CN100406484C - Graphite/potassium polyacrylate conductive hydrogel and preparation method thereof - Google Patents
Graphite/potassium polyacrylate conductive hydrogel and preparation method thereof Download PDFInfo
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- CN100406484C CN100406484C CNB2006100378010A CN200610037801A CN100406484C CN 100406484 C CN100406484 C CN 100406484C CN B2006100378010 A CNB2006100378010 A CN B2006100378010A CN 200610037801 A CN200610037801 A CN 200610037801A CN 100406484 C CN100406484 C CN 100406484C
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 64
- 239000010439 graphite Substances 0.000 title claims abstract description 64
- 229920005614 potassium polyacrylate Polymers 0.000 title claims abstract description 56
- 239000000017 hydrogel Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 72
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000178 monomer Substances 0.000 claims abstract description 44
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 14
- 239000000047 product Substances 0.000 claims abstract description 13
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 11
- 239000003999 initiator Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 7
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- 238000000746 purification Methods 0.000 claims description 14
- 238000007334 copolymerization reaction Methods 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- VAPQAGMSICPBKJ-UHFFFAOYSA-N 2-nitroacridine Chemical compound C1=CC=CC2=CC3=CC([N+](=O)[O-])=CC=C3N=C21 VAPQAGMSICPBKJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 2
- 238000001764 infiltration Methods 0.000 claims 2
- 239000004020 conductor Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract 1
- 239000011265 semifinished product Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 16
- 229920001940 conductive polymer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
本发明公开了一种石墨/聚丙烯酸钾导电水凝胶及其制备方法，其采用经提纯除去阻聚剂的丙烯酸单体，在适当的温度和搅拌条件下以适当比例向丙烯酸单体中加入氢氧化钾溶液；加入超细石墨粉体；加入适量的交联剂N，N′-亚甲基双丙烯酰胺、引发剂过硫酸钾，控制适当的温度，在搅拌条件下让聚合反应进行，形成含水量较高的半成品半产品经干燥、粉碎、真空干燥后得到石墨/聚丙烯酸钾吸水性聚合物，该聚合物吸收水或吸收0.9wt%的NaCl溶液后形成的石墨/聚丙烯酸钾导电水凝胶，所形成的石墨/聚丙烯酸钾导电水凝胶的电导率处于导体级，且制备工艺简单，成本低廉，有望在电子元件、化学传感器、抗静电涂料、磁屏蔽材料、导电材料领域有广泛的应用。The invention discloses a graphite/potassium polyacrylate conductive hydrogel and a preparation method thereof. The acrylic acid monomer is purified and removed from a polymerization inhibitor, and is added to the acrylic acid monomer in an appropriate proportion under appropriate temperature and stirring conditions. Potassium hydroxide solution; adding ultrafine graphite powder; adding an appropriate amount of crosslinking agent N, N'-methylenebisacrylamide, initiator potassium persulfate, controlling the appropriate temperature, and allowing the polymerization reaction to proceed under stirring conditions. Form a semi-finished product with a higher water content. The semi-product is dried, pulverized, and vacuum-dried to obtain a graphite/potassium polyacrylate water-absorbing polymer. Hydrogel, the conductivity of the formed graphite/potassium polyacrylate conductive hydrogel is at the conductor level, and the preparation process is simple and the cost is low. It is expected to be used in the fields of electronic components, chemical sensors, antistatic coatings, magnetic shielding materials, and conductive materials. There are a wide range of applications.
Description
技术领域 technical field
本发明涉及一种导电水凝胶，属于新材料技术领域，尤其涉及一种石墨/聚丙烯酸钾导电水凝胶及其制备方法。The invention relates to a conductive hydrogel, which belongs to the technical field of new materials, in particular to a graphite/potassium polyacrylate conductive hydrogel and a preparation method thereof.
背景技术 Background technique
早在1862年，英国伦敦医学专科学校的HLetheby就开始了对导电高分子的探讨，进入20世纪70年代，日本的白川英树意外合成出聚乙炔导电薄膜，从此打通了实现有机聚合物导电的通道。2000年10月10日瑞典皇家科学院将化学最高荣誉授予对研究导电聚合物具有突出贡献的三位科学家。目前尚无人对吸水性聚合物吸水后制备导电水凝胶做过研究。As early as 1862, HLetheby of the London School of Medicine in the UK began to explore conductive polymers. In the 1970s, Hideki Shirakawa of Japan accidentally synthesized polyacetylene conductive films, and since then opened the way to realize the conduction of organic polymers. aisle. On October 10, 2000, the Royal Swedish Academy of Sciences awarded the highest honor in chemistry to three scientists who have made outstanding contributions to the study of conductive polymers. At present, no one has done research on the preparation of conductive hydrogels after absorbing water from water-absorbing polymers.
