Preparation For Compound Environmental Regeneration Activator And Study On Its Influence On The Performance Of Reclaimed Rubber

Nowadays, under the circumstance where natural rubber is reducing and energy issparse relatively, the study on waste rubber reclamation is equipped with importantpractice significance. Producing reclaimed rubber is an effective way to recycle wasterubber and the choice of regeneration activator is the core of producing reclaimedrubber. The paper filtrates auxiliary activator with better effect though the study on theregeneration effect of various regeneration activator to full-tyre rubber powder.High-efficiency environmental compound activation system is generated via variousactivators.Study the effect of stearic acid, zinc oxide and zinc stearic acide on the structureand properties of reclaimed rubber, which is reclaimed by activator420. The results ofexperiment have manifested that the regeneration effect of stearic acid is much better.With the increased use of stearic acid, the physical performance of reclaimed rubberincreases and mooney viscosity reduces obviously. What’s more, after10days, theadded value of mooney shows the trend of declining, and when the dosage is from0.9to1.2phr, the comprehensive performance is better. The effect of zinc oxide and zinstearate is not very good.Study the effect of fatty acids and aromatic acids on the structure and propertiesof reclaimed rubber, which is reclaimed by peptizer DBD.It shows that fatty acid isequipped with auxiliary regeneration effect. Taken a general view, the effect of tartaric acid is better with higher content of reclaimed rubber, lower of crosslinking densityand mooney viscosity and higher tensile strength and breaking elongation relatively.The dosage of tartaric acid, stearic acid, and mixing fusion of stearic acid andDBD is studied respectively and the results have indicated that when the dosage oftartaric acid is0.6phrm, the comprehensive performance of reclaimed rubber is muchbetter and when dosage of stearic acid is0.6phr, regeneration effect is also much better,and when the dosage of mixing fusion of stearic acid and DBD is0.9phr, thecomprehensive performance of reclaimed rubber is much better. The tensile section ofvulcanized rubber is studied through SEM and we have found that tensile section ofreclaimed rubber with mixing fusion of stearic acid and DBD is smoother than that ofblank sample and its regeneration is rather even.The effect of banburying time towards regeneration effect is studied when the bestdosage of tartaric acid, stearic acid, and mixing fusion of stearic acid and DBD isapplied. The results show that with the increase of banburing time, the regenerationdegree of reclaimed rubber increases obviously, mooney viscosity reduces but thephysical and mechanical performance declines to varying degrees. Taken a generalview, when banburying time is15minutes, the auxiliary regeneration effect of threeactivators is good. When the banburying time is the same, the comprehensiveperformance of reclaimed rubber with stearic acid is better.Various aromatic acids are done with screening experiments and the experimentresults have shown that aromatic acids are equipped with some certain auxiliaryregeneration effect but the physical and mechanical performance is poor. As a whole,the regeneration effect of aromatic acids is not as good as that of fatty acid.Various amine compounds are done with screening experiments and theexperiment results have manifested that part of amine compounds is equipped withobvious amine compounds. As a whole, sol content of reclaimed rubber addedoctadecylamine and diphenylguanidine is rather high, and its crosslinking density andmooney viscosity declines but with good physical and mechanical performance.The dosage of octadecylamine and diphenvlguanidine is further studied and theexperiments results have manifested that with the increase of their dosage,regeneration degree of reclaimed rubber increases, handing characteristics becomebetter, and physical and mechanical performance increases to varying degree. Whenthe dosage of octadecylamine and diphenvlguanidine is between0.6and0.9phr, thecomprehensive performance of reclaimed rubber is much better. Banburying time is studied when the dosage of octadecylamine anddiphenvlguanidine is properest. The results demonstrate that with the increase ofbanburying time, regeneration degree of reclaimed rubber increases, mooney viscosityreduces obviously and its physical and mechanical performance declines greatly. Takena general view, the auxiliary regeneration effect is much better than that ofdiphenylguanidine. When the banburying time is15minutes, the comprehensiveperformance of reclaimed rubber with octadecylamine is much better.Various antioxidants are done with screening experiments. The results haveshown that sol content of reclaimed rubber is increased to varying degree andcrosslinking density reduces because of the accession of antioxidants.