CN103507123A - Wood interlayer thermoplastic composite material and preparing method thereof - Google Patents
Wood interlayer thermoplastic composite material and preparing method thereof Download PDFInfo
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- CN103507123A CN103507123A CN201210201989.3A CN201210201989A CN103507123A CN 103507123 A CN103507123 A CN 103507123A CN 201210201989 A CN201210201989 A CN 201210201989A CN 103507123 A CN103507123 A CN 103507123A
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Abstract
The invention relates to a wood interlayer thermoplastic composite material and a preparing method thereof. The composite material is composed of five layers of materials which are an upper panel, a macromolecular adhesive film, a core material, a macromolecular adhesive film and a lower panel in sequence from top to bottom. Glass fiber reinforcement polypropylene base prepreg tape is laid up according to 0 degree/90 degrees/0 degree, firstly pressed in a hot mode, then pressed in a cold mode through a pressure roller and a rolling device, and formed in a composite mode, so that the panel materials are obtained. The macromolecular adhesive films are arranged between the core material and the upper panel, and between the core material and the lower panel, hot-pressing and gluing are carried out at the temperature of 175-190 DEG C, at the beginning stage, air is exhausted for one time every two minutes, and the air is exhausted for three times to obtain the product. Compared with the prior art, the wood interlayer thermoplastic composite material is high in chemical strength, long in service life, waterproof, mothproof, good in wholesomeness, easy to clean and corrosion-resistant.
Description
Technical field
The present invention relates to a kind of wood and mould bonded composite, especially relate to a kind of wooden interlayer thermoplastic composite and preparation method thereof.
Background technology
Along with social fast development, city-building speed is also in fast development, and the demand to building template in building industry increases sharply thereupon.Current building template is mainly traditional Wood construction formwork and bamboo matter building template, and a small amount of plastic building template occurring.Along with the development of carrier, lorry base plate is also increasing the demand of timber simultaneously.
The more raw speed of timber is certain, and a large amount of consumption of timber is said to be the trend that does not meet epoch progress from the angle of environmental protection.And wherein the performance of Wood construction formwork is low, water proofing property and mildew-resistant row are poor, occur expansion lamination after water suction, reuse number of times few (5 times following).The mothproof performance of the wooden base plate waterproof of lorry is bad, and unrepairable after damage.These problems for current Wood construction formwork and the existence of wooden base plate, the invention provides a kind of wood and mould bonded composite, have the mothproof performance of certain waterproof, and mechanical property, damages the excellent properties such as rear recoverability preferably.
Summary of the invention
Object of the present invention be exactly in order to overcome the defect that above-mentioned prior art exists, provide that a kind of mechanical strength is high, long service life, waterproof, mothproof, wholesomeness good, easy to clean, corrosion-resistant, recoverable wooden interlayer thermoplastic composite and preparation method thereof.
Object of the present invention can be achieved through the following technical solutions: a kind of wooden interlayer thermoplastic composite, it is characterized in that, this composite is comprised of five layer materials, is followed successively by from top to bottom top panel, macromolecule felted-membrane, core, macromolecule felted-membrane and lower panel.
Described top panel and the material of lower panel are the behavior of polypropylene composites that glass fibre strengthens, and the weight percentage ranges of glass fibre is 40%-60%, and fibre fineness scope used is 150-9600Tex.
Described macromolecule felted-membrane is polypropylene-base macromolecule felted-membrane, and the one side of this macromolecule felted-membrane is polarity, and with core bonding, another side is nonpolar, with top panel or lower panel bonding.
Described core is wooden plywood, select in length and breadth to the glued board that laying makes by a certain percentage, the general wood fibre orientation number of plies is in the vertical more than the number of plies transversely, this and material are in use corresponding to the performance requirement of length direction higher than the performance of width, have therefore improved the utilization rate of material.
Described top panel or the thickness of lower panel are 1mm-10mm, and the thickness of core is 7-25mm.
