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Thermal response ceramic fire-resistant explosion-proof pad and preparation method thereof
The invention discloses a thermal response ceramic fire-resistant explosion-proof pad and a preparation method thereof.The preparation method specifically comprises the steps that firstly, inorganic nanofibers and a fluxing agent are subjected to ultrasonic dispersion to form uniform dispersion liquid, then a freezing binder is added into the dispersion liquid, and inorganic nanofiber aerogel is obtained through freeze drying; and finally, sequentially carrying out inorganic nanofiber aerogel pre-impregnation, organic silica gel impregnation, solvent replacement and drying and curing to obtain the thermal response ceramic fire-resistant explosion-proof pad. The explosion-proof pad can wrap an inorganic material three-dimensional network through physical and chemical crosslinking of the PDMS elastomer at a low temperature, certain elastic support is provided, and therefore the explosion-proof pad has high toughness and excellent impact resistance, PDMS on the surface can be cracked at a high temperature to generate a compact ceramic layer, internal materials can be isolated from external high-temperature flames and oxygen, and the explosion-proof pad has a good anti-explosion effect. Therefore, the flame-retardant and fire-resistant effects are achieved, and wide application prospects are achieved in the fields of battery protection, cable fire prevention, heat insulation, impact resistance and the like.
本发明公开了一种热响应陶瓷化耐火防爆垫及其制备方法，具体为首先将无机纳米纤维、助熔剂超声分散形成均匀的分散液，然后向分散液中加入冷冻粘结剂，经过冷冻干燥获得无机纳米纤维气凝胶；最后依次经过无机纳米纤维气凝胶预浸渍、浸渍有机硅胶、溶剂置换、干燥固化得到热响应陶瓷化耐火防爆垫；该防爆垫能够在低温下利用PDMS弹性体物理和化学交联包裹无机材料三维网络，提供了一定的弹性支撑，从而具有高韧性、优异的抗冲击性，在高温下表面的PDMS会发生裂解生成致密的陶瓷层，能够将内部材料与外部高温火焰和氧气隔绝，从而实现阻燃、耐火的效果，在电池防护、电缆防火、隔热、抗冲击等领域具有广阔的应用前景。
Thermal response ceramic fire-resistant explosion-proof pad and preparation method thereof
The invention discloses a thermal response ceramic fire-resistant explosion-proof pad and a preparation method thereof.The preparation method specifically comprises the steps that firstly, inorganic nanofibers and a fluxing agent are subjected to ultrasonic dispersion to form uniform dispersion liquid, then a freezing binder is added into the dispersion liquid, and inorganic nanofiber aerogel is obtained through freeze drying; and finally, sequentially carrying out inorganic nanofiber aerogel pre-impregnation, organic silica gel impregnation, solvent replacement and drying and curing to obtain the thermal response ceramic fire-resistant explosion-proof pad. The explosion-proof pad can wrap an inorganic material three-dimensional network through physical and chemical crosslinking of the PDMS elastomer at a low temperature, certain elastic support is provided, and therefore the explosion-proof pad has high toughness and excellent impact resistance, PDMS on the surface can be cracked at a high temperature to generate a compact ceramic layer, internal materials can be isolated from external high-temperature flames and oxygen, and the explosion-proof pad has a good anti-explosion effect. Therefore, the flame-retardant and fire-resistant effects are achieved, and wide application prospects are achieved in the fields of battery protection, cable fire prevention, heat insulation, impact resistance and the like.
本发明公开了一种热响应陶瓷化耐火防爆垫及其制备方法，具体为首先将无机纳米纤维、助熔剂超声分散形成均匀的分散液，然后向分散液中加入冷冻粘结剂，经过冷冻干燥获得无机纳米纤维气凝胶；最后依次经过无机纳米纤维气凝胶预浸渍、浸渍有机硅胶、溶剂置换、干燥固化得到热响应陶瓷化耐火防爆垫；该防爆垫能够在低温下利用PDMS弹性体物理和化学交联包裹无机材料三维网络，提供了一定的弹性支撑，从而具有高韧性、优异的抗冲击性，在高温下表面的PDMS会发生裂解生成致密的陶瓷层，能够将内部材料与外部高温火焰和氧气隔绝，从而实现阻燃、耐火的效果，在电池防护、电缆防火、隔热、抗冲击等领域具有广阔的应用前景。
Thermal response ceramic fire-resistant explosion-proof pad and preparation method thereof
一种热响应陶瓷化耐火防爆垫及其制备方法
TANG YUFEI (author) / ZHONG HUAN (author) / TANG CHEN (author) / JIANG JUNYI (author) / YE JIAYI (author) / ZHONG PENGJIAO (author) / WANG HAO (author)
2024-11-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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