CN114106554A - Polyurethane/shear thickening gel composite material and application thereof in automobile seat - Google Patents
Polyurethane/shear thickening gel composite material and application thereof in automobile seat Download PDFInfo
- Publication number
- CN114106554A CN114106554A CN202111412394.8A CN202111412394A CN114106554A CN 114106554 A CN114106554 A CN 114106554A CN 202111412394 A CN202111412394 A CN 202111412394A CN 114106554 A CN114106554 A CN 114106554A
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- Prior art keywords
- polyurethane
- shear thickening
- thickening gel
- gel composite
- buffering energy
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 34
- 239000004814 polyurethane Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 230000008719 thickening Effects 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 30
- 230000003139 buffering effect Effects 0.000 claims abstract description 25
- 239000006260 foam Substances 0.000 claims abstract description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- -1 polymethylene Polymers 0.000 claims description 9
- 229920005862 polyol Polymers 0.000 claims description 9
- 150000003077 polyols Chemical class 0.000 claims description 9
- 239000003981 vehicle Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
- 235000012424 soybean oil Nutrition 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000010009 beating Methods 0.000 abstract description 2
- 208000034189 Sclerosis Diseases 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000009189 diving Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000002414 leg Anatomy 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- 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
- C08L75/04—Polyurethanes
- C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
- B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/62—Thigh-rests
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a polyurethane/shear thickening gel composite material and application thereof in an automobile seat, wherein the polyurethane/shear thickening gel composite material comprises 10-30% of shear thickening gel and 70-90% of polyurethane in percentage by weight; the polyurethane comprises a material A and a material B, wherein the weight ratio of the material A to the material B is 1.2-1.6. Adopt foretell polyurethane shear thickening gel combined material to make buffering energy-absorbing piece, will buffering energy-absorbing piece imbeds in the cushion foam of seat or will buffering energy-absorbing piece is fixed in on cushion skeleton or the automobile body panel beating, just buffering energy-absorbing piece is located the cushion front portion. It can be by gentle sclerosis when receiving the impact, absorbs the collision energy, realizes the dive function of preventing of seat simultaneously.
Description
Technical Field
The invention relates to an automobile seat material, in particular to a polyurethane/shear thickening gel composite material and application thereof in an automobile seat.
Background
As automobiles develop, users are more and more concerned about the seating comfort of automobile seats, but the improvement of the seating comfort of the seats may bring about a reduction in safety performance. The seat has a very important safety function of preventing the vehicle from diving, and a special anti-diving mechanism is used for providing the function, so that the aim of preventing the vehicle occupant from sliding forwards for too long a distance along with a safety belt when a collision happens, and the body of the vehicle occupant is damaged. However, the conventional anti-dive mechanism is generally made of metal or EPP (expanded polypropylene), and the hardness thereof is very high, and the local body feeling of the buttocks and thighs of the human body is hard in a part of special sitting postures, so that the human body is uncomfortable, and the sitting comfort of customers is affected.
CN206537183U discloses an anti-dive structure of a car seat, made of EPP in a concave shape to provide an anti-dive function: the anti-submergence mainly comprises an EPP foaming molding to manufacture a special-shaped part, wherein the riding area is concave, and the front end anti-submergence area is formed by a part similar to a cuboid. This type of anti-dive structure can cause the human body discomfort for the leg and personnel to lean forward the position of sitting down, and the travelling comfort evaluation is relatively poor.
CN104608661A discloses a safe and comfortable car seat for preventing dive, which utilizes a connecting piece and a spring to control a metal dive-preventing plate to achieve the dive-preventing function. The submergence preventing mechanism is complex in structure and cannot be realized in the rear seat cushion.
Disclosure of Invention
The invention aims to provide a polyurethane/shear thickening gel composite material and application thereof in an automobile seat, which can absorb collision energy by softening and hardening when being impacted and simultaneously realize the submergence preventing function of the seat.
The polyurethane/shear thickening gel composite material comprises, by weight, 10-30% of shear thickening gel and 70-90% of polyurethane;
the polyurethane comprises a material A and a material B, wherein the weight ratio of the material A to the material B is 1.2-1.6.
