CN107080316A - A kind of magnesium alloy helmet of use Honeycomb muscle - Google Patents
A kind of magnesium alloy helmet of use Honeycomb muscle Download PDFInfo
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- CN107080316A CN107080316A CN201710428356.9A CN201710428356A CN107080316A CN 107080316 A CN107080316 A CN 107080316A CN 201710428356 A CN201710428356 A CN 201710428356A CN 107080316 A CN107080316 A CN 107080316A
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- helmet
- honeycomb
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- magnesium alloy
- cloth
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
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Abstract
The invention provides a kind of helmet, including：Inside and outside have honeycomb magnesium alloy helmet skeleton；It is filled in the interior aerogel layer in the honeycomb of inner side；It is filled in the outer aerogel layer in the honeycomb of outside；It is arranged on the scrim cloth on outer aerogel layer surface；It is arranged on the refractory layer of carbon cloth layer surface.The present invention prepares fire hat by the way of the multiple material composite shock-absorbing such as magnesium alloy, aeroge, fiber cloth, and magnesium alloy has higher specific strength, low elastic modulus, impact property, is used as main shock resistance structure；Moreover, magnesium alloy skeleton of the present invention using honeycomb, greatly mitigates the weight of helmet skeleton on the basis of with excellent impact resistance.The present invention makes the helmet have good barrier propterty on the basis of helmet weight is mitigated, compared with the fire hat of phenolic fiberglass reinforced plastics material, can more effectively protect human body, reduces the injury that human body is subject in scene of fire, and helmet light weight, wears conveniently.
Description
Technical field
The present invention relates to helmet technical field, more particularly to a kind of magnesium alloy helmet of use Honeycomb muscle.
Background technology
In fire attack and rescue, the head of fireman often by the heat from the scene of a fire, cigarette, poison, radiation,
The injury of electric shock, external impacts etc..Fire hat can carry out integral protection to the head of fireman.Fire field environment is to fireman
Head injury generally can be divided into thermal environment injury, mechanical external force injury and electricity leakage injury, and mechanical external force injury includes object
Strike, high falling etc..
There are some researches show, helmet-head-neck system is nonlinear, and its response is also nonlinear, when active force increases,
Neck stress, helmet-head relative displacement and all non-linear increase of head acceleration.The helmet is hit by harder thing block, and it is rushed
Hit power action time shorter.Rammer rigidity and hardness are smaller, and the impact force action time is longer.Same size impacts masterpiece
For helmet top, action time is longer, and helmet-head relative displacement is big, but neck stress and head acceleration are just small.Suspension stiffness is got over
Greatly, buffer capacity is poorer, and the power for passing to neck is bigger, cushioning effect is not had completely, head acceleration is also with rigidity
Become big and increase.Helmet-head relative displacement then reduces as rigidity becomes big.The big people of head quality, helmet-head relative displacement is just big,
Neck stress diminishes, i.e. the big people of head quality can bear higher impact force.The big people of neck rigidity, passes to the power of neck
Greatly, and head acceleration is varied less, i.e., neck it is thick people confrontation cerebral concussion it is not favourable.
Based on above principle, the shock resistance of fire hat design should be noted it is following some：1. helmet cap shell will have enough
Intensity can directly stop alluvium, it is pierced through cap shell, and head is arrived in directly impact.2. helmet shell material will be as far as possible using thick
And light material.3. to make suspension arrangement constitute energy absorber system with helmet top locus overhead, impact peak value is reduced.4.
In the case of helmet shape and other accessory structure identicals, the number of plies of cushion be influence head impact load to absorb it is most important because
Element, the number of plies is more, more can effectively absorb and impact brought energy., in the case of buffer layer structure is identical and rational
Increase its number of plies as far as possible.5. hat holder group constitutes energy absorber system with to have cushion at head contact and leave certain space,
And prevent cranial bone deformation.
