Detailed description of the invention
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides a kind of good mechanical property, the aramid fiber-glass-fibre composite tab material of surperficial relative smooth.This aramid fiber-glass-fibre composite tab material comprises glass felt matrix and is combined in the Composite aramid fiber layer of described glass felt matrix surface, and it is 1:(0.2-3 that described Composite aramid fiber layer comprises the aramid fiber of mixing, the mass ratio of Fanglun slurry cake mutually).Like this, this aramid fiber-glass-fibre composite tab material is direct and glass felt compound by the composite layer of aramid fiber, Fanglun slurry cake, due to the feature of self of glass felt, this aramid fiber, Fanglun slurry cake can run through glass felt, aramid fiber, Fanglun slurry cake, glass fibre is made mutually to bond and run through, Composite aramid fiber layer is made to be combined firmly with glass felt matrix, effectively avoid both peel separation phenomenons to occur, give the mechanical performances such as the TENSILE STRENGTH of this aramid fiber-glass-fibre composite tab material excellence and bending strength simultaneously.In addition, this Composite aramid fiber layer is combined in glass felt matrix surface, makes this aramid fiber-glass-fibre composite tab material surface relative smooth, overcomes the defect of the more lousiness of glass felt surface distributed.
In addition, in above-mentioned aramid fiber-glass-fibre composite tab material, the thickness of Composite aramid fiber layer can affect the performance such as TENSILE STRENGTH and bending strength of this aramid fiber-glass-fibre composite tab material, and therefore, in certain embodiments, the thickness of this Composite aramid fiber layer is 0.1-1mm.By the control of the thickness of Composite aramid fiber layer at thickness range, the performances such as the TENSILE STRENGTH of this multiple aramid fiber-glass-fibre composite tab material and bending strength can be made to improve further, make Composite aramid fiber layer be combined more firm with glass felt matrix simultaneously.
Wherein, in one embodiment, above-mentioned aramid fiber selects one or more the mixture in Fanglun 1313, Fanglun 1414, heterocyclic aromatic polyamide fibre.Wherein, this aramid fiber can select the aramid fiber short fibre of 6-8mm.In another embodiment, this Fanglun slurry cake selects one or more the mixture in Fanglun 1313 pulp, Fanglun 1414's pulp, heterocyclic aromatic polyamide fibre pulp.Certainly, in another embodiment, this aramid fiber selects one or more the mixture in Fanglun 1313, Fanglun 1414, heterocyclic aromatic polyamide fibre; Meanwhile, this Fanglun slurry cake selects one or more the mixture in Fanglun 1313 pulp, Fanglun 1414's pulp, heterocyclic aromatic polyamide fibre pulp.Wherein, heterocyclic aromatic polyamide fibre can select aramid fiber III and/or aramid fiber IV.
On the embodiment basis of material selected by above-mentioned aramid fiber, in one embodiment, the glass felt matrix in above-mentioned aramid fiber-glass-fibre composite tab material selects glass mat.
By selecting aramid fiber material and glass felt, the bond strength between Composite aramid fiber layer and glass felt matrix can be improved further, improve further simultaneously aramid fiber-glass-fibre composite tab material as the mechanical strength such as TENSILE STRENGTH and bending strength.
From the above, aramid fiber-glass-fibre composite tab material of providing of above-described embodiment as the mechanical strength such as TENSILE STRENGTH, bending strength and the bond strength between Composite aramid fiber layer and glass felt matrix high.By the thickness to Composite aramid fiber layer, and aramid fiber, Fanglun slurry cake content regulable control, the related mechanical properties of aramid fiber-glass-fibre composite tab material can be improved further.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of above-mentioned aramid fiber-glass-fibre composite tab material.The method comprises the steps:
S01. preparation is containing the aramid fiber slurry of aramid fiber and Fanglun slurry cake: by aramid fiber slurry and Fanglun slurry cake slurry and dispersant, formation aramid fiber slurry;
S02. utilize aramid fiber slurry to prepare aramid fiber-glass fibre compound blank paper: the aramid fiber slurry prepared in step S01 is formed a Composite aramid fiber coating on glass felt, obtain aramid fiber-glass fibre compound blank paper through pressure rolling, oven dry and rolling process;
S03. aramid fiber-glass fibre compound blank paper carries out hot-forming: the aramid fiber prepared by step S02-glass fibre compound blank paper extrusion forming at 220-300 DEG C.
