Preparation method of homogeneous polytetrafluoroethylene self-lubricating three-layer composite material

• Main Authors: XU YONGKUN, SUN ZHIHUA, FAN XUEFENG
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a preparation method of a homogeneous polytetrafluoroethylene self-lubricating three-layer composite material. The preparation method comprises the following steps: S1, mixing functional filler particles, nanoparticles and water, and conducting stirring to form turbid liquid; S2, grinding the turbid liquid by using a colloid grinder to form an emulsion; S3, stirring the emulsion, a polytetrafluoroethylene concentrated dispersion liquid and a reinforcing filler to form a first mixed solution; S4, stirring the first mixed solution and polytetrafluoroethylene suspension powder to form a second mixed solution; S5, heating and stirring the second mixed solution; and S6, drying the second mixed solution until the second mixed solution is dried to be in a slurry state. Therefore, the dispersion is uniform, agglomeration is avoided, and the mechanical property, self-lubricating property and friction resistance are improved. 一种均质聚四氟乙烯自润滑三层复合材料的制备方法，包括以下步骤：步骤S1：将功能填料颗粒、纳米颗粒与水混合搅拌形成悬浊液；步骤S2：将悬浊液