A: Plexiglass is polymethyl methacrylate. Just heat it! Or dissolved in acetone, and the solution is poured into a mold, and the acetone will evaporate.

2. What conditions are needed to preserve the mature monomer of plexiglass to the greatest extent?

A: The mature monomer is polymerized methyl methacrylate, which can maintain its original properties only at a low temperature of 5 degrees Celsius, and can be polymerized and hardened at a high temperature. Raw and cooked monomers should be placed in large glass-stopper jars and kept in the refrigerator; In order to facilitate the use and avoid improper disposal of waste materials, some monomers can be poured into two small 50 ml wide-mouth bottles for use.

3. How many degrees does it take for the mature monomer of plexiglass to polymerize and harden, and how long does this process take?

A: It will polymerize and harden at a temperature lower than 5 degrees Celsius, and it is easier to polymerize at a higher temperature (it can be heated to 30-40 degrees Celsius during the embedding process of insect specimens). As for how long it takes, it is best to wait patiently for the mature monomer to polymerize under natural conditions, so that although it takes a long time, it is not easy to form bubbles or deformation. The polymerization process takes 2-3 days and can be probed with a fine needle. If the mature monomer has been polymerized into semi-solid but not completely hardened, the injection thickness can be about 0.5cm.

4. Whether the raw materials and mature monomers of plexiglass can be converted by some relatively simple methods.

A: If you want to speed up the plastic packaging, adding a little plasticizer to the green monomer can shorten the plastic packaging time. The plasticizer used is phthalate esters, such as dimethyl phthalate and dibutyl phthalate.

If you want to change from a cooked monomer to a raw monomer, add acetone, isoamyl acetate or benzene to dissolve it, and then evaporate the solvent when using it.

Another problem is that rosin can improve its melting point, hardness and transparency by some means.

Answer: You can choose "resin rosin" instead of "disproportionated rosin" when purchasing. Rosin is an amorphous transparent solid, but it tends to crystallize. Crystallization will reduce the transparency and solubility and affect the use. 0.2% 4 15X antioxidant decolorizer is a viscous liquid at room temperature, which can effectively improve the crystallization resistance of rosin. At the same time, if you want to increase the melting point, you should choose "crystalline rosin".