Light-color oil-resistant sealing ring rubber material and preparation method thereof
A technology of oil-resistant sealing rings and rubber materials, which is applied in the field of rubber products, can solve the problems of environmental pollution, easy floating, and high energy consumption, and achieve the effects of low cost, low compression set, and extended service life
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Embodiment 1—3
[0024] The premix of the low molecular weight PPC that embodiment 1-3 uses is all prepared by this method, and the preparation steps of the premix of low molecular weight PPC are as follows:
[0025] The low molecular weight PPC for premixing in the present invention is provided by Jiangsu Zhongke Jinlong Chemical Co., Ltd. Specifically, it is the product of the reaction between carbon dioxide and propylene oxide produced in the company's cassava fermentation process to produce alcohol. It is a low-molecular-weight PPC with a number-average molecular weight between 2000 and 4500, and its appearance is a white transparent viscous liquid.
[0026] Preparation of low-molecular-weight PPC premix: Step 1) Heat low-molecular-weight PPC to 65±1°C, then add maleic anhydride (MA) and mix and stir for 1 hour to make maleic anhydride (MA) in PPC Completely dissolved in the medium, the mass ratio is PPC:maleic anhydride=10:2, to prepare modified PPC;
[0027] Step 2) Add the modified PPC...
Embodiment 1
[0029] First adjust the roll distance of the double-roll mill to 0.1mm, add 80g of nitrile rubber thin pass 4 times, adjust the roll distance to 0.5mm, add 20g acrylate rubber thin pass until the mixing is uniform; adjust the roll distance to 2.3mm, when When the rubber material is wrapped with a small amount of rubber accumulation, add 5g zinc oxide, 1.7g stearic acid, 1g anti-aging agent BLE, 1g anti-aging agent 4010NA, and mix well; then add 10g basic white carbon black, 25g precipitation method White carbon black, 1g silane coupling agent KH-560, 0.8g PEG-4000, 6.7g plasticizer DOS; 14g low molecular weight PPC premix; adjust the roller distance to 0.5mm when the material is completely eaten, and pack 4 Then adjust the roller distance to 2.5mm, add 1g of vulcanizing agent TCY, 3g of acid absorbing agent, 5g of calcium carbonate, 2g of accelerator DTDM, 1.5g of accelerator CZ, 1.5g of accelerator TMTD, and adjust the roller until the material is completely fed. Gap to 0.3mm...
Embodiment 2
[0031] First adjust the roller distance of the double-roll mill to 0.1mm, add 80g of nitrile rubber thin pass 4 times, add 20g of acrylic ester rubber thin pass until the mixing is uniform; When accumulating glue, add 4g zinc oxide, 1.5g stearic acid, 1.25g anti-aging agent BLE, 1.25g anti-aging agent 4010NA, and mix well; then add 10g basic white carbon black, 13g precipitated white carbon black, 1g Silane coupling agent KH-560, 0.8g PEG-4000, 3.3g plasticizer DOS; 28g low molecular weight PPC premix; when the material is completely fed, adjust the roller distance to 0.5mm, pack 5 times with thin pass; then adjust the roller When the distance reaches 2.4mm, add 1.1g vulcanizing agent TCY, 3g acid absorbing agent, 5g calcium carbonate, 2g accelerator DTDM, 1.5g accelerator CZ, 1.5g accelerator TMTD, and adjust the roller distance to 0.3mm when the material is completely fed. , Thin pass packs 4 times; the mixing temperature is controlled at about 50 ℃, the roller distance is a...
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