CN107011648A - A kind of Kevlar fiber cloths enhancing polyureas based composites and preparation method thereof - Google Patents
A kind of Kevlar fiber cloths enhancing polyureas based composites and preparation method thereof Download PDFInfo
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- CN107011648A CN107011648A CN201710404555.6A CN201710404555A CN107011648A CN 107011648 A CN107011648 A CN 107011648A CN 201710404555 A CN201710404555 A CN 201710404555A CN 107011648 A CN107011648 A CN 107011648A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/02—Polyureas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
-
- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Reinforced Plastic Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
A kind of Kevlar fiber cloths enhancing polyureas based composites and preparation method thereof, it is related to a kind of Kevlar fiber cloths enhancing polyureas based composites and preparation method thereof.The present invention is to solve caused by single polyurea elastomer material intensity is relatively low and fiber is laterally extracted during the military service of Kevlar fiber cloths the problem of material failure.Kevlar fiber cloths strengthen polyureas based composites using Kevlar fiber cloths as reinforcement, are combined using polyureas as matrix.First, SPUA is prepared；2nd, fiber cloth cuts and immerses polyureas；3rd, vacuumize；4th, fiber cloth is elaborated；5th, die casting.Fiber cloth enhancing polyureas based composites prepared by the present invention can be used for military domain, such as bulletproof armour backboard, aircraft, guided missile structure material, protective helmet；Civil structural Material Field, such as pipeline, wallboard building structural materials.
Description
Technical field
The present invention relates to a kind of Kevlar fiber cloths enhancing polyureas based composites and preparation method thereof.
Background technology
SPUA has relatively low density and price, the excellent physicochemical property bag of polyureas as a kind of high polymer material
Include high anti-tensile impact strength, pliability, wearability, anti-wet and slippery, ageing-resistant, anticorrosion etc..
In terms of polyurea coating is applied to the anti-explosion of building by air force of U.S. at first, polyureas is applied to height by subsequent USN
Motorized formula vehicle (HMMWV) armour plate outer layer, to mitigate the harm of ballistic debris and bullet.Experimental study shows to gather
Urea layer serves good protection effect, can significantly increase penetration ability of the armour plate to artillery fire and bomb fragments.Polyureas bullet
Glass transition can occur under high speed impact for property body, and the strength modulus of material can improve a lot, while a large amount of energy that dissipated
Amount is so as to reach shellproof purpose, and elastomeric material is often as backboard formation steel plate/ceramics/elastomeric material (German leopard -2, Russia sieve
This T90 tank) bulletproof composite structure.
Polyureas in military ballistic area in addition to having good application prospect, due to its waterproof, anti-corrosion and wear-resisting performance
Also it is widely used in large foundation construction field.Such as pipeline corrosion protection, tunnel water proofing, bridge protection.
High strength fibre mainly includes carbon fiber, glass fibre, aramid fiber, superhigh molecular weight polyethylene fibers etc..This
A little fibers are widely used in civil, military field due to its superhigh intensity and modulus.Fibre-reinforced polymer matrix composite
Also due to its excellent performance and be widely used.
Fibre reinforced composites have the performance better than pure fiber and matrix.First, matrix can be kept in impact
Fiber is constant to position and direction, and the stress that can disperse between fiber；Secondly, the presence of matrix can be played to fiber
Protective effect, it is to avoid the reduction of fibre property is caused by environmental factor, such as pure fiber impact resistance under high humidity conditions
Reduction and the decline of mechanical property caused by ultraviolet radiation light degradation；Layering is also a kind of energy absorption caused by matrix breakdown
Mechanism.The aramid fabric of dipping has the preferably anti-intrusion performance of dynamic.As lightweight bulletproof or during soft armor, fiber
With the relatively low adhesive force of matrix fiber can be made to obtain bigger deformation, so as to absorb more impact energys.
Fiber cloth strengthens polyureas base composite material laminated plate set fiber and the common advantage of SPUA, passes through
The design of different laying and fiber volume fractions, can obtain high-strength, high tenacity, low-density, corrosion-resistant, waterproof and
Especially anti-body invades the fiber cloth enhancing polyureas base composite material laminated plate for cutting performance.It can be used for large foundation construction field,
Such as pipeline corrosion protection, tunnel water proofing, bridge protection, house are explosion-proof；It can be used for civil protective field, such as helmet, knee-pad are protected
Tool；It can be also used for military field, such as flak jackets, armour, aircaft configuration field.
The content of the invention
The present invention is to solve single polyurea elastomer material intensity is relatively low and fiber is horizontal during the military service of Kevlar fiber cloths
To caused by extracting the problem of material failure, and provide a kind of Kevlar fiber cloths enhancing polyureas based composites and its preparation side
Method.
