CN103660304B - Thermoplastic gasket in individual protection helmet and manufacturing method of thermoplastic gasket - Google Patents
Thermoplastic gasket in individual protection helmet and manufacturing method of thermoplastic gasket Download PDFInfo
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- CN103660304B CN103660304B CN201310631027.6A CN201310631027A CN103660304B CN 103660304 B CN103660304 B CN 103660304B CN 201310631027 A CN201310631027 A CN 201310631027A CN 103660304 B CN103660304 B CN 103660304B
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- thermoplastic
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- liner
- thermoplasticity
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Abstract
The invention relates to a thermoplastic gasket in an individual protection helmet and a manufacturing method of the thermoplastic gasket. The manufacturing method comprises the following steps: S1, taking thermoplastic elastic resin as a basic material and adding an acrylic copolymer compound modifier and an inorganic nanoparticle aid so as to obtain a thermoplastic gasket material; S2, performing injection molding on the thermoplastic gasket material to form a material, softening the material in a drying box, pressing the material in a pressing mould into single billets, and blistering the billets to form single thermoplastic gaskets; S3, stacking the plurality of single thermoplastic gaskets to form a multi-layer thermoplastic gasket, heating and softening the multi-layer thermoplastic gasket, putting the multi-layer thermoplastic gasket between a clamp and the head of a wearer, performing thermoplastic forming on the multi-layer thermoplastic gasket according to the shape of the head of the wearer to finally form the thermoplastic gasket. The gasket is manufactured by the method; the manufacturing method is simple, convenient and low in cost, and the gasket can quickly fit the head of the wearer; the layer number of the gasket can be changed at will to meet different head styles, and the gasket cannot move when being worn.
Description
Technical field
The present invention relates to aircraft equipment, more particularly, it relates to a kind of individual protection inner helmet thermoplasticity lining
Pad and preparation method thereof.
Background technology
It is known that the most military or industrial protection helmet has a firmest shell, and generally
One layer of elastic insert is had to absorb collision energy to protect head between helmet shell and wearer's head.For
Making the wearer wear properly, liner is typically fixed by people with belt, but once collides, liner
Position will offset, wear stability to pilot and comfortableness bring adverse effect.
Summary of the invention
The technical problem to be solved in the present invention is, it is provided that the individuality of a kind of wearer's head dummy of fitting completely is prevented
Helmet interior thermoplastic's liner and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of individual protection inner helmet of structure
Thermoplasticity liner manufacture method, comprises the following steps:
S1, using thermoplastic elastomer resin as stock, add acrylic copolymer composite modifier and
Inorganic nano-particle auxiliary agent, uses height to cut double screw extruder and three carries out the most blended, melt modification,
Extrusion tie rod, then carries out tie rod cooling down, draws, pelletizing, finally obtains thermoplasticity gasket material；
S2, by thermoplasticity gasket material injection mo(u)lding formed material, material is put in baking oven soften, so
After put into compacting tool set be pressed into monolithic blank, blank plastic uptake is become monolithic thermoplastic's liner；
S3, by multiple monolithic thermoplastic's liner stratification multi-layer thermoplastic liners, multi-layer thermoplastic is served as a contrast
Pad thermoplastic, then place it between fixture and wearer's head and according to nose shape heat ductile forming,
Its cooling after from the beginning on take away and can shape, ultimately form thermoplasticity liner.
In such scheme, the thermoplastic elastomer resin described in step S1 is vinylacetate, metering system
Acid and the copolymer of ethylene, described acrylic copolymer and thermoplastic elastomer resin are formed after being combined and force mutual tolerance
Interpenetrating net polymer.
In such scheme, the side of monolithic thermoplastic's liner is provided with the most semi-enclosed hollow bead, layer and layer it
Between bead be the most mutually linked in together.
Present invention also offers a kind of individual protection inner helmet thermoplasticity liner, including multiple stacked together
Monolithic thermoplastic's liner, described monolithic thermoplastic's liner is made up of thermoplasticity gasket material, described thermoplasticity
Gasket material includes that thermoplastic elastomer resin, acrylic copolymer composite modifier and inorganic nano-particle help
Agent.
In such scheme, described thermoplastic elastomer resin is vinylacetate, methacrylic acid and ethylene
Formed after copolymer, described acrylic copolymer composite modifier and thermoplastic elastomer resin are compound and force mutual tolerance
Interpenetrating net polymer.
In such scheme, the side of described monolithic thermoplastic's liner is provided with the most semi-enclosed hollow bead, layer with
Bead between Ceng is the most mutually linked in together.
