CN114395207A - Silica gel-like material and preparation method thereof - Google Patents
Silica gel-like material and preparation method thereof Download PDFInfo
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- CN114395207A CN114395207A CN202210091266.6A CN202210091266A CN114395207A CN 114395207 A CN114395207 A CN 114395207A CN 202210091266 A CN202210091266 A CN 202210091266A CN 114395207 A CN114395207 A CN 114395207A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 239000000463 material Substances 0.000 title claims abstract description 170
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 210000004243 sweat Anatomy 0.000 claims abstract description 83
- 239000000741 silica gel Substances 0.000 claims abstract description 49
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 49
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims abstract description 20
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 15
- 239000004945 silicone rubber Substances 0.000 claims abstract description 15
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- IUMSDRXLFWAGNT-UHFFFAOYSA-N Dodecamethylcyclohexasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 IUMSDRXLFWAGNT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 22
- -1 polysiloxane Polymers 0.000 claims description 21
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 15
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 12
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 11
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- LVYZJEPLMYTTGH-UHFFFAOYSA-H dialuminum chloride pentahydroxide dihydrate Chemical compound [Cl-].[Al+3].[OH-].[OH-].[Al+3].[OH-].[OH-].[OH-].O.O LVYZJEPLMYTTGH-UHFFFAOYSA-H 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- PKTOVQRKCNPVKY-UHFFFAOYSA-N dimethoxy(methyl)silicon Chemical compound CO[Si](C)OC PKTOVQRKCNPVKY-UHFFFAOYSA-N 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- UHUUYVZLXJHWDV-UHFFFAOYSA-N trimethyl(methylsilyloxy)silane Chemical compound C[SiH2]O[Si](C)(C)C UHUUYVZLXJHWDV-UHFFFAOYSA-N 0.000 claims description 6
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000003756 stirring Methods 0.000 description 12
- 238000004073 vulcanization Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000003746 surface roughness Effects 0.000 description 7
- 238000007654 immersion Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- VFZRCLLDPCNXPS-UHFFFAOYSA-N 2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexasilacyclododecane Chemical compound C[Si]1(C)O[SiH2]O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 VFZRCLLDPCNXPS-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229960001422 aluminium chlorohydrate Drugs 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- YEECOJZAMZEUBB-UHFFFAOYSA-N 2,2,3,3,6,6,7,7-octamethyloctane Chemical group CC(C)(C)C(C)(C)CCC(C)(C)C(C)(C)C YEECOJZAMZEUBB-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical group CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- OATFZMZHCHJBGR-UHFFFAOYSA-N ethenoxyperoxysilane Chemical compound C(=C)OOO[SiH3] OATFZMZHCHJBGR-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials For Medical Uses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the technical field of processing of silica gel-like materials, and particularly discloses a silica gel-like material and a preparation method thereof. The silica gel-like material comprises the following raw materials in parts by weight: SEBS70-120 parts, vinyl triethoxysilane 50-80 parts, methyl vinyl silicone rubber 15-30 parts, dodecamethyl cyclohexasiloxane 10-30 parts, sweat-resistant material 20-40 parts, cotton fiber powder 6-15 parts, aluminum chlorohydrol 6-15 parts, smooth master batch 6-15 parts, naphthenic oil 3-8 parts, cross-linking agent 2-5 parts, and vulcanizing agent 2-5 parts; the preparation method comprises the following steps: fusing SEBS, methyl vinyl silicone rubber and the smooth master batch, adding dodecamethyl cyclohexasiloxane, mixing uniformly, adding other raw materials except a vulcanizing agent, mixing uniformly, adding a vulcanizing agent, and vulcanizing to obtain the silica gel-like material. The imitation silica gel material has the advantage of improving the sweat resistance through the synergistic effect of the raw materials.
Description
Technical Field
The application relates to the technical field of processing of silica gel-like materials, in particular to a silica gel-like material and a preparation method thereof.
Background
The silica gel is mainly used for toys, craft gifts, products with fine patterns, packages, pouring mold products, resin artware and the like, and has elasticity and flexibility. The application range of the silica gel is wide, and the silica gel is more and more frequently appeared in our lives, but the price of the silica gel is expensive, so that the silica gel imitation material is appeared.