With the development of science and technology, the protection and adaptability of the old-fashioned helmet have not adapted to wanting for modern fire work
Ask.Therefore, many countries have developed new-type composite helmet and making process thereof.It is domestic in terms of preparing fire hat using composite at present
There is relevant report outside：Such as Chinese patent, Application No. 201420077866.8, entitled " a kind of antidetonation fire hat "
Antidetonation fire hat is reported, the helmet body is from the outside to the core successively by flame-retardant layer, hard protection layer, internal layer cushion, the helmet
Inner liner is constituted.Chinese patent, Application No. 201410114098.3, entitled " improved fire hat " reports one
Improved fire hat is planted, including helmet shell, lanyard, chin belt, shield are draped over one's shoulders, head circumference adjusting button, it is characterized in that being provided with three in helmet shell
Level damping and bidirectional adjustment mechanism, governor motion are connected and are installed in helmet shell each other with damping.Chinese patent, Shen
Please number be 201120172779.7, entitled " a kind of Novel fire fighting helmet " reports a kind of Novel fire fighting helmet, the helmet
Shell is made of the polyester fiber for possessing flame retardant effect and ultraviolet resistance stabilization, overall to be coloured with fluorescer；Mask position
In helmet shell forward position bottom, it is connected at rear portion with damping net, meanwhile, it is additionally provided with shock absorber part to coordinate on the top of damping net
Damping net carries out head protection；Under helmet shell, a protection tippet is additionally provided with, protection tippet is combined by fire-retardant radioresistance
Material manufacture, can be fixed in the helmet with snap-fastener or velcro；Meanwhile, headband, and head are provided with helmet shell
Take and be provided with sliding damper and headband adjuster.Chinese patent, application number 201220010689.2, entitled " head
Portion's safeguard structure " discloses a kind of cephalic protection structure, including cap body, with extexine, is set inside extexine into there is inner liner,
Accommodation space is formed between the extexine and inner liner.
Existing fire hat design is processed into helmet helmet body using materials such as phenolic resin frp, polyester fibers mostly
Use.There is overweight problem in this kind of helmet, long periods of wear can cause compressing to human cervical spine, but if reducing making for phenolic resin
With the decline of helmet intensity can be caused.
The content of the invention
In view of this, it is an object of the invention to provide a kind of helmet, the helmet that the present invention is provided is to use Honeycomb
The magnesium alloy helmet of muscle, has good shock resistance on the basis of lighter in weight.
The invention provides a kind of magnesium alloy helmet of use Honeycomb muscle, including：
Magnesium alloy helmet skeleton with honeycomb；
It is filled in the aerogel layer in honeycomb；
It is arranged on the scrim cloth on aerogel layer surface；
It is arranged on the refractory layer on scrim cloth surface.
It is preferred that, the honeycomb is arranged on the inner side and/or outside of magnesium alloy helmet skeleton.
It is preferred that, the honeycomb is formed by several regular hexagon cells.
It is preferred that, the wall thickness of the regular hexagon cell is S, 0 ＜ S≤4mm.
It is preferred that, the wall a height of H, 0 ＜ H≤40mm of the regular hexagon cell.
It is preferred that, the helmet includes：
Inside and outside have honeycomb magnesium alloy helmet skeleton；
It is filled in the interior aerogel layer in the honeycomb of inner side；
It is filled in the outer aerogel layer in the honeycomb of outside；
It is arranged on the scrim cloth on outer aerogel layer surface；
It is arranged on the refractory layer on scrim cloth surface.
It is preferred that, the aerogel layer, including interior aerogel layer and outer aerogel layer material independently selected from silicon airsetting
Glue, carbon aerogels, sulphur aeroge or metal oxide aerogel.
It is preferred that, the scrim cloth is formed by 1~5 layer of fiber cloth.
It is preferred that, the scrim cloth include carbon cloth, glass fabric, Kafra fiber cloth, ceramic fiber cloth and
One or more in rock wool fibers cloth.
It is preferred that, the composition of the refractory layer includes：
Alumino-silicate, boron carbide, rare earth luminous powder and aeroge.
It is preferred that, the alumino-silicate, boron carbide, the mass ratio of rare earth luminous powder and aeroge are A：B：C：D；
0 ＜ A≤70,0 ＜ B≤30,0 ＜ C≤20,0 ＜ D≤50.
It is preferred that, the thickness of the refractory layer is 0.3~2mm.
Compared with prior art, it is remote using intensity the invention provides a kind of magnesium alloy helmet of use Honeycomb muscle
Higher than phenolic fiberglass reinforced plastics magnesium alloy as helmet skeleton, magnesium alloy has higher specific strength, low elastic modulus, impact resistance
Can good characteristic, but if using magnesium alloy helmet body as shock resistance structure merely, exist helmet body wall thicker than thickness, helmet body compared with
The problem of weight, if helmet body wall thickness is relatively thin, shock resistance is inadequate；The present invention is using the magnesium alloy bone with honeycomb
Frame, makes helmet skeleton lighter in the case where ensureing excellent impact resistance energy, on the basis of helmet weight is mitigated, so as to get
The helmet has good barrier propterty.The present invention is by the way of the multiple material composite shock-absorbing such as magnesium alloy, fiber cloth, aeroge
Novel headpiece is prepared, this helmet shell is used as fire hat, compared with the fire hat of phenolic fiberglass reinforced plastics material, Neng Gougeng
It is effectively protected human body, reduces the injury that human body is subject in scene of fire, and helmet light weight, wears conveniently.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the structural representation of helmet skeleton provided in an embodiment of the present invention；
Fig. 2 is the structural representation of aerogel layer provided in an embodiment of the present invention；
Fig. 3 is the structural representation of fire hat provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The invention provides a kind of helmet, including：
Magnesium alloy helmet skeleton with honeycomb；
It is filled in the aerogel layer in honeycomb；
It is arranged on the scrim cloth on aerogel layer surface；
It is arranged on the refractory layer on scrim cloth surface.
