A kind of electromagnetic shielding paper based on conductive mof material modification and preparation method thereof
An electromagnetic shielding, MOF technology, applied in the fields of magnetic field/electric field shielding, synthetic cellulose/non-cellulose material pulp/paper, special paper, etc., can solve the temperature resistance and poor mechanical properties of electromagnetic shielding paper, mechanical properties, water resistance Problems such as poor performance and temperature resistance, and difficulty in functional modification of chemical synthetic fibers, to achieve the effect of solving heavy and difficult processing, low cost, and good electromagnetic wave shielding performance
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[0035] The preparation method of the electromagnetic shielding paper modified based on the conductive MOF material of the present invention comprises the following steps:
[0036] Step (1), adding nickel chloride hexahydrate and 2,3,6,7,10,11-hexaaminotriphenylene into deionized water, then adding PI fiber, reacting and drying at room temperature to obtain PI modified by MOF material fiber;
[0037] Step (2), then disperse the PI fiber and the aramid fiber pulp modified by the MOF material in water, and obtain the PI fiber paper-based conductive skeleton modified by the MOF material after stirring, sheeting, pressing and drying;
[0038] Step (3), place the pyrrole aqueous solution at the bottom of the vacuum glass desiccator (without soaking the ceramic plate), and then place the PI fiber paper-based conductive skeleton material modified by the MOF material in FeCl. 3 Immerse in the solution to saturation and take out, and place it on the porcelain plate of the vacuum glass ...
Embodiment 1
[0058] 1.0g of nickel chloride hexahydrate and 0.4g of 2,3,6,7,10,11-hexaaminotriphenylene were added to 40ml of deionized water to make it completely dissolved, and then 2g of PI fiber (3mm, purchased in Jiangsu Austrian Shenxin Materials Co., Ltd.) was added to the mixed solution for in-situ synthesis for 24 h, washed with water for 5 times after filtration, and dried at 65 °C to obtain Ni-MOF / PI fibers.
[0059] Subsequently, 1.32g of Ni-MOF / PI fiber and 0.56g of aramid pulp (water content 84.2%, beating degree of 27°SR, 0.3-0.6mm, purchased from Shenzhen Fiber Valley Co., Ltd.) were dispersed in 400g In water, stirred for 5 min, sheet was made on a sheet machine, then pressed under 0.4 MPa pressure for 5 min, and dried at 105 °C for 10 min to obtain a PI fiber paper-based conductive skeleton modified with MOF material.
[0060] The PI fiber paper-based conductive framework modified by MOF material was mixed in 110 g / L FeCl 3 Immerse in the solution to saturation and take ...
Embodiment 2
[0063] 1.2g of nickel chloride hexahydrate and 0.6g of 2,3,6,7,10,11-hexaaminotriphenylene were added to 40ml of deionized water for complete dissolution, and then 2g of PI fibers were added to the mixture for in situ Synthesize for 12 h, filter and wash with water for 5 times, and dry at 65 °C to obtain Ni-MOF@PI fibers.
[0064] Subsequently, 1.32g of Ni-MOF / PI fiber and 0.56g of aramid pulp obtained were dispersed in 400g of water, stirred for 5min, sheet-making on a tablet machine, and then pressed under 0.4MPa pressure for 5min, at 105°C After drying for 10 min, a PI fiber paper-based conductive framework modified with MOF material was obtained.
[0065] The PI fiber paper-based conductive framework modified by MOF material was mixed in 110 g / L FeCl 3 Immerse in the solution to saturation and take out, then place it above the porcelain plate of the vacuum glass desiccator, put 15g / L pyrrole aqueous solution at the bottom of the vacuum glass desiccator (guarantee not to p...
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