CN103952947B - A kind of aramid paper and preparation method thereof - Google Patents
A kind of aramid paper and preparation method thereof Download PDFInfo
- Publication number
- CN103952947B CN103952947B CN201410166497.4A CN201410166497A CN103952947B CN 103952947 B CN103952947 B CN 103952947B CN 201410166497 A CN201410166497 A CN 201410166497A CN 103952947 B CN103952947 B CN 103952947B
- Authority
- CN
- China
- Prior art keywords
- layer
- aramid
- paper
- slurry cake
- aramid paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of aramid paper, has more than two layers structures, and wherein ground floor is above other each layers；Per layer independently includes aramid short fiber and Fanglun slurry cake, and in ground floor, the content of Fanglun slurry cake is higher than other each layers.The present invention also provides the preparation method of the aramid paper, and its application in paper honeycomb sandwich material, heat-barrier material, fire proofing, electronic material, friction material, TRANSFORMER INSULATING MATERIAL is prepared.The present invention also provides the paper honeycomb sandwich material that the preparation method and its preparation of paper honeycomb sandwich material are prepared using the aramid paper.Aramid paper of the present invention, on the premise of page mechanical property is ensured can realize suitably impregnating in paper honeycomb sandwich material preparation process SMIS bar glue, so as to ensure that paper honeycomb material has higher mechanical performance.
Description
Technical field
The invention belongs to field of papermaking, and in particular to a kind of aramid paper and preparation method thereof.
Background technology
Sandwich structure composite material is a kind of typical high specific strength, the structural design scheme of high specific stiffness, and it is by panel
High intensity and high-moduluss combine with the low-density and high rigidity of sandwich, have extremely in the fields such as Aero-Space
Important using value.The core of sandwich structure composite material mainly has comb core and synthetic foam core.Cellular sandwich material
Because gaining the name just as natural cellular, it is cementing rear obtained by reinforcing material molding to material.Cellular sandwich material include paper honeycomb,
Cloth honeycomb, metal beehive etc..Wherein, aramid paper cellular sandwich material is, with aramid paper as main raw material(s), to imitate natural Nidus Vespae
Hexagonal honeycomb structure, according to a kind of non-gold similar to cellular nest of the structure and profile produced by bionics principle
Category composite.
Aramid paper, with aramid fiber (i.e. the common name of " fully aromatic polyamide fiber ") as raw material, many Jing wet methods manufacture paper with pulp and
Into.Chemically composition divides, and aramid fiber is divided into meta-aramid fibers and para-aramid fiber；From form point, aramid fiber bag
Include aramid fiber short fibre and Fanglun slurry cake.Aramid fiber short fibre cuts into Len req by aramid filament, and bone is played in page
Frame is acted on.And Fanglun slurry cake plays a part of to increase fiber combining in page.The manufacturing paper with pulp property of chopped strand and Fanglun slurry cake
Energy, paper strength performance difference are very big.The species and interfibrous weight proportion of optimization fiber, is the pass for preparing qualified aramid paper
One of key, needs to do substantial amounts of work.
The preparation of aramid paper cellular sandwich material is divided into gluing, overlapping, compacting, cutting, stretching, sizing, impregnation and consolidates
Several key steps such as change.The preparation technology flow process of the aramid paper cellular sandwich material of country's main flow is as shown in Figure 1 at present.Its
In, adhesive is used in two preparation units of gluing and impregnation.But the adhesive used at two is equal in characteristic and functionally
It is very different.In the adhesive in gluing stage, " core bar glue " is commonly referred to as, the page surface of aramid paper is applied to, in paper
Play a part of splicing between page.Therefore, inside core bar glue can not too ooze page, otherwise stay in the glue amount mistake of page surface
Less, cementation is on the weak side；Core bar glue can not penetrate into the other one side of page, and the otherwise splicing of cellular sandwich will occur wrong
Disorderly.And in the adhesive in impregnation stage, be commonly referred to as " dipping glue " and mainly play a part of honeycomb sizing.How in gluing work
Section prevent core bar glue too ooze inside page be prepare aramid paper cellular sandwich materials process in the problem that must solve.At present
Often through characteristic such as viscosity etc. of adjustment core bar glue alleviating this contradiction in paper honeycomb manufacturing industry, but the performance such as viscosity
Adjustment often has influence on other performances of adhesive, so as to the cellular preparation of paper feeding and performance bring detrimental effect.
The content of the invention
For the problems referred to above, it is an object of the present invention to provide a kind of new aramid paper, which has multiple structure, energy
It is enough to realize that core bar glue suitably impregnates on the premise of paper strength is ensured, so as to meet wanting for cellular sandwich material preparation process
Ask, prepare high performance cellular sandwich material.
In order to realize foregoing invention purpose, following technical scheme is present invention employs：
A kind of aramid paper, has more than two layers structures, and wherein ground floor is above other each layers；Per layer independently includes virtue
Synthetic fibre chopped strand and Fanglun slurry cake, in ground floor, the content of Fanglun slurry cake is higher than other each layers.
Preferably, the aramid paper has three-decker, and wherein above the second layer and third layer, the second layer exists ground floor
The centre of ground floor and third layer.