In the present invention, the honeycomb can be arranged on the outside of magnesium alloy helmet skeleton, can also be arranged on interior
Side, can also simultaneously be set inside and outside.In the present invention, it is filled in the gas in honeycomb on the outside of magnesium alloy helmet skeleton
Gel layer is designated as outer aerogel layer, is filled in the aerogel layer on the inside of magnesium alloy helmet skeleton in honeycomb and is designated as interior aeroge
Layer.In the present invention, if scrim cloth can both be arranged on interior aerogel layer surface, outer aerogel layer table can also be arranged on
Face, interior aerogel layer and outer aerogel layer surface can also be arranged on simultaneously, be arranged on the scrim cloth on outer aerogel layer surface
Outer fiber layer of cloth is designated as, the scrim cloth for being arranged on interior aerogel layer surface is designated as interior scrim cloth.In the present invention, it is described resistance to
Thermosphere can both be arranged on outer fiber cloth layer surface, can also be arranged on interior scrim cloth surface, be preferably provided at outer fiber cloth
Layer surface.
The helmet that the present invention is provided can be as fire hat, and the fire hat is preferably included：
Inside and outside have honeycomb magnesium alloy helmet skeleton；
It is filled in the interior aerogel layer in the honeycomb of inner side；
It is filled in the outer aerogel layer in the honeycomb of outside；
It is arranged on the scrim cloth on outer aerogel layer surface；
It is arranged on the refractory layer on scrim cloth surface.
In the present invention, the material of the helmet skeleton is magnesium alloy, species and source of the present invention to the magnesium alloy
There is no special limitation, the magnesium alloy of composition or the trade mark is known using those skilled in the art, can be bought and obtained by market.
In the present invention, the structure of the helmet skeleton is preferably as shown in figure 1, Fig. 1 is helmet skeleton provided in an embodiment of the present invention
Structural representation；The helmet skeleton includes helmet profile muscle, is arranged on honeycomb on the inside of helmet profile muscle and is arranged on
Honeycomb on the outside of helmet profile muscle；Or the helmet skeleton includes headpiece case, is arranged on headpiece case inner surface
Honeycomb and the honeycomb for being arranged on headpiece case outer surface；Present invention preferably employs helmet profile muscle further to reduce
The weight of helmet skeleton.In the present invention, the thickness of the helmet profile muscle or the thickness of headpiece case are (in Fig. 1 shown in M
Distance) it is preferably 1~6mm, more preferably 2~5mm, most preferably 3~4mm.
The present invention there is no special limitation to the honeycomb, according to it is well known to those skilled in the art have honeycomb or
Cellular design feature is designed.In the present invention, the honeycomb is preferably by several regular hexagon cell shapes
Into.In the present invention, the wall thickness of the regular hexagon cell is preferably S, 0 ＜ S≤4mm；The wall of the regular hexagon cell is high
Preferably H, 0 ＜ H≤40mm.
In the present invention, on the inside of helmet skeleton honeycomb and the honeycomb in outside is preferably by regular hexagon cell
Formed；The size for forming the regular hexagon cell of inner side honeycomb and forming the regular hexagon cell of outside honeycomb can be with
It is identical can also be different.In the present invention, the wall thickness of regular hexagon cell of inner side honeycomb is formed (in Fig. 1 described in S1
Distance) it is preferably S1,0≤S1≤4mm (is not provided with inner side honeycomb) when being 0, more preferably 1~3mm is most preferably
2mm；The wall high (distance in Fig. 1 shown in H1) for forming the regular hexagon cell of inner side honeycomb is preferably H1, and 0≤H1≤
40mm (is not provided with inner side honeycomb) when being 0, more preferably 5~35mm, more preferably 10~30mm, most preferably 15~
25mm；The cornerwise length (distance in Fig. 1 shown in L1) for forming the regular hexagon cell of inner side honeycomb is preferably 5~
50mm, more preferably 10~45mm, more preferably 15~40mm, most preferably 20~30mm；L1 length determines the big of cell
It is small.
