Deroll or roll sticking problem of silica gel mixing rubber:

Analysis of reasons for derolling or sticking of silica gel mixing rubber: derolling - glue content is too low; Gelatin hard; The roller distance during mixing is too large; The special original glue itself will deroll;

Sticking-roller temperature is too high and roller distance is too small; Low plasticity; Softening oil too much or one time to add too large; Mixing time is too long or out of order, such as after loading asphalt and rosin.

Silica gel mixing rubber roll or roll countermeasures: according to the status of the adjustment of formula or process.

Rubber mixing rubber shrinkage problem:

Reason: no vulcanization agent of the compound - plastic is too low; Mixing time is too short; Mixer mixing time is too long, resulting in agglomeration; Adding vulcanizing agent of the glue - the coke time of the glue is too short, the beginning of the coke; Storage time is too long, Mooney viscosity is too high or start to burn;

Countermeasures: Part can be processed by low temperature thin pass supplement.

Bunching problem of rubber mixing compound

Reason: raw rubber plasticizing is not sufficient; Raw rubber or some/some of the additives are affected with moisture, the water content is too high; The amount of glue is too large; If the roller distance is too large, the powdery compound falls directly onto the roller and is pressed into flake. High roller temperature (such as high temperature at the initial mixing stage, forming too many hard particles of hungry carbon black gel, etc.); Powdery complex containing coarse particles or clumps; Too much gel;

Countermeasures: The abnormal gummy material can improve the dispersibility by the supplementary processing method of low temperature roller thin pass.

Rubber mixing rubber can be plastic too large or small or uneven:

Reason: plasticizing rubber plasticizing degree is not appropriate; Mixing time is too long, too short; Mixing temperature is too high or too low; And the glue is not mixed evenly; Mixing is not uniform; More or less softening plasticizer; Carbon black is added too much, too little or wrong varieties.

Countermeasures: Plastic is too large, too small or uneven mixing compound, if the weight of the compound is normal, hardness and specific gravity are also in the range, can be mixed into the proper amount of normal compound for use (mixing amount is generally 10%~30% appropriate). Or the plasticity of too large and too small plastic compound in proportion to use. For plastic material too small, can be remedied by cold roll thin pass and other supplementary processing. If the other performance indicators of the compound, such as hardness, specific gravity or weight are not qualified, the material needs to be isolated and scrapped.