It is furthermore preferred that the above-mentioned aramid paper with three-decker, on the basis of total absolute dry mass of paper, the hundred of three layers of quality
Point ratio is：
Ground floor:The second layer:Third layer=3～30%:35～48.5%:35～48.5%；
Most preferably, the above-mentioned aramid paper with three-decker, on the basis of total absolute dry mass of aramid paper, three layers of quality
Percentage ratio be：
Ground floor:The second layer:Third layer=5～25%：37.5～47.5%：37.5～47.5%.
Preferably, above-mentioned aramid paper, on the basis of the total absolute dry mass of the ground floor fiber, the quality percentage of Fanglun slurry cake
It is 40～55%, more preferably 45～50% than content.
Preferably, above-mentioned aramid paper, respectively on the basis of the total absolute dry mass of other each layer fibers, each layer independently, aramid fiber
The mass percentage content of pulp is 20～35%, more preferably 25～30%.
It is furthermore preferred that above-mentioned aramid paper, respectively on the basis of the total oven dry weight of other each layer fibers, the quality of Fanglun slurry cake
Degree is 20～35%, more preferably 25～30%；And the mass percentage content of the Fanglun slurry cake of each layer is identical.
Preferably, the aramid fiber short fibre is selected between PPTA chopped strand and poly- isophthaloyl
One or two in phenylenediamine chopped strand.
Preferably, the length of the aramid fiber short fibre is 4～20mm, more preferably 6～12mm.
Preferably, the Fanglun slurry cake is selected from PPTA fibrillation dissolving pulp, poly- paraphenylene terephthalamide couple
One or more in phenylenediamine precipitating pulp and poly(isophthaloyl metaphenylene diamine) precipitating pulp.
Preferably, the weight average length of the Fanglun slurry cake is 0.5～2mm, and beating degree is 30～70 ° of SR.
It is further preferred that in the ground floor, the weight average length of the Fanglun slurry cake is 0.8～1.3mm, and beating degree is
50～60 ° of SR.
It is also preferred that in described other each layers, the weight average length of the Fanglun slurry cake is 1.1～1.5mm, and beating degree is 40
～45 ° of SR.
Further object is that providing a kind of preparation method of aramid paper.The aramid paper, has more than two layers
Structure, preferably three-decker, wherein ground floor are above other each layers；Per layer independently includes aramid short fiber and virtue
Synthetic fibre pulp, in ground floor, the content of Fanglun slurry cake is higher than other each layers；The preparation method includes per layer independently for starching, beating
Slurry；Slurry enters the paper machine for having multiple independent flow passages, is laminated shaping of manufacturing paper with pulp simultaneously in formation zone；It is dehydrated, is dried；Hot pressing.
Preferably, the aramid paper, on the basis of the total absolute dry mass of the ground floor fiber, the quality percentage of Fanglun slurry cake
It is 40～55%, more preferably 45～50% than content；The weight average length of the Fanglun slurry cake is 0.8～1.3mm, and beating degree is
50～60 ° of SR.
It is also preferred that the aramid paper, respectively on the basis of the total over dry matter weight of other each layer fibers, each layer independently,
The mass percentage content of Fanglun slurry cake is 20～35%, more preferably 25～30%；The weight average length of the Fanglun slurry cake is
1.1～1.5mm, beating degree are 40～45 ° of SR；It is furthermore preferred that the content of Fanglun slurry cake is identical in each layer.
Preferably, the aramid fiber short fibre is selected between PPTA chopped strand and poly- isophthaloyl
One or two in phenylenediamine chopped strand.
Preferably, the Fanglun slurry cake is selected from PPTA fibrillation dissolving pulp, poly- paraphenylene terephthalamide couple
One or more in phenylenediamine precipitating pulp and poly(isophthaloyl metaphenylene diamine) precipitating pulp.
Preferably, in the standby slurry step, the aramid fiber short fibre and the Fanglun slurry cake are dispersed in water respectively, then
Mixing, obtains the slurry.
It is further preferred that be dispersed in water the aramid short fiber with fluffer, with pulper by the aramid fiber
Pulp is dispersed in water, and respectively obtains homodisperse two kinds of suspensions, then two kinds of suspensions are mixed, stir, obtain
The slurry.
The heat-press step, it is preferred that using roll-type hot press, condition are 120～320 DEG C, line 50～300kg/cm of pressure；
Or flat-bed press is adopted, condition is 120～320 DEG C, 10～60MPa of pressure.
The present invention also provides aramid paper prepared by above-mentioned preparation method.
It is also an object of the present invention to provide above-mentioned aramid paper prepare paper honeycomb sandwich material, heat-barrier material,
Application in fire proofing, electronic material, friction material, TRANSFORMER INSULATING MATERIAL.
The present invention also provides a kind of preparation method of paper honeycomb sandwich material, including using above-mentioned aramid paper, core bar glue
It is coated on the surface of the ground floor of the aramid paper.
Additionally, the present invention also provides a kind of paper honeycomb sandwich material, including above-mentioned aramid paper, its SMIS bar glue is coated on
The surface of the ground floor of the aramid paper.
As one kind preferred embodiment, the present invention provides a kind of aramid paper, with more than two layers structures, wherein first
Layer is above other each layers；Per layer independently includes aramid short fiber and Fanglun slurry cake, and in ground floor, Fanglun slurry cake contains
Amount is higher than other each layers；On the basis of the total absolute dry mass of the ground floor fiber, the mass percentage content of Fanglun slurry cake is 40
～55%；Respectively on the basis of the total absolute dry mass of other each layer fibers, the mass percentage content of Fanglun slurry cake is 20～35%,
And the content of each layer Fanglun slurry cake is identical.