The silica gel-like material also has better elasticity and softness, good tensile property, is a nontoxic environment-friendly material, and can also achieve the softness close to the skin of a human body in hand feeling. At present, the silica gel imitation material is usually contacted with human skin in the using process, when the weather is hot, the surface of a human body is easy to sweat, sweat is easy to gather between the silica gel imitation material and the skin, the use of the silica gel imitation material is influenced, and the human body is also uncomfortable, so that the research of the silica gel imitation material is urgently needed.
Disclosure of Invention
In order to improve the sweat resistance of the silica gel-like material, the application provides the silica gel-like material and a preparation method thereof.
In a first aspect, the present application provides an imitation silica gel material, which adopts the following technical scheme:
an imitation silica gel material comprises the following raw materials in parts by weight: SEBS70-120 parts, vinyl triethoxysilane 50-80 parts, methyl vinyl silicone rubber 15-30 parts, dodecamethyl cyclohexasiloxane 10-30 parts, sweat-resistant material 20-40 parts, cotton fiber powder 6-15 parts, aluminum chlorohydrol 6-15 parts, smooth master batch 6-15 parts, naphthenic oil 3-8 parts, cross-linking agent 2-5 parts, and vulcanizing agent 2-5 parts; the sweat-resistant material is dodecyl modified polysiloxane.
By adopting the technical scheme, the silica gel-like material can replace silica gel, is environment-friendly and recyclable, can be recycled for multiple times, has simple process and good skin allergy resistance, is low in cost and energy consumption through the synergistic effect among the raw materials, maximizes the resource utilization, makes a contribution to carbon neutralization, is widely applied, is mainly applied to the field of consumer electronics, such as earphones, Bluetooth earphones, sound boxes and the like, improves the touch feeling and skin-friendly property of the silica gel-like material, also improves the sweat resistance, tensile strength, tear strength and peeling strength, makes the silica gel-like material smoother, further increases the touch feeling, wherein the attenuation rate of the bonding strength of the silica gel-like material after being soaked for 14 days in artificial sweat simulation is 8.0-12.3%, the tensile strength is 6.4-10.8MPa, the tear strength is 10.8-13.5N/mm, the peeling strength is 6.7-11.2N/25mm, the surface roughness is 0.008-0.021 μm.
The SEBS is used as a basic component of the silica gel-like material, has relatively fine and soft hand feeling and relatively weak friction performance, and can ensure that the silica gel-like material has relatively excellent skin-friendly property and relatively excellent elasticity. The methyl vinyl silicone rubber has better high temperature resistance. The vinyl triethoxysilane is applied to the raw material of the silica-like material, so that the dispersibility can be improved, and the tear strength of the silica-like material can be improved. The dodecamethylcyclohexasiloxane can bring soft silky feeling, dryness and no greasy feeling to human skin, and improve the sweat resistance. The cotton fiber powder is applied to the silica gel-like material, so that the air permeability, the skin-friendly property and the elasticity of the silica gel-like material can be improved. The aluminum chlorohydrate is a good sweat-inhibiting active ingredient, belongs to aluminum salt, and also has antibacterial effect and can inhibit sweat smell. The smooth master batch can reduce friction factors among raw materials, further improve the smoothness of the silica gel-like material and improve the skin-friendly property and the touch feeling. Naphthenic oil belongs to a softening agent and can soften raw materials.
The sweat-resistant material is dodecyl modified polysiloxane, the molecular chain segment of the polysiloxane is soft, and the silicon methyl groups are distributed outwards, so that the substrate of the sweat-resistant material has extremely low surface energy and good waterproof sweat resistance. The long-chain dodecyl group is introduced into the polysiloxane chain through the dodecyl modified polysiloxane prepared by compounding, so that the hydrophobicity of the silica gel-like material can be improved, the excellent sweat resistance is realized, the touch feeling can be increased, and the skin-friendly property is improved.
Preferably, the method comprises the following steps: the feed comprises the following raw materials in parts by weight: the anti-sweat and anti-corrosion coating comprises, by weight, 80-105 parts of SEBS, 65-75 parts of vinyl triethoxysilane, 18-25 parts of methyl vinyl silicone rubber, 15-22 parts of dodecamethyl cyclohexasiloxane, 24-35 parts of a sweat resistant material, 8-12 parts of cotton fiber powder, 8-12 parts of aluminum chlorohydrate, 7-13 parts of a smooth master batch, 5-7 parts of naphthenic oil, 3-4 parts of a cross-linking agent and 3-4 parts of a vulcanizing agent.
By adopting the technical scheme, the sweat resistance of the silica gel imitation material can be improved by optimizing the mixing amount of the raw materials.