In the present invention, the wall thickness (distance in Fig. 1 described in S2) for forming the regular hexagon cell of outside honeycomb is excellent
Elect S2 as, 0≤S2≤4mm (is not provided with outside honeycomb) when being 0, more preferably 1~3mm, most preferably 2mm；Formed
The wall of the regular hexagon cell of outside honeycomb high (distance in Fig. 1 shown in H2) is preferably H2, and 0≤H2≤6mm is (when being 0
It is not provided with outside honeycomb), more preferably 2~4mm, most preferably 3mm；Form the regular hexagon hole of outside honeycomb
Cornerwise length (distance in Fig. 1 shown in L2) of lattice is preferably 5~50mm, more preferably 10~45mm, more preferably 15
~40mm, most preferably 20~30mm；L2 length determines the size of cell.
In the present invention, it is 0 when S1 is different with S2；It is 0 when H1 is different with H2.
The present invention does not have special limitation to the preparation method of the helmet skeleton, using well known to those skilled in the art
Magnesium alloy molded technical scheme using the method for integral die-cast as directly prepared.
In the present invention, it is filled in the aeroge on the inside of helmet skeleton in honeycomb and is designated as interior aerogel layer, is filled in
Aeroge on the outside of helmet skeleton in honeycomb is designated as outer aerogel layer.In the present invention, aeroge is a kind of solid matter
Form, is one of solid of world's upper density very little.Density is 3 kilograms every cubic metre, only the 2.75 of atmospheric density times.Due to
80% above is air in aeroge, with extraordinary effect of heat insulation, thick suitable 20 to the 30 pieces of common glass of aeroge of one-inch
The heat insulating function of glass.Even if aeroge is placed between rose and flame, rose also can be at all lossless.Aeroge is seemingly " weak not
Prohibit wind ", it is in fact very sturdy and durable.It can bear pressure of thousands of times equivalent to sole mass, reach that 1200 take the photograph in temperature
It can just be melted when family name spends.In addition its thermal conductivity and refractive index are also very low, and insulating capacity is also more eager to excel in whatever one does by 39 than best glass fibre
Times.
In the present invention, the airsetting layer includes outer aerogel layer and/or the material of interior aerogel layer is preferably selected from silicon gas
Gel, carbon aerogels, sulphur aeroge or metal oxide aerogel, the present invention originate without special limitation to aeroge,
It can be bought and obtained by market, can also prepared using method well known to those skilled in the art.In the present invention, the interior gas
Gel layer and outer aerogel layer can use the aeroge of phase same material, it would however also be possible to employ the aeroge of unlike material.In this hair
In bright, the aeroge of material of the same race can be filled in the different regular hexagon cells in honeycomb, different materials can also be filled
The aeroge of matter.
The present invention does not have special limitation, those skilled in the art to the structure of the interior aerogel layer and outer aerogel layer
Aeroge is filled into honeycomb according to actual conditions.In the present invention, the interior aerogel layer and outer aeroge
The structure of layer is preferably as shown in Fig. 2 Fig. 2 is the structural representation of aerogel layer in the embodiment of the present invention, and the aerogel layer is
Surface with positive six prismsby aeroge pad, the size and dimension (bottom surface hexagonal shape, prism heights) of positive six prismsby and
Regular hexagon cell shape and size (diagonal distance is high with wall) are consistent in honeycomb in above-mentioned technical proposal, are preferably able to
Interference fit, makes positive six prismsby and the intact laminating of regular hexagon cell.In the present invention, the Interference size during interference fit
Preferably 0.05~0.5mm, more preferably 0.1~0.4mm, most preferably 0.2~0.3mm.In the present invention, by honeycomb
Helmet helmet body is formed after interior filling aeroge；The aeroge pad is preferably able to fit with helmet helmet body surface face, i.e., interior airsetting
The aeroge pad of glue-line can fit with surface in helmet helmet body, and the aeroge pad of outer aerogel layer can be with helmet helmet body
Outer surface laminating.In the present invention, the height of six prisms is high consistent with the wall of regular hexagon cell in the aerogel layer；With
The thickness of the aeroge pad of six prisms connection is preferably 1~10mm, more preferably 3~7mm, most preferably 5mm.
The present invention does not have special limitation to the preparation method of the aerogel layer, shape needed for being obtained by market purchase
Aerogel layer or by aeroge be cut into needed for shape aerogel layer, also can be according to airsetting well known to those skilled in the art
The preparation method of glue is prepared the aerogel layer of required shape or prepared using mould is cut into required shape after aeroge
The aerogel layer of shape.In the present invention, the preparation method for the aeroge that aerogel layer is used is preferably：
Under hydrochloric acid effect, reaction is hydrolyzed in tetraethyl orthosilicate, deionized water and ethanol, hydrolysate is obtained；
In the presence of ammoniacal liquor, nitrogen nitrogen dimethylformamide and hydrolysate are subjected to polycondensation reaction, alcogel is formed；
Under water bath, the ethanol in alcogel hole, gel after being exchanged are exchanged using n-hexane；
Under water bath, hydrophobic modification is carried out to gel after exchange using the hexane solution of trim,ethylchlorosilane,
It is dried after obtaining light blue transparence gel.