Used as a kind of preferred embodiment, the present invention provides a kind of aramid paper, with more than two layers structures, wherein the
One layer above other each layers；Per layer independently includes aramid short fiber and Fanglun slurry cake, Fanglun slurry cake in ground floor
Content is higher than other each layers；On the basis of the total absolute dry mass of the ground floor fiber, the mass percentage content of Fanglun slurry cake is
45～50%；Respectively on the basis of the total absolute dry mass of other each layer fibers, the mass percentage content of Fanglun slurry cake is 25～
30%, and the content of each layer Fanglun slurry cake is identical.
The present invention a kind of preferred aramid paper is also provided, with three-decker, ground floor above the second layer, the second layer
In ground floor and the centre of third layer；Three layers are all made up of aramid fiber short fibre and Fanglun slurry cake, the length of the aramid fiber short fibre
For 4～20mm, the weight average length of the Fanglun slurry cake is 0.5～2mm, and beating degree is 30～70 ° of SR；With total absolute dry mass of paper
On the basis of, the percentage ratio of three layers of quality is：
Ground floor:The second layer:Third layer=3～30%:35～48.5%:35～48.5%；
Respectively on the basis of the total absolute dry mass of per layer of fiber：
In ground floor, the mass percentage content of aramid fiber short fibre is 45～60%, the mass percentage content of Fanglun slurry cake
For 40～55%；
In the second layer and third layer, the mass percentage content of aramid fiber short fibre is 65～80%, the quality of Fanglun slurry cake
Degree is 20～35%.
The present invention a kind of preferred aramid paper is also provided, with three-decker, ground floor above the second layer, second
Layer is in ground floor and the centre of third layer；Three layers are all made up of aramid fiber short fibre and Fanglun slurry cake, the length of the aramid fiber short fibre
Spend for 6～12mm；On the basis of total absolute dry mass of paper, the percentage ratio of three layers of quality is：
Ground floor:The second layer:Third layer=5～25%：37.5～47.5%：37.5～47.5%；
Respectively on the basis of the total oven dry weight of per layer of fiber：
In ground floor, the mass percentage content of aramid fiber short fibre is 50～55%, the mass percentage content of Fanglun slurry cake
For 45～50%, the weight average length of the Fanglun slurry cake is 0.8～1.3mm, and beating degree is 50～60 ° of SR；
In the second layer and third layer, the mass percentage content of aramid fiber short fibre is 70～75%, the quality of Fanglun slurry cake
Degree is 25～30%, and the weight average length of the Fanglun slurry cake is 1.1～1.5mm, and beating degree is 40～45 ° of SR.
Above-mentioned preferred aramid paper, it is preferred to use prepared by aforesaid preparation method.
Aramid paper of the present invention, including including ground floor, per layer independently can also all include it is commonly used in the art
Binding agent and/or dispersant.Binding agent and/or dispersant mass percent shared in each layer, can be according to concrete production
Conditional decision, generally 0.001%-0.1%.
Aramid short fiber is smooth for straight bar-shaped, surface, and skeleton function is played in page；And Fanglun slurry cake in membranaceous or
Fine strip, plays a part of to increase fiber combining in page.Aramid paper of the present invention adopts multiple structure, and ground floor
Using higher Fanglun slurry cake ratio, cloth wick bar is applied in the layer surface so as to by the pore size control of ground floor in less scope
Can prevent glue from too oozing inside aramid paper during glue.And higher aramid short fiber is adopted in aramid paper intermediate layer and bottom
Ratio, it is ensured that aramid paper has higher mechanical property, also enters page beneficial to dipping glue in honeycomb dipping process in addition
It is internal.
Two layers or more than the four layers aramid papers with structure of the present invention, it is also possible to as comb core paper, but
It is the present invention preferably aramid paper with three-decker, reason is：
(1) three layer of aramid paper is compared two layers of aramid paper and has more preferable evenness in forming process, so as to have preferably
Mechanical property.
(2) for more than four layers aramid papers, three layers of aramid paper are compared, the room for promotion of its mechanical property is little.In addition, by
The preparation of aramid paper in the present invention uses multilamellar Top wire former, if more than four layers aramid papers of production, the knot to pulp distributor
Structure, slurry dispersion and induction system are put forward higher requirement, and considerably increase production cost.
The preparation of aramid paper of the present invention, using multilamellar Top wire former, what is be related to has the paper machine of multiple independent flow passages,
The structure disclosed in application for a patent for invention (publication number CN103137931A, publication date on June 5th, 2013) can be adopted.With three
As a example by runner inclined wire paper machine, structure is shown in Fig. 2.Pulp distributors of the wherein A for oblique net paper machine, pulp distributor A point is separate three
Layer, is represented with 1,2,3 respectively, and slurry is entered will not wherein occur mixing.B is the commutating zone of paper machine, is also classified into three runners, with
1,2,3 layers of pulp distributor A match.The effect of commutating zone B is, the slurry rectification for coming from pulp distributor A, to produce high-strength micro-turbulence
Flow regime, do not produce vortex, so that the fluid stable of slurry, so just can ensure that three layers of slurry when shaping
Do not mix and obtain the good uniformity.Slurry is reached after passing through commutating zone B at the drainage and formation area C of oblique net paper machine,
Make to come from by vacuum dehydration the three floor slurry of the commutating zone B drainage and formation at the drainage and formation C areas.Aramid paper of the present invention
Ground floor slurry, can manufacture paper with pulp shaping against forming net, it is also possible to manufacture paper with pulp shaping away from forming net.Specific to said structure
Paper machine, the slurry of ground floor can enter the layer 1 of pulp distributor, shape in the side away from forming net.Ground floor slurry
The layer 3 of pulp distributor can be entered, is shaped in close proximity to the side of forming net.
