CN111519307A - Epoxy resin/UHMWPE hollow honeycomb composite board and manufacturing method thereof - Google Patents
Epoxy resin/UHMWPE hollow honeycomb composite board and manufacturing method thereof Download PDFInfo
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- CN111519307A CN111519307A CN202010315223.2A CN202010315223A CN111519307A CN 111519307 A CN111519307 A CN 111519307A CN 202010315223 A CN202010315223 A CN 202010315223A CN 111519307 A CN111519307 A CN 111519307A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
- E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
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Abstract
The invention discloses an epoxy resin/UHMWPE hollow honeycomb composite board and a manufacturing method thereof. The manufacturing steps are as follows: the UHMWPE short fiber yarns are used as warp yarns and weft yarns, a multi-layer interlocking structure fabric is manufactured by adopting a method of continuously replacing a plurality of groups of warp yarns with alternating layers, the multi-layer interlocking structure fabric is used as a composite material reinforcement, and the thermosetting epoxy resin-based composite plate with the shape of a right-angle diamond hollow honeycomb is manufactured by adopting a method of inserting a core rod and performing compression molding. The hollow rhombic honeycomb composite boardThe tensile strength, the bending strength and the compressive strength are high; the unit volume mass of the hollow rhombic honeycomb composite board can be reduced to 0.5g/cm3And the steel plate has the advantages of light weight and high strength.
Description
Technical Field
The invention belongs to the technical field of textile composite materials, and particularly relates to an epoxy resin/UHMWPE hollow honeycomb composite board and a manufacturing method thereof.
Background
UHMWPE (ultra-high molecular weight polyethylene) fibers, KEVLAR (poly-p-phenylene terephthalamide, aramid for short) fibers and Carbon Fibers (CF) belong to high-strength fiber materials, and meanwhile, the composite material has good extensibility and excellent bending resistance, and has good application in the fields of aerospace, ships, automobiles, building storage and the like as a composite material reinforcement.
The density of the UHMWPE fiber is 0.92-0.96 g/cm3Density less than water, 1.37-1.44 g/cm compared to KEVLAR fiber31.76 to 1.80g/cm of carbon fiber3Obviously, the light weight is the outstanding characteristic. If the coating is directly applied, such as processing the coating into a rope or coating a small amount of pipes, the product can float on the water surface, and the rolling, transportation, installation and the like are convenient.
The density of the composite material depends on the density of the substrate and reinforcement materials and their mass fraction. Such as: aramid fiber/high-strength polyethylene fiber hybrid composite material, aramid fiber/UHMWPE fiber is made into hybrid composite material laminate, wherein the UHMWPE fiber content is only 20% of the whole material, and the density of each hybrid laminate is far higher than that of water; for another example: the UHMWPE short fiber yarn machine fabric reinforced composite board is characterized in that UHMWPE fibers and thermosetting epoxy resin are compounded, and the mass ratio of the obtained UHMWPE fibers is only 34.3% at the highest even though modification treatment such as corona, oxidation, acid corrosion, silane coupling agent bonding and the like is adopted. Therefore, the problem of weight reduction of the reinforced composite material cannot be solved only by the low density of the UHMWPE, and the solution of the problem of the hollow structure of the composite material is still a practical and effective research and exploration idea.
Disclosure of Invention
The invention aims to provide an epoxy resin/UHMWPE hollow honeycomb composite board and a manufacturing method thereof, and solves the problems.
The invention provides an epoxy resin/UHMWPE hollow honeycomb composite board, which comprises: the fabric with the multilayer interlocking structure is made of UHMWPE, the surface of the fabric with the multilayer interlocking structure is coated with thermosetting epoxy resin, and the epoxy resin/UHMWPE hollow honeycomb composite board is in a hollow rhombic honeycomb shape.
The invention also provides a manufacturing method of the epoxy resin/UHMWPE hollow honeycomb composite plate, which comprises the following steps:
(1) taking UHMWPE short fiber yarns as warp yarns and weft yarns, and adopting a method of continuously replacing the interwoven layers by a plurality of groups of warp yarns to manufacture a multilayer interlocking structure fabric;
(2) the multilayer interlocking structure fabric is taken as a composite material reinforcement, is immersed in mixed liquid, and is manufactured into the right-angle diamond hollow honeycomb epoxy resin/UHMWPE hollow honeycomb composite board by adopting a method of inserting a core rod and compression molding.
