A, transparent mold silicone is introduced

Transparent mold silicone is colorless or skin color oily liquid, become a soft elastic material, after vulcanization temperature range under to 50 ° C to 250 ° C can use for a long time and keep its soft elastic performance, electricity performance and chemical stability, water resistance, ozone resistance, weathering resistance, no corrosion, has a physiological inertia, avirulent insipidity, line shrinkage rate is low. Transparent silicone can be divided into forming transparent silicone and condensation type transparent silicone, can fully meet the requirements of food grade.

Condensation type transparent silicone

Condensation type transparent silicone

Add molding transparent silicone

Add molding transparent silicone

Transparent mold silicone

Transparent mold silicone

Second, the transparent mold silicone characteristics

(1) with excellent transparency, resistance to tear strength.

(2) good resilience, yellow degeneration resistance, thermal stability, water resistance.

(3) good permeability, thermal aging and weather resistance.

(4) of moderate viscosity, easy to operation, line shrinkage rate 0.1%, or less size precision of copy products.

5. Products high transparency, can see the mold filling and if there is a bubble defects such as casting materials.

Three, use the transparent mold silicone

Transparent mold silicone is mainly used in precision mold manufacturing, such as polyurethane, epoxy resin molding precision mold production, scale requires stable chemical building materials and carbon fiber composite materials and machine parts of surveying and mapping, can also be used for pooly resin, epoxy resin and PU foam resin decorations and crafts of copying, the art of making and candles and gypsum grinding tool, can be used in the manufacture of furniture industry and electronics industry production of the mold of, can also be used for production of high hardness, high service life of rubber pad printing head.

Transparent silicone mold products

Transparent silicone mold products

Transparent silicone pacifier

Transparent silicone pacifier

Transparent silicone mold arts and crafts

Transparent silicone mold arts and crafts

Four, transparent mold silicone technology parameters and price

Type of hardness (A0) viscosity (Mpa) s) tearing (KN/m) stretch (Mpa), elongation percentage (%) reference price

1310 10 + 2 65000 + 5000 10 or 2.8 500 now click consulting 1310 or higher prices

1320 to 20 + 70000 + 5000 or greater 12 3.1 450 now click consulting 1320 or higher prices

1330 to 30 + 2 1330 + 80000 15 or 4.1 350 now click consulting 1330 or higher prices

40 + 80000 + 5000 2 1340 14 or 3.6 300 now click consulting 1340 or higher prices

Five, transparent mold silicone using method

1, the hybrid: A component (glue) and B component (hardener) mixed according to weight ratio of 10:1, mixing can be manually or using equipment.

2, deaeration: blend of rubber should be deaeration before filling mould. When a small amount of use can be carried out within the vacuum dryer, under vacuum, the volume of rubber foam can increase 4 ~ 5 times, therefore, deaeration container volume should be 4 ~ 5 times larger than the volume of rubber, colloid product back to normal in a few minutes, when the surface without air bubbles escape (approximately 10 minutes) deaeration process is completed.

3, surface treatment, rubber mold surface or need to contact the potting materials available on the surface of liquid paraffin as a release agent, etc.

4, sulfide and demoulding: after mixing deaeration rubber in 120 + 5 ℃ drying curing 30 minutes, 60 ~ 70 ℃ drying curing 2 ~ 3 hours, at room temperature curing time is 24 hours, curing temperature and time can be according to processing conditions.

Six, transparent mold silicone FAQ

1, transparent mold made of silicone silicone products why yellow?

Aspects: (1) sulfiding agent vulcanizer divided into normal and yellow resistance performance. The scope of its application has the following two aspects:

A. normal don't fight yellow vulcanizing agent, used in some can be used for dark or non exposed for color request is not high silica gel products;

B. the yellow resistance vulcanizing agent applied to need to appear bright, color is shallow, and a need to color.

(2) operational aspects: transparent silicone products when molding, after molding, transparent silicone products in color yellow and the main problems are:

A. the mold temperature is too high; B. The curing time is too long; C. twice after add sulfur.

(3) the silicone aspects: sometimes we added resistance to yellow in the rubber vulcanizing agent, but after the molding is still looks yellow transparent silicone products, it might be the raw material of Huang Nengli is too bad, bad for raw material yellow resistance of material suggestion is directly refueling.

Conclusion: although the silicone products have excellent weather resistance and aging resistance, but sometimes yellow or appear of silica gel products. To avoid this situation, to choose the vulcanizing agent, according to the process to strictly control the mold temperature and the curing time of the product, must pay attention to the raw material of yellow resistance materials.

2, what is the difference between transparent mold silicone with white mold silicone?

Transparent mold filling gas phase of white carbon black, silica gel mainly white mold silicone is mainly filled with calcium carbonate, silica powder, titanium dioxide, zinc oxide, part of precipitated silica, the main difference is the filling ingredients, in addition to part itself with pigments become white translucent mould rubber. Intensity, white carbon black filled rubber general strength is larger, mainly white carbon black particle size is small, has a good reinforcing effect, ordinary packing filling adhesive mainly be used to reduce costs, collocation of good words, of course, can do the same intensity, but it is made of mould plastic than major point.