Certainly, the preparation of aramid paper of the present invention, each layer that this area can also be adopted conventional are manufactured paper with pulp shaping, right respectively
The method for being bondd afterwards.But the mechanical property of aramid paper prepared by this method be far inferior to multilamellar of the present invention while
Manufacture paper with pulp the method for shaping.
The present invention is consisted of the structure and fiber for optimizing aramid paper, there is provided a kind of aramid paper of superior performance, especially
The preparation of suitable high-performance cellular sandwich material.With embodiment 1 and 2 prepare aramid paper as raw material, obtained cellular sandwich material
The compressive strength of material is respectively 1.62MPa and 1.35MPa, L and is respectively 1.28MPa and 1.30MPa, L to shearing to shear strength
Modulus is respectively 83.1MPa and 80.0MPa, W and is respectively 0.89MPa and 0.80MPa, W to modulus of shearing difference to shear strength
For 38.3Mpa and 37.1MPa.
Description of the drawings
Hereinafter, with reference to accompanying drawing describing embodiment of the present invention in detail, wherein：
Fig. 1 is shown the preparation technology flow chart of aramid paper cellular sandwich material.
Fig. 2 is shown the structural representation of three runner inclined wire paper machines, and wherein A represents the pulp distributor of oblique net paper machine, 1,
2nd, 3 three independent stratums of pulp distributor A are represented, B represents commutating zone, and C represents formation zone, and D represents the multilamellar aramid paper after shaping.
The photo of Fig. 3 is shown that aramid paper prepared by embodiment 1 is cellular sandwich material prepared by raw material.
The photo of Fig. 4 is shown that aramid paper prepared by comparative example 2 is cellular sandwich material prepared by raw material.
Specific embodiment
The present invention is illustrated referring to specific embodiment.It will be appreciated by those skilled in the art that these embodiments are only
For illustrating the present invention, which limits the scope of the present invention never in any form.
Experimental technique in following embodiments, if no special instructions, is conventional method.Medicine used in following embodiments
Material raw material, reagent material etc., if no special instructions, are commercially available purchase product.
Embodiment 1A kind of three layers of aramid paper
A kind of aramid paper, with three-decker, above the second layer, the second layer is located at ground floor and third layer to ground floor
Centre.The fiber composition of each layer is shown in Table 1.
The aramid paper is prepared via a method which：
(1) standby slurry
According to the weight proportion shown in table 1, prepare PPTA chopped strand and poly- paraphenylene terephthalamide
P-phenylenediamine fibrillation dissolving pulp.
Above-mentioned PPTA chopped strand is dispersed in water with fluffer, will be above-mentioned poly- with pulper
Poly P phenylene diamine terephthalamide fibrillation dissolving pulp is dispersed in water, then two kinds of suspensions are mixed, and stirs, obtains solid hundred
Point content is 0.05% slurry.According to the method described above, slurry A, B, C are respectively obtained.
(2) it is laminated shaping of manufacturing paper with pulp
Slurry A, B, C are sent into the inclined wire paper machine of three independent flow passages.The structure of inclined wire paper machine is as shown in Figure 2.
Wherein slurry A enters the layer 1 of pulp distributor, and slurry B and C respectively enter the layer 2 and layer 3 of pulp distributor, then in formation zone while layer
Folded shaping of manufacturing paper with pulp, slurry A, B and C form ground floor, the second layer and the third layer of aramid paper respectively.
(3) it is dehydrated
(4) squeeze
(5) it is dried
Dry at 105 DEG C.
(6) hot pressing
Using roll-type hot press, condition is 130 DEG C, line pressure 200kg/cm.
The physical property of obtained aramid paper is as follows：(1) thickness：90μm；Quantitatively：50g/m2；(2) longitudinal anti-tensile is strong
Degree：4.0kN/m；(3) cross direction tensile strength：2.8kN/m；(4) longitudinal elongation at break rate：5.5%；(5) transverse breakage percentage elongation：
3.7%；(6) longitudinal tear degree：875mN；(7) horizontal tearability：1250mN.
Embodiment 2A kind of three layers of aramid paper
A kind of aramid paper, with three-decker, above the second layer, the second layer is located at ground floor and third layer to ground floor
Centre.The fiber composition of each layer is shown in Table 1.
The aramid paper is prepared via a method which：
(1) standby slurry
According to the weight proportion shown in table 1, prepare poly(isophthaloyl metaphenylene diamine) chopped strand and poly- isophthaloyl
M-diaminobenzene. precipitating pulp.