According to a further technical scheme, before the multilayer interlocking structure fabric in the step (2) is immersed in the mixed solution, the multilayer interlocking structure fabric is soaked in acetone for 4 hours, taken out and squeezed to be dry, washed clean by deionized water and placed in an oven at the temperature of 70 ℃ to be dried for 1 hour.
According to a further technical scheme, the preparation method of the mixed solution in the step (2) comprises the following steps: taking thermosetting epoxy resin and a curing agent, preparing a mixed solution according to the mass ratio of the thermosetting epoxy resin to the curing agent of 3:1, fully stirring, and standing for 5-8 min until defoaming.
According to a further technical scheme, the compression molding method in the step (2) comprises the following steps:
(1) adjusting the horizontal position of a test platform, placing a bearing plate on the test platform, and coating a layer of separation oil agent or a layer of preservative film on the upper surface of the bearing plate;
(2) putting the multilayer interlocking structure fabric into a container filled with the mixed solution for soaking, and quickly and repeatedly stirring by using a glass rod to ensure that the mixed solution fully permeates into the multilayer interlocking structure fabric;
(3) taking out the multilayer interlocking structure fabric, and quickly cutting a core rod in each hole of the multilayer interlocking structure fabric;
(4) placing the multilayer interlocking structure fabric above the pressure bearing plate, and enabling each vertex below the multilayer interlocking structure fabric to be clamped into the corresponding groove vertex of the pressure bearing plate in an aligned mode;
(5) coating a layer of separation oiling agent or a layer of preservative film on the lower surface of a pressing plate, placing the pressing plate above the multilayer interlocking structure fabric, and enabling one surface of the pressing plate coated with the separation oiling agent or the preservative film to be in contact with the multilayer interlocking structure fabric, wherein at the moment, all vertexes above the multilayer interlocking structure fabric are aligned and clamped into corresponding groove vertexes of the pressing plate;
(6) a steel plate is placed above the pressure applying plate, and a gravity weight is placed above the steel plate and is pressurized;
(7) and after the mixed solution is basically cured, sequentially removing the gravity weight, the steel plate and the pressing plate, taking out the multilayer interlocking structure fabric containing the core rod, removing the bearing plate, then drawing out all the core rods, and drying to obtain the epoxy resin/UHMWPE hollow honeycomb composite plate.
According to a further technical scheme, the soaking and stirring time in the step (2) is less than 10 min.
According to the further technical scheme, after a core rod is quickly inserted into each hole of the multilayer interlocking structure fabric in the step (3), the angle of the core rod is adjusted, so that the top point of the core rod is matched with the layer changing junction point of the multilayer interlocking structure fabric.
According to a further technical scheme, the weight in the step (6) is 40kg, and the pressurizing time is more than or equal to 10 h.
According to a further technical scheme, the drying temperature in the step (7) is 70 ℃, and the drying time is more than or equal to 10 hours.
The invention has the advantages that:
(1) the hollow rhombic honeycomb composite board has the characteristics of high tensile strength, high bending strength and high compressive strength;
(2) the unit volume mass of the hollow rhombic honeycomb composite board can be reduced to 0.5g/cm3Left and right, has larger weight, high strength and excellent qualityAnd (4) potential.