In the present invention, it is preferably 6~8 hours using the time of ethanol in n-hexane exchange alcogel hole.In this hair
In bright, the time of the hydrophobic modification is preferably 12~24 hours.
In the present invention, the scrim cloth is preferably formed by 1~5 layer of fiber cloth, more preferably 2~4 layers, most preferably
For 3 layers.In the present invention, the fiber cloth is preferably selected from carbon cloth, glass fabric, Kafra fiber cloth, ceramic fibre
One or more in cloth and rock wool fibers cloth.In the present invention, scrim cloth can be the formation of same fiber cloth, can also
For the formation of different fiber cloths.The present invention, without special limitation, can be bought by market and be obtained to the source of the fiber cloth.
The present invention does not have special limitation to the preparation method of scrim cloth, in the present invention the preparation method of scrim cloth
Preferably：
Will one or more layers fiber cloth coat glue after be fitted in helmet helmet body (filling aeroge after helmet skeleton be
Helmet helmet body) outer surface, or surfaces externally and internally is while fiber cloth of fitting；
The brushing releasing agent in helmet-shaped mould；
Helmet helmet body is put into after mould, upper/lower die matched moulds pressurized, heated, fiber cloth is bonded in helmet body surface face (with gas
Gel layer is bonded) sizing.
In the present invention, the releasing agent is preferably polytetrafluoroethylene (PTFE).In the present invention, the pressure of the pressurization is preferably
0.5~1.5MPa, more preferably 1MPa.In the present invention, the temperature of the heating is preferably 140~160 DEG C, is most preferably
150℃.In the present invention, the time of pressurized, heated is preferably 2~4 hours.In the present invention, the bottom of the lower mould is preferred
Provided with hole, glue unnecessary in pressure process is set to be flowed out from hole.In the present invention, the glue is preferably epoxy resin
Adhesive.
In the present invention, the composition of the refractory layer is preferably included：Alumino-silicate, boron carbide, rare earth luminous powder and airsetting
Glue.In the present invention, the alumino-silicate is preferably aluminosilicate inorganic high-temp glue, can be bought and obtained by market, can such as used
Double bond refractory inorganic adhesive DR5013, glues well board HN958 inorganic high-temp glue etc..In the present invention, the aluminosilicate inorganic is high
Warm glue is preferably resistant to 1200 DEG C of high temperature.In the present invention, the boron carbide is preferably boron carbide ceramics powder, can be obtained by market purchase
.In the present invention, the rare earth luminous powder can be bought with market and be obtained.In the present invention, the aeroge is preferably airsetting
Glue particle, is aerosil, can be bought and obtained by market, such as Jenner's board or double adjacent board aeroges.
In the present invention, the mass ratio of the alumino-silicate, boron carbide, rare earth luminous powder and aeroge is preferably A：B：C：
D；0 ＜ A≤70,0 ＜ B≤30,0 ＜ C≤20,0 ＜ D≤50；More preferably (10~60)：(10~20)：(5~15)：(10~
40), it is most preferably (20~50)：(14~16)：(8~12)：(20~30).In the present invention, refractory layer can play waterproof,
Anti-electric, high temperature resistant, heat-insulated effect, and rare earth luminescent material can also make fire hat be lighted in the environment of illumination is lacked.
In the present invention, the thickness of the refractory layer is preferably 0.3~2mm, more preferably 0.5~1.5mm, is most preferably
0.8~1.2mm.
In the present invention, the preparation method of the refractory layer is preferably in scrim cloth surface spraying refractory layer slurry.
The magnesium alloy helmet for the use Honeycomb muscle that the present invention is provided, the also referred to as structure of fire hat such as Fig. 3
Shown, Fig. 3 is the structural representation of fire hat provided in an embodiment of the present invention, from outside to inside including refractory layer 1, scrim cloth
2, the helmet skeleton 4 with honeycomb is filled in the outer aerogel layer 3 in the honeycomb of outside, is filled in inner side honeycomb knot
Interior aerogel layer 5 in structure.
