypropylene fibre and glass fibre composite light felt, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene film white site terylene non-woven fabric from top to bottom.
Polypropylene film white site terylene non-woven fabric unit grammes per square metre is 160g/m
2, thickness is 0.22mm, and wherein polypropylene unit grammes per square metre is 80g/m
2, polypropylene film non-woven fabrics white site terylene non-woven fabric unit grammes per square metre used is 80g/m
2; In continuous glass fiber reinforced polypropylene prepreg tape, glass fiber quality content is 55%, and the thickness of prepreg tape is 0.22mm; The glass fibre composite light felt of polypropylene fibre and chopping adopts Chuzhou Ge Meite Geniuslite series sheet material, and the weight content of its glass fibre is 45%, and surface density is 1300g/m
2, thickness is 4mm continuous glass fiber reinforced polypropylene prepreg tape particle length of giving up is 2 ~ 80mm, and width is 2 ~ 20mm, and thickness is 0.15 ~ 0.27mm, and in useless prepreg tape particle, fiber quality content is 40% ~ 50%, and density is 1.1 ~ 1.3g/cm
3.
High-strength light sandwich composite board adopts following procedure of processing:
(1) laying
First by 1 layer of pet film lay in thick square framed of 12mm, lay 1 layer of film polypropylene ventricumbent polypropylene film white site terylene non-woven fabric successively thereon again, 4 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 °/0 °/90 ° arrangements, 1 layer polypropylene fiber and glass fibre composite light felt, the useless prepreg tape particle of the even lay of 6.24kg, 1 layer polypropylene fiber and glass fibre composite light felt, 4 layers of continuous glass fiber reinforced polypropylene prepreg tape in 0 °/90 °/0 °/90 °/arrangement, 1 layer of film polypropylene supine polypropylene film white site terylene non-woven fabric, finally square framed on lay 1 layer of pet film.
(2) pressing plate
After completing layer, framedly put vulcanizing press hot pressing 600s under 3MPa, 200 DEG C of conditions into by square; Wherein arrange 1 gas after matched moulds 60s, evacuation time 5s; After hot pressing framed enter cold press, namely the 900s that colds pressing under 3MPa pressure can be made into the thick high-strength light sandwich composite board of 12mm;
By embodiment 3 press high-strength light sandwich composite board to carry out performance test according to GB, the performance test results is in table 1.
The performance test results of table 1 embodiment 1 ~ 3
| Test sheet material | Thickness (mm) | Density (g/cm 3) | Bending strength (MPa) | Bending modulus (MPa) |
| Embodiment 1 | 9 | 1.01 | 72 | 6200 |
| Embodiment 2 | 15 | 1.02 | 78 | 6500 |
| Embodiment 3 | 12 | 1.05 | 75 | 6300 |
High-strength, the lightweight of felt, the fillibility of useless prepreg tape of prepreg tape combine by the high-strength light sandwich composite board suppressed as can be seen from Table 1.
Embodiment 4
A kind of light-high-strength sandwich composite board, this light-high-strength sandwich composite board is crimped formed by the film nonwoven layer of arranging successively from top to bottom, prepreg tape, lightweight carpet veneer, useless prepreg tape particle layer, lightweight carpet veneer, prepreg tape, film nonwoven layer, the two sides of described useless prepreg tape particle layer is connected with lightweight carpet veneer respectively, the outer surface of lightweight carpet veneer is connected with prepreg tape, and the outer surface of prepreg tape is connected with film nonwoven layer.
Film nonwoven layer is made up of 1 layer of film non-woven fabrics, and prepreg tape is made up of 2 layers of prepreg tape, lightweight carpet veneer is made up of 1 layer of lightweight felt.The film non-woven fabrics used is unit grammes per square metre 140g/m
2, the polypropylene film terylene non-woven fabric of thickness 0.2mm, film non-woven fabrics white site terylene non-woven fabric unit grammes per square metre used is 70g/m
2.Prepreg tape is continuous fiber reinforced thermoplastic resin prepreg tape, and in prepreg tape, fiber quality content is 50%, and the thickness of prepreg tape is 0.2mm, and the density of prepreg tape is 1.3g/cm
3; Continuous fiber is continuous glass fibre, and thermoplastic resin is polypropylene.Lightweight felt is the lightweight felt that the glass fibre of polypropylene fibre and chopping is composited, and thickness is 3mm, surface density 1000g/m
2, wherein the mass content of glass fibre is 25%.The waste material that useless prepreg tape particle produces when being and producing fiber-reinforced thermoplastic resin prepreg tape is pulverized and is formed, useless prepreg tape particle length is 2mm, and width is 2mm, and thickness is 0.2mm, in useless prepreg tape particle, fiber quality percentage composition is 40%%, and density is 1.1g/cm
3.