Poly(isophthaloyl metaphenylene diamine) chopped strand is dispersed in water with fluffer, with pulper by poly- isophthalic diformazan
Acyl m-diaminobenzene. precipitating pulp is dispersed in water, then two kinds of suspensions are mixed, and stirs, and obtaining percent solids is
0.04% slurry.Prepare slurry A, B, C according to the method described above respectively.
(2) it is laminated shaping of manufacturing paper with pulp
Slurry A, B, C are sent into the inclined wire paper machine of three independent flow passages.The structure of inclined wire paper machine is as shown in Figure 2.
Wherein slurry A enters the layer 3 of pulp distributor, and slurry B and C respectively enter the layer 1 and layer 2 of pulp distributor, then in formation zone while layer
Folded shaping of manufacturing paper with pulp, slurry A, B and C form ground floor, the second layer and the third layer of aramid paper respectively.
(3) it is dehydrated
(4) squeeze
(5) it is dried
Dry at 110 DEG C.
(6) hot pressing
Using flat-bed press, condition is 150 DEG C, 30MPa pressure.
The physical property of obtained aramid paper is as follows：(1) thickness：80 μm, quantitatively：50g/m2；(2) longitudinal anti-tensile is strong
Degree：3.5kN/m；(3) cross direction tensile strength：2.5kN/m；(4) longitudinal elongation at break rate：8.7%；(5) transverse breakage percentage elongation：
6.3%；(6) longitudinal tear degree：625mN；(7) horizontal tearability：1120mN.
Embodiment 3A kind of two layers of aramid paper
A kind of aramid paper, with two-layer structure：Ground floor and the second layer.The fiber composition of each layer is shown in Table 1.
The aramid paper is prepared via a method which：
(1) standby slurry
According to the weight proportion shown in table 1, prepare PPTA chopped strand and poly- paraphenylene terephthalamide
P-phenylenediamine precipitating pulp.
PPTA chopped strand is dispersed in water with fluffer, with pulper by poly- terephthaldehyde
Acyl p-phenylenediamine precipitating pulp is dispersed in water, then two kinds of suspensions are mixed, and stirs, and obtaining percent solids is
0.06% slurry.Prepare slurry A, B according to the method described above respectively.
(2) it is laminated shaping of manufacturing paper with pulp
Slurry A, B are sent into the inclined wire paper machine of three independent flow passages.The structure of inclined wire paper machine is as shown in Figure 2.Its
Middle slurry A enters the layer 3 of pulp distributor, and slurry B enters layer 2, is then laminated shaping of manufacturing paper with pulp, slurry A and B difference simultaneously in formation zone
Form the ground floor and the second layer of aramid paper.
(3) it is dehydrated
(4) squeeze
(5) it is dried
Dry at 105 DEG C.
(6) hot pressing
Using flat-bed press, condition is 120 DEG C, 10MPa pressure.
The physical property of obtained aramid paper is as follows：(1) thickness：70 μm, quantitatively：50g/m2；(2) longitudinal anti-tensile is strong
Degree：3.3kN/m；(3) cross direction tensile strength：2.3kN/m；(4) longitudinal elongation at break rate：8.5%；(5) transverse breakage percentage elongation：
6.0%；(6) longitudinal tear degree：605mN；(7) horizontal tearability：1015mN.
The fiber prescription of aramid paper described in 1 embodiment 1-3 of table
Embodiment 4-6A kind of three layers of aramid paper
A kind of aramid paper, with three-decker, above the second layer, the second layer is located at ground floor and third layer to ground floor
Centre.The fiber composition of each layer is shown in Table 2.
Prepare according to the method described in embodiment 1, wherein different technological parameters is shown in Table 3.The aramid paper for preparing
Performance parameter is shown in Table 3.
The fiber prescription of aramid paper described in 2 embodiment 4-6 of table
The performance parameter of aramid paper preparation technology parameter and aramid paper described in 3 embodiment 4-6 of table
Comparative example 1-2A kind of aramid paper
A kind of aramid paper, with three-decker, the fiber composition of each layer is identical, and fiber composition is shown in Table 4.
Prepare according to the method described in embodiment 1.
The fiber composition of aramid paper described in 4 comparative example 1-2 of table
Note：a):The length of PPTA chopped strand is 8mm；
b)：The weight average length of PPTA fibrillation dissolving pulp is 1.1mm, and beating degree is 55 ° of SR.
Embodiment 7-8A kind of cellular sandwich material
The aramid paper of embodiment 1 and 2 is respectively adopted, according to the preparation technology flow process shown in Fig. 1, according to this area routine
Method and condition prepare the cellular sandwich material of embodiment 7 and 8, and its SMIS bar glue is coated on the table of the ground floor of aramid paper
Face.
The cellular sandwich material property of embodiment 7 is as follows：Compressive strength 1.62MPa, L to shear strength 1.28MPa, L to
Modulus of shearing 83.1MPa, to shear strength 0.89MPa, W is to modulus of shearing 38.3Mpa for W.
The cellular sandwich material property of embodiment 8 is as follows：Compressive strength 1.35MPa, L to shear strength 1.30MPa, L to
Modulus of shearing 80.0MPa, to shear strength 0.80MPa, W is to modulus of shearing 37.1MPa for W.