Particularly, in above-mentioned steps S01, aramid fiber slurry can be prepared as follows: after aramid fiber is made into dispersion liquid, makes aramid fiber slurry through high speed dispersion.Wherein, this aramid fiber can select one or more the mixture in Fanglun 1313, Fanglun 1414, heterocyclic aromatic polyamide fibre.Wherein, aramid fiber can be the long aramid fiber short fibre for 6-8mm.
Fanglun slurry cake slurry can be prepared as follows: by Fanglun slurry cake by milled processed, will be prepared into Fanglun slurry cake slurry.Wherein, Fanglun slurry cake can select one or more the mixture in Fanglun 1313 pulp, Fanglun 1414's pulp, heterocyclic aromatic polyamide fibre pulp.In one embodiment, after this Fanglun slurry cake milled processed, the beating degree of Fanglun slurry cake is made to reach 60-75 °.This milled processed can adopt the instruments such as disc mill, and the number of times of grinding can be repeatedly, as 1-3 time, until the beating degree of Fanglun slurry cake reaches 60-75 °.
In addition, in the process for preparation of above-mentioned aramid fiber slurry, Fanglun slurry cake slurry, its solvent can adopt water.Certainly also as required, other solvents may be adopted.As long as its aramid fiber, Fanglun slurry cake are mixed with the solvent of slurry all in embodiment of the present invention scope of disclosure.
In one embodiment, the aramid fiber slurry concentration that aramid fiber slurry and Fanglun slurry cake slurry and dispersant are formed can be controlled by the concentration of aramid fiber slurry and Fanglun slurry cake slurry, as in one embodiment, the mass concentration of this aramid fiber slurry can control at 1.5%-2%, concrete as 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0% etc.In another embodiment, the mass concentration of this Fanglun slurry cake slurry can control at 1%-1.5%, concrete as 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5% etc.
By controlling the addition of above-mentioned aramid fiber slurry and Fanglun slurry cake slurry, the concentration of final aramid fiber slurry can be realized.In final aramid fiber slurry, the mass ratio of aramid fiber, Fanglun slurry cake controls at 1:(0.2-3).The aramid fiber of this mass ratio, Fanglun slurry cake slurry, the concentration of aramid fiber slurry can be controlled the concentration being suitable for coating process in the best on the one hand, to improve the quality of coating, and aramid fiber, Fanglun slurry cake and glass felt matrix can be made to interpenetrate, the physical property of composite sheet can be improved on the other hand.
In the process of preparation aramid fiber slurry, in order to make aramid fiber and Fanglun slurry cake can be dispersed, be also added with dispersant, in one embodiment, the addition of this dispersant can control at 0.001-0.1%.Wherein, this dispersant can select polyethylene glycol oxide, neopelex, cetyl ammonium bromide etc.
In above-mentioned steps S02, in one embodiment, by the method that described aramid fiber slurry forms a Composite aramid fiber coating on glass felt be: utilize paper machine that described aramid fiber slurry is coated in described glass felt on the surface, to form a Composite aramid fiber coating on the surface at described glass felt.Wherein, in one embodiment, the amount of the aramid fiber coating that this glass felt is formed on the surface meets: in final finished, the thickness of described Composite aramid fiber layer is 0.1-1mm.By controlling aramid fiber slurry at glass felt coated weight on the surface, to realize the amount controlling Composite aramid fiber layer in final finished aramid fiber-glass-fibre composite tab material, thus make the raising of aramid fiber-corresponding mechanical performance of glass-fibre composite tab material and sound construction performance.
Pressure rolling in above-mentioned steps S02, rolling process can adopt conventional pressure rolling, the process of rolling treatment process.Fully run through infiltration in order to what make aramid fiber slurry and glass felt, in one embodiment, this drying and processing comprises a baking and two and dries in the process of process, and wherein, a temperature of drying process controls at 60-80 DEG C, and two temperature of drying process control at 80-100 DEG C.In a further embodiment, dried the time controling of process by a baking and two, solvent such as the water content in aramid fiber-glass fibre compound blank paper is controlled at 90-98 °.