发明内容 Contents of the invention
本发明的目的在于提供一种价格低廉、制备简单、导电性高的石墨/聚丙烯酸钾导电水凝胶及其制备方法。The object of the present invention is to provide a graphite/potassium polyacrylate conductive hydrogel with low price, simple preparation and high conductivity and a preparation method thereof.
本发明的技术方案是这样的：石墨/聚丙烯酸钾导电水凝胶，是以丙烯酸单体和石墨粉体为基本原料，通过接枝共聚反应制备一种聚合物吸收蒸馏水后得到的导电水凝胶。The technical scheme of the present invention is as follows: graphite/potassium polyacrylate conductive hydrogel is based on acrylic acid monomer and graphite powder, and a conductive hydrogel obtained by preparing a polymer through graft copolymerization after absorbing distilled water glue.
石墨/聚丙烯酸钾导电水凝胶的制备方法，通过下列步骤实现：The preparation method of graphite/potassium polyacrylate conductive hydrogel is realized through the following steps:
第一步，丙烯酸单体的纯化：采用市场上购买的工业纯丙烯酸单体，经提纯除去阻聚剂。The first step, the purification of acrylic acid monomers: adopt commercially pure acrylic acid monomers purchased on the market, and remove the polymerization inhibitor through purification.
第二步，丙烯酸钾的制备：按丙烯酸∶水的质量比为1.5～1∶1，在水中溶解经步骤一提纯后的丙烯酸，形成丙烯酸单体溶液；在搅拌条件下向此丙烯酸单体溶液中加入氢氧化钾，氢氧化钾与丙烯酸的摩尔比为70％～80％，使中和反应进行完全。The second step, the preparation of potassium acrylate: by acrylic acid: the mass ratio of water is 1.5～1: 1, dissolves the acrylic acid after step one purification in water, forms acrylic acid monomer solution; Add this acrylic acid monomer solution under stirring condition Potassium hydroxide is added in the mixture, and the molar ratio of potassium hydroxide to acrylic acid is 70% to 80%, so that the neutralization reaction is carried out completely.
第三步，石墨粉体的加入：在一定的搅拌速度下，加入丙烯酸单体重量4％～6％的石墨粉体于中和后的单体溶液中，充分浸润，分散。The third step is adding graphite powder: at a certain stirring speed, add graphite powder with 4%-6% weight of acrylic acid monomer into the neutralized monomer solution, fully infiltrate and disperse.
第四步，接枝共聚：加入丙烯酸重量0.12％～0.15％的交联剂，丙烯酸重量1.4％～1.6％的引发剂，控制反应温度在75℃～85℃，在搅拌条件下让聚合反应进行完全，形成含水量较高的半产品石墨/聚丙烯酸钾吸水性聚合物。The fourth step, graft copolymerization: add 0.12% to 0.15% of acrylic acid weight of crosslinking agent, 1.4% to 1.6% of acrylic acid weight of initiator, control the reaction temperature at 75°C to 85°C, and let the polymerization reaction proceed under stirring conditions Completely, a semi-product graphite/potassium polyacrylate water-absorbing polymer with a higher water content is formed.
第五步，半产品经洗涤，干燥，粉碎后得到干燥石墨/聚丙烯酸钾吸水性聚合物。In the fifth step, the semi-product is washed, dried, and pulverized to obtain dry graphite/potassium polyacrylate water-absorbing polymer.
第六步，干燥的石墨/聚丙烯酸钾吸水性聚合物吸收蒸馏水后便得到最终产品石墨/聚丙烯酸钾导电水凝胶。In the sixth step, after the dry graphite/potassium polyacrylate water-absorbing polymer absorbs distilled water, the final product graphite/potassium polyacrylate conductive hydrogel is obtained.
上述交联剂为N，N′-亚甲基双丙烯酰胺。The above-mentioned crosslinking agent is N,N'-methylenebisacrylamide.
上述引发剂为过硫酸钾。Above-mentioned initiator is potassium persulfate.
上述石墨粉体的粒径为36um。The particle size of the above-mentioned graphite powder is 36um.
石墨/聚丙烯酸钾导电水凝胶，是以丙烯酸单体和石墨粉体为基本原料，通过接枝共聚反应制备一种聚合物吸收0.8wt％～1.0wt％NaCl溶液后得到的导电水凝胶。Graphite/potassium polyacrylate conductive hydrogel is based on acrylic acid monomer and graphite powder, and a conductive hydrogel obtained by preparing a polymer after absorbing 0.8wt% to 1.0wt% NaCl solution through graft copolymerization .