A preparation method for wooden interlayer thermoplastic composite, is characterized in that, the method comprises the following steps:
(1) preparation of top panel and lower panel: glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to 0 °/90 °/0 °, the composite molding of colding pressing after first hot pressing under pressure roll and rolling device, wherein hot pressing temperature is 190-200 ℃, hot pressing pressure is 2.5-3MPa, hot pressing time is 10-15min, cold pressing pressure from the 1.5MPa 3MPa that edges up, and the time of colding pressing is 15-20min, makes panel material;
(2) core and top panel, below put into macromolecule felted-membrane between flaggy, at the temperature of 175 ℃-190 ℃, carry out thermo-compression bonding, incipient stage while, every exhaust in 2 minutes once, exhaust number of times is 3 times, and pressure is 2.5-3.5MPa, hot pressing time is 10-20min, hot pressing continues the 20min that colds pressing later, and the pressure of colding pressing is 1.5MPa-3MPa, obtains product.
The described glass fiber reinforced polypropylene base of step (1) prepreg tape makes by the following method: continuous glass fibre is evenly spread out by abundant at recombiner unit and polypropylene fusion resin-dipping after traction unit preheating to the continuous glass fibre single-oriented presoaked belts then making through flattening the effect of unit and rolling unit.
The advantage of the wooden interlayer thermoplastic composite that compared to existing technology, the present invention makes is:
(1) the present invention make based on wooden interlayer composite material have that mechanical strength is high, long service life, waterproof, easy to clean, corrosion-resistant, good weatherability, good, the recoverable advantage of nail-holding ability.
(2) the present invention adopts polypropylene-base macromolecule both sexes adhesive film to make the adhesion strength of panel and core material higher as the hot pressing complex technique of tack coat.
(3) coiled material that in the present invention, panel material adopts continuous glass fibre to strengthen, makes panel material have more excellent strength and modulus, makes thermoplastic sandwiched composite have higher cost performance.
(4) panel material in the present invention and core all can make the longitudinal strength of material higher than transverse strength by ply sequence according to using, and make the material of gained can obtain maximized use value.
(5) the wooden interlayer thermoplastic composite that the present invention makes, has stronger design, can be designed with the selection of material and be reached concrete impact of performance requirement by change structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of product of the present invention.
Wherein 1 is that top panel, 2 is that the first polymer bond layer, 3 is that core, 4 is that the second polymer bond layer, 5 is lower panel.
The specific embodiment
Embodiment 1
The behavior of polypropylene composites that panel material adopts continuous fiber to strengthen, core is wooden plywood's material, and thickness is 18mm, and wherein the percetage by weight of the glass fibre in panel material is about 50%, and plate thickness is 2mm.
The preparation of glass fiber reinforced thermoplastics composite upper and lower panel: by glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to the mechanical property requirements of concrete application according to 0 °/90 °/0 °, wherein the ratio of 2: 1 has met mechanical strength in building template length higher than the applicable cases of width, makes material have higher utilization rate.Then under certain hot pressing cold-press process condition, carry out composite molding, wherein hot pressing temperature is 180 ℃, and hot pressing pressure is 3MPa left and right, and hot pressing time is 10min, the pressure 3MPa that colds pressing, and the time of colding pressing is that 20min makes panel material.
Tack coat is polypropylene-base macromolecule felted-membrane, and the one side of this macromolecule felted-membrane is polarity, and another side is nonpolar.The polarity one side of macromolecule felted-membrane strengthens sheet material bonding with wooden core bonding, nonpolar one side with glass.Under certain mould condition, panel, macromolecule felted-membrane and core are entered to heat pressure adhesive.Hot pressing temperature is 185 ℃, and pressure is about 2.5MPa, and hot pressing time is 10min left and right, and hot pressing continues the 10min that colds pressing later, and the pressure of colding pressing is 2.5MPa, to reach desirable bond effect.The bending property of the wooden interlayer composite material of gained is in Table 1.
Embodiment 2
The behavior of polypropylene composites that panel material adopts continuous fiber to strengthen, core is wooden plywood's material, and thickness is 25mm, and wherein the percetage by weight of the glass fibre in panel material is about 55%, and plate thickness is 3mm.
The preparation of glass fiber reinforced thermoplastics composite upper and lower panel: by glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to the mechanical property requirements of concrete application according to 0 °/90 °/0 °, wherein the ratio of 2: 1 is to have met the mechanical strength in length in use, higher than the applicable cases of width, to make material have higher utilization rate.Then under certain hot pressing cold-press process condition, carry out composite molding, wherein hot pressing temperature is 180 ℃, and hot pressing pressure is 3MPa left and right, and hot pressing time is 10min, and the pressure of colding pressing is 3MPa, and the time of colding pressing is that 20min makes panel material.