Drawings
FIG. 1 is a schematic diagram showing the variation cycle of the interwoven layers of the multilayer interlocking structure fabric of an epoxy resin/UHMWPE hollow honeycomb composite board according to the present invention;
FIG. 2 is a card drawing of the multilayer interlocking structure fabric of an epoxy/UHMWPE hollow honeycomb composite panel according to the present invention;
FIG. 3 is a schematic structural diagram of a pressure bearing plate or a pressure applying plate;
FIG. 4 is a composite view of the molding;
FIG. 5 is a schematic structural diagram of a 4L (2+1) type epoxy resin/UHMWPE hollow honeycomb composite plate, wherein 5(a) is an integral structure, and 5(b) is a single-hole structure;
FIG. 6 is a card drawing of the multilayer interlocking structure fabric of the 4L (2+1) type epoxy/UHMWPE hollow honeycomb composite panel;
FIG. 7 is a schematic structural diagram of a 6L (3+2) type epoxy resin/UHMWPE hollow honeycomb composite plate, wherein 7(a) is an integral structure, and 7(b) is a single-hole structure;
FIG. 8 is a card drawing of the multilayer interlocking structure fabric of a 6L (3+2) type epoxy/UHMWPE hollow honeycomb composite panel;
fig. 9 is a schematic structural diagram of an 8L (4+3) type epoxy resin/UHMWPE hollow honeycomb composite plate, wherein 9(a) is an integral structure and 9(b) is a single-hole structure;
fig. 10 is a card drawing of the multilayer interlocking structure fabric of the 8L (4+3) type epoxy resin/UHMWPE hollow honeycomb composite panel.
The method comprises the following steps of 1, 11, 12, 13, 21, 3, 31, 4, 41, 6 and 7, wherein the fabric is of a multilayer interlocking structure, 11 is a layer-changing boundary point of the fabric of the multilayer interlocking structure, the lower vertex of the fabric of the multilayer interlocking structure, the upper vertex of the fabric of the multilayer interlocking structure, 2 is a pressure bearing plate, the vertex of a groove of the pressure bearing plate, the groove of the pressure bearing plate, the pressure applying plate, the groove of the pressure applying plate, the mandrel, the vertex of the mandrel, the test platform, the steel plate and the gravity weight.
Detailed Description
The invention provides a hollow rhombic honeycomb composite plate which is made of thermosetting epoxy resin serving as a base material and reinforced by UHMWPE yarns by adopting a multilayer interlocking structure weaving and compression molding technology. The basic manufacturing steps of the epoxy resin/UHMWPE hollow honeycomb composite board are as follows: the UHMWPE short fiber yarns are used as warp yarns and weft yarns, the multilayer interlocking structure fabric is manufactured by adopting a method of continuously replacing a plurality of groups of warp yarns with alternating layers → the multilayer interlocking structure fabric is used as a composite material reinforcement, and the thermosetting epoxy resin-based composite plate with the shape of a right-angle diamond hollow honeycomb is manufactured by adopting a method of inserting a core rod and compression molding.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are further described below. The invention is not limited to the embodiments listed but also comprises any other known variations within the scope of the invention as claimed.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The above steps are described in detail below:
(I) preparation of multilayer interlocking structural fabrics
The principle of the method for weaving the multi-layer interlocking structure fabric by continuously alternating interweaving layers of a plurality of groups of warp yarns is shown in figure 1.
1. All warp yarns are of the same material composition and linear density (thickness), and all weft yarns are of the same material composition and linear density (thickness).
2. The warp yarns are divided into upper and lower even groups which are sequentially set as Y from top to bottom1、Y2、Y3、…Yi、…YnAnd n groups of warp yarns.
3. The yarns of each group of warp yarns are arranged at an interval of 1:1: 1.
4. Each group of warp yarns is respectively interwoven with the weft yarns to form respective interweaving layers which are the 1 st, 2 nd, 3 rd, … th, i th, … th, (n-1) th and n th layers from top to bottom. The weave, the number of inserted weft yarns and the weft yarn density of each interwoven layer are the same.
5. In the continuous weaving process, each group of warp yarns continuously changes the interweaving level. The change of the interweaving layers is in a periodic rule, one period needs to be changed by 2n layers and is sequentially set as X1、X2、X3…Xj、…X2nAnd (4) a region. In each area, the interweaving layers continuously weave in the same number of weft yarns, and the woven fabric is equal in length.
(1) At X1In the region, n groups of warp yarns are respectively interwoven with the weft yarns at the original layer to form each interwoven layer.
(2) At X2Area, except for the uppermost warp Y1And the warp yarn Y of the lowermost layernAnd in addition to the original unchanged levels, the group of warp yarns in the odd-numbered layers is shifted up by one level, and the group of warp yarns in the even-numbered layers is shifted down by one level.
