CN114634703A - Silica gel-like handfeel elastomer composite suitable for wearable equipment and preparation method thereof - Google Patents
Silica gel-like handfeel elastomer composite suitable for wearable equipment and preparation method thereof Download PDFInfo
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- CN114634703A CN114634703A CN202210435394.8A CN202210435394A CN114634703A CN 114634703 A CN114634703 A CN 114634703A CN 202210435394 A CN202210435394 A CN 202210435394A CN 114634703 A CN114634703 A CN 114634703A
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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
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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Abstract
The invention discloses a silica gel-like handfeel elastomer composite suitable for wearable equipment and a preparation method thereof, wherein the elastomer composite comprises the following raw materials in percentage by mass: thermoplastic polyurethane elastomer, organic silicon copolymer, thermoplastic polyester elastomer, fluorine-containing silicone oil, silicon micropowder and anti-aging agent. The thermoplastic polyurethane elastomer is aliphatic polyether type thermoplastic polyurethane elastomer, and the organosilicon copolymer is organosilicon and carbamate copolymer. According to the invention, the organic silicon and carbamate copolymer with excellent compatibility with the thermoplastic polyurethane elastomer is added, so that the material is silky and smooth while the higher tearing strength of the material is ensured, part of the thermoplastic polyester elastomer is added to provide the good forming performance of the material, a small amount of the fluorosilicone elastomer is added, the oil resistance and sweat pollution resistance of the material are improved, and the application value of the elastic compound in wearable equipment is increased.
Description
Technical Field
The invention relates to the technical field of polymer composite materials, in particular to an elastomer composite suitable for wearing equipment and simulating silica gel hand feeling and a preparation method thereof.
Background
Along with the gradual popularization of artificial intelligence in recent years, various wearing devices such as smart watches, smart bracelets, VR glasses, neck hanging earphones and the like appear in a large number in the lives of people, and the requirements of the wearing devices on materials are currently concentrated on the following points: 1. good skin feel; 2. good sweat resistance and oil stain resistance; 3. good tear resistance of the material. 4. Good yellowing resistance.
In response to these requirements of wearing devices for materials, there are several types of elastomer materials currently used in the market for wearing devices: 1. fully vulcanized silicone rubber; 2. dynamic vulcanized silicone rubbers, such as dow corning TPSIV; 3. aliphatic thermoplastic polyether urethane elastomers; 4. common polyester or polyether TPUs. The fully vulcanized silicone rubber can endow the material with excellent silky touch feeling and certain sweat and oil resistance, but the fully vulcanized silicone rubber has complicated forming process, can not be directly injection-molded and has low production efficiency; the dynamic vulcanized silicone rubber can be directly produced by injection molding, and can endow the material with good silky touch feeling, but the vulcanizing agent is added in the dynamic vulcanized silicone rubber, the high-shear process of dynamic vulcanization can cause the degradation of the TPU continuous phase in the material, the breaking tensile strength and the tearing strength of the material are greatly reduced, and the material is easy to crack in the application of the watchband of the intelligent watch, so that the material is scrapped; although the aliphatic thermoplastic polyurethane elastomer has stronger breaking tensile strength and tearing strength and excellent yellowing resistance of the material, the surface touch interference of the simple aliphatic thermoplastic polyether elastomer is poor in oil stain resistance; common polyester or polyether TPUs have neither good yellowing resistance nor good touch and poor oil stain resistance.
Aiming at the defects of the materials and the problem of pain points in the application process, the development of the elastomer material which can be directly formed by injection molding and has good silky touch, oil stain resistance and yellowing resistance has important significance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an elastomer compound with a silica gel-like hand feeling suitable for wearable equipment and a preparation method thereof.
