Novel use of coal as rubber reinforcement and preparation method of rubber reinforcer
A rubber reinforcing agent and coal technology, applied in the field of rubber reinforcement, can solve the problems of complex process, tight raw materials and high prices, and achieve the effects of improving economic benefits, easy mining and large reserves
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Embodiment 1
[0042] 1) Dry the coal powder in an oven at 100°C for 6 hours, pass through a 200-mesh sieve, and put it in an oven at 100°C for use.
[0043] 2) Add 230mL of concentrated sulfuric acid (analytical grade) to a 2000ml beaker and place it in a constant temperature water bath to cool down the concentrated sulfuric acid to 0°C.
[0044] 3) While stirring, add 10g of the mixture of coal powder and 5g of sodium nitrate prepared in step 1) into the beaker, continue to stir for 30 minutes to ensure uniform mixing, then add 40g of potassium permanganate, it is required to add a small amount to prevent the reaction temperature Rise to 20°C, complete the addition within 1.5 hours, and continue stirring for 30 minutes after the addition.
[0045] 4) Put the mixture obtained in step 3) into a constant temperature water bath at 40°C, and continue to stir for 30 minutes. During the stirring process, the mixture gradually thickened and the bubbles disappeared. After the stirring, the mixture ...
Embodiment 2
[0049] 1) Dry the coal powder in an oven at 100°C for 6 hours, pass through a 200-mesh sieve, and put it in an oven at 100°C for use.
[0050] 2) Add 100mL of concentrated sulfuric acid (analytical grade) to a 2000ml beaker and place it in a constant temperature water bath to cool down the concentrated sulfuric acid to 0°C.
[0051] 3) While stirring, add 5g of the mixture of coal powder prepared in step 1) and 2g of sodium nitrate into the beaker, continue to stir for 30 minutes to ensure uniform mixing, then add 30g of potassium permanganate, and add in small quantities to prevent reaction temperature Rise to 20°C, complete the addition within 1.5 hours, and continue stirring for 30 minutes after the addition.
[0052] 4) Put the mixture obtained in step 3) into a constant temperature water bath at 40°C, and continue to stir for 30 minutes. During the stirring process, the mixture gradually thickened and the bubbles disappeared. After the stirring, the mixture became viscous...
Embodiment 3
[0056] 1) Dry the coal powder in an oven at 100°C for 6 hours, pass through a 200-mesh sieve, and put it in an oven at 100°C for use.
[0057] 2) Add 300 mL of concentrated sulfuric acid (analytical pure) to a 2000 mL beaker, and place it in a constant temperature water bath to cool down the concentrated sulfuric acid to 0°C.
[0058] 3) While stirring, add 20g of the mixture of coal powder and 12g of sodium nitrate prepared in step 1) into the beaker, continue to stir for 30 minutes to ensure uniform mixing, then add 50% of potassium permanganate, it is required to add a small amount to prevent the reaction temperature Rise to 20°C, complete the addition within 1.5 hours, and continue stirring for 30 minutes after the addition.
[0059] 4) Put the mixture obtained in step 3) into a constant temperature water bath at 40°C, and continue to stir for 30 minutes. During the stirring process, the mixture gradually thickened and the bubbles disappeared. After the stirring, the mixtu...
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