The present invention does not have special to the preparation method of the magnesium alloy helmet (fire hat) of the use Honeycomb muscle
Limitation, fills the interior aerogel layer and outer aerogel layer described in above-mentioned technical proposal into helmet skeleton according to the structure of the helmet
Honeycomb in form helmet helmet body, scrim cloth then is compounded in into helmet helmet body surface face, and (inner surface is outer or outer surface, excellent
Elect outer surface as), finally coat refractory layer, the helmet skeleton, inside and outside aerogel layer, fiber cloth on scrim cloth surface
The preparation method of layer and refractory layer is consistent with the method described in above-mentioned technical proposal, will not be repeated here.
Prior art prepares fire hat using materials such as phenolic resin frp, polyester fibers mostly, and this kind of material exists
There is elevated temperature strength reduction and high temperature ageing phenomenon under the extreme condition of the scene of a fire, protective capacities is limited.The helmet that the present invention is provided is
Using the magnesium alloy helmet (fire hat) of Honeycomb muscle, this helmet uses the damping modes that multiple material is combined, subtracted
Heat resistance, the high temperature shock resistance of fire hat are lifted on the basis of weight.Under equal protective capacities, head of the invention
Helmet weighs less than prior art weight；With prior art helmet weight under the same conditions, the protective capacities of the helmet of the present invention is excellent
In the helmet of prior art.
Raw material used in following examples of the present invention is commercial goods.
Embodiment 1
AZ91 magnesium alloy helmet skeletons are integrally prepared using die casting mode, helmet skeleton structure is as shown in figure 1, including the helmet
Thickness of shell is 4mm, and the honeycomb of headpiece case surfaces externally and internally, honeycomb is formed by several regular hexagon cells, interior
The wall thickness of surface honeycomb regular hexagon cell is 1mm (S1), and a height of 10mm of wall (H1), diagonal distance is 10mm (L1)；
Outer surface honeycomb regular hexagon cell wall thickness is 1mm (S2), and a height of 5mm of wall (H2), diagonal distance is 10mm (L2).
Aeroge (the silica nanometer aeroge of Jenner company production) is cut into the aeroge with positive six prismsby
The size interference fit of regular hexagon cell in pad, the size and honeycomb of positive six prismsby, positive six prismsby can be filled out just
It is charged in regular hexagon cell, the thickness of aeroge pad is 10mm.By prepare two aeroges pad fill respectively to
In honeycomb inside and outside helmet skeleton, interior aerogel layer and outer aerogel layer, interior aerogel layer, outer aerogel layer are formed
Helmet helmet body is constituted with helmet skeleton.
In helmet helmet external surface 4 layers of carbon cloth (toray T500 unidirectional carbon fibers are bonded using epoxy resin colloid
Wei Bu), helmet helmet body is put into after mould inside, matched moulds and heats and pressurize, moulding pressure is 2MPa, heating-up temperature is 150 DEG C,
The pressurized, heated time is 4 hours；In helmet helmet external surface formation scrim cloth.
The refractory layer that refractory layer slurry formation thickness is 2mm is coated on scrim cloth surface, fire hat is obtained；Refractory layer
Composition be that mass ratio is 70:20:20:50 alumino-silicate high-temp glue, boron carbide ceramic powder, rare earth luminous powder and aeroge
Particle.
Through measurement, the weight for the fire hat that the embodiment of the present invention 1 is prepared is 620 grams.
According to GA 44-93《Fire hat national standard》The fire hat that the embodiment of the present invention 1 is prepared is worn
Permeability energy, electric conductivity and heat resistance detection.Testing result is that crown portion, sidepiece, front portion, the maximum impact at rear portion accelerate
Degree reaches 400gn, meet requirement of shelter；It is non-conductive under 2.2 kilovolts, the test condition of holding 5 minutes；Using 800 DEG C of fire
Flame blowtorch burning cap shell removes flame after 15 seconds, and flame extinguishes immediately；The helmet be up to state standards in the requirement of shelter upper limit.
The fire hat that the embodiment of the present invention 1 is prepared is thought peace F2XTREM fire hats with U.S. MSA plums and weighed
Amount compares, under identical pretective acreage, and F2XTREM fire hat helmet body weights are about 750 grams, and helmet loss of weight of the present invention is obvious.
(standard conditions are highly fallen from 1m using the steel ball of 5kg weights, it is ensured that manikin under the helmet under overproof test environment
Safety, even if the sensor on model is not touched in helmet deformation yet), impact experiment is carried out from 2 meters of height using 5kg weights,
The helmet of the present invention is intact, and a certain degree of breakage occur in F2XTREM fire hats, as a result show, helmet superior performance of the present invention.
Embodiment 2
Helmet helmet body is prepared according to the method described in embodiment 1.