In order to achieve the above object, a first aspect of the present invention provides an elastomer composite with a simulated silica gel hand feeling suitable for wearable equipment, which comprises the following raw materials by mass:
40-60% of thermoplastic polyurethane elastomer, 20-30% of organic silicon copolymer, 5-15% of thermoplastic polyester elastomer, 0.5-2% of fluorine-containing silicone oil, 5-15% of silica micropowder and 0.2-1% of anti-aging agent;
the thermoplastic polyurethane elastomer is an aliphatic polyether type thermoplastic polyurethane elastomer, and the organic silicon copolymer is an organic silicon and carbamate copolymer.
The aliphatic polyether thermoplastic polyurethane elastomer has high yellowing resistance, the polyether TPU has better water resistance than the polyester TPU, and the aliphatic polyether thermoplastic polyurethane elastomer is selected as a main base material, so that the water resistance and the yellowing resistance of the material are improved.
The organic silicon and carbamate copolymer is a thermoplastic material, and because the molecular chain of the organic silicon and carbamate copolymer contains more organic silicon units similar to silicon rubber, the organic silicon and carbamate copolymer has excellent silky touch characteristic, the composite material can be endowed with better silky touch through blending modification, and meanwhile, because the molecular chain of the organic silicon and carbamate copolymer contains polyurethane (namely polyurethane) molecular fragments, the organic silicon and carbamate copolymer has excellent compatibility with a main base material aliphatic polyether type thermoplastic polyurethane elastomer, the obtained blended composite material has higher breaking tensile strength and tearing strength, and the material has excellent cracking resistance.
Preferably, the hardness of the aliphatic polyether thermoplastic polyurethane elastomer is from 80A to 90A in Shore.
Preferably, the ratio of the silicone monomer in the silicone/urethane copolymer is 70% or more.
Preferably, the soft segment of the thermoplastic polyester elastomer is of a polytetramethylene glycol ether type, and the hardness is 70A to 90A in Shore.
Preferably, the fluorine-containing silicone oil is vinyl-terminated fluorosilicone polymer, and the viscosity is 1000 mPa.s-2000 mPa.s. Further preferably, the vinyl-terminated fluorosilicone polymer may be a vinyl-terminated polytrifluoropropylmethylsiloxane.
The vinyl-terminated poly (trifluoropropylmethylsiloxane) can effectively reduce the surface energy of the material due to the existence of fluorine-containing groups in the molecular chain, and has the functions of hydrophobicity and oleophobicity, and meanwhile, the vinyl existing at the molecular chain terminal can react with polyurethane and be grafted to the polyurethane molecular chain in the processing process, so that the vinyl-terminated poly (trifluoropropylmethylsiloxane) is resistant to precipitation and has long-acting oil stain resistance.
Preferably, the fine silica powder is a purified ultrafine fine silica powder, and the D50 range is 2 to 6 μm. The silicon micropowder has higher wear resistance coefficient, and the wear resistance of the composite material can be effectively improved by adding part of refined superfine silicon micropowder in the composite material.
Preferably, the anti-aging agent is one or a mixture of UV622, UV944, UV5411 and UV 1260.
The invention provides a preparation method of an elastomer compound with silica gel-like hand feeling suitable for wearable equipment, which comprises the following steps:
(1) weighing all the raw materials according to the mass percentage, and uniformly mixing the fluorine-containing silicone oil, the thermoplastic polyurethane elastomer, the organic silicon copolymer and the thermoplastic polyester elastomer in a high-speed mixer to obtain a mixture A;
(2) adding the silicon micropowder and the anti-aging agent into the mixture A, and continuously and uniformly mixing in a high-speed mixer to obtain a mixture B;
(3) and putting the mixture B into a double-screw extruder, and extruding and granulating to obtain the silica gel hand feeling-imitated elastomer composite suitable for wearable equipment.
