Fireproof aqueous coating used for filter core, and preparation and use methods of same

The invention relates to the technical field of coatings and particular discloses a fireproof aqueous coating used for a filter core, and preparation and use methods of same. The coating includes, byweight, 30-60 parts of a polytetrafluoroethylene dispersed emulsion, 1-8 parts of a flame-retarding agent, 0.5-2 parts of diatomite, 0.5-2 parts of an antistatic agent, 0.5-2 parts of wax emulsion, 0.1-0.2 parts of a pH regulator, 2-5 parts of a film forming additive, 0.3-0.5 parts of a dispersant, 0.3-0.5 parts of a base material wetting agent, 5-10 parts of deionized water, and 0.5-1 part of a thickener. The coating is low in VOC content, has excellent filter effect, has proper hardness and good softness, and is excellent in flame-retarding property. 本发明涉及涂料技术领域，具体公开种滤芯用耐火水性涂料及其制备和使用方法。按重量份数计，包括如下组分：聚四氟乙烯分散乳液：30-60份，阻燃剂：1-8份，硅藻土：0.5-2份，防静电剂：0.5-2份，蜡乳液：0.5-2份，pH调节剂：0.1-0.2份，成膜助剂：2-5份，分散剂：0.3-0.5份，基材润湿剂：0.3-0.5份，去离子水：5-10份，增稠剂：0.5-1份。本发明制备的滤芯用耐火水性涂料VOC含量低，具有优异的过滤效果，硬度合适柔软度好，阻燃性能优异。