Comparative example 3A kind of cellular sandwich material
Using the aramid paper of comparative example 1, according to the preparation technology flow process shown in Fig. 1, according to the conventional method in this area and
Condition prepares cellular sandwich material, and its SMIS bar glue is coated on any surface of aramid paper.But in stretching workshop section, material part
There is degumming phenomenon in region, the situation as shown in right side in Fig. 4；There is bonding and is unable to Uniform Tension in another part region simultaneously
Phenomenon, shows as irregular loose structure, the situation as shown in left side in Fig. 4.Illustrate that the material cannot meet cellular sandwich material
The key propertys such as the homogeneity of material, therefore stop follow-up workshop section, ultimately fail to successfully prepare cellular sandwich material.
Comparative example 4A kind of cellular sandwich material
Using the aramid paper of comparative example 2, according to the preparation technology flow process shown in Fig. 1, according to the conventional method in this area and
Condition prepares cellular sandwich material, and its SMIS bar glue is coated on any surface of aramid paper.
Cellular sandwich material prepared by this comparative example, performance are as follows：Compressive strength 0.88MPa, L is to shear strength
, to modulus of shearing 59.1MPa, to shear strength 0.49MPa, W is to modulus of shearing 26.3Mpa for W for 0.81MPa, L.
Test example 1Impact of the different fibre furnish to impregnation effect and honeycomb paper structure
(1) core bar glue immersion situation：
The aramid paper of Example 1 and comparative example 1-2, respectively after core bar glue is coated on the surface of ground floor, cuts aramid fiber
Paper section is scanned electron microscopic observation, observes the thickness that core bar glue immerses page.
(2) honeycomb texture and mechanical property：
The aramid paper of Example 1 and comparative example 1-2, according to the preparation technology flow process shown in Fig. 1, according to this area routine
Method, prepare cellular sandwich material under the same terms respectively, its SMIS bar glue is coated on the surface of the ground floor of aramid paper.System
During standby, after perusal stretching workshop section, the length of side and the angle on each side of each cellular unit, judges whether honeycomb is in positive six
Side shape.And cellular mechanical property obtained in testing respectively.
As a result：
(1) core bar glue immersion situation
Aramid paper prepared by embodiment 1, gross thickness are 80 μm, about 8-10 μm of thickness in core bar glue immersion page, about
Account for 1/10th of page gross thickness.
Aramid paper prepared by comparative example 1, gross thickness are 85 μm, and core bar glue has in the range of the whole thickness of aramid paper point
Cloth, or even have minority glue to be distributed in third layer (bottom) surface.
Aramid paper prepared by comparative example 2, gross thickness are 70 μm, about 6-8 μm of thickness in core bar glue immersion page, are accounted for
/ 10th of page gross thickness.
(2) honeycomb texture and mechanical property：
With the cellular sandwich material that aramid paper described in embodiment 1 is prepared as raw material, with homogeneous orthohexagonal honeycomb
Structure, photo are shown in Fig. 3.
With aramid paper described in comparative example 1 as raw material prepare cellular sandwich material when, core bar glue excessively oozes inside page, one
There is staying in the less situation of core bar glue on surface in subregion, causes adhesion strength low, easily degumming occurs in stretching workshop section
Phenomenon, the situation as shown in right side in Fig. 4；While another part region even core bar glue occurs ooze to the situation at the page back side, because
There is bonding in stretching workshop section and is unable to the phenomenon of Uniform Tension in this, shows as irregular loose structure, such as left side institute in Fig. 4
Show situation.
Cellular sandwich material is prepared as raw material with aramid paper described in comparative example 2, workshop section can be pulled into homogeneous in stretching
Orthohexagonal honeycomb texture, but the final mechanical property of honeycomb is inferior to honeycomb obtained in aramid paper described in example 1, and which is concrete
As a result as described in comparative example 4.
Specific description of embodiments of the present invention above is not intended to limit the present invention, and those skilled in the art can be according to this
Various changes or deformation are made in invention, without departing from the spirit of the present invention, all should belong to the model of claims of the present invention
Enclose.
Claims (16)
1. a kind of aramid paper, with three-decker, above the second layer and third layer, the second layer is in ground floor and for ground floor
Three layers of centre；Per layer independently includes aramid short fiber and Fanglun slurry cake, and in ground floor, the content of Fanglun slurry cake is higher than which
Its each layer, on the basis of the total absolute dry mass of the ground floor fiber, the mass percentage content of Fanglun slurry cake is 45～50%；Institute
State in ground floor, the weight average length of the Fanglun slurry cake is 0.8～1.3mm, and beating degree is 50～60 ° of SR；
Respectively on the basis of the total absolute dry mass of other each layer fibers, independently, the mass percentage content of Fanglun slurry cake is each layer
20～35%；In other each layers, the weight average length of the Fanglun slurry cake is 1.1～1.5mm, and beating degree is 40～45 ° of SR；
On the basis of total absolute dry mass of the aramid paper, the percentage ratio of three layers of quality is：
Ground floor:The second layer:Third layer=5～25%：37.5～47.5%：37.5～47.5%.
2. aramid paper according to claim 1, it is characterised in that respectively with the total absolute dry mass of other each layer fibers as base
Standard, independently, the mass percentage content of Fanglun slurry cake is 25～30% to each layer.
3. aramid paper according to claim 1, it is characterised in that respectively with the total absolute dry mass of other each layer fibers as base
Standard, the mass percentage content of Fanglun slurry cake is 20～35%, and the mass percentage content of the Fanglun slurry cake of each layer is identical.