石墨/聚丙烯酸钾导电水凝胶的制备方法，通过下列步骤实现：The preparation method of graphite/potassium polyacrylate conductive hydrogel is realized through the following steps:
第一步，丙烯酸单体的纯化：采用市场上购买的工业纯丙烯酸单体，经提纯除去阻聚剂。The first step, the purification of acrylic acid monomers: adopt commercially pure acrylic acid monomers purchased on the market, and remove the polymerization inhibitor through purification.
第二步，丙烯酸钾的制备：按丙烯酸∶水的质量比为1.5～1∶1，在水中溶解经步骤一提纯后的丙烯酸，形成丙烯酸单体溶液；在搅拌条件下向此丙烯酸单体溶液中加入氢氧化钾，氢氧化钾与丙烯酸的摩尔比为70％～80％，使中和反应进行完全。The second step, the preparation of potassium acrylate: by acrylic acid: the mass ratio of water is 1.5～1: 1, dissolves the acrylic acid after step one purification in water, forms acrylic acid monomer solution; Add this acrylic acid monomer solution under stirring condition Potassium hydroxide is added in the mixture, and the molar ratio of potassium hydroxide to acrylic acid is 70% to 80%, so that the neutralization reaction is carried out completely.
第三步，石墨粉体的加入：在一定的搅拌速度下，分别加入丙烯酸单体重量45％～55％的石墨粉体于中和后的单体溶液中，充分浸润，分散。The third step, adding graphite powder: at a certain stirring speed, respectively add graphite powder with 45%-55% weight of acrylic acid monomer into the neutralized monomer solution, fully infiltrate and disperse.
第四步，接枝共聚：加入丙烯酸重量0.12％～0.15％的交联剂，丙烯酸重量1.4％～1.6％的引发剂，控制反应温度在75℃～85℃，在搅拌条件下让聚合反应进行完全，形成含水量较高的半产品石墨/聚丙烯酸钾吸水性聚合物。The fourth step, graft copolymerization: add 0.12% to 0.15% of acrylic acid weight of crosslinking agent, 1.4% to 1.6% of acrylic acid weight of initiator, control the reaction temperature at 75°C to 85°C, and let the polymerization reaction proceed under stirring conditions Completely, a semi-product graphite/potassium polyacrylate water-absorbing polymer with a higher water content is formed.
第五步，半产品经洗涤，干燥，粉碎后得到干燥石墨/聚丙烯酸钾吸水性聚合物。In the fifth step, the semi-product is washed, dried, and pulverized to obtain dry graphite/potassium polyacrylate water-absorbing polymer.
第六步，干燥的石墨/聚丙烯酸钾吸水性聚合物吸收0.8wt％～1.0wt％NaCl溶液后便得到最终产品石墨/聚丙烯酸钾导电水凝胶。In the sixth step, the dry graphite/potassium polyacrylate water-absorbing polymer absorbs 0.8wt%-1.0wt% NaCl solution to obtain the final graphite/potassium polyacrylate conductive hydrogel.
上述交联剂为N，N′-亚甲基双丙烯酰胺。The above-mentioned crosslinking agent is N,N'-methylenebisacrylamide.
上述引发剂为过硫酸钾。Above-mentioned initiator is potassium persulfate.
上述石墨粉体的粒径为36um。The particle size of the above-mentioned graphite powder is 36um.
石墨是电的良导体，适量超细石墨粉的加入能显著提高高吸水性树脂的导电性，使吸水树脂由绝缘体变为导体甚至良导体，为吸水导电聚合物的发展开通了广阔的前景，具有较高的研究和应用价值。本发明中，石墨/聚丙烯酸钾吸水导电聚合物在石墨添加量为4％～6％时，吸水后所生成的石墨/聚丙烯酸钾导电水凝胶的电导率可达7.3ms/cm；在石墨添加量为45％-55％时，吸0.8wt％～1.0wt％的NaCl溶液后所生成的石墨/聚丙烯酸钾导电水凝胶的电导率大于300ms/cm。石墨/聚丙烯酸钾导电水凝胶的电导率处于导体级，且制备工艺简单，成本低廉。Graphite is a good conductor of electricity. The addition of an appropriate amount of ultra-fine graphite powder can significantly improve the conductivity of superabsorbent resins, making water-absorbent resins change from insulators to conductors or even good conductors, opening up broad prospects for the development of water-absorbing conductive polymers. It has high research and application value. In the present invention, when the amount of graphite/potassium polyacrylate water-absorbing conductive polymer is 4% to 6%, the conductivity of the graphite/potassium polyacrylate conductive hydrogel generated after absorbing water can reach 7.3ms/cm; When the amount of graphite added is 45%-55%, the conductivity of the graphite/potassium polyacrylate conductive hydrogel formed after absorbing 0.8wt%-1.0wt% NaCl solution is greater than 300ms/cm. The conductivity of the graphite/potassium polyacrylate conductive hydrogel is at the conductor level, and the preparation process is simple and the cost is low.