Further, the material A is a polyol composition material and comprises 85-95 wt% of ethylene glycol, propylene glycol, castor oil polyol, soybean oil polyol and 5-15 wt% of a catalyst and a stabilizer;
the material B is polymethylene polyphenyl polyisocyanate or modified polymethylene polyphenyl polyisocyanate.
Further, the catalyst is an amine catalyst, and the stabilizer is silicone oil.
The utility model provides an application of polyurethane shear thickening gel combined material in car seat, adopts foretell polyurethane shear thickening gel combined material to make buffering energy-absorbing piece, will buffering energy-absorbing piece imbeds in the cushion foam of seat or will buffering energy-absorbing piece is fixed in on cushion skeleton or the automobile body panel beating, just buffering energy-absorbing piece is located the cushion front portion.
Furthermore, a plurality of bulges are arranged on the top surface of the buffering energy-absorbing block at intervals.
Further, the arch is the cuboid, and length is 10~20mm, and the width is 10~20mm, highly is 3~10mm, protruding top surface edge radius angle, interval 3~10mm between the adjacent arch.
Compared with the prior art, the invention has the following beneficial effects.
1. According to the invention, the polyurethane and the shear thickening gel are compounded, the weight percentage of the shear thickening gel is limited to 10-30%, and the weight ratio of the material A to the material B in the polyurethane is limited to 1.2-1.6, so that the composite material can generate a solid-like state characteristic when being impacted, namely the composite material is hardened from soft to hard, the impact energy absorption efficiency and the compression hardness of the material are improved, the compression permanent deformation rate is reduced, and the composite material can meet the performance requirement of a seat anti-dive structural member.
2. The energy-absorbing cushion is made of polyurethane/shear thickening gel, the energy-absorbing cushion is embedded into cushion foam of a seat or is fixed on a cushion framework or a vehicle body sheet metal, the energy-absorbing cushion is positioned in the front of the cushion, and the energy-absorbing cushion is hardened due to impact in the whole vehicle collision process so as to support legs of passengers and realize the function of preventing the passengers from diving. And when the bicycle is normally taken, the rigidity is lower, and the riding comfort is ensured.
3. According to the invention, the plurality of bulges are arranged on the top surface of the buffering energy-absorbing block at intervals, when a passenger sits on the vehicle, pressure is transmitted to the buffering energy-absorbing block, the bulges can be contacted with the bulges firstly, and the size parameters of the bulges are specially limited, so that the bulges deform after being pressed and just fill the gaps around, thus the deformation amount after being pressed is increased, the subjective feeling is softer, and the riding comfort is further improved.
Drawings
FIG. 1 is a schematic view of the arrangement of the energy-absorbing cushion block of the present invention in a seat cushion;
FIG. 2 is a top view of the energy absorption block of the present invention;
FIG. 3 is a side view of the energy absorption bumper of the present invention.
In the figure, 1 is a buffering energy absorption block, 2 is a bulge, and 3 is cushion foam.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The polyurethane/shear thickening gel composite material comprises 10-30 wt% of shear thickening gel and 70-90 wt% of polyurethane, and the bulk density of the composite material is 320-400 kg/m3. The polyurethane comprises a material A and a material B, wherein the material A is a polyol composition and comprises 85-95 wt% of ethylene glycol, propylene glycol, castor oil polyol, soybean oil polyol and 5-15 wt% of a catalyst and a stabilizer; the material B is polymethylene polyphenyl polyisocyanate or modified polymethylene polyphenyl polyisocyanate. The catalyst is an amine catalyst, and the stabilizer is silicone oil.
The weight ratio of the material A to the material B is 1.2-1.6. The content of each component in the composite material is specially limited, so that the composite material generates solid-like state characteristics when being impacted, namely the composite material is integrally hardened from soft, the impact energy absorption efficiency of the material is improved to 85-95%, the compression hardness is 30-80KPa when the compression ratio is 40%, and the compression permanent deformation rate is reduced to below 10%, so that the composite material meets the performance requirements of the anti-dive structure of the seat.