The method of above-mentioned light-high-strength sandwich composite board, comprises the following steps:
(1) laying: by 1 pull-up mold layer lay to square framed in, again square framed in lay 1 layer of film non-woven fabrics, 2 layers of prepreg tape, 1 layer of lightweight felt, useless prepreg tape particle, 1 layer of lightweight felt, 2 layers of prepreg tape, 1 layer of film non-woven fabrics successively from the bottom up, finally square framed on lay 1 pull-up mold layer, wherein, release layer is pet film, film non-woven fabrics is polypropylene film terylene non-woven fabric, during lay, polypropylene face is as the outer surface of composite, and the square framed thickness of use is 9mm; In laid course, useless prepreg tape particle uniform spreading be placed on framed in, every millimeter of lay thickness useless prepreg tape particle used is 1.2kg/m
2, the lay thickness of useless prepreg tape particle makes the gross thickness of lay material than square framed thickness height 3mm;
(2) pressing plate
After completing layer, square framed vulcanizing press of putting into is carried out hot pressing, and hot pressing pressure is 2MPa, and hot pressing temperature is 190 DEG C, and hot pressing time is 300s; Exhaust number of times is 1 time, and evacuation time is matched moulds 60s final vacuum 5s, and then enters cold press and cold pressing, and pressure of colding pressing is 2MPa, and the time of colding pressing is 600s; The light-high-strength sandwich composite board thickness made and square framed consistency of thickness used, namely can be made into light-high-strength sandwich composite board after having colded pressing.
Embodiment 5
A kind of light-high-strength sandwich composite board, it is characterized in that, this light-high-strength sandwich composite board is crimped formed by the film nonwoven layer of arranging successively from top to bottom, prepreg tape, lightweight carpet veneer, useless prepreg tape particle layer, lightweight carpet veneer, prepreg tape, film nonwoven layer, the two sides of described useless prepreg tape particle layer is connected with lightweight carpet veneer respectively, the outer surface of lightweight carpet veneer is connected with prepreg tape, and the outer surface of prepreg tape is connected with film nonwoven layer.
Film nonwoven layer is made up of 1 layer of film non-woven fabrics, and prepreg tape is made up of 6 layers of prepreg tape, lightweight carpet veneer is made up of 1 layer of lightweight felt.Film non-woven fabrics is unit grammes per square metre 180g/m
2, the polypropylene film terylene non-woven fabric of thickness 0.24mm, film non-woven fabrics white site terylene non-woven fabric unit grammes per square metre used is 90g/m
2.Prepreg tape is continuous fiber reinforced thermoplastic resin prepreg tape, and in prepreg tape, fiber quality content is 60%, and the thickness of prepreg tape is 0.25mm, and the density of prepreg tape is 1.5g/cm
3; Continuous fiber is continuous glass fibre, and thermoplastic resin is polypropylene.Lightweight felt is the lightweight felt that the glass fibre of polypropylene fibre and chopping is composited, and thickness is 5mm, surface density 1600g/m
2, wherein the mass content of glass fibre is 65%.The waste material that useless prepreg tape particle produces when being and producing fiber-reinforced thermoplastic resin prepreg tape is pulverized and is formed, and useless prepreg tape particle length is 80mm, width 20mm, thickness 0.25mm, and in useless prepreg tape particle, fiber quality percentage composition is 50%, density 1.3g/cm
3.
The method of above-mentioned light-high-strength sandwich composite board, comprises the following steps:
(1) laying: by 1 pull-up mold layer lay to square framed in, again square framed in lay 1 layer of film non-woven fabrics, 6 layers of prepreg tape, 1 layer of lightweight felt, useless prepreg tape particle, 1 layer of lightweight felt, 6 layers of prepreg tape, 1 layer of film non-woven fabrics successively from the bottom up, finally square framed on lay 1 pull-up mold layer, wherein, release layer is pet film, film non-woven fabrics is polypropylene film terylene non-woven fabric, during lay, polypropylene face is as the outer surface of composite, and square framed thickness is 15mm; In laid course, useless prepreg tape particle uniform spreading be placed on framed in, every millimeter of lay thickness useless prepreg tape particle used is 1.4kg/m
2, the lay thickness of useless prepreg tape particle makes the gross thickness of lay material than square framed thickness height 3mm;
(2) pressing plate
After completing layer, square framed vulcanizing press of putting into is carried out hot pressing, and hot pressing pressure is 4MPa, and hot pressing temperature is 210 DEG C, and hot pressing time is 1000s; Exhaust number of times is 1 time, and evacuation time is matched moulds 60s final vacuum 5s, and then enters cold press and cold pressing, and pressure of colding pressing is 4MPa, and the time of colding pressing is 1200s; The light-high-strength sandwich composite board thickness made and square framed consistency of thickness used, namely can be made into light-high-strength sandwich composite board after having colded pressing.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a light-high-strength sandwich composite board, it is characterized in that, this light-high-strength sandwich composite board is crimped formed by the film nonwoven layer of arranging successively from top to bottom, prepreg tape, lightweight carpet veneer, useless prepreg tape particle layer, lightweight carpet veneer, prepreg tape, film nonwoven layer, the two sides of described useless prepreg tape particle layer is connected with lightweight carpet veneer respectively, the outer surface of lightweight carpet veneer is connected with prepreg tape, and the outer surface of prepreg tape is connected with film nonwoven layer.
