Gypsum-based thermal insulation mortar and preparation method thereof

The invention discloses gypsum-based thermal insulation mortar and a preparation method thereof, and relates to the technical field of thermal insulation mortar. The gypsum-based thermal insulation mortar is prepared from the following raw material components in parts by weight: 60 to 70 parts of beta-semi-hydrated phosphogypsum powder, 8 to 12 parts of expanded and vitrified small balls, 10 to 20 parts of fly ash, 0.5 to 1 part of methyl cellulose, 0.8 to 1.2 parts of super plasticizer, 1 to 2 parts of gypsum retarder, 1.5 to 2.5 parts of lubricant, 1.5 to 2.5 parts of silane water repellent, 0.5 to 1 part of anti-crack fiber, 4 to 6 parts of redispersible latex powder and 1.5 to 2.5 parts of vegetable gelatin powder. The gypsum-based thermal insulation mortar is light in weight, good in thermal insulation performance, low in heat conductivity coefficient and grade-A in fireproof grade. 本发明公开了一种石膏基保温隔热砂浆及其制备方法，涉及保温隔热砂浆技术领域，所述的石膏基保温隔热砂浆的原料组分包括如下重量份数的原料组分：β-半水磷石膏粉60～70份、膨胀玻化微珠8～12份、粉煤灰10～20份、甲基纤维素0.5～1份、超塑化剂0.