The transparent artificial marble consists of the following raw materials in mass ratio: 500-700 mesh 5- 100 mesh white diamond crystal or rosin jade powder sand, 30- 180 ultrafine calcium carbonate powder, 58- 150 transparent unsaturated polyester resin and 0.9- 1.8.
Ultrafine calcium carbonate powder is calcium carbonate powder with 1250 mesh or more, transparent unsaturated polyester resin is crystalline resin, initiator is ketone initiator, accelerator is cobalt accelerator, and pigment is titanium iron yellow.
The manufacturing steps of transparent artificial marble are as follows:
1, batching: 5- 100 mesh white diamond crystal or rosin jade powder sand and superfine calcium carbonate powder are stirred to obtain a mixture a;
2, adding pigment into the mixture A, and stirring for 5-2o minutes to obtain a mixture B;
3. Adding transparent unsaturated polyester resin, initiator and accelerator into the mixture b, mixing and stirring, then vacuumizing with the vacuum degree of 60-70 cmhg, and continuing to stir until the materials are agglomerated to obtain the mixture c;
4, adding transparent nano-silica material into the mixture c, stirring, vacuumizing and injecting into a mold;
5, putting the mold injected with the material into a vacuum chamber, and performing vibration compression molding;
6, demoulding after curing, curing time is not less than hours, and curing for 6 days after demoulding;
7. According to the specification requirements, the base material after demoulding is cut, polished and trimmed to obtain transparent artificial marble.
The transparent artificial marble has the following advantages:
1, the equipment is simple, the materials are easily available, and the existing equipment can be used for production. Transparent resin and transparent nano-materials are used to solve the problem that traditional artificial marble cannot transmit light, and the primary color pigments can be adjusted at will, which is convenient to set. Light-transmitting artificial marble with different textures and colors is especially suitable for small and medium-sized stone factories, which can not only utilize waste stones, but also produce high-quality and low-cost light-transmitting artificial marble.
2. The marble has high simulation degree, good toughness, particle structure and low resin content, and can be processed into a 0.8 mm thin plate. A series of measures taken in production are conducive to improving the quality of finished products; For example, when stone ingredients are mixed with dry materials, their water content is limited. They are mixed, distributed and vibrated under vacuum to remove water and low molecular compounds. Part of soft resin can be used as liquid filler to reduce the amount of unsaturated resin; It can also reduce the severity of polymer polymerization reaction, appropriately reduce the rigidity of slate, increase toughness and prevent cracking.
3. The cost is reduced and the benefit is remarkable.
4. It has the advantages of light transmission, heat resistance, difficult deformation and aging, and the heat resistance can reach more than 70 degrees.