Preferably, in the extrusion granulation process in the step (3), the temperature of each section of the screw is set to be 160-210 ℃, and the rotating speed of the screw is set to be 300-400 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the organic silicon and carbamate copolymer with excellent compatibility with the thermoplastic polyurethane elastomer is added, so that the material is silky and smooth while the higher tearing strength of the material is ensured, part of the thermoplastic polyester elastomer is added to provide good forming performance of the material, a small amount of the fluorosilicone elastomer is added, the oil resistance and sweat pollution resistance of the material are improved, the application value of the elastic composite in wearing equipment is increased, the elastic composite has thermoplastic characteristics, and compared with silica gel, the elastic composite can be processed by direct injection molding, so that the production efficiency is improved, and the production cost is reduced.
2. According to the invention, the aliphatic polyether type thermoplastic polyurethane elastomer is selected as the main base material, so that the problems of yellowing and hydrolytic cracking of the polyurethane elastomer material for common wearable equipment after long-term use are solved.
3. According to the invention, the silicone and carbamate copolymer is innovatively selected to be modified to simulate the hand feeling of silica gel, and the aliphatic polyether type thermoplastic polyurethane elastomer main base material and the silicone and carbamate copolymer are subjected to blending modification, so that the problem of poor breaking tensile strength and tearing strength of conventional dynamic vulcanized silicone rubber is solved, and the use safety of the composite material in wearable equipment is improved.
4. The invention creatively selects the terminal vinyl-terminated poly (trifluoropropylmethyl siloxane) as the material oleophobic and stain resistant modification auxiliary agent, and utilizes the reaction grafting effect of the terminal vinyl and the main base material of the material in the processing process to endow the material with long-acting oil-proof and stain resistant effects, thereby solving the defect that the common elastomer material cannot resist oil stains in the application of wearable equipment at present.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The aromatic polyether TPU used in examples 1 to 4 and comparative examples 1 to 4 is TPU M85 from Meirui New materials GmbH, the aliphatic polyether TPU is TPU A885 from Meirui New materials GmbH, the silicone copolymer is GENIOPLAST Pellet 345 from Wacker chemical Germany, the dynamically vulcanized silicone rubber is TPSIV 3111 from Dow Corning, the thermoplastic polyester elastomer is TPEE H28DMG from Jiangyun and Chuang elastomer New materials science and technology GmbH, the fluorine-containing silicone oil is AFS-R-V2210 from Guanheng Heng New materials science and technology GmbH, and the balance is conventional raw materials in the market.
The following are specific examples and comparative examples of the present invention and corresponding performance test data.
A preparation method of an elastomer compound with silica gel-like hand feeling suitable for wearable equipment comprises the following steps:
(1) uniformly mixing the fluorine-containing silicone oil in the examples 1 to 4 and the particles (including TPU, organic silicon copolymer, dynamic vulcanized silicone rubber and thermoplastic polyester elastomer) in the raw materials in the comparative examples 1 to 4 in a high-speed mixer, wherein the mixture ratio does not contain the fluorine-containing silicone oil, and directly and uniformly mixing all the materials in the high-speed mixer;
(2) and (3) putting the mixed materials into a double-screw extruder for extrusion granulation, wherein the temperature of each interval of a screw is set to be 160-210 ℃, and the rotating speed of the screw is set to be 300-400 r/min.
TABLE 1 raw Material compositions of elastomer composites of examples 1-4 and comparative examples 1-4
TABLE 2 test results of elastomer composites of examples 1-4 and comparative examples 1-4
Note: the anti-UVA test conditions are as follows: lamp UVA-340, irradiance: ultraviolet irradiation at 70 + -3 deg.C for 8 hr, 0.89W/m2Condensation at 50 ℃. + -. 3 ℃ for 4h, total test duration 96 h.
The stain resistance test method comprises the following steps: blending edible oil and tomato sauce at a ratio of 1:1, uniformly coating the mixture on a test piece, placing the test piece in a 60 ℃ oven for 8 hours, taking out the test piece, cooling the test piece to room temperature, dipping a proper amount of alcohol into absorbent cotton to wipe the surface of the test piece, and observing the pollution condition of the surface of the test piece (wherein the first level is serious pollution, the coating part obviously changes color, the second level is certain pollution, the coating surface has certain color, the 3 level is slight pollution, the coating part slightly changes color, the fourth level is very slight pollution, and the coating part basically cannot change color).