Implement the individual protection inner helmet thermoplasticity liner of the present invention, have the advantages that
Thermoplasticity liner manufacture method of the present invention is easy and with low cost, and liner can quickly fit wearer's
Head dummy.When liner can arbitrarily change the number of plies to meet different head dummys and to wear, liner will not be moved.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the Making programme schematic diagram of thermoplasticity gasket material；
Fig. 2 is thermoplasticity gasket material molding schematic flow sheet；
Fig. 3 is the structural representation of thermoplasticity liner；
Fig. 4 is the sectional drawing of thermoplasticity liner.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing is detailed
Describe the detailed description of the invention of the bright present invention in detail.
Individual protection inner helmet thermoplasticity liner manufacture method of the present invention, comprises the following steps:
S1, using thermoplastic elastomer resin as stock, add acrylic copolymer composite modifier and
Inorganic nano-particle auxiliary agent, uses height to cut double screw extruder and three carries out the most blended, melt modification,
Extrusion tie rod, then carries out tie rod cooling down, draws, pelletizing, finally obtains thermoplasticity gasket material, as
Shown in Fig. 1.
Owing to thermoplasticity blankets work temperature range is-55 DEG C～70 DEG C, temperature range is big, it is necessary to thermoplasticity
Elastic resin is modified.Certain simple elasticity of plastics resin is difficult to meet it to be had in a low temperature of-55 DEG C
There are good pliability and elasticity, and harsh use the under the high temperature of 70 DEG C with good rigidity is wanted
Ask.
In the present embodiment, thermoplastic elastomer resin is preferably vinylacetate, methacrylic acid is total to ethylene
Polymers, prepares thermoplasticity liner in conjunction with macromolecule modified technology.Ensure that the thermoplasticity liner prepared is at room temperature
Lower high resilience, at high temperature has plasticity, and thin layer can soften rapidly and dummy head at a proper temperature
The shape in portion, and its thickness can be regulated according to liner.
Use the alloying process of thermoplastic elastomer resin and acrylic copolymer, utilize IPN
(Interpenetrating Polymer Network, interpenetrating net polymer) technology, it is achieved thermoplastic elastic
The viscoelasticity of resin and the rigid composite effect of acrylic copolymer, finally realize mechanical performance, the optimization of damping capacity.
After compound, acrylic copolymer and thermoplastic elastomer resin form the mutual content network of " forcing mutual tolerance ",
The performance surmounting acrylic copolymer and thermoplastic elastomer resin will be obtained under nonlinear effect effect.Inorganic
Nanoparticle auxiliary agent has and forces mutual tolerance, interface IPN, two-way continuously, unique texture and the property such as synergism
Can feature, incompatible or half compatible polymer can be made to be combined by inierpeneirating network structure mode, shape
Become network interlocking, thus increase intramolecular friction, improve acrylic copolymer/thermoplastic elastomer resin
Damping capacity.
Thermoplasticity gasket material testing result is as shown in Table 1:
Table one
| Detection project | Unit | Index | Testing result |
| Hot strength | MPa | ≥10.5 | 16.8 |
| Tension fracture elongation rate | % | ≥250 | 253 |
| Unnotched impact strength | KJ/m2 | ≥25 | Do not thrust |
| Shore hardness | Shao A | ≥93±2 | 93 |
S2, by thermoplasticity gasket material injection mo(u)lding formed definite shape material, material is put into baking oven
Middle softening, is then placed in compacting tool set being pressed into the monolithic blank without bubble-cap, blank plastic uptake is become monolithic
Thermoplasticity liner；
S3, by multiple monolithic thermoplastic's liner stratification multi-layer thermoplastic liners, multi-layer thermoplastic liner
Can connect by the way of heat seal.By multi-layer thermoplastic liner thermoplastic, then place it in fixture and
Between wearer's head and according to nose shape heat ductile forming, after its cooling from the beginning on take away and can shape,
End form becomes thermoplasticity liner.Step S3 can also be punched out the process with cutting, as shown in Figure 2.
As it is shown on figure 3, the thermoplasticity liner in the present embodiment is formed by 5, at least four are passed through vacuum
Shaping defines semi-enclosed hollow bead, and this mode is much like with cast form.These protruding hollows are little
Ball forming is to have certain rated condition, thus the result of vacuum forming be exactly allow these layers smooth also
Contain hollow raised body.The side of monolithic thermoplastic's liner is provided with semi-enclosed hollow bead, layer and layer it
Between bead be the most mutually linked in together, play shockproof effect.Outer layer is the spheroid of major diameter, internal layer
It it is the spheroid of minor diameter.As shown in Figure 4, internal layer and outer layer are all in smoothing junction.The spheroid of junction
Not being to intersect, they are arranged in order.Internal layer and outer layer fit together, and keep certain
Crooked radian, forms whole liner.When liner, that it is deflected under the conditions of thermoplastic preferable shape is right
After cool down again, and ectonexine deformation can become the size of needs therewith.