The polypropylene and polyurethane composite material is used as a comparative example, the polypropylene layer and the polyurethane layer are overlapped up and down to form the polypropylene-polyurethane composite material, the impact energy absorption efficiency is improved to 80-85% through performance tests, the compression hardness is about 200-300KPa when the compression ratio is 40%, and the compression permanent deformation rate is reduced to 40-45%. It can be seen that the overall performance of the polyurethane/shear thickening gel composite is superior to the comparative examples.
The polyurethane/shear thickening gel composite material is used for preparing a buffering energy absorption block, and comprises 20% of shear thickening gel and 80% of polyurethane in percentage by weight. Referring to fig. 1, the energy absorption buffer block 1 is embedded in cushion foam 3 of a seat, and the energy absorption buffer block 1 is located in the front of the cushion. It should be noted that the buffering energy-absorbing block 1 can also be fixed on a cushion framework or a vehicle body metal plate, and can also realize the function of preventing diving.
Referring to fig. 2 and 3, a plurality of protrusions 2 are arranged on the top surface of the energy-absorbing buffering block 1 at intervals, the protrusions 2 are cuboid, the length is 10-20 mm, the width is 10-20 mm, the height is 3-10 mm, the top surface edges of the protrusions 2 are rounded off, and the distance between every two adjacent protrusions 2 is 3-10 mm. When the passenger took, can contact arch 2 earlier when pressure transmits buffering energy-absorbing piece 1, through carrying out special limitation to 2 size parameters of arch for produce after a plurality of 2 bells are compressed and warp, just in time fill to around in the clearance space, thereby increase the deflection after the compression, subjective impression then can be softer, has further promoted the riding comfort.
During the specific preparation, the buffering energy-absorbing block 1 is embedded into a foaming mold when the seat cushion foam 3 is foamed, the foaming mold is foamed and molded together, and the positioning is arranged on the surface of the mold to ensure the accuracy of the position. Because hardness and structural optimal design when normally taking, the body sense is softer when taking, makes the user be difficult for noticing this buffering energy-absorbing piece 1's existence to holistic riding comfort has been promoted. At the moment of collision, a human body impacts the energy-absorbing buffer block 1, the impact speed is 1.5-4m/s, and the energy-absorbing buffer block 1 with non-Newtonian fluid characteristics at the impact speed is instantly hardened and shows solid-like characteristics, so that the human body is prevented from moving forwards to achieve the aim of preventing the human body from sinking. Then the buffering energy-absorbing block 1 can absorb impact energy to a large extent, the kinetic energy is converted into chemical energy to be absorbed, and along with the reduction of the impact energy of the human body, the human body does not move forwards any more, so that passengers are effectively protected.
The buffering energy absorption block 1 can be automatically converted into a solid-like state according to the improvement of the impact speed, and the function of automatic regulation and control can be realized by means of the characteristics of non-Newtonian fluid without relying on other redundant mechanisms. The seat provided with the buffering energy-absorbing block has the advantages of taking the riding comfort and the submergence prevention function into consideration.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A polyurethane/shear thickening gel composite characterized by: the adhesive comprises, by weight, 10-30% of shear thickening gel and 70-90% of polyurethane;
the polyurethane comprises a material A and a material B, wherein the weight ratio of the material A to the material B is 1.2-1.7.
2. The polyurethane/shear thickening gel composite of claim 1, wherein: the material A is a polyol composition material and comprises 85-95 wt% of ethylene glycol, propylene glycol, castor oil polyol, soybean oil polyol and 5-15 wt% of a catalyst and a stabilizer;
the material B is polymethylene polyphenyl polyisocyanate or modified polymethylene polyphenyl polyisocyanate.
3. The application of the polyurethane/shear thickening gel composite material in the automobile seat is characterized in that: the polyurethane/shear thickening gel composite material of claim 1 or 2 is used for preparing a buffering energy-absorbing block, the buffering energy-absorbing block is embedded into cushion foam of a seat or is fixed on a cushion framework or a vehicle body sheet metal, and the buffering energy-absorbing block is positioned in the front of the cushion.