Preferably, the method comprises the following steps: the vinyl triethoxysilane: the weight ratio of SEBS is 1: (1.3-1.5).
The addition amount of the vinyltriethoxysilane is too small, so that the imitation silica gel material cannot have better tear strength; the addition of the vinyl triethoxysilane is too much, so that crosslinking points in the SEBS are increased, the crosslinking density is increased, the hardness of the silica gel-like material is increased, and finally the skin-friendly performance of the silica gel-like material is poor. By adopting the technical scheme, when the addition amount of the vinyl trioxysilane is in the range, the silica gel-like material can keep good skin-friendly performance, and the tear strength of the silica gel-like material can be enhanced.
Preferably, the method comprises the following steps: the smooth master batch comprises the following components: the weight ratio of SEBS is 1: (7-13).
The addition amount of the smooth master batch is too small, so that the silica gel-like material cannot have a better smoothness degree, and the skin-friendly performance is poor; when the addition amount of the smooth master batch is too much, the friction factor among the raw materials is extremely small, and the flowability of the silica gel imitation material is too high to be easily formed. By adopting the technical scheme, when the weight ratio of the smooth master batch to the SEBS is within the range, the preparation of the silica gel-like material can be facilitated, the smoothness degree of the silica gel-like material can be improved, and the skin-friendly property is improved.
Preferably, the method comprises the following steps: the sweat-resistant material is prepared by the following method: uniformly mixing tetramethylcyclotetrasiloxane, tetramethyldisiloxane, methyldimethoxysilane and tetramethylammonium hydroxide, heating to 140-145 ℃, keeping the temperature, cooling to 65-70 ℃, adding maleic anhydride, uniformly mixing, and centrifuging and drying when the solution is stirred until the viscosity appears, thereby obtaining the sweat-resistant material.
Further, the sweat-resistant material is prepared by adopting the following method: mixing tetramethylcyclotetrasiloxane, tetramethyldisiloxane, methyldimethoxysilane and tetramethylammonium hydroxide, stirring for 30-40min, heating to 140-; wherein, the weight ratio of the tetramethylcyclotetrasiloxane, the tetramethyldisiloxane, the methyldimethoxysilane, the tetramethylammonium hydroxide and the maleic anhydride is (3-5): (3-5): (3-5): (2-4): (6-8).
By adopting the technical scheme and the method for preparing the sweat-resistant material, the raw materials can be mixed more uniformly, the sweat-resistant material can better play a role, and the sweat resistance of the silica gel-like material can be improved.
Preferably, the method comprises the following steps: the sweat-resistant material is pre-treated prior to use using the following method: and (2) putting the silicon dioxide into an ethanol solution, performing ultrasonic dispersion, adding the sweat-resistant material and sodium dodecyl sulfate, uniformly mixing, then aging, centrifuging, taking out the solid, washing and drying to obtain the pretreated sweat-resistant material.
Further, the sweat-resistant material is pretreated before use by the following method: putting silicon dioxide into an ethanol solution with the mass fraction of 60-70%, ultrasonically dispersing for 20-30min under the power of 300-350W, adding a sweat-resistant material and sodium dodecyl sulfate, stirring for 15-25min, then aging for 2-3h, centrifuging for 10-15min at the rotating speed of 4800-5200r/min, taking out a solid, washing for 3-5 times with water, and drying to obtain a pretreated sweat-resistant material;
wherein, the addition amount of the silicon dioxide in each 1L of ethanol solution is 0.2-0.5kg, and the weight ratio of the silicon dioxide, the sweat-resistant material and the sodium dodecyl sulfate is 1: (0.3-0.4): (0.15-0.2).
By adopting the technical scheme, the sweat-resistant material can reduce the surface energy of the silica gel-like material, so that the silica gel-like material has the effects of ventilation and sweat resistance, and the silica dioxide is used for modifying the sweat-resistant material, so that the acid resistance, alkali resistance and salt resistance of the silica gel-like material can be further enhanced, and the sweat resistance of the silica gel-like material is further enhanced.
Preferably, the method comprises the following steps: the smooth master batch is prepared by modifying polyethylene by adopting oleamide and erucamide.
