The oil content of fully refined paraffin refers to the amount of low melting point hydrocarbons contained in paraffin. High oil content will affect the color and storage stability of paraffin wax, but also reduce its hardness. Therefore, the oil containing wax extract from the reduced pressure fraction needs to be deoiled by sweating method or solvent method to reduce its oil content. However, most paraffin products need to contain a small amount of oil, which is beneficial to improve the luster and demoulding performance of products.
Paraffin products in the modeling or coating process, long-term hot melt state, and contact with the air, if the stability is not good, it is easy to oxidize metamorphism, color dark, and even odor. In addition, paraffin wax also turns yellow when used in light. Therefore, paraffin wax is required to have good thermal stability, oxidation stability and light stability.
Paraffin is a mixture of hydrocarbons, so it does not have the strict melting point of pure compounds. The so-called melting point of paraffin refers to the temperature at which the cooling curve of a melted paraffin sample appears for the first time under specified conditions. All kinds of wax products are required to have good temperature resistance to paraffin wax, that is, do not melt or soften deformation at a specific temperature. A series of different melting points of paraffin wax are required according to the different conditions of use, the regions and seasons of use and the environment of use.
The main factor affecting the melting point of paraffin is the weight of the selected raw material fraction. The melting point of paraffin removed from the heavier fraction is higher. In addition, the oil content of paraffin also has a great impact on the melting point, the more oil in paraffin, the lower the melting point.
The quality of fully refined paraffin is in accordance with GB 446-93 national standard. Mainly used in high frequency porcelain, carbon paper, iron pen wax paper, casting, decorative sound-absorbing board and other products. Also used in packaging, electronics, textile candle crayon, match manufacturing and other industries. In addition, manufacturing candles and various industrial, civil candle products raw materials and additives, modifiers, etc.
Production Method Fully refined paraffin refers to oily wax as raw material, through sweating or solvent deoiling, and then through clay or hydrorefining.
Matters needing attention
The storage place should be well ventilated, the temperature is suitable, and no sunlight is allowed.
Paraffin wax should be stored away from ignition
The heating temperature in use should not be too high to avoid oxidation.
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