(3) At X3Region, Y1Down by one layer of YnAnd moving one layer upwards. X2The warp yarns which originally move upwards in the area continuously move upwards by one layer, and the warp yarns which originally move downwards continuously move downwards by one layer.
(4) In the next zones, the sets of warp yarns continue to exchange levels. When a certain group of warp yarns reaches the uppermost layer, two areas are continuously arranged on the uppermost layer, and then the warp yarns move downwards layer by layer. When a certain set of warp yarns reaches the lowermost layer, two areas are successively on the lowermost layer, and then moved up layer by layer.
(5) The specific level change rule of each group of warps is as follows:
Y1：1→1→2→3→…→i→…→(n-1)→n→n→(n-1)→…→i→…→3→2
Y2：2→3→…→i→…→(n-1)→n→n→(n-1)→…→j→…→3→2→1→1
Y3：3→2→1→1→2→3→…→i→…→(n-1)→n→n→(n-1)→…→i→…→4
…
…
Yi(odd number): i → (i-1) → (i-2) … → 3 → 2 → 1 → 2 → 3 → … → (i-2) → (i-1) → i +1)→(i+2)→…→(n-1)→n→n→(n-1)→…→(i+2)→(i+1)
Yi(even number): i → (i +1) → (i +2) → … → (n-1) → n → (n-1) → … → (i +2) → (i +1) → i → (i-1) → (i-2) … → 3 → 2 → 1 → 2 → 3 → … → (i-2) → (i-1)
…
…
Yn：n→n→(n-1)→(n-2)→…→i→…→3→2→1→1→2→3→…→i→…(n-2)→(n-1)
6. And (3) drafting the warps by a sequential-drawing method, wherein the number of the weave warp cycles of each weaving layer is m, the number of the heddles is (m × n), and the drafting sequence of each group of warps penetrating into the first heald frame to the (m × n) th heald frame is Y11、Y21、Y31…Yi1、…、Yn1、Y12、Y22、Y32、…Yi2…Yn2、…Y1m、Y2m、Y3m、…、Yim、…Ynm。
7. The schlieren drawing is shown in figure 2.
(1) Each set of warp yarns interweaves with weft yarns of the same interwoven layer in a set weave pattern
Representing warp stitch points, "□" representing weft stitch points.
(2) When the weft yarn is introduced to interweave with the warp yarns of one of the interwoven layers, the warp yarns of each interwoven layer are lifted above the interwoven layer, as shown by
Represents; the warp yarns in each of the interwoven layers below the interwoven layer are not raised, as indicated by "□" in the figure.
Let the length of the interwoven layer fabric made of each area be lmm and the thickness be hmm.
(II) die pressing composite molding, please refer to FIG. 4.
1. Preparation before compounding
(1) Soaking a sample 1 of the multilayer interlocking structure fabric in acetone for 4 hours, taking out and squeezing, washing the sample with deionized water, and drying the sample in a 70 ℃ oven for 1 hour.
(2) A manganese steel plate with the thickness of 0.5mm is selected and punched on a punch press to form two equilateral long straight angle fold lines, wherein the side length is (l +2h) mm, as shown in figure 3. One of which is used as a pressure bearing plate 2 and the other is used as a pressure applying plate 3.
(3) A plurality of square steel bars with the cross section of side length (l-h) mm are cut, and the surface is coated with a separation oil agent (or coated with a preservative film) to prepare the core rod 4.
(4) Taking thermosetting epoxy resin and a curing agent, preparing a mixed solution according to the mass ratio of the resin to the curing agent of 3:1, fully stirring, and standing for 5-8 min until defoaming basically.
2. Composite molding (as shown in figure 4)
(1) Adjusting the level of the test platform 5, placing the bearing plate 2, and coating a layer of separation oil agent or a layer of preservative film on the bearing plate 2. And coating a layer of separation oil agent on one surface of the pressing plate 3 or covering a layer of preservative film.
(2) The multilayer interlocking structure fabric 1 is put into a container filled with mixed liquid for soaking, and the glass rod is used for stirring repeatedly, so that the mixed liquid can permeate into the multilayer interlocking structure fabric 1 as fully as possible. The soaking and stirring time is controlled within 10 min.