2 layers of glass fabric are bonded using epoxy resin colloid in helmet helmet external surface, helmet helmet body is put into mould
Heat and pressurize after inside, matched moulds, moulding pressure is 2MPa, heating-up temperature is 150 DEG C, and the pressurized, heated time is 4 hours；In head
Helmet helmet external surface formation scrim cloth.
The refractory layer that refractory layer slurry formation thickness is 1mm is coated on scrim cloth surface, fire hat is obtained；Refractory layer
Composition be that mass ratio is 35:15:10:25 alumino-silicate high-temp glue, boron carbide ceramic powder, rare earth luminous powder and aeroge
Particle.
Through measurement, 597 grams of the fire hat weight that the embodiment of the present invention 2 is prepared.
According to GA 44-93《Fire hat national standard》The fire hat that the embodiment of the present invention 2 is prepared is worn
Permeability energy, electric conductivity and heat resistance detection.Testing result is that crown portion, sidepiece, front portion, the maximum impact at rear portion accelerate
Degree reaches 400gn, meet requirement of shelter；It is non-conductive under 2.2 kilovolts, the test condition of holding 5 minutes；Using 800 DEG C of fire
Flame blowtorch burning cap shell removes flame after 15 seconds, and flame extinguishes immediately；The requirement of shelter upper limit in being up to state standards.
The fire hat that the embodiment of the present invention 2 is prepared is thought peace F2XTREM fire hats with U.S. MSA plums and weighed
Amount compares, under identical pretective acreage, and F2XTREM fire hat helmet body weights are about 750 grams, and helmet loss of weight of the present invention is obvious.
Under overproof test environment (test condition be the same as Example 1), impact experiment, this hair are carried out from 2 meters of height using 5kg weights
The bright helmet is intact, and a certain degree of breakage occur in F2XTREM fire hats, as a result show, helmet superior performance of the present invention.
Embodiment 3
Helmet helmet body is prepared according to the method described in embodiment 1.
Carbon cloth and glass fabric are bonded using epoxy resin colloid in helmet helmet external surface, first by 2 layers of carbon fibre
Wei Bu is bonded in helmet external surface, then 2 layers of glass fabric are bonded in into carbon fiber cloth surface, and helmet helmet body is put into mould
Heat and pressurize after portion, matched moulds, moulding pressure is 2MPa, heating-up temperature is 150 DEG C, and the pressurized, heated time is 4 hours；In the helmet
Helmet external surface formation scrim cloth.
The refractory layer that refractory layer slurry formation thickness is 0.3mm is coated on scrim cloth surface, fire hat is obtained；It is heat-resisting
The composition of layer is that mass ratio is 5:5:5:5 alumino-silicate high-temp glue, boron carbide ceramic powder, rare earth luminous powder and aeroge
Grain.
Through measurement, 572 grams of the weight for the fire hat that the embodiment of the present invention 3 is prepared.
According to GA44-93《Fire hat national standard》The fire hat that the embodiment of the present invention 3 is prepared is worn
Permeability energy, electric conductivity and heat resistance detection.Testing result is that crown portion, sidepiece, front portion, the maximum impact at rear portion accelerate
Degree reaches 400gn, meet requirement of shelter；It is non-conductive under 2.2 kilovolts, the test condition of holding 5 minutes；Using 800 DEG C of fire
Flame blowtorch burning cap shell removes flame after 15 seconds, and flame extinguishes immediately；The helmet be up to state standards in the requirement of shelter upper limit.
The fire hat that the embodiment of the present invention 3 is prepared is thought peace F2XTREM fire hats with U.S. MSA plums and weighed
Amount compares, under identical pretective acreage, and F2XTREM fire hat weight is about 750 grams, and helmet loss of weight of the present invention is obvious.Super
Under standard test environment (test condition be the same as Example 1), impact experiment, head of the present invention are carried out from 2 meters of height using 5kg weights
Helmet is intact, and a certain degree of breakage occur in F2XTREM fire hats, as a result show, helmet superior performance of the present invention.
As seen from the above embodiment, the invention provides a kind of magnesium alloy helmet of use Honeycomb muscle, including：It is inside and outside
Both sides have the magnesium alloy helmet skeleton of honeycomb；It is filled in the interior aerogel layer in the honeycomb of inner side；It is filled in outside
Outer aerogel layer in honeycomb；It is arranged on the scrim cloth on outer aerogel layer surface；It is arranged on carbon cloth layer surface
Refractory layer.Compared with prior art, the present invention is by the way of the multiple material composite shock-absorbing such as magnesium alloy, aeroge, fiber cloth
Fire hat is prepared, magnesium alloy has higher specific strength, low elastic modulus, impact property, is used as main shock resistance structure；
Moreover, magnesium alloy skeleton of the present invention using honeycomb, greatly mitigates the helmet on the basis of with excellent impact resistance
The weight of skeleton.The present invention makes the helmet have good barrier propterty, with phenolic fiberglass reinforced plastics on the basis of helmet weight is mitigated
The fire hat of material is compared, and can more effectively protect human body, reduces the injury that human body is subject in scene of fire, and the helmet
Light weight, wear conveniently.