4. aramid paper according to claim 2, it is characterised in that respectively with the total absolute dry mass of other each layer fibers as base
Standard, the mass percentage content of Fanglun slurry cake is 25～30%, and the mass percentage content of the Fanglun slurry cake of each layer is identical.
5. according to arbitrary described aramid paper in Claims 1-4, it is characterised in that the aramid fiber short fibre is selected from poly- to benzene
One or two in two formyl p-phenylenediamine chopped strands and poly(isophthaloyl metaphenylene diamine) chopped strand；
The Fanglun slurry cake is starched selected from PPTA fibrillation dissolving pulp, PPTA precipitating
One or more in the dregs of rice and poly(isophthaloyl metaphenylene diamine) precipitating pulp.
6. aramid paper according to claim 5, it is characterised in that the length of the aramid fiber short fibre is 4～20mm.
7. aramid paper according to claim 6, it is characterised in that the length of the aramid fiber short fibre is 6～12mm.
8. a kind of preparation method of aramid paper, the aramid paper have three-decker, and wherein ground floor is above other each layers；Often
Layer is independently made up of aramid short fiber and Fanglun slurry cake, and in ground floor, the content of Fanglun slurry cake is higher than other each layers, with institute
On the basis of stating the total absolute dry mass of ground floor fiber, the mass percentage content of Fanglun slurry cake is 45～50%, the Fanglun slurry cake
Weight average length be 0.8～1.3mm, beating degree be 50～60 ° of SR；
Respectively on the basis of the total absolute dry mass of other each layer fibers, independently, the weight percent content of Fanglun slurry cake is each layer
20～35%, the weight average length of the Fanglun slurry cake is 1.1～1.5mm, and beating degree is 40～45 ° of SR；
On the basis of total absolute dry mass of the aramid paper, the percentage ratio of three layers of quality is：
Ground floor:The second layer:Third layer=5～25%：37.5～47.5%：37.5～47.5%；
The aramid fiber short fibre is selected from PPTA chopped strand and poly(isophthaloyl metaphenylene diamine) is chopped
One or two in fiber；
The Fanglun slurry cake is starched selected from PPTA fibrillation dissolving pulp, PPTA precipitating
One or more in the dregs of rice and poly(isophthaloyl metaphenylene diamine) precipitating pulp；
The preparation method includes that per layer is starched according to proportioning is independently standby；Slurry enters the paper machine for having multiple independent flow passages,
Formation zone is laminated shaping of manufacturing paper with pulp simultaneously；It is dehydrated, is dried；Hot pressing.
9. preparation method according to claim 8, it is characterised in that respectively with the total absolute dry mass of other each layer fibers as base
Standard, independently, the weight percent content of Fanglun slurry cake is 25～30% to each layer.
10. preparation method according to claim 8 or claim 9, it is characterised in that the content of Fanglun slurry cake in described other each layers
It is identical.
11. preparation methoies according to claim 8, it is characterised in that the standby slurry step, the aramid fiber short fibre and institute
State Fanglun slurry cake to be dispersed in water respectively, then mix, obtain the slurry.
12. preparation methoies according to claim 11, it is characterised in that the aramid short fiber is disperseed with fluffer
In water, the Fanglun slurry cake is dispersed in water with pulper, respectively obtains homodisperse two kinds of suspensions, then by two kinds
Suspension mixes, and stirs, obtains the slurry.
13. preparation methoies according to claim 8, it is characterised in that the heat-press step, using roll-type hot press, bar
Part is 120～320 DEG C, line 50～300kg/cm of pressure；Or adopt flat-bed press, condition is 120～320 DEG C, pressure 10～
60MPa。
The aramid paper that preparation method any one of 14. claim 8 to 13 is prepared.
Aramid paper any one of 15. claim 1 to 7, or the aramid paper described in claim 14 preparing paper honeycomb
Application in sandwich material, heat-barrier material, fire proofing, electronic material, friction material, TRANSFORMER INSULATING MATERIAL.