(3) The multilayer interlocking structure fabric 1 is removed. A core rod 4 is inserted into each hole of the multilayer interlocking structural fabric 1. The angle of the mandrel 4 is adjusted so that the apex 41 of the mandrel conforms as closely as possible to the intersection 11 of the layer changes of the multi-layer interlocking structural fabric.
(4) The multi-layered interlocking structural fabric 1 is placed over the pressure bearing plate 2 such that the lower vertices 12 of each multi-layered interlocking structural fabric are aligned and snapped into the corresponding groove vertices 21 of the pressure bearing plate.
(5) The side of the pressing plate 3 (or covered with the preservative film) is placed above the multilayer interlocking structure fabric 1 and is in contact with the multilayer interlocking structure fabric 1. The upper apex 13 of each multi-layer interlocking structural fabric is snapped into registration with the groove apex 31 of the corresponding press plate.
(6) A steel plate 6 is placed above the pressing plate 3. A40 kg weight 7 was placed on the steel plate 6 and pressed for 10 hours or more.
(7) After the mixed liquid is basically solidified, removing the gravity weight 7, the steel plate 6 and the pressing plate 3, taking out the multilayer interlocking structure fabric 1, removing the bearing plate 2 and drawing out all the core rods 4. Drying at 70 deg.C for more than 10 hr.
Example one
4L (2+1) type epoxy resin/UHMWPE hollow honeycomb composite board:
1. production of multilayer interlocking structural fabric 1
Warp yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Weft yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Single-layer organization: plain weave
Single layer warp density: 12 roots/cm
Single layer weft density: 12 roots/cm
Layer number: 4 layers of
Weaving machine: electronic dobby loom
Drafting: 8 heald and smooth
Reeding: no. 6 reed (i.e. 6 teeth/cm gauge) with 8 reeds inserted.
Drawing a card: as shown in fig. 6.
2. Die pressing composite
The method is as described above. The side length of the broken line of the pressure bearing plate 2 and the pressure applying plate 3 is 6.5mm, and the side length of the square section of the steel bar used by the core rod 4 is 5 mm.
3. epoxy/UHMWPE hollow honeycomb composite panel structure, as shown in fig. 5.
Example two
6L (3+2) type epoxy resin/UHMWPE hollow honeycomb composite board:
1. production of multilayer interlocking structural fabric 1
Warp yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Weft yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Single-layer organization: plain weave
Single layer warp density: 12 roots/cm
Single layer weft density: 12 roots/cm
Layer number: 6 layers of
Weaving machine: electronic dobby loom
Drafting: 12 heald and straight-through
Reeding: no. 6 reed (i.e. 6 tines/cm gauge reed), each reed 12 penetrates.
Drawing a card: as shown in fig. 8.
2. Die pressing composite
The method is as described above. The side length of the broken line of the pressure bearing plate 2 and the pressure applying plate 3 is 6.5mm, and the side length of the square section of the steel bar used by the core rod 4 is 5 mm.
3. epoxy/UHMWPE hollow honeycomb composite panel structure, as shown in fig. 7.
EXAMPLE III
8L (4+3) type epoxy resin/UHMWPE hollow honeycomb composite board:
1. production of multilayer interlocking structural fabric 1
Warp yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Weft yarn: 2/448.5dtex (13 Ne/2) UHMWPE short fiber yarn A
Single-layer organization: plain weave
Single layer warp density: 12 roots/cm
Single layer weft density: 12 roots/cm
Layer number: 8 layers of
Weaving machine: electronic dobby loom
Drafting: 16 healds, run in the same direction
Reeding: no. 6 reed (i.e. 6 tines/cm gauge) with each reed 16 threaded.
Drawing a card: as shown in fig. 10.
2. Die pressing composite
The method is as described above. The side length of the broken line of the pressure bearing plate 2 and the pressure applying plate 3 is 6.5mm, and the side length of the square section of the steel bar used by the core rod 4 is 5 mm.
3. epoxy/UHMWPE hollow honeycomb composite panel structure, as shown in fig. 9.