2. a kind of light-high-strength sandwich composite board according to claim 1, it is characterized in that, described film nonwoven layer is made up of 1 layer of film non-woven fabrics, and described prepreg tape is made up of 2 ~ 6 layers of prepreg tape, described lightweight carpet veneer is made up of 1 layer of lightweight felt.
3. a kind of light-high-strength sandwich composite board according to claim 2, is characterized in that, described film non-woven fabrics is unit grammes per square metre 140 ~ 180g/m
2, the polypropylene film terylene non-woven fabric of thickness 0.2 ~ 0.24mm; Preferably, in described polypropylene film terylene non-woven fabric, terylene non-woven fabric is grammes per square metre is 70 ~ 90g/m
2white site terylene non-woven fabric.
4. a kind of light-high-strength sandwich composite board according to claim 2, it is characterized in that, described prepreg tape is continuous fiber reinforced thermoplastic resin prepreg tape, and in prepreg tape, fiber quality content is 50% ~ 60%, and the thickness of prepreg tape is 0.2 ~ 0.25mm; Described continuous fiber is continuous glass fibre, and described thermoplastic resin is polypropylene.
5. a kind of light-high-strength sandwich composite board according to claim 2, is characterized in that, described lightweight felt is the lightweight felt that the glass fibre of polypropylene fibre and chopping is composited, and thickness is 3 ~ 5mm, surface density 1000-1600g/m
2, wherein the mass content of glass fibre is 25% ~ 65%.
6. a kind of light-high-strength sandwich composite board according to claim 1, it is characterized in that, described useless prepreg tape particle layer is made up of the prepreg tape particle that gives up, described useless prepreg tape particle length is 2 ~ 80mm, width is 2 ~ 20mm, thickness is 0.2 ~ 0.25mm, and in useless prepreg tape particle, fiber quality percentage composition is 40% ~ 50%, and density is 1.1 ~ 1.3g/cm
3.
7., as the preparation method of a kind of light-high-strength sandwich composite board as described in arbitrary in claim 1 ~ 6, it is characterized in that, comprise the following steps:
(1) laying: by 1 pull-up mold layer lay to square framed in, again square framed in lay 1 layer of film non-woven fabrics, 2 ~ 6 layers of prepreg tape, 1 layer of lightweight felt, useless prepreg tape particle, 1 layer of lightweight felt, 2 ~ 6 layers of prepreg tape, 1 layer of film non-woven fabrics successively from the bottom up, finally square framed on lay 1 pull-up mold layer;
(2) pressing plate
After completing layer, square framed vulcanizing press of putting into is carried out hot pressing, enters cold press after hot pressing again and cold pressing, after having colded pressing, obtain described light-high-strength sandwich composite board.
8. the preparation method of a kind of light-high-strength sandwich composite board according to claim 7, it is characterized in that, release layer described in step (1) is pet film, described film non-woven fabrics is polypropylene film terylene non-woven fabric, and during lay, polypropylene face is as the outer surface of composite.
9. the preparation method of a kind of light-high-strength sandwich composite board according to claim 7, is characterized in that, the square framed thickness described in step (1) is 9 ~ 15mm; In laid course, useless prepreg tape particle uniform spreading be placed on framed in, every millimeter of lay thickness useless prepreg tape particle used is 1.2 ~ 1.4kg/m
2, the lay thickness of useless prepreg tape particle makes the gross thickness of lay material than square framed thickness height 3mm.
10. the preparation method of a kind of light-high-strength sandwich composite board according to claim 7, is characterized in that, in step (2), hot pressing pressure is 2 ~ 4MPa, and hot pressing temperature is 190 ~ 210 DEG C, and hot pressing time is 300 ~ 1000s; Exhaust number of times is 1 time, and evacuation time is matched moulds 60s final vacuum 5s; Pressure of colding pressing is 2 ~ 4MPa, and the time of colding pressing is 600 ~ 1200s; The light-high-strength sandwich composite board thickness made and square framed consistency of thickness used are 9 ~ 15mm.
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| CN108237747A (en) * | 2016-12-26 | 2018-07-03 | 上海杰事杰新材料(集团)股份有限公司 | A kind of hard stab-resistant material and preparation method thereof |
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| CN104553169B (en) | 2018-02-27 |
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