Water-proof sealing grease for optical instrument and preparation method thereof

Abstract

The invention relates to the field of optical auxiliary materials, in particular to a water-proof sealing grease for an optical instrument and a preparation method thereof. The grease, actually a mixture, is characterized by comprising the raw materials in part by weight ratio: two kinds of silicone oils with kinematic viscosities of 0.65-3000 cst and 3000-500000 cst at 25 DEG C, a lipid solubility additive, a plasticizer, and an inorganic gelling agent. The method comprises the following steps: adding the two kinds of silicone oils with kinematic viscosities of 0.65-3000 cst and 3000-500000 cst at 25 DEG C, the lipid solubility additive and the plasticizer in a mixing tank for mixing for 0.5-3 h at the speed of 30-1000 r / min, adding the inorganic gelling agent after the mixture is uniformly mixed for further uniformly mixing, pouring into a plate for spreading, placing in a vacuum drying box for heating 3-8 h, taking out for cooling to an ambient temperature, grinding 3-5 times, and packing if passing the detection. The grease is used for the sealing and lubricating of the optical instruments, has good water resistance, does not dissolve in the water environment, dose not disperse, is strong in air tightness, small in volatility and good in lubricity, has the advantages of no corrosion to metal and glass and has high and low temperature resistance.

Description

technical field

[0001] The invention relates to the field of optical auxiliary materials, in particular to a waterproof sealing grease for optical instruments and a preparation method thereof. Background technique

[0002] Waterproof sealing grease for optical instruments is used in the lubrication and sealing of moving parts and various sliding parts of optical instruments in a water environment, and has the performance of waterproof, lubricating and sealing. The sealing and lubrication requirements for optical instruments are as follows: sealing materials for optical instruments are used for joints and screw connections of parts in optical instruments, so as to prevent dust, moisture, water, keep the optical system clean, prevent mildew, and prevent fog. , Anti-corrosion. The requirements for sealing materials are: 1. Strong ability to adhere to metal and glass, but not to human body; 2. Strong air tightness; 3. Low volatility, no corrosion to metal and glass; 4. Anti-agi...