The method for judging the hand feeling and skin-friendly level comprises the following steps: 5 testers were allowed to touch the surface of the test piece with their hands in sequence (dry hand feel without silky touch at the first stage, light and slightly slippery touch at the second stage, a certain silky touch at the third stage but with an obvious difference in hand feel from pure dynamic silicon sulfide rubber, and an obvious silky touch at the 4 stage, which is close to the hand feel of dynamic silicon sulfide rubber).
The test results of the examples and the comparative example show that the elastomer composites prepared in the examples 1 to 4 have high tensile strength and tear strength, excellent yellowing resistance, good silky touch and good oil stain resistance. Comparative example 1 an aromatic polyether TPU was used as the main substrate in addition to example 1, and the resulting elastomer composite had poor yellowing resistance. Comparative example 2 the silicone copolymer was removed from the elastomer composition of example 2, and the resulting elastomer composite had reduced oil stain resistance and a dry hand. Comparative example 3 by removing the fluorosilicone oil based on example 3, the prepared elastomer composite has poor oil stain resistance, is easily polluted by oil stains, and is not easily cleaned. Comparative example 4 on the basis of example 4, the elastomer composite prepared by using the dynamically vulcanized silicone rubber to replace the silicone copolymer has lower tensile strength and tear strength, and the material has cracking risk after long-term use.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The silica gel-like hand feeling elastomer composite suitable for the wearable equipment is characterized by comprising the following raw materials in percentage by mass:
40-60% of thermoplastic polyurethane elastomer, 20-30% of organic silicon copolymer, 5-15% of thermoplastic polyester elastomer, 0.5-2% of fluorine-containing silicone oil, 5-15% of silica micropowder and 0.2-1% of anti-aging agent;
the thermoplastic polyurethane elastomer is an aliphatic polyether type thermoplastic polyurethane elastomer, and the organic silicon copolymer is an organic silicon and carbamate copolymer.
2. The elastomer composite with simulated silica gel hand feeling suitable for the wearable device as claimed in claim 1, wherein the hardness of the aliphatic polyether type thermoplastic polyurethane elastomer is from 80A to 90A Shore.
3. The elastomer composite with simulated silica gel hand feeling suitable for the wearable device as claimed in claim 1, wherein the ratio of the silicone monomer in the silicone and urethane copolymer is more than 70%.
4. The elastomer composite with the simulated silica gel hand feeling suitable for the wearable device as claimed in claim 1, wherein the soft segment of the thermoplastic polyester elastomer is of a polytetramethylene glycol ether type and has a hardness of 70A-90A.
5. The elastomer composite with the simulated silica gel hand feeling suitable for the wearable device as claimed in claim 1, wherein the fluorosilicone oil is a vinyl terminated fluorosilicone polymer, and the viscosity is 1000mpa.s to 2000 mpa.s.
6. The elastomer composite with simulated silica gel hand feeling suitable for the wearable device as claimed in claim 5, wherein the vinyl terminated fluorosilicone polymer is vinyl terminated polytrifluoropropylmethylsiloxane.
7. The elastomer composite with the simulated silica gel hand feeling suitable for the wearable device as claimed in claim 1, wherein the silica micropowder is refined ultrafine silica micropowder, and the D50 range is 2 μm-6 μm.
8. The elastomer composite with the imitated silica gel hand feeling suitable for the wearing device of claim 1, wherein the anti-aging agent is one or a mixture of UV622, UV944, UV5411 and UV 1260.