By adopting the technical scheme, the oleamide can reduce the internal friction in the processing process of the imitation silica gel material, thereby playing a role in lubrication and increasing the smoothness of the imitation silica gel material. Erucamide has the functions of smoothness, adhesion resistance and stable processing performance. The oleic acid amide, the erucic acid amide and the polyethylene are jointly prepared into the smooth master batch, so that the smoothness degree of the silica gel-like material can be further improved through the synergistic effect of the oleic acid amide, the erucic acid amide and the polyethylene, and the skin-friendly property is improved.
Preferably, the method comprises the following steps: the smooth master batch is prepared by the following method: evenly mixing oleamide, erucamide and polyethylene, melting, extruding and granulating to obtain the smooth master batch.
Further, the smooth master batch is prepared by the following method: mixing oleamide, erucamide and polyethylene, stirring for 20-30min, melting at the temperature of 120-130 ℃, and then extruding and granulating to obtain smooth master batches; wherein the weight ratio of the oleamide, the erucamide and the polyethylene is 1: 1: (8-12).
By adopting the technical scheme, the smooth master batch is prepared by the method, so that the raw materials are mixed more uniformly, the smooth master batch can better play a role, and the smoothness and the skin-friendly performance of the silica gel imitation material can be improved.
In a second aspect, the application provides a preparation method of an imitation silica gel material, which adopts the following technical scheme:
a preparation method of an imitation silica gel material comprises the following steps:
s1: uniformly mixing SEBS, methyl vinyl silicone rubber and the smooth master batch, melting at the temperature of 180-210 ℃, adding dodecamethylcyclohexasiloxane, and uniformly mixing to obtain a mixture A;
s2: when the temperature of the mixture A is reduced to 70-90 ℃, adding vinyltriethoxysilane, a sweat-resistant material, cotton fiber powder, aluminum chlorohydroxide, naphthenic oil and a crosslinking agent into the mixture, and uniformly mixing to obtain a mixture B;
s3: and adding a vulcanizing agent into the mixture B, and vulcanizing to obtain the silica gel-like material.
Further, the preparation method of the silica gel-like material comprises the following steps:
s1: mixing SEBS, methyl vinyl silicone rubber and the smooth master batch, stirring for 30-40min, melting at the temperature of 180-210 ℃, adding decadimethyl cyclohexasiloxane, and stirring for 20-30min to obtain a mixture A;
s2: when the temperature of the mixture A is reduced to 70-90 ℃, adding vinyltriethoxysilane, a sweat-resistant material, cotton fiber powder, aluminum chlorohydroxide, naphthenic oil and a crosslinking agent into the mixture, and stirring for 1-2 hours to obtain a mixture B;
s3: and adding a vulcanizing agent into the mixture B, sequentially carrying out three times of vulcanization, wherein the first time of vulcanization is at 20-25 ℃, the vulcanization time is 15-25min, the second time of vulcanization is at 150-.
By adopting the technical scheme, the method for preparing the silica gel-like material is beneficial to more uniform mixing of the raw materials, and the raw materials can better play a role, so that the silica gel-like material has better touch and skin-friendly properties, and the sweat resistance of the silica gel-like material can be enhanced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the sweat-resistant material is adopted in the application, the sweat resistance of the imitation silica gel material can be improved, the imitation silica gel material has better skin-friendly performance, and the attenuation rate of the bonding strength of the imitation silica gel material soaked in artificial simulated sweat for 1 day can reach 100%, the attenuation rate of the artificial simulated sweat for 5 days can reach 2.5%, the attenuation rate of the artificial simulated sweat for 9 days can reach 6.1%, and the attenuation rate of the artificial simulated sweat for 14 days can reach 8.0%.
2. In the application, the oleic acid amide and the erucic acid amide are preferably selected to modify the polyethylene to prepare the smooth master batch, and the smoothness and the skin-friendly property of the silica gel-like material are further improved through the synergistic action between the oleic acid amide and the erucic acid amide, so that the surface friction degree of the silica gel-like material can reach 0.008 mu m.
Detailed Description
The present application is described in further detail below with reference to specific contents.