Claims (10)
1. a kind of helmet, including：
Magnesium alloy helmet skeleton with honeycomb；
It is filled in the aerogel layer in honeycomb；
It is arranged on the scrim cloth on aerogel layer surface；
It is arranged on the refractory layer on scrim cloth surface.
2. the helmet according to claim 1, it is characterised in that the honeycomb is by several regular hexagon cell shapes
Into.
3. the helmet according to claim 1, it is characterised in that the honeycomb is arranged on the interior of magnesium alloy helmet skeleton
Side and/or outside.
4. the helmet according to claim 3, it is characterised in that the wall thickness of the regular hexagon cell is S, 0 ＜ S≤4mm；
The wall a height of H, 0 ＜ H≤40mm of the regular hexagon cell.
5. the helmet according to claim 1, it is characterised in that the material of the aerogel layer is independently selected from silicon airsetting
Glue, carbon aerogels, sulphur aeroge or metal oxide aerogel.
6. the helmet according to claim 1, it is characterised in that the scrim cloth is formed by 1~5 layer of fiber cloth.
7. the helmet according to claim 1, it is characterised in that the scrim cloth include carbon cloth, glass fabric,
One or more in Kafra fiber cloth, ceramic fiber cloth and rock wool fibers cloth.
8. the helmet according to claim 1, it is characterised in that the composition of the refractory layer includes：
Alumino-silicate, boron carbide, rare earth luminous powder and aeroge.
9. the helmet according to claim 8, it is characterised in that the alumino-silicate, boron carbide, rare earth luminous powder and airsetting
The mass ratio of glue is A：B：C：D；
0 ＜ A≤70,0 ＜ B≤30,0 ＜ C≤20,0 ＜ D≤50.
10. the helmet according to claim 1, it is characterised in that the thickness of the refractory layer is 0.3~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428356.9A CN107080316B (en) | 2017-06-08 | 2017-06-08 | Magnesium alloy helmet using honeycomb reinforcing ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428356.9A CN107080316B (en) | 2017-06-08 | 2017-06-08 | Magnesium alloy helmet using honeycomb reinforcing ribs |
Publications (2)
| Publication Number | Publication Date |
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| CN107080316A true CN107080316A (en) | 2017-08-22 |
| CN107080316B CN107080316B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710428356.9A Active CN107080316B (en) | 2017-06-08 | 2017-06-08 | Magnesium alloy helmet using honeycomb reinforcing ribs |
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| CN (1) | CN107080316B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107874348A (en) * | 2017-11-22 | 2018-04-06 | 国网内蒙古东部电力有限公司电力科学研究院 | The preparation method and structure of electrical safety helmet |
| CN108143036A (en) * | 2018-01-11 | 2018-06-12 | 深圳大学 | Helmet shell, the helmet based on non-crystaline amorphous metal modified carbon fiber and preparation method thereof |
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| CN1897836A (en) * | 2003-12-20 | 2007-01-17 | 劳埃德（苏格兰）有限公司 | Body protection device |
| CN105380331A (en) * | 2015-12-15 | 2016-03-09 | 中国科学院长春应用化学研究所 | Fire fighting helmet |
| WO2017014821A2 (en) * | 2015-04-30 | 2017-01-26 | Board Of Trustees Of Michigan State University | Composite article and method of manufacture |
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| US3447163A (en) * | 1966-02-16 | 1969-06-03 | Peter W Bothwell | Safety helmets |
| CN2399952Y (en) * | 1999-11-01 | 2000-10-11 | 厦门新凯复材科技有限公司 | Composite layer structure of safety helmet |
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| WO2017014821A2 (en) * | 2015-04-30 | 2017-01-26 | Board Of Trustees Of Michigan State University | Composite article and method of manufacture |
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| CN108143036A (en) * | 2018-01-11 | 2018-06-12 | 深圳大学 | Helmet shell, the helmet based on non-crystaline amorphous metal modified carbon fiber and preparation method thereof |
| CN108143036B (en) * | 2018-01-11 | 2021-03-02 | 深圳大学 | Helmet shell based on amorphous alloy modified carbon fiber, helmet and manufacturing method of helmet shell |
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| Publication number | Publication date |
|---|---|
| CN107080316B (en) | 2020-11-13 |
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