When the hardness of the silicone rubber sealing strip is lower than 10 degrees, the tear strength of the silicone sealing strip is low, the elongation is large, and the silicone strip products are easily deformed; when the hardness is higher than 50 degrees, the tear strength is deteriorated, and the silicone products are brittle and easy. Break or break. Generally, when the hardness of the silicone rubber sealing strip is 20-40, the tear strength and elongation are in a state. In addition, the lower the viscosity (the better the fluidity), the more favorable it is to evacuate the air bubbles, but at the same time the tear strength will be worse, and the number of re-moulding will be reduced.
0 degree hardness mold silicone strip is a super soft silicone strip, which is a colorless transparent liquid for addition molding. It has excellent electrical properties and chemical stability, water resistance, ozone resistance, weather resistance, non-corrosion, and physiological inertness. Non-toxic and tasteless, low linear shrinkage, easy to operate and so on. Mostly used for chest pads, shoulder pads, etc. The silicone products made are washable, non-bubbly, and will not crack.
5 degree-10 degree hardness silica gel strip is soft silicone, low hardness, good fluidity, easy pouring, non-corrosive, very suitable for delicate and soft soap crafts. The soap molds produced are not oily, deformed, and the surface is smooth and bright. .
10 degree-25 degree hardness silicone sealing strips are recommended for products with a size of 10-20 cm. It is suitable for duplicating product models with very fine patterns and injecting mold operations. This mold opening method is relatively easy to demold and will not damage the silicone. Product inside the mold. Can be used for making candles, replicas of various handicraft models, etc. It can also be used for embossing (plant glue) of clothing signs. Silicone candle can be used in two types: condensation and addition. The crafted silicone candle can be ignited quickly and continue to burn normally until the candle is burned out. No oil will be emitted during the burning process.
25 degree-30 degree hardness silicone rubber strip is recommended for products with a size of 30-50 cm. It is suitable to choose the brush mold opening method. Condensed silicone can be used to make silicone molds for gypsum, cement, concrete, rapid prototyping, GRC European-style components, large cement components, imitation marble, artificial culture stones, etc .; transparent silicone can be used for injection molding, diamond-like, jewelry model Wait. RXD17 or RXD33 can be used to make shoe molds.
40 degree-50 degree hardness silicone sealing strip is recommended to use brush mold (slicing die, three-dimensional mold, flat mold) operation mode, suitable for products with very fine patterns; 50 degrees -60 degrees are high hardness silicone, high tear resistance, High temperature resistance, washable stone grinding, strong adhesion, good firmness, mostly for the fixing of precision parts or fixtures.
If the customer is to make small products with very fine patterns, it is necessary to use a slightly softer silicone; if you are to make a larger product, you need to use a silicone with a hardness of 32-35A °.
，转载请注明出处 Copyright http://webbeech.com , please indicate the source when reproduced