A kind of Kevlar fiber cloths enhancing polyureas based composites are, using Kevlar fiber cloths as reinforcement, to be made with polyureas
It is combined for matrix, wherein the percentage by volume of fiber cloth is 50%~90%；The material of the fiber cloth is natural fiber
Or chemical fibre；The polyureas is prepared from by diisocyanate and diamine.
A kind of preparation method of Kevlar fiber cloths enhancing polyureas based composites is completed according to the following steps：
First, diamine is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free, obtain
To reaction solution A；Diisocyanate is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free,
Obtain reaction solution B；
2nd, reaction solution A and reaction solution B is mixed, stirs 2~10min, obtain SPUA；Two in the reaction solution A
The mol ratio of first amine and diisocyanate in reaction solution B is 1:(0.8~1.2)；
3rd, Kevlar fiber cloths are immersed in SPUA, vacuumizes 2~10min, obtain being soaked with the Kevlar of polyureas
Fiber cloth；
4th, the Kevlar fiber cloths for being soaked with polyureas are successively elaborated in mould, under normal pressure or vacuum atmosphere, used
Forcing press applies pressure to the Kevlar fiber cloths for being soaked with polyureas of the superiors, when pressure increases to 10~100kN, in pressure
For 0.1~2h of pressurize under 10~100kN, the demoulding obtains Kevlar fiber cloths enhancing polyureas based composites after polyureas solidification.
Advantage of the present invention：
Preparation technology of the present invention is simple, without heating, the characteristics of material of gained has high intensity, high tenacity.It is stretched
Intensity up to 100~800MPa, under arms during, because polyureas is well combined with fiber, fiber is difficult to occur laterally to extract
And fail.
Brief description of the drawings
Fig. 1 is that the laminate that the Kevlar fiber cloths enhancing polyureas based composites obtained using embodiment one are made shines
Piece；
Fig. 2 is that the Kevlar fiber cloths that embodiment one is obtained strengthen the low power microscopic appearance figure of polyureas based composites；
Fig. 3 is that the Kevlar fiber cloths that embodiment one is obtained strengthen the high power microscopic appearance figure of polyureas based composites；
Fig. 4 is the decomposition texture schematic diagram of the mould；
Fig. 5 is the structural representation of the bottom with holes.
Embodiment
Embodiment one：A kind of Kevlar fiber cloths enhancing polyureas based composites of present embodiment are with Kevlar
Fiber cloth is combined as reinforcement using polyureas as matrix, and wherein the percentage by volume of fiber cloth is 50%~90%；Institute
The material for stating fiber cloth is natural fiber or chemical fibre；The polyureas is prepared from by diisocyanate and diamine.
It is single in the complete or partial infiltrated fiber beam of polyureas in fiber and polyureas good combination, material in present embodiment
In fiber.
Embodiment two：Present embodiment from unlike embodiment one：The Kevlar fiber cloths
Form be woven cloth and unidirectional cloth in one or two kinds of mixing.Other are identical with embodiment one.
Embodiment three：Present embodiment from unlike embodiment one or two：The diamine and two
The mol ratio of isocyanates is 1:(0.8~1.2).Other are identical with embodiment one or two.
Embodiment four：Unlike one of present embodiment and embodiment one to three：The diamine
Mol ratio with diisocyanate is 1:1.Other are identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：Two isocyanide
Acid esters is toluene di-isocyanate(TDI), diphenyl methane -4,4 ' in-diisocyanate and modified diphenylmethane diisocyanate
A kind of or wherein several mixture.Other are identical with one of embodiment one to four.
Embodiment six：Unlike one of present embodiment and embodiment one to five：The diamine
For in poly- 1,4- butanediols double (PABA esters), Amino End Group PPOX ether and Amino End Group polyethylene glycol oxide ether
A kind of or wherein several mixture, when diamine is mixture, its molecular weight is 230~5000.Other and specific embodiment party
One of formula one to five is identical.
Embodiment seven：A kind of Kevlar fiber cloths of present embodiment strengthen the preparation method of polyureas based composites
Complete according to the following steps：
First, diamine is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free, obtain
To reaction solution A；Diisocyanate is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free,
Obtain reaction solution B；
2nd, reaction solution A and reaction solution B is mixed, stirs 2~10min, obtain SPUA；Two in the reaction solution A
The mol ratio of first amine and diisocyanate in reaction solution B is 1:(0.8~1.2)；
3rd, Kevlar fiber cloths are immersed in SPUA, vacuumizes 2~10min, obtain being soaked with the Kevlar of polyureas
Fiber cloth；
4th, the Kevlar fiber cloths for being soaked with polyureas are successively elaborated in mould, under normal pressure or vacuum atmosphere, used
Forcing press applies pressure to the Kevlar fiber cloths for being soaked with polyureas of the superiors, when pressure increases to 10~100kN, in pressure
For 0.1~2h of pressurize under 10~100kN, the demoulding obtains Kevlar fiber cloths enhancing polyureas based composites after polyureas solidification.