Raw materials
SEBS is G-1651 injection molding grade and is selected from Koteng Polymer trade (Shanghai) Co., Ltd; the vinyltriethoxysilane is selected from Shandong Silicaceae New Material Co; the methyl vinyl silicone rubber is selected from Condites chemical industry (Hubei) Co; the decamethylcyclohexasiloxane is 540-97-6, and is selected from Wohyod chemical industry Co., Ltd; the average particle diameter of the cotton fiber powder is 200 meshes and is selected from Hangzhou high-tech composite materials, Inc.; the aluminum chlorohydrate is selected from Wuhanji industry promotion chemical company, Ltd; the naphthenic oil is selected from constant water Ouda chemical rubber, Limited liability company; the tetramethylcyclotetrasiloxane is selected from Shandong Polymer chemistry, Inc.; the tetramethyldisiloxane is selected from chemical industry Co., Ltd; the methyldimethoxysilane is selected from Jining Sanshi Biotech, Inc.; the maleic anhydride is selected from the chemical industry of Jinan; the oleamide is CAS301-02-0 and is selected from Xin chemical products, Inc., of Henan Ming; erucamide is CAS112-84-5 and is selected from Jiangsu Jiaren chemical Co., Ltd; the polyethylene has a molecular weight of 1400 and is selected from the group consisting of Hepeng biological Shanghai science and technology, Inc.; the cross-linking agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide and is selected from Sen Fiddar chemical Co.Ltd, Suzhou; the vulcanizing agent is trimethylolpropane trimethacrylate and is selected from Shandong Changyao new materials Co.
Preparation example
Preparation example 1
A sweat-resistant material prepared by the following method:
mixing 4kg of tetramethylcyclotetrasiloxane, 4kg of tetramethyldisiloxane, 4kg of methyldimethoxysilane and 3kg of tetramethylammonium hydroxide, stirring for 35min, heating to 142 ℃, keeping the temperature for 25min, cooling to 67 ℃, adding 7kg of maleic anhydride, mixing, centrifuging for 7min at the rotating speed of 3250r/min when the solution is stirred until the solution has viscosity, and drying to obtain the sweat-resistant material.
Preparation example 2
A smooth master batch is prepared by the following method:
mixing 1kg of oleamide, 1kg of erucamide and 10kg of polyethylene, stirring for 25min, melting at 125 ℃, and then extruding and granulating to obtain the smooth master batch.
Examples
Example 1
The raw material proportion of the silica gel-like material is shown in table 1.
Wherein the sweat-resistant material is prepared by the preparation example 1, the smooth master batch is prepared by the preparation example 2, the cross-linking agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide, and the vulcanizing agent is trimethylolpropane trimethacrylate.
A preparation method of an imitation silica gel material comprises the following steps:
s1: mixing SEBS, methyl vinyl silicone rubber and the smooth master batch, stirring for 35min, melting at 195 ℃, adding dodecamethyl cyclohexasiloxane, and stirring for 25min to obtain a mixture A;
s2: when the temperature of the mixture A is reduced to 80 ℃, adding vinyltriethoxysilane, a sweat-resistant material, cotton fiber powder, aluminum chlorohydroxide, naphthenic oil and a crosslinking agent into the mixture, and stirring for 1.5 hours to obtain a mixture B;
s3: and adding a vulcanizing agent into the mixture B, sequentially carrying out three times of vulcanization, wherein the first time of vulcanization is 23 ℃, the vulcanization time is 20min, the second time of vulcanization is 160 ℃, the vulcanization time is 35min, the third time of vulcanization is 225 ℃, the vulcanization time is 1.25h, and then cooling to 26 ℃ to obtain the silica gel-like material.
Examples 2 to 5
The silica gel-like material is different from the silica gel-like material in the raw material ratio shown in Table 1.
TABLE 1 EXAMPLES 1-5 amounts of raw materials (unit: kg) of the imitation silica gel materials
| Raw materials | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| SEBS | 70 | 70 | 70 | 70 | 70 |
| Vinyl triethoxy silane | 65 | 65 | 65 | 65 | 65 |
| Methyl vinyl silicone rubber | 15 | 15 | 15 | 15 | 15 |
| Decamethylcyclohexasiloxane | 10 | 10 | 10 | 10 | 10 |
| Sweat-resistant material | 20 | 24 | 30 | 35 | 40 |
| Cotton fiber powder | 6 | 6 | 6 | 6 | 6 |
| Aluminium chlorohydrate | 6 | 6 | 6 | 6 | 6 |
| Smooth master batch | 6 | 6 | 6 | 6 | 6 |
| Naphthenic oil | 3 | 3 | 3 | 3 | 3 |
| Crosslinking agent | 2 | 2 | 2 | 2 | 2 |
| Vulcanizing agent | 2 | 2 | 2 | 2 | 2 |
Examples 6 to 9
The silica gel-like material is different from the silica gel-like material in the raw material ratio shown in Table 2.
