A kind of rapid determination method of ash content of sulfenamide vulcanization accelerator

Abstract

The present invention involves a rapid measurement method of a sulfide vulcanized vulcanization promotion agent ash. It includes the conductivity of the ionic water with the conductivity instrument to obtain the conductivity C1 of the ionic water at 25 ° C, and the sulfide vulcanization promotion is promoted by the sulfuramide vulcanization.Sample samples, add removing ion water and stir well, then stir up for 2min ~ 10min, make the sample solution, and then use the conductivity to determine the conductivity of the sample solution to obtain the conductivity C2 of the sample solution at 25 ° C; according to the formula W = K2(C2-K1 × C1) ×%Calculate the gray content in the sulfuramide vulcanization promotion agent; the fast measurement method of the ash division of the present invention is simple and easy to operate, the operation time is short, the detection time is short, and the method of gray division of the method described by the present invention is determinedIt takes about 10min, and the measurement of batch samples requires about 5min ~ 8 minutes. Compared with the method specified in the national standard GB / T11409, the testing time is greatly shortened. As long as the conductivity is measured, the gray content can be quickly calculated.The process is strict, the error is small, and the test results are accurate and intuitive.

Description

technical field [0001] The invention relates to a quick determination method for ash content of a sulfenamide vulcanization accelerator, belonging to the technical field of rubber vulcanization accelerator analysis. Background technique [0002] Ash content is one of the important indicators of the quality of rubber additives. The national standards, industry standards or enterprise standards of most rubber additives use ash content as one of the technical requirements to be controlled. Ash refers to the inorganic matter obtained by calcining the remaining residue after the sample is burned under specified conditions, expressed in mass percent. The ash content of rubber additives is mostly soluble ash, which can be controlled by washing with water. [0003] At present, the determination of the ash content of sulfenamide vulcanization accelerators is carried out according to the method stipulated in GB / T11409, also known as the high-temperature ashing method. 2g~5g (accurat...

AI Technical Summary

Problems solved by technology

[0014] 2. High energy consumption: In the method specified in GB / T11409, the power of the electric furnace used for carbonization is at least 2kw, and the power of the high-temperature furnace used for burning is at least 4kw. From the constant weight of the crucible to the completion of the sample test, the electric furnace should work for at least 2 hours, and the high-temperature furnace should work for at least 5 hours.

[0015] 3. High toxicity: the carbonization process removes volatile matter, and the high-temperature furnace burns to make the organic matter burn and volatilize, all of which produce a large amount of toxic and harmful smoke, which is very harmful to the environment and operators.