In above-mentioned steps S03, before extrusion forming process is carried out to aramid fiber-glass fibre compound blank paper, also comprise unreel, the step such as guide roller, the pre-heat treatment, the unreeling of this early stage, the step such as guide roller, the pre-heat treatment all can according to the process of this area routine.
Aramid fiber-glass fibre compound blank paper is in extrusion forming processing procedure, through pressurization hot rolling, formed and soften with the aramid fiber in the aramid layers on glass felt surface and Fanglun slurry cake and melt, make between aramid fiber, aramid fiber, between Fanglun slurry cake and glass fibre, and mutually bond between glass fibre and run through, realize the interaction between three, finally realize the excellent corresponding mechanical performance of aramid fiber-glass-fibre composite tab material and firm specific object.Therefore, in one embodiment, the Stress control that aramid fiber-glass fibre compound blank paper pressurizes at 220-300 DEG C is at 1MPa-50MPa.In certain embodiments, the temperature of this extrusion forming can be 230 ± 5 DEG C, 250 ± 5 DEG C, 280 ± 5 DEG C, 290 ± 5 DEG C etc.
In the nature of things, step S03, after extrusion forming, also comprises chill roll cooling, the steps such as trimming, shaping and rolling process.
The mixed slurry of aramid fiber and Fanglun slurry cake is coated in glass felt on the surface by above-mentioned aramid fiber-glass-fibre composite tab material, preparation method, along with aramid fiber and pulp are compounded on glass mat uniformly, aramid fiber can run through glass mat, when extrusion forming along with the softening of aramid fiber and thawing, make between aramid fiber, aramid fiber, between Fanglun slurry cake and glass fibre, and mutually bond between glass fibre and run through, aramid fiber and glass fibre compound tense is avoided to need to add other binding agents, also simplify manufacturing technique, significantly reduce its production cost, also properties of product are made to stablize, qualification rate is high.And make the mechanical performances such as the TENSILE STRENGTH of final finished and bending strength and firm performance high, its surperficial relative smooth.
Now for concrete aramid fiber-glass-fibre composite tab material and preparation method thereof, the present invention is further elaborated.
Embodiment 1
A kind of aramid fiber-glass-fibre composite tab material and preparation method thereof.This aramid fiber-glass-fibre composite tab material, preparation method step is as follows:
S11. long 1313 aramid fiber short fibres for 6mm are made into the dispersion liquid of 1.5%, high speed dispersion makes 1313 aramid fiber slurries;
Be the dispersion liquid that 1313 Fanglun slurry cakes of 45 ° are made into 1.5% by original beating degree, after disc mill mill 2 times, beating degree reaches 65 °, is prepared into 1313 Fanglun slurry cake slurries;
Aramid fiber slurry is deployed into by adding dispersion liquid after described 1313 aramid fiber slurries and described 1313 Fanglun slurry cake slurry mixing.Wherein, in aramid fiber slurry, the mass ratio of 1313 aramid fibers and 1313 Fanglun slurry cakes is 1:0.2; The addition of dispersant is 0.001%, and dispersant selects polyethylene glycol oxide;
S12. the aramid fiber slurry prepared by step S11 is by glass mat, and after filtration, pressure rolling, dries, two to dry and rolling can obtain aramid fiber-glass fibre blank paper.One dries temperature controls at 65 DEG C, and two dry temperature controls at 95 DEG C, and the water content of blank paper controls at 96 °;
S13. by aramid fiber blank paper by unreeling, guide roller, preheating, pressurization hot rolling, cooling, trimming, shaping and rolling can obtain aramid fiber-glass-fibre composite tab material.Wherein, in pressurization hot rolling processing procedure, temperature is 280 DEG C, and hot rolling speed is 15 ms/min, and hot rolling pressure is 20MPa; The thickness of the Composite aramid fiber layer that aramid fiber slurry is formed is 0.3mm.