A kind of 16. paper honeycomb sandwich materials, including the aramid paper any one of claim 1 to 7, or claim 14 institute
The aramid paper stated, its SMIS bar glue are coated on the surface of the ground floor of the aramid paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166497.4A CN103952947B (en) | 2014-04-23 | 2014-04-23 | A kind of aramid paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166497.4A CN103952947B (en) | 2014-04-23 | 2014-04-23 | A kind of aramid paper and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103952947A CN103952947A (en) | 2014-07-30 |
| CN103952947B true CN103952947B (en) | 2017-04-05 |
Family
ID=51330285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410166497.4A Active CN103952947B (en) | 2014-04-23 | 2014-04-23 | A kind of aramid paper and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103952947B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594106A (en) * | 2014-12-25 | 2015-05-06 | 深圳昊天龙邦复合材料有限公司 | Layered composite aramid fiber paper and preparation method thereof |
| CN104594107A (en) * | 2014-12-29 | 2015-05-06 | 圣欧芳纶（江苏）股份有限公司 | Preparation method of meta-position aramid fiber synthetic fiber paper of imitated rice paper |
| CN106468038B (en) * | 2015-08-19 | 2018-04-10 | 超美斯新材料股份有限公司 | Aramid fiber cellular fibronectin paper and preparation method thereof |
| CN108486949A (en) * | 2018-03-22 | 2018-09-04 | 盐城德安德新材料科技有限公司 | A kind of preparation method of MULTILAYER COMPOSITE aramid paper |
| CN110965394B (en) * | 2019-12-26 | 2022-08-26 | 株洲时代新材料科技股份有限公司 | Aramid fiber and wood pulp composite paper and preparation method thereof |
| CN112553942A (en) * | 2020-12-02 | 2021-03-26 | 航天特种材料及工艺技术研究所 | Dielectric loss aramid paper, wave-absorbing honeycomb and preparation method |
| CN114211847A (en) * | 2021-12-23 | 2022-03-22 | 芜湖创联新材料科技有限公司 | Aramid paper special for aramid paper honeycomb and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563570A (en) * | 2004-03-23 | 2005-01-12 | 华南理工大学 | Amide aramid fiber paper, preparation method and application |
| CN101003959A (en) * | 2007-01-16 | 2007-07-25 | 陕西科技大学 | Multiple proportional layered composite manufactured amide paper of aramid fiber |
| CN103137931A (en) * | 2013-01-23 | 2013-06-05 | 广州华创化工材料科技开发有限公司 | Diaphragm paper and preparation method and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103502532A (en) * | 2011-01-27 | 2014-01-08 | 深圳昊天龙邦复合材料有限公司 | Aramid honeycomb core board |
| CN102154914B (en) * | 2011-02-24 | 2013-03-20 | 钟洲 | Method for preparing aramid paper and aramid paper prepared by method |
-
2014
- 2014-04-23 CN CN201410166497.4A patent/CN103952947B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563570A (en) * | 2004-03-23 | 2005-01-12 | 华南理工大学 | Amide aramid fiber paper, preparation method and application |
| CN101003959A (en) * | 2007-01-16 | 2007-07-25 | 陕西科技大学 | Multiple proportional layered composite manufactured amide paper of aramid fiber |
| CN103137931A (en) * | 2013-01-23 | 2013-06-05 | 广州华创化工材料科技开发有限公司 | Diaphragm paper and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 芳纶纸蜂窝力学性能与纸张性能相关性的研究;王厚林 等;《功能材料》;20131231;第44卷(第3期);第349-352页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103952947A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103952947B (en) | A kind of aramid paper and preparation method thereof | |
| CN102154914B (en) | Method for preparing aramid paper and aramid paper prepared by method | |
| US8187418B2 (en) | Method of making multilayer nonwoven fibrous mats | |
| CN100554581C (en) | Multiple proportional layered compound polyfiber amide paper of manufacturing paper with pulp and preparation method thereof | |
| CA2997266C (en) | Composite products of paper and cellulose nanofibrils and process of making | |
| CN104088199B (en) | A kind of carrier band encapsulation paper using and preparation method | |
| CN104147939B (en) | A kind of support layer material for filter membrane and manufacture method thereof and filter membrane | |
| CN103741558B (en) | A kind of manufacture method of antique artistic paper | |
| CN106894268A (en) | A kind of high-strength cow boxboard and preparation method thereof | |
| CN106012658B (en) | Breathable medical adhesive tape base material and its manufacture method | |
| CN102864677A (en) | Para-aramid paper and preparation method thereof | |
| WO2012100653A1 (en) | Aramid honeycomb core board | |
| CN102261009A (en) | Preparation method of aramid insulating paper | |
| CN106795055A (en) | Composition, panel and sheet material and its production method comprising mineral filler | |
| EP3265609B1 (en) | Pulp mixture for production of a paperboard product with high strength in z-direction | |
| CN110144752A (en) | A kind of production technology of high internal bond fluting medium | |
| CN101440588B (en) | Base paper of paper yarn for textile and preparation technique | |
| EP3137680B1 (en) | Process for producing at least one ply of a paper or board and a paper or board produced according to the process | |
| CN104404817B (en) | Aramid fiber-glass-fibre composite tab material and preparation method thereof | |
| CN103938804B (en) | Composite fibre grid ribs layer product and preparation method thereof | |
| CN107447566B (en) | The production technology of paper and lower paper on a kind of tectorial paper | |
| KR101547776B1 (en) | Aramid wet-laid non woven fabrics for honeycomb and process of producing thereof | |
| JP2021110080A (en) | Composite paper manufacturing method and composite paper | |
| US3019155A (en) | Decorative laminates | |
| CN110331622B (en) | Manufacturing method of waterproof and antifreezing kraft paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170228 Address after: 510641 Tianhe District, Guangdong, No. five road, No. 381, Applicant after: Hu Jian Applicant after: Wang Yi Applicant after: Guangzhou South China University of Technology Asset Management Co., Ltd. Address before: 510641 Tianhe District, Guangdong, No. five road, No. 381, Applicant before: South China University of Technology |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170621 Address after: 118 No. 412199 Hunan city of Zhuzhou province Zhuzhou County Lu Kou Zhen Wan Tang Cun Fubo Road Patentee after: Zhuzhou times Mstar Technology Ltd Address before: 510641 Tianhe District, Guangdong, No. five road, No. 381, Co-patentee before: Wang Yi Patentee before: Hu Jian Co-patentee before: Guangzhou South China University of Technology Asset Management Co., Ltd. |
|
| TR01 | Transfer of patent right |