具体实施方式 Detailed ways
实施例一：Embodiment one:
本发明的石墨/聚丙烯酸钾导电水凝胶，是以丙烯酸单体和粒径为36 um的超细石墨粉体为基本原料，通过接枝共聚反应制备石墨/聚丙烯酸钾吸水性聚合物吸收蒸馏水饱和后得到的导电水凝胶。The graphite/potassium polyacrylate conductive hydrogel of the present invention uses acrylic acid monomers and ultrafine graphite powders with a particle size of 36 um as basic raw materials to prepare graphite/potassium polyacrylate water-absorbing polymers through graft copolymerization. Conductive hydrogels obtained after saturation with distilled water.
本发明的石墨/聚丙烯酸钾导电水凝胶的制备方法，通过如下步骤实现：The preparation method of graphite/potassium polyacrylate conductive hydrogel of the present invention is realized through the following steps:
第一，采用工业纯丙烯酸单体纯化，经真空减压蒸馏或吸附提纯除去阻聚剂。First, use industrially pure acrylic acid monomers to purify, and remove the polymerization inhibitor through vacuum distillation or adsorption purification.
第二，按丙烯酸∶水的质量比为1∶1，将经步骤一提纯后的丙烯酸溶解于水，形成丙烯酸单体溶液。在搅拌条件下向丙烯酸单体溶液中加入氢氧化钾溶液，氢氧化钾与丙烯酸的摩尔比为75％，使中和反应进行完全。Second, according to the mass ratio of acrylic acid:water of 1:1, the acrylic acid purified in step 1 is dissolved in water to form an acrylic acid monomer solution. Add potassium hydroxide solution to the acrylic acid monomer solution under stirring condition, the molar ratio of potassium hydroxide and acrylic acid is 75%, so that the neutralization reaction is completed.
第三，在强烈搅拌下，加入丙烯酸单体重量5％的石墨粉体于中和后的单体混合溶液中，充分浸润，分散。Thirdly, under strong stirring, add graphite powder of 5% by weight of acrylic acid monomer into the neutralized monomer mixed solution, fully infiltrate and disperse.
第四，加入丙烯酸重量的0.14％的交联剂N，N′-亚甲基双丙烯酰胺、丙烯酸重量的1.5％的引发剂过硫酸钾，控制反应温度在75℃～85℃，在搅拌条件下让聚合反应进行完全，形成含水量较高的半产品石墨/聚丙烯酸钾吸水性聚合物。Fourth, add 0.14% of the weight of acrylic acid crosslinking agent N, N'-methylenebisacrylamide, 1.5% of the weight of acrylic acid initiator potassium persulfate, control the reaction temperature at 75 ° C to 85 ° C, under stirring conditions Allow the polymerization reaction to complete to form a semi-product graphite/potassium polyacrylate water-absorbing polymer with a higher water content.
第五，半产品经洗涤，干燥，粉碎，得到干燥的石墨/聚丙烯酸钾吸水性聚合物。Fifth, the semi-product is washed, dried, and pulverized to obtain a dry graphite/potassium polyacrylate water-absorbing polymer.
第六，干燥石墨/聚丙烯酸钾吸水性聚合物吸收蒸馏水饱和后得到最终产品石墨/聚丙烯酸钾导电水凝胶。Sixth, dry the graphite/potassium polyacrylate water-absorbing polymer to absorb and saturate with distilled water to obtain the final graphite/potassium polyacrylate conductive hydrogel.
通过上述方法，可获得石墨掺入量为5％，吸水后电导率为7.3ms/cm石墨/聚丙烯酸钾导电水凝胶。Through the above method, graphite/potassium polyacrylate conductive hydrogel with a graphite doping amount of 5% and a conductivity of 7.3 ms/cm after water absorption can be obtained.