The vacuum vacuumized described in present embodiment step 3 is below 1000Pa.
Embodiment eight：Present embodiment from unlike embodiment seven：Two isocyanide described in step one
Acid esters is toluene di-isocyanate(TDI), diphenyl methane -4,4 ' in-diisocyanate and modified diphenylmethane diisocyanate
A kind of or wherein several mixture.Other are identical with embodiment seven.
Embodiment nine：Present embodiment from unlike embodiment seven or eight：The diamine is poly-
1,4- butanediols double (PABA esters), Amino End Group PPOX ether and one kind in Amino End Group polyethylene glycol oxide ether or
Wherein several mixtures, when diamine is mixture, its molecular weight is 230~5000.Other with embodiment seven or
Eight is identical.
Embodiment ten：Unlike one of present embodiment and embodiment seven to nine：Institute in step 4
It is [0 °/22.5 °] to state the mode successively elaboratednLaying, [0 °/45 °]nLaying, [0 °/67.5 °]nLaying, [0 °/90 °]nLaying,
[0°/30°]nLaying, [0 °/60 °]nLaying, [- 30 °/30 °]nLaying, [- 60 °/60 °]nLaying, [0 °/22.5 °/45 °/
67.5°/90°]nLaying and [0 °/45 °/90 °/135 °]nOne kind or wherein several combinations in laying.Other and specific implementation
One of mode seven to nine is identical.
Embodiment 11：Unlike one of present embodiment and embodiment seven to ten：In step 4
The mould is made up of seaming chuck 1, die main body 2 and bottom 3 with holes；Through hole is provided with the middle of the die main body 2, it is described with holes
Bottom 3 is arranged on the side of through hole, and the seaming chuck 1 is pressed into from opposite side, the bottom 3 with holes and the mistake of die main body 2
It is full of connection, Interference size is 0.01mm~1mm.Other are identical with one of embodiment seven to ten.
Embodiment 12：Present embodiment from unlike embodiment seven to one of 11：Step 2
Described in reaction solution A the mol ratio of diamine and diisocyanate in reaction solution B be 1:1.Other and embodiment seven
It is identical to one of 11.
Beneficial effects of the present invention are verified using following examples：
Embodiment one：A kind of preparation method of Kevlar fiber cloths enhancing polyureas based composites is to complete according to the following steps
's：
First, diamine is placed in reaction bulb, vacuum be below 10Pa magnetic agitations 3h to bubble-free, reacted
Liquid A；Diisocyanate is placed in reaction bulb, vacuum be below 10Pa magnetic agitations 3h to bubble-free, obtain reaction solution
B；The mol ratio of the diamine and diisocyanate is 1；
2nd, reaction solution A and reaction solution B is mixed, stirs 3min, obtain SPUA；
3rd, Kevlar textile sheets are immersed in SPUA, vacuumizes 3min, obtain being soaked with the Kevlar of polyureas
Fiber cloth；
4th, the Kevlar fiber cloths for being soaked with polyureas are elaborated in mould with [0 °] n ply sequences, under normal pressure atmosphere,
Pressure is applied to the Kevlar fiber cloths for being soaked with polyureas of the superiors using forcing press, when pressure increases to 50kN, in pressure
For pressurize 1h under 50kN, the demoulding obtains Kevlar fiber cloths enhancing polyureas based composites after polyureas solidification.
Fig. 1 is that the laminate that the Kevlar fiber cloths enhancing polyureas based composites obtained using embodiment one are made shines
Piece；Fig. 2 is that the Kevlar fiber cloths that embodiment one is obtained strengthen the low power microscopic appearance figure of polyureas based composites；Fig. 3 is real
Apply the high power microscopic appearance figure for the Kevlar fiber cloths enhancing polyureas based composites that example one is obtained.As can be seen from Figures 2 and 3
Laminar composite is fine and close, and fibre single thread is well combined with polyureas.
Claims (10)
1. a kind of Kevlar fiber cloths strengthen polyureas based composites, it is characterised in that a kind of Kevlar fiber cloths strengthen polyureas base
Composite is, using Kevlar fiber cloths as reinforcement, to be combined using polyureas as matrix, wherein the volume hundred of fiber cloth
Fraction is 50%~90%；The material of the fiber cloth is natural fiber or chemical fibre；The polyureas is by diisocyanate
It is prepared from diamine.
2. a kind of Kevlar fiber cloths enhancing polyureas based composites according to claim 1, it is characterised in that described
The form of Kevlar fiber cloths be woven cloth and unidirectional cloth in one or two kinds of mixing.
3. a kind of Kevlar fiber cloths enhancing polyureas based composites according to claim 1, it is characterised in that described two
The mol ratio of first amine and diisocyanate is 1:(0.8~1.2).