TABLE 2 examples 6-9 amount of each raw material (unit: kg) of the imitation silica gel material
| Raw materials | Example 6 | Example 7 | Example 8 | Example 9 |
| SEBS | 80 | 101.4 | 105 | 120 |
| Vinyl triethoxy silane | 50 | 78 | 75 | 80 |
| Methyl vinyl silicone rubber | 15 | 15 | 15 | 15 |
| Decamethylcyclohexasiloxane | 10 | 10 | 10 | 10 |
| Sweat-resistant material | 40 | 40 | 40 | 40 |
| Cotton fiber powder | 6 | 6 | 6 | 6 |
| Aluminium chlorohydrate | 6 | 6 | 6 | 6 |
| Smooth master batch | 6 | 6 | 6 | 6 |
| Naphthenic oil | 3 | 3 | 3 | 3 |
| Crosslinking agent | 2 | 2 | 2 | 2 |
| Vulcanizing agent | 2 | 2 | 2 | 2 |
Examples 10 to 14
The silica gel-like material is different from the silica gel-like material in the raw material ratio shown in Table 3.
TABLE 3 examples 10-14 blend amounts (unit: kg) of each raw material of the imitation silica gel material
Examples 15 to 18
The silica gel-like material is different from the silica gel-like material in the raw material ratio shown in Table 4.
TABLE 4 examples 15-18 amounts (unit: kg) of various raw materials of the imitation silica gel material
| Raw materials | Example 15 | Example 16 | Example 17 | Example 18 |
| SEBS | 105 | 105 | 105 | 105 |
| Vinyl triethoxy silane | 75 | 75 | 75 | 75 |
| Methyl vinyl silicone rubber | 18 | 20 | 25 | 30 |
| Decamethylcyclohexasiloxane | 15 | 20 | 22 | 30 |
| Sweat-resistant material | 40 | 40 | 40 | 40 |
| Cotton fiber powder | 8 | 10 | 12 | 15 |
| Aluminium chlorohydrate | 8 | 10 | 12 | 15 |
| Smooth master batch | 10.5 | 10.5 | 10.5 | 10.5 |
| Naphthenic oil | 5 | 6 | 7 | 8 |
| Crosslinking agent | 3 | 3.5 | 4 | 5 |
| Vulcanizing agent | 3 | 3.5 | 4 | 5 |
Example 19
A simulated silica gel material which differs from example 16 in that the sweat resistant material in the simulated silica gel material is pre-treated prior to use by the following method:
putting silicon dioxide into an ethanol solution with the mass fraction of 65%, performing ultrasonic dispersion for 25min under the power of 325W, adding a sweat-resistant material and sodium dodecyl sulfate, stirring for 20min, then aging for 2.5h, centrifuging for 12min at the rotating speed of 5000r/min, taking out a solid, washing for 4 times with water, and drying to obtain a pretreated sweat-resistant material; wherein the addition amount of the silicon dioxide in each 1L of ethanol solution is 0.25kg, and the weight ratio of the silicon dioxide, the sweat-resistant material and the sodium dodecyl sulfate is 1: 0.35: 0.17.
comparative example
Comparative example 1
A silica gel-like material which differs from that of example 1 in that no sweat-resistant material is added to the starting material of the silica gel-like material.
Comparative example 2
The silica gel-like material is different from the silica gel-like material in the embodiment 1 in that the raw material of the silica gel-like material is not added with the smooth master batch.
Comparative example 3
A simulated silica gel material which differs from the one in example 1 in that the smooth masterbatch of the simulated silica gel material is replaced by equal amounts of oleamide instead of erucamide.
Comparative example 4
A simulated silica gel material differing from example 1 in that the smooth masterbatch of the simulated silica gel material is replaced equivalently in oleamide with erucamide.
Performance test
The silica gel-like materials of examples 1 to 19 and comparative examples 1 to 4 were placed in artificial simulated sweat, sealed with a PE bag, placed in a constant temperature and humidity chamber at 45 ℃ and 55% RH for 14 days, taken out, dried, and subjected to the following performance tests, wherein the artificial simulated sweat was formulated with sodium chloride: 7g, urea: 1g, 85% lactic acid: 4g, diluting the mixture to 1000ml by using a methanol solution with the mass fraction of 50%: sweat resistance: the decay rate of the adhesive strength with the immersion time of the artificial simulated sweat was used as a representative, and the adhesive strength of the silicone-like material was measured in accordance with GB/T11211-2009 two-plate method for measuring the adhesive strength between vulcanized rubber or thermoplastic rubber and metal, and the results are shown in Table 5.