实施例二：Embodiment two:
本发明的石墨/聚丙烯酸钾导电水凝胶，是以丙烯酸单体和粒径为36 um的超细石墨粉体为基本原料，通过接枝共聚反应制备石墨/聚丙烯酸钾吸水性聚合物吸收0.9wt％NaCl溶液饱和后得到的导电水凝胶。The graphite/potassium polyacrylate conductive hydrogel of the present invention uses acrylic acid monomers and ultrafine graphite powders with a particle size of 36 um as basic raw materials to prepare graphite/potassium polyacrylate water-absorbing polymers through graft copolymerization. Conductive hydrogel obtained after saturation of 0.9wt% NaCl solution.
本发明的石墨/聚丙烯酸钾导电水凝胶的制备方法，通过如下步骤实现：The preparation method of graphite/potassium polyacrylate conductive hydrogel of the present invention is realized through the following steps:
第一，采用工业纯丙烯酸单体纯化，经真空减压蒸馏或吸附提纯除去阻聚剂。First, use industrially pure acrylic acid monomers to purify, and remove the polymerization inhibitor through vacuum distillation or adsorption purification.
第二，按丙烯酸∶水的质量比为1∶1，将经步骤一提纯后的丙烯酸溶解于水，形成丙烯酸单体溶液。在搅拌条件下向丙烯酸单体溶液中加入氢氧化钾溶液，氢氧化钾与丙烯酸的摩尔比为75％，使中和反应进行完全。Second, according to the mass ratio of acrylic acid:water of 1:1, the acrylic acid purified in step 1 is dissolved in water to form an acrylic acid monomer solution. Add potassium hydroxide solution to the acrylic acid monomer solution under stirring condition, the molar ratio of potassium hydroxide and acrylic acid is 75%, so that the neutralization reaction is completed.
第三，在强烈搅拌下，加入丙烯酸单体重量50％的石墨粉体于中和后的单体混合溶液中，充分浸润，分散。Thirdly, under strong stirring, add graphite powder with 50% weight of acrylic acid monomer into the neutralized monomer mixed solution, fully infiltrate and disperse.
第四，加入丙烯酸重量的0.14％的交联剂N，N′-亚甲基双丙烯酰胺、丙烯酸重量的1.5％的引发剂过硫酸钾，控制反应温度在75℃～85℃，在搅拌条件下让聚合反应进行完全，形成含水量较高的半产品石墨/聚丙烯酸钾吸水性聚合物。Fourth, add 0.14% of the weight of acrylic acid crosslinking agent N, N'-methylenebisacrylamide, 1.5% of the weight of acrylic acid initiator potassium persulfate, control the reaction temperature at 75 ° C to 85 ° C, under stirring conditions Allow the polymerization reaction to complete to form a semi-product graphite/potassium polyacrylate water-absorbing polymer with a higher water content.
第五，半产品经洗涤，干燥，粉碎，得到干燥的石墨/聚丙烯酸钾吸水性聚合物。Fifth, the semi-product is washed, dried, and pulverized to obtain a dry graphite/potassium polyacrylate water-absorbing polymer.
第六，干燥石墨/聚丙烯酸钾吸水性聚合物吸收0.9wt％NaCl溶液饱和后得到最终产品石墨/聚丙烯酸钾导电水凝胶。Sixth, the dry graphite/potassium polyacrylate water-absorbing polymer is saturated with 0.9 wt% NaCl solution to obtain the final graphite/potassium polyacrylate conductive hydrogel.
通过上述方法，可获得石墨掺入量为50％，吸0.9wt％NaCl溶液后的电导率大于300ms/cm的石墨/聚丙烯酸钾导电水凝胶。Through the above method, the graphite/potassium polyacrylate conductive hydrogel with a graphite doping amount of 50% and a conductivity greater than 300 ms/cm after absorbing 0.9 wt % NaCl solution can be obtained.
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| CN1320666A (en) * | 2000-04-21 | 2001-11-07 | 烟台西特电子化工材料有限公司 | Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof |
| CN1382746A (en) * | 2001-04-26 | 2002-12-04 | 三星Sdi株式会社 | Polymer gel electrolyte and lithium cell using same |
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| US20050036020A1 (en) * | 2003-08-15 | 2005-02-17 | Huawen Li | Electrochemical sensor ink compositions, electrodes, and uses thereof |
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| CN1320666A (en) * | 2000-04-21 | 2001-11-07 | 烟台西特电子化工材料有限公司 | Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof |
| CN1382746A (en) * | 2001-04-26 | 2002-12-04 | 三星Sdi株式会社 | Polymer gel electrolyte and lithium cell using same |
| KR20040038442A (en) * | 2002-11-01 | 2004-05-08 | 대주전자재료 주식회사 | Conductive hydrogel for a fuel cell employing a solid polymer electrolytic membrane |
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