4. a kind of Kevlar fiber cloths enhancing polyureas based composites according to claim 1, it is characterised in that described two
Isocyanates is toluene di-isocyanate(TDI), diphenyl methane -4,4 '-diisocyanate and modified diphenylmethane diisocyanate
In one kind or wherein several mixtures.
5. a kind of Kevlar fiber cloths enhancing polyureas based composites according to claim 1, it is characterised in that described two
First amine is poly- 1,4- butanediols double (PABA esters), Amino End Group PPOX ether and Amino End Group polyethylene glycol oxide ether
In one kind or wherein several mixtures, when diamine is mixture, its molecular weight is 230~5000.
6. a kind of Kevlar fiber cloths as claimed in claim 1 strengthen the preparation method of polyureas based composites, its feature exists
The preparation method for strengthening polyureas based composites in Kevlar fiber cloths is completed according to the following steps：
First, diamine is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free, obtain anti-
Answer liquid A；Diisocyanate is placed in reaction bulb, vacuum be below 100Pa magnetic agitations 1h~6h to bubble-free, obtain
Reaction solution B；
2nd, reaction solution A and reaction solution B is mixed, stirs 2~10min, obtain SPUA；Diamine in the reaction solution A
Mol ratio with diisocyanate in reaction solution B is 1:(0.8~1.2)；
3rd, Kevlar fiber cloths are immersed in SPUA, vacuumizes 2~10min, obtain being soaked with the Kevlar fibers of polyureas
Cloth；
4th, the Kevlar fiber cloths for being soaked with polyureas are successively elaborated in mould, under normal pressure or vacuum atmosphere, uses pressure
Machine applies pressure to the Kevlar fiber cloths for being soaked with polyureas of the superiors, when pressure increases to 10~100kN, is 10 in pressure
0.1~2h of pressurize under~100kN, the demoulding obtains Kevlar fiber cloths enhancing polyureas based composites after polyureas solidification.
7. a kind of Kevlar fiber cloths according to claim 6 strengthen the preparation method of polyureas based composites, its feature
It is toluene di-isocyanate(TDI), diphenyl methane -4,4 to be diisocyanate described in step one '-diisocyanate and modified two
One kind or wherein several mixtures in methylenebis phenyl isocyanate.
8. a kind of Kevlar fiber cloths according to claim 6 strengthen the preparation method of polyureas based composites, its feature
It is that the diamine is poly- for poly- 1,4- butanediols double (PABA esters), Amino End Group PPOX ether and Amino End Group
One kind or wherein several mixtures in ethylene oxide ether, when diamine is mixture, its molecular weight is 230~5000.
9. a kind of Kevlar fiber cloths according to claim 6 strengthen the preparation method of polyureas based composites, its feature
It is [0 °/22.5 °] to be the mode successively elaborated described in step 4nLaying, [0 °/45 °]nLaying, [0 °/67.5 °]nLaying,
[0°/90°]nLaying, [0 °/30 °]nLaying, [0 °/60 °]nLaying, [- 30 °/30 °]nLaying, [- 60 °/60 °]nLaying, [0 °/
22.5°/45°/67.5°/90°]nLaying and [0 °/45 °/90 °/135 °]nOne kind or wherein several combinations in laying.
10. a kind of Kevlar fiber cloths according to claim 6 strengthen the preparation method of polyureas based composites, its feature
It is that mould described in step 4 is made up of seaming chuck (1), die main body (2) and bottom (3) with holes；The die main body (2)
Centre is provided with through hole, and the bottom (3) with holes is arranged on the side of through hole, and the seaming chuck (1) is pressed into from opposite side, the band
Hole bottom (3) is connected with the die main body (2) interference, and Interference size is 0.01mm~1mm.
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| CN201710404555.6A CN107011648B (en) | 2017-06-01 | 2017-06-01 | Kevlar fiber cloth reinforced polyurea composite material and preparation method thereof |
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Cited By (5)
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| CN110822998A (en) * | 2018-08-14 | 2020-02-21 | 郭骏 | Method for protecting equipment or equipment parts |
| CN111256536A (en) * | 2020-02-28 | 2020-06-09 | 南京航空航天大学 | Penetration cutting wire laying reinforced plane integral breaking type frangible cover and preparation method thereof |
| CN113480840A (en) * | 2021-07-09 | 2021-10-08 | 成都上泰科技有限公司 | Method for manufacturing high-performance polyurea composite material containing reinforced fiber cloth |
| CN113831822A (en) * | 2021-07-09 | 2021-12-24 | 成都上泰科技有限公司 | Method for manufacturing high-performance polyurea composite material |
| CN115406307A (en) * | 2022-07-11 | 2022-11-29 | 东华大学 | Bulletproof flashboard based on oxide filament reinforced ceramic composite material and preparation method |
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