Tensile strength, tear strength: the tensile strength and tear strength of the simulated silica gel material were measured according to GB/T9871-2008 "determination of aging Properties of vulcanized rubber or thermoplastic rubber", and the results are shown in Table 6.
Peel strength: the peel strength of the simulated silica gel material was measured according to HB5249-1993 test method for 180 ℃ peel strength of room temperature vulcanization sealant, and the results are shown in Table 6.
Surface roughness: the surface roughness of the simulated silica gel material was measured in accordance with HB8233-2002 "requirements for dimensional limit deviation and surface roughness of rubber parts", and the results are shown in Table 6.
TABLE 5 test results
TABLE 6 test results
It can be seen from table 5 and table 6 that the silicone-like material of the present application, through the synergistic effect between the raw materials, can make the feel and skin-friendly property of the silicone-like material, further improve the sweat resistance, tensile strength, tear strength, and peel strength, and also make the silicone-like material smoother, further increase the feel, wherein the decay rate of the adhesive strength of the silicone-like material after being soaked in artificial simulated sweat for 14 days is 8.0-12.3%, the tensile strength is 6.4-10.8MPa, the tear strength is 10.8-13.5N/mm, the peel strength is 6.7-11.2N/25mm, and the surface roughness is 0.008-0.021 μm.
As can be seen from example 1 and comparative example 1 in Table 5, the decay rate of the adhesive strength of the simulated silica gel material in example 1 after being soaked in artificial simulated sweat for 1 day is 100%, the decay rate of the simulated silica gel material in soaking for 5 days is 6.2%, the decay rate of the simulated silica gel material in soaking for 9 days is 9.9%, and the decay rate of the simulated silica gel material in soaking for 14 days is 12.3%, which is superior to that of comparative example 1, and shows that the simulated silica gel material is more suitable to be added with the sweat-resistant material, so that the simulated silica gel material can show better sweat resistance.
As is apparent from examples 1 to 5 in Table 5, the decay rate of the adhesive strength of the pseudo silica gel material in example 5 after immersion in artificial simulated sweat for 1 day was 100%, the decay rate of the artificial simulated sweat for 5 days was 3.5%, the decay rate of the artificial simulated sweat for 9 days was 7.6%, and the decay rate of the artificial simulated sweat for 14 days was 9.6%, which is superior to those of the other examples, and it was found that the addition amount of the sweat-resistant material in example 5 was more suitable, and the pseudo silica gel material could exhibit more excellent sweat resistance.
As can be seen from examples 16 and 19 in table 5, the decay rate of the adhesive strength of the pseudo silica gel material in example 19 after immersion in artificial simulated sweat for 1 day was 100%, the decay rate of 5 days after immersion was 2.5%, the decay rate of 9 days after immersion was 6.1%, and the decay rate of 14 days after immersion was 8.0%, which is superior to example 16, indicating that the sweat-resistant material was more suitably pretreated before use, and the pseudo silica gel material could exhibit more excellent sweat resistance.
As can be seen from example 1 and comparative examples 2 to 4 in Table 6, the surface roughness of example 1 is 0.021 μm, which is better than that of comparative examples 2 to 4, and it is shown that the addition of the smooth master batch to the silica gel-like material is more suitable, so that the surface of the silica gel-like material can be smoother, and the improvement of touch and skin-friendly property is facilitated.
As can be seen from examples 6-9 in Table 6, the tensile strength of 10.8MPa, the tear strength of 13.7N/mm and the peel strength of 11.2N/25mm in example 8 are superior to those of other examples, which shows that the weight ratio of vinyltriethoxysilane to SEBS in example 8 is more suitable for enhancing the tensile strength, the tear strength and the peel strength of the silicone rubber-like material.
As can be seen from examples 10 to 14 in Table 6, the surface roughness of example 12 is 0.008 μm, which is better than that of other examples, and it is shown that the weight ratio of the smooth master batch and SEBS in example 12 is more appropriate, so that the silica gel-like material can show better smoothness and improve skin-friendly property.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of the present application is not limited by the embodiments of the present application, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. An imitation silica gel material is characterized in that: the feed comprises the following raw materials in parts by weight: SEBS70-120 parts, vinyl triethoxysilane 50-80 parts, methyl vinyl silicone rubber 15-30 parts, dodecamethyl cyclohexasiloxane 10-30 parts, sweat-resistant material 20-40 parts, cotton fiber powder 6-15 parts, aluminum chlorohydrol 6-15 parts, smooth master batch 6-15 parts, naphthenic oil 3-8 parts, cross-linking agent 2-5 parts, and vulcanizing agent 2-5 parts; the sweat-resistant material is dodecyl modified polysiloxane.
