1. epoxy resin: epoxy resin is the main component of crystal drops with good transparency and hardness. According to the requirements of products, choose the appropriate epoxy resin varieties, such as commonly used E-5 1 epoxy resin.
2. Curing agent: epoxy resin needs to be mixed with curing agent before curing reaction can occur. Commonly used hardeners are polyamide, polyamine and so on. According to the requirements of the product, choose the appropriate curing agent variety and proportion.
3. Filler: Filler can increase the strength and hardness of crystal drops. Commonly used fillers include glass fiber and silica gel powder. According to the requirements of the product, choose the appropriate filler variety and proportion.
4. Pigment: Pigment can add color to crystal drops and make them more attractive. According to the requirements of the product, choose the appropriate pigment variety and proportion.
5. Accessories: Accessories can improve fluidity and reduce the viscosity of crystal droplets. Commonly used excipients include diluent, leveling agent, etc. According to the requirements of the product, choose the appropriate variety and proportion of accessories.
The specific proportion of the formula needs to be adjusted according to the product requirements and experience. Generally speaking, the ratio of epoxy resin to curing agent is 100:20-30, the ratio of filler is 10-30%, and the ratio of pigment and auxiliary agent can be adjusted as required.
When preparing crystal drops, epoxy resin and curing agent are mixed evenly in proportion, then fillers, pigments and additives are added, and the mixture is continuously stirred and mixed until a uniform mixture is obtained. Finally, the mixture is poured into a mold, and the mixture is allowed to stand for a period of time to solidify, so that the crystal glue drop product can be obtained.
It should be noted that when preparing crystal drops, we should pay attention to safe operation, avoid contact with skin and eyes, and maintain a well-ventilated environment. At the same time, appropriate adjustments and improvements can be made according to product requirements and experience to obtain better product performance and quality.