9. The preparation method of the silica gel-like elastomer composite suitable for the wearable device as claimed in any one of claims 1 to 8, comprising the following steps:
(1) weighing all the raw materials according to the mass percentage, and uniformly mixing the fluorine-containing silicone oil, the thermoplastic polyurethane elastomer, the organic silicon copolymer and the thermoplastic polyester elastomer in a high-speed mixer to obtain a mixture A;
(2) adding the silicon micropowder and the anti-aging agent into the mixture A, and continuously and uniformly mixing in a high-speed mixer to obtain a mixture B;
(3) and putting the mixture B into a double-screw extruder, and extruding and granulating to obtain the silica gel hand feeling-imitated elastomer composite suitable for wearable equipment.
10. The method for preparing the elastomer composite with the simulated silica gel hand feeling suitable for the wearable device as claimed in claim 9, wherein in the extrusion granulation process in the step (3), the temperature of each section of the screw is set to be 160-210 ℃, and the rotation speed of the screw is set to be 300-400 r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304904A (en) * | 2022-09-08 | 2022-11-08 | 东莞市兴晟达智能科技有限公司 | Anti-aging high-resilience earphone neck hanging wire and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093702A (en) * | 2010-12-13 | 2011-06-15 | 成都大成塑胶有限公司 | Preparation method of thermoplastic polyurethane-polysiloxane block copolymer |
| CN103554426A (en) * | 2013-10-29 | 2014-02-05 | 上海汇得化工有限公司 | Brand discoloration wet-process polyurethane resin with good hydrolysis resistance |
| WO2016023914A1 (en) * | 2014-08-12 | 2016-02-18 | Multibase Sa | Thermoplastic polyurethane silicone elastomers |
| CN107903618A (en) * | 2017-11-16 | 2018-04-13 | 万华化学集团股份有限公司 | A kind of resistant to pollution elastomeric compound and its preparation method and application |
| CN109096739A (en) * | 2018-07-17 | 2018-12-28 | 东莞市国丰塑业有限公司 | A kind of Intelligent bracelet wrist strap thermoplastic elastic material |
| CN109265966A (en) * | 2018-09-17 | 2019-01-25 | 上海玉城高分子材料股份有限公司 | Wearable device polyurethane/fluorine silicone rubber thermoplastic elastomer (TPE) and preparation method thereof |
-
2022
- 2022-04-24 CN CN202210435394.8A patent/CN114634703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093702A (en) * | 2010-12-13 | 2011-06-15 | 成都大成塑胶有限公司 | Preparation method of thermoplastic polyurethane-polysiloxane block copolymer |
| CN103554426A (en) * | 2013-10-29 | 2014-02-05 | 上海汇得化工有限公司 | Brand discoloration wet-process polyurethane resin with good hydrolysis resistance |
| WO2016023914A1 (en) * | 2014-08-12 | 2016-02-18 | Multibase Sa | Thermoplastic polyurethane silicone elastomers |
| CN106795369A (en) * | 2014-08-12 | 2017-05-31 | 玛尔提贝斯股份有限公司 | Thermoplastic polyurethane elastomer silicone |
| CN107903618A (en) * | 2017-11-16 | 2018-04-13 | 万华化学集团股份有限公司 | A kind of resistant to pollution elastomeric compound and its preparation method and application |
| CN109096739A (en) * | 2018-07-17 | 2018-12-28 | 东莞市国丰塑业有限公司 | A kind of Intelligent bracelet wrist strap thermoplastic elastic material |
| CN109265966A (en) * | 2018-09-17 | 2019-01-25 | 上海玉城高分子材料股份有限公司 | Wearable device polyurethane/fluorine silicone rubber thermoplastic elastomer (TPE) and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304904A (en) * | 2022-09-08 | 2022-11-08 | 东莞市兴晟达智能科技有限公司 | Anti-aging high-resilience earphone neck hanging wire and preparation method thereof |
| CN115304904B (en) * | 2022-09-08 | 2024-02-20 | 东莞市兴晟达智能科技有限公司 | Aging-resistant high-resilience earphone neck hanging wire and preparation method thereof |
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