Tack coat is polypropylene-base macromolecule felted-membrane, and the one side of this macromolecule felted-membrane is polarity, and another side is nonpolar.The polarity one side of macromolecule felted-membrane strengthens sheet material bonding with wooden core bonding, nonpolar one side with glass.Under certain mould condition, panel, macromolecule felted-membrane and core are entered to heat pressure adhesive.Hot pressing temperature is 185 ℃, and pressure is about 3MPa, and hot pressing time is 10min left and right, and hot pressing continues the 10min that colds pressing later, and the pressure of colding pressing is 3MPa, to reach desirable bond effect.The bending property of the wooden interlayer composite material of gained is in Table 1.
Table 1
| Thickness (mm) | Bending strength (MPa) | Bending modulus (GPa) | Maximum, force (N) | |
| Embodiment 1 | 18 | 53 | 5.9 | 1180 |
| Embodiment 2 | 25 | 108 | 6.7 | 2500 |
Embodiment 3
A preparation method for wooden interlayer thermoplastic composite, is characterized in that, the method comprises the following steps:
(1) continuous glass fibre is evenly spread out by abundant at recombiner unit and polypropylene fusion resin-dipping after traction unit preheating, then the continuous glass fibre single-oriented presoaked belts making through flattening the effect of unit and rolling unit, in this prepreg tape, the weight percentage ranges of glass fibre is 40%, and fibre fineness scope used is 150Tex.
(2) preparation of top panel and lower panel: glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to 0 °/90 °/0 °, the composite molding of colding pressing after first hot pressing under pressure roll and rolling device, wherein hot pressing temperature is 190 ℃, hot pressing pressure is 2.5MPa, hot pressing time is 15min, cold pressing pressure from the 1.5MPa 3MPa that edges up, and the time of colding pressing is 15min, makes panel material;
(3) core is wooden plywood, select in length and breadth to the glued board that laying makes by a certain percentage, the general wood fibre orientation number of plies is in the vertical more than the number of plies transversely, this and material are in use corresponding to the performance requirement of length direction higher than the performance of width, have therefore improved the utilization rate of material;
(4) at core and top panel, between flaggy, put into macromolecule felted-membrane below, macromolecule felted-membrane is polypropylene-base macromolecule felted-membrane, the one side of this macromolecule felted-membrane is polarity, bond with core, another side is nonpolar, with top panel or lower panel bonding, at the temperature of 175 ℃, carry out thermo-compression bonding, incipient stage while, every exhaust in 2 minutes once, exhaust number of times is 3 times, pressure is 3MPa, hot pressing time is 20min, hot pressing continues the 20min that colds pressing later, the pressure of colding pressing is 1.5MPa, obtain product, as described in Figure 1, products obtained therefrom is followed successively by top panel 1 from top to bottom, the first macromolecule felted-membrane 2, core 3, the second macromolecule felted-membrane 4, lower panel 5, the thickness of this product top panel is 1mm, the thickness of lower panel is 1mm, the thickness of core is 7mm.
Embodiment 4
A preparation method for wooden interlayer thermoplastic composite, is characterized in that, the method comprises the following steps:
(1) continuous glass fibre is evenly spread out by abundant at recombiner unit and polypropylene fusion resin-dipping after traction unit preheating, then the continuous glass fibre single-oriented presoaked belts making through flattening the effect of unit and rolling unit, in this prepreg tape, the weight percentage ranges of glass fibre is 60%, and fibre fineness scope used is 9600Tex.
(2) preparation of top panel and lower panel: glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to 0 °/90 °/0 °, the composite molding of colding pressing after first hot pressing under pressure roll and rolling device, wherein hot pressing temperature is 200 ℃, hot pressing pressure is 3MPa, hot pressing time is 10min, cold pressing pressure from the 1.5MPa 3MPa that edges up, and the time of colding pressing is 20min, makes panel material;
(3) core is wooden plywood, select in length and breadth to the glued board that laying makes by a certain percentage, the general wood fibre orientation number of plies is in the vertical more than the number of plies transversely, this and material are in use corresponding to the performance requirement of length direction higher than the performance of width, have therefore improved the utilization rate of material;
(4) at core and top panel, between flaggy, put into macromolecule felted-membrane below, macromolecule felted-membrane is polypropylene-base macromolecule felted-membrane, the one side of this macromolecule felted-membrane is polarity, bond with core, another side is nonpolar, with top panel or lower panel bonding, at the temperature of 190 ℃, carry out thermo-compression bonding, incipient stage while, every exhaust in 2 minutes once, exhaust number of times is 3 times, pressure is 3.5MPa, hot pressing time is 10min, hot pressing continues the 20min that colds pressing later, the pressure of colding pressing is 3MPa, obtain product, the thickness of this product top panel is 10mm, the thickness of lower panel is 10mm, the thickness of core is 25mm.