4. Use of the polyurethane/shear thickening gel composite according to claim 3 in automotive seats, characterized in that: the top surface of the buffering energy-absorbing block is provided with a plurality of bulges at intervals.
5. Use of the polyurethane/shear thickening gel composite according to claim 4 in automotive seats, characterized in that: the arch is the cuboid, and length is 10~20mm, and the width is 10~20mm, highly is 3~10mm, protruding top surface edge radius angle, interval 3~10mm between the adjacent arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412394.8A CN114106554A (en) | 2021-11-25 | 2021-11-25 | Polyurethane/shear thickening gel composite material and application thereof in automobile seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412394.8A CN114106554A (en) | 2021-11-25 | 2021-11-25 | Polyurethane/shear thickening gel composite material and application thereof in automobile seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114106554A true CN114106554A (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111412394.8A Pending CN114106554A (en) | 2021-11-25 | 2021-11-25 | Polyurethane/shear thickening gel composite material and application thereof in automobile seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114106554A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573865A (en) * | 2022-03-03 | 2022-06-03 | 四川大学 | Impact-resistant wearable material, wearable sensing material and preparation method |
| CN116656117A (en) * | 2023-07-11 | 2023-08-29 | 扬州市天宇鞋业有限公司 | Intelligent toe-protecting elastomer toe cap material for safety shoes and preparation method thereof |
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| CN103145941A (en) * | 2013-03-19 | 2013-06-12 | 北京化工大学 | Preparation method of polyurethane energy-absorbing material |
| CN103772960A (en) * | 2014-01-23 | 2014-05-07 | 德清苏尔新材料有限公司 | Polyurethane-based impact-resistant composite material and preparation method thereof |
| CN106750132A (en) * | 2016-12-30 | 2017-05-31 | 中物功能材料研究院有限公司 | A kind of polyurethane foam vibration-absorptive material and preparation method thereof |
| CN107043450A (en) * | 2016-12-30 | 2017-08-15 | 中物功能材料研究院有限公司 | A kind of microcellular polyurethane elastomer vibration-absorptive material and preparation method thereof |
| CN109438666A (en) * | 2018-10-31 | 2019-03-08 | 湖南御邦华安新材料科技有限公司 | Low temperature resistant, anti-ballistic materials and its preparation method and application |
| CN109666219A (en) * | 2018-12-14 | 2019-04-23 | 万华化学集团股份有限公司 | Polypropylene/shear thickening gel complex material and its application in bumper |
-
2021
- 2021-11-25 CN CN202111412394.8A patent/CN114106554A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103145941A (en) * | 2013-03-19 | 2013-06-12 | 北京化工大学 | Preparation method of polyurethane energy-absorbing material |
| CN103772960A (en) * | 2014-01-23 | 2014-05-07 | 德清苏尔新材料有限公司 | Polyurethane-based impact-resistant composite material and preparation method thereof |
| CN106750132A (en) * | 2016-12-30 | 2017-05-31 | 中物功能材料研究院有限公司 | A kind of polyurethane foam vibration-absorptive material and preparation method thereof |
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| CN109666219A (en) * | 2018-12-14 | 2019-04-23 | 万华化学集团股份有限公司 | Polypropylene/shear thickening gel complex material and its application in bumper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573865A (en) * | 2022-03-03 | 2022-06-03 | 四川大学 | Impact-resistant wearable material, wearable sensing material and preparation method |
| CN114573865B (en) * | 2022-03-03 | 2023-03-03 | 四川大学 | Impact-resistant wearable material, wearable sensing material and preparation method |
| CN116656117A (en) * | 2023-07-11 | 2023-08-29 | 扬州市天宇鞋业有限公司 | Intelligent toe-protecting elastomer toe cap material for safety shoes and preparation method thereof |
| CN116656117B (en) * | 2023-07-11 | 2023-11-14 | 扬州市天宇鞋业有限公司 | Intelligent toe-protecting elastomer toe cap material for safety shoes and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220301 |
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