The aramid fiber prepared by the present embodiment 1-glass-fibre composite tab material carries out TENSILE STRENGTH and bending strength test according to respective standard.Test result is: the TENSILE STRENGTH of this composite sheet is 250MPa, and bending strength is 340MPa.And surface is without lousiness, the excessive thickness of section, fiber combines closely, and without obvious segregation phenomenon, aramid layers and glassy layer can not be peeled off.
Embodiment 2
A kind of aramid fiber-glass-fibre composite tab material and preparation method thereof.This aramid fiber-glass-fibre composite tab material, preparation method step is as follows:
S21. long 1414 aramid fiber short fibres for 6mm are made into the dispersion liquid of 1.5%, high speed dispersion makes 1414 aramid fiber slurries;
Be the dispersion liquid that 1414 Fanglun slurry cakes of 45 ° are made into 1.5% by original beating degree, after disc mill mill 2 times, beating degree reaches 65 °, is prepared into 1414 Fanglun slurry cake slurries;
Aramid fiber slurry is deployed into by adding dispersion liquid after described 1414 aramid fiber slurries and described 1414 Fanglun slurry cake slurry mixing.Wherein, in aramid fiber slurry, the mass ratio of 1414 aramid fibers and 1414 Fanglun slurry cakes is 1:3; The addition of dispersant is 0.01%, and dispersant selects neopelex;
S22. the aramid fiber slurry prepared by step S21 is by glass mat, and after filtration, pressure rolling, dries, two to dry and rolling can obtain aramid fiber-glass fibre blank paper.One dries temperature controls at 65 DEG C, and two dry temperature controls at 95 DEG C, and the water content of blank paper controls at 96 °;
S13. by aramid fiber blank paper by unreeling, guide roller, preheating, pressurization hot rolling, cooling, trimming, shaping and rolling can obtain aramid fiber-glass-fibre composite tab material.Wherein, in pressurization hot rolling processing procedure, temperature is 280 DEG C, and hot rolling speed is 15 ms/min, and hot rolling pressure is 50MPa; The thickness of the Composite aramid fiber layer that aramid fiber slurry is formed is 0.1mm.Or the weight ratio of this Composite aramid fiber layer and glass felt matrix is how many.
The aramid fiber prepared by the present embodiment 2-glass-fibre composite tab material carries out TENSILE STRENGTH and bending strength test according to respective standard.Test result is: the TENSILE STRENGTH of this composite sheet is 220MPa, and bending strength is 280MPa.And surface is without lousiness, the excessive thickness of section, fiber combines closely, and without obvious segregation phenomenon, aramid layers and glassy layer can not be peeled off.
Embodiment 3
A kind of aramid fiber-glass-fibre composite tab material and preparation method thereof.This aramid fiber-glass-fibre composite tab material, preparation method step is as follows:
S31. long 1313 aramid fiber short fibres for 6mm are made into the dispersion liquid of 1.5%, high speed dispersion makes 1414 aramid fiber slurries;
Be the dispersion liquid that 1313 Fanglun slurry cakes of 45 ° are made into 1.5% by original beating degree, after disc mill mill 2 times, beating degree reaches 65 °, is prepared into 1313 Fanglun slurry cake slurries;
Aramid fiber slurry is deployed into by adding dispersion liquid after described 1313 aramid fiber slurries and described 1313 Fanglun slurry cake slurry mixing.Wherein, in aramid fiber slurry, the mass ratio of 1313 aramid fibers and 1313 Fanglun slurry cakes is 1:1; The addition of dispersant is 0.1%, and dispersant selects cetyl ammonium bromide;
S32. the aramid fiber slurry prepared by step S31 is by glass mat, and after filtration, pressure rolling, dries, two to dry and rolling can obtain aramid fiber-glass fibre blank paper.One dries temperature controls at 65 DEG C, and two dry temperature controls at 95 DEG C, and the water content of blank paper controls at 96 °;
The aramid fiber prepared by the present embodiment 3-glass-fibre composite tab material carries out TENSILE STRENGTH and bending strength test according to respective standard.Test result is: the TENSILE STRENGTH of this composite sheet is 140MPa, and bending strength is 230MPa.And there is obvious glass lousiness on surface, the excessive layer of section is very thin, has obvious interface between two kinds of fibers, and aramid layers and glassy layer can be peeled off.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.