Claims (7)
1. a wooden interlayer thermoplastic composite, is characterized in that, this composite is comprised of five layer materials, is followed successively by from top to bottom top panel, macromolecule felted-membrane, core, macromolecule felted-membrane and lower panel.
2. a kind of wooden interlayer thermoplastic composite according to claim 1, it is characterized in that, described top panel and the material of lower panel are the behavior of polypropylene composites that glass fibre strengthens, the weight percentage ranges of glass fibre is 40%-60%, and fibre fineness scope used is 150-9600Tex.
3. a kind of wooden interlayer thermoplastic composite according to claim 1, is characterized in that, described macromolecule felted-membrane is polypropylene-base macromolecule felted-membrane, the one side of this macromolecule felted-membrane is polarity, with core bonding, another side is nonpolar, with top panel or lower panel bonding.
4. a kind of wooden interlayer thermoplastic composite according to claim 1, is characterized in that, described core is wooden plywood.
5. a kind of wooden interlayer thermoplastic composite according to claim 1, is characterized in that, described top panel or the thickness of lower panel are 1mm-10mm, and the thickness of core is 7-25mm.
6. a preparation method for wooden interlayer thermoplastic composite as claimed in claim 1, is characterized in that, the method comprises the following steps:
(1) preparation of top panel and lower panel: glass fiber reinforced polypropylene base prepreg tape is carried out to laying according to 0 °/90 °/0 °, the composite molding of colding pressing after first hot pressing under pressure roll and rolling device, wherein hot pressing temperature is 190-200 ℃, hot pressing pressure is 2.5-3MPa, hot pressing time is 10-15min, cold pressing pressure from the 1.5MPa 3MPa that edges up, and the time of colding pressing is 15-20min, makes panel material;
(2) core and top panel, below put into macromolecule felted-membrane between flaggy, at the temperature of 175 ℃-190 ℃, carry out thermo-compression bonding, incipient stage while, every exhaust in 2 minutes once, exhaust number of times is 3 times, and pressure is 2.5-3.5MPa, hot pressing time is 10-20min, hot pressing continues the 20min that colds pressing later, and the pressure of colding pressing is 1.5MPa-3MPa, obtains product.
7. the manufacture method of a kind of wooden interlayer thermoplastic composite according to claim 1, it is characterized in that, the described glass fiber reinforced polypropylene base of step (1) prepreg tape makes by the following method: continuous glass fibre is evenly spread out by abundant at recombiner unit and polypropylene fusion resin-dipping after traction unit preheating to the continuous glass fibre single-oriented presoaked belts then making through flattening the effect of unit and rolling unit.
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| CN107521186A (en) * | 2017-09-18 | 2017-12-29 | 张家港市圣达汽车内饰材料有限公司 | A kind of special process method of GMT thermoplastic composites polyester fiber board |
| CN109953549A (en) * | 2017-12-14 | 2019-07-02 | 广州金发碳纤维新材料发展有限公司 | A kind of subregion thermoplastic composite bed board and its manufacturing method |
| CN112196176A (en) * | 2020-09-27 | 2021-01-08 | 衡阳凌云特种材料有限公司 | Multilayer composite corrosion-resistant heat-insulating material and preparation method thereof |
| CN114919266A (en) * | 2022-05-26 | 2022-08-19 | 浙江清华长三角军民协同创新研究院(嘉兴) | Method for manufacturing composite material sandwich structure of asymmetric panel |
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Denomination of invention: Wood interlayer thermoplastic composite material and preparing method thereof Effective date of registration: 20191202 Granted publication date: 20170125 Pledgee: Chuzhou economic and Technological Development Corporation Pledgor: Shanghai Jieshijie New Materials (Group) Co., Ltd. Registration number: Y2019980000815 |