2. The silica gel-like material according to claim 1, wherein: the feed comprises the following raw materials in parts by weight: the anti-sweat and anti-corrosion coating comprises, by weight, 80-105 parts of SEBS, 65-75 parts of vinyl triethoxysilane, 18-25 parts of methyl vinyl silicone rubber, 15-22 parts of dodecamethyl cyclohexasiloxane, 24-35 parts of a sweat resistant material, 8-12 parts of cotton fiber powder, 8-12 parts of aluminum chlorohydrate, 7-13 parts of a smooth master batch, 5-7 parts of naphthenic oil, 3-4 parts of a cross-linking agent and 3-4 parts of a vulcanizing agent.
3. The silica gel-like material according to claim 1, wherein: the vinyl triethoxysilane: the weight ratio of SEBS is 1: (1.3-1.5).
4. The silica gel-like material according to claim 1, wherein: the smooth master batch comprises the following components: the weight ratio of SEBS is 1: (7-13).
5. The silica gel-like material according to claim 1, wherein: the sweat-resistant material is prepared by the following method: uniformly mixing tetramethylcyclotetrasiloxane, tetramethyldisiloxane, methyldimethoxysilane and tetramethylammonium hydroxide, heating to 140-145 ℃, keeping the temperature, cooling to 65-70 ℃, adding maleic anhydride, uniformly mixing, and centrifuging and drying when the solution is stirred until the viscosity appears, thereby obtaining the sweat-resistant material.
6. The silica gel-like material according to claim 1, wherein: the sweat-resistant material is pre-treated prior to use using the following method: and (2) putting the silicon dioxide into an ethanol solution, performing ultrasonic dispersion, adding the sweat-resistant material and sodium dodecyl sulfate, uniformly mixing, then aging, centrifuging, taking out the solid, washing and drying to obtain the pretreated sweat-resistant material.
7. The silica gel-like material according to claim 1, wherein: the smooth master batch is prepared by modifying polyethylene by adopting oleamide and erucamide.
8. The silica gel-like material according to claim 7, wherein: the smooth master batch is prepared by the following method: evenly mixing oleamide, erucamide and polyethylene, melting, extruding and granulating to obtain the smooth master batch.
9. A method for preparing the silica gel-like material according to any one of claims 1 to 8, comprising the steps of:
s1: uniformly mixing SEBS, methyl vinyl silicone rubber and the smooth master batch, melting at the temperature of 180-210 ℃, adding dodecamethylcyclohexasiloxane, and uniformly mixing to obtain a mixture A;
s2: when the temperature of the mixture A is reduced to 70-90 ℃, adding vinyltriethoxysilane, a sweat-resistant material, cotton fiber powder, aluminum chlorohydroxide, naphthenic oil and a crosslinking agent into the mixture, and uniformly mixing to obtain a mixture B;
s3: and adding a vulcanizing agent into the mixture B, and vulcanizing to obtain the silica gel-like material.
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| CN106147109A (en) * | 2016-06-30 | 2016-11-23 | 中广核高新核材集团（东莞）祈富新材料有限公司 | A kind of soft dry-touch type thermoplastic elastic material and preparation method thereof |
| 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 |
| CN109721930A (en) * | 2018-11-23 | 2019-05-07 | 东莞捷佳塑胶科技有限公司 | The manufacture craft of imitative silica gel feel olefin hydrocarbons thermoplasticity elastic body |
| CN110564382A (en) * | 2019-09-29 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | salt-resistant lubricant for drilling fluid and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106147109A (en) * | 2016-06-30 | 2016-11-23 | 中广核高新核材集团（东莞）祈富新材料有限公司 | A kind of soft dry-touch type thermoplastic elastic material and preparation method thereof |
| 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 |
| CN109721930A (en) * | 2018-11-23 | 2019-05-07 | 东莞捷佳塑胶科技有限公司 | The manufacture craft of imitative silica gel feel olefin hydrocarbons thermoplasticity elastic body |
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