EXAMPLES one TO THREE PROPERTIES OF THE EPOXY RESIN/UHMWPE HOLLOW CELLULOSE COMPOSITE PLATE STRUCTURE
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. An epoxy resin/UHMWPE hollow honeycomb composite board is characterized in that: the composite board comprises a multilayer interlocking structure fabric, wherein the multilayer interlocking structure fabric is made of UHMWPE, the surface of the multilayer interlocking structure fabric is coated with thermosetting epoxy resin, and the epoxy resin/UHMWPE hollow honeycomb composite board is in a hollow diamond honeycomb shape.
2. A method for making an epoxy/UHMWPE hollow honeycomb composite panel according to claim 1, comprising:
(1) taking UHMWPE short fiber yarns as warp yarns and weft yarns, and adopting a method of continuously replacing the interwoven layers by a plurality of groups of warp yarns to manufacture a multilayer interlocking structure fabric;
(2) the multilayer interlocking structure fabric is taken as a composite material reinforcement, is immersed in mixed liquid, and is manufactured into the right-angle diamond hollow honeycomb epoxy resin/UHMWPE hollow honeycomb composite board by adopting a method of inserting a core rod and compression molding.
3. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 2, characterized in that: and (3) before the multilayer interlocking structure fabric in the step (2) is immersed in the mixed solution, soaking for 4 hours by using acetone, taking out and squeezing, washing by using deionized water, and drying for 1 hour in a drying oven at the temperature of 70 ℃.
4. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 2, characterized in that the method for preparing the mixed solution in the step (2) is as follows: taking thermosetting epoxy resin and a curing agent, preparing a mixed solution according to the mass ratio of the thermosetting epoxy resin to the curing agent of 3:1, fully stirring, and standing for 5-8 min until defoaming.
5. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 2, wherein the compression molding method in the step (2) comprises the following steps:
(1) adjusting the horizontal position of a test platform, placing a bearing plate on the test platform, and coating a layer of separation oil agent or a layer of preservative film on the upper surface of the bearing plate;
(2) putting the multilayer interlocking structure fabric into a container filled with the mixed solution for soaking, and quickly and repeatedly stirring by using a glass rod to ensure that the mixed solution fully permeates into the multilayer interlocking structure fabric;
(3) taking out the multilayer interlocking structure fabric, and quickly cutting a core rod in each hole of the multilayer interlocking structure fabric;
(4) placing the multilayer interlocking structure fabric above the pressure bearing plate, and enabling each vertex below the multilayer interlocking structure fabric to be clamped into the corresponding groove vertex of the pressure bearing plate in an aligned mode;
(5) coating a layer of separation oiling agent or a layer of preservative film on the lower surface of a pressing plate, placing the pressing plate above the multilayer interlocking structure fabric, and enabling one surface of the pressing plate coated with the separation oiling agent or the preservative film to be in contact with the multilayer interlocking structure fabric, wherein at the moment, all vertexes above the multilayer interlocking structure fabric are aligned and clamped into corresponding groove vertexes of the pressing plate;
(6) a steel plate is placed above the pressure applying plate, and a gravity weight is placed above the steel plate and is pressurized;
(7) and after the mixed solution is basically cured, sequentially removing the gravity weight, the steel plate and the pressing plate, taking out the multilayer interlocking structure fabric containing the core rod, removing the bearing plate, then drawing out all the core rods, and drying to obtain the epoxy resin/UHMWPE hollow honeycomb composite plate.
6. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 5, characterized in that: and (3) the soaking and stirring time in the step (2) is less than 10 min.
7. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 5, characterized in that: and (3) quickly inserting a core rod into each hole of the multilayer interlocking structure fabric in the step (3), and adjusting the angle of the core rod to enable the top point of the core rod to be matched with the layer-changing boundary point of the multilayer interlocking structure fabric.
8. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 5, characterized in that: in the step (6), the weight is 40kg, and the pressurizing time is more than or equal to 10 h.
9. The method for manufacturing the epoxy resin/UHMWPE hollow honeycomb composite board according to claim 5, characterized in that: and (4) drying at the temperature of 70 ℃ for 10 hours or more in the step (7).
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