In order to allow internal layer more fit the head dummy of wearer, processing internal layer to heat at a temperature of 200 degree
7-10 minute.Be placed in after liner heats under suitable temperature and time helmet shell the inside or
Person is placed on fixing fixture, and holding 3 minutes of then wearing on the head of the wearer and pressurize is until internal layer is cold
But solid, shaped is formed.
Present invention also offers a kind of individual protection inner helmet thermoplasticity liner, by above-mentioned manufacture method
Preparing, it includes multiple monolithic thermoplastic's liner stacked together, and monolithic thermoplastic's liner is served as a contrast by thermoplasticity
Cushion material is made, and thermoplasticity gasket material includes thermoplastic elastomer resin, acrylic copolymer composite modifier
With inorganic nano-particle auxiliary agent.
Further, thermoplastic elastomer resin is the copolymer of vinylacetate, methacrylic acid and ethylene,
Acrylic copolymer and thermoplastic elastomer resin form, after being combined, the interpenetrating net polymer forcing mutual tolerance.
Further, the side of monolithic thermoplastic's liner is provided with the most semi-enclosed hollow bead, between layers
Bead be the most mutually linked in together.
Thermoplasticity liner manufacture method of the present invention is easy and with low cost, and liner can quickly fit wearer's
Head dummy.When liner can arbitrarily change the number of plies to meet different head dummys and to wear, liner will not be moved.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematic rather than restrictive, this
The those of ordinary skill in field, under the enlightenment of the present invention, is being protected without departing from present inventive concept and claim
Under the ambit protected, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (2)
1. an individual protection inner helmet thermoplasticity liner, it is characterized in that, including multiple monolithic thermoplastic's liners stacked together, described monolithic thermoplastic's liner is made up of thermoplasticity gasket material, described thermoplasticity gasket material includes thermoplastic elastomer resin, acrylic copolymer composite modifier and inorganic nano-particle auxiliary agent, described thermoplastic elastomer resin is to form, after the copolymer of vinylacetate, methacrylic acid and ethylene, described acrylic copolymer composite modifier and thermoplastic elastomer resin are combined, the interpenetrating net polymer forcing mutual tolerance.
Individual protection inner helmet thermoplasticity liner the most according to claim 1, it is characterised in that the side of described monolithic thermoplastic's liner is provided with the most semi-enclosed hollow bead, and bead between layers is mutually linked in together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631027.6A CN103660304B (en) | 2013-11-29 | 2013-11-29 | Thermoplastic gasket in individual protection helmet and manufacturing method of thermoplastic gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631027.6A CN103660304B (en) | 2013-11-29 | 2013-11-29 | Thermoplastic gasket in individual protection helmet and manufacturing method of thermoplastic gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103660304A CN103660304A (en) | 2014-03-26 |
| CN103660304B true CN103660304B (en) | 2017-01-11 |
Family
ID=50299668
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310631027.6A Active CN103660304B (en) | 2013-11-29 | 2013-11-29 | Thermoplastic gasket in individual protection helmet and manufacturing method of thermoplastic gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103660304B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201501834D0 (en) * | 2015-02-04 | 2015-03-18 | Isis Innovation | An impact absorbing structure |
| GB201708094D0 (en) * | 2017-05-19 | 2017-07-05 | Mips Ab | Helmet |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432099A (en) * | 1982-07-09 | 1984-02-21 | Gentex Corporation | Individually fitted helmet liner |
| US5891541A (en) * | 1996-06-18 | 1999-04-06 | Reef Industries, Inc. | Forming a continuous reinforced composite material |
| KR100539131B1 (en) * | 2000-10-18 | 2005-12-26 | 미쯔이카가쿠 가부시기가이샤 | Foam of thermoplastic urethane elastomer composition and process for producing the foam |
| NO323512B1 (en) * | 2004-04-07 | 2007-06-04 | Crescendo As | Stop mold for making a helmet lining. |
| US20060059606A1 (en) * | 2004-09-22 | 2006-03-23 | Xenith Athletics, Inc. | Multilayer air-cushion shell with energy-absorbing layer for use in the construction of protective headgear |
| JP5722629B2 (en) * | 2007-11-16 | 2015-05-27 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ | Articles containing a bimodal ionomer composition |
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2013
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| CN103660304A (en) | 2014-03-26 |
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