A kind of water storage anti-seepage rubber plate and preparation method thereof
A technology of rubber sheet and water storage layer, applied in the field of composite materials, can solve the problems of fast water absorption and water loss, and achieve the effects of improving aging resistance, expanding application scope, and improving tear strength and tensile resistance.
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[0041] In the present invention, the preparation method of described dipping liquid preferably comprises the following steps:
[0042] Resorcinol, formaldehyde and NaOH are mixed to carry out polymerization reaction, obtain resorcinol-formaldehyde resin liquid;
[0043] Natural rubber latex and resorcinol-formaldehyde resin liquid are mixed to obtain mixed emulsion;
[0044] The pH value of the mixed emulsion is adjusted to 10-11 by using ammonia water to obtain a dipping solution.
[0045] The invention mixes resorcinol, formaldehyde and NaOH to carry out polymerization reaction to obtain resorcinol-formaldehyde resin liquid. In the present invention, the mass ratio of the resorcinol, formaldehyde and NaOH is preferably 1~2:6~8:1~2, more preferably 1.5:7:1.5; the temperature of the polymerization reaction is preferably room temperature , without additional heating or cooling, more preferably 26°C; the polymerization reaction time is preferably 1-2 days, more preferably 1 da...
Embodiment 1
[0086]Firstly, prepare impregnated cotton short fibers: take 5 parts of resorcinol and 35 parts of formaldehyde, add 5 parts of NaOH at 26° C., and carry out stirring and condensation reaction for 1 day to obtain a resorcinol-formaldehyde resin liquid; Get 90 parts of natural rubber latex, mix 30 parts of resorcinol-formaldehyde resin, use ammonia water (mass concentration is 28%) to adjust the pH value to be 11.0 to obtain the dipping solution, place the dipping solution in the dipping tank of the dipping equipment In the process, the long cotton fiber is soaked in the dipping solution, and the temperature of drying after being pulled out is 70°C, and then naturally cooled to 22°C, and the length of cutting is 10 cm, so as to obtain the short cotton fiber that has been soaked in glue for subsequent use; The base rubber is ready for use after cutting and plasticizing at 60°C;
[0087] The butyl rubber processed by rubber cutting and mastication and the short cotton fiber and o...
Embodiment 2
[0095] Prepare the water-storage anti-seepage rubber sheet according to the method of Example 1, the specific difference is that the consumption of the formula raw materials of the water-storage layer and the anti-seepage layer changes, and the water-storage layer includes the following components by weight:
[0096] 90 parts of butyl rubber, 75 parts of short cotton fiber, 15 parts of polymer water-absorbent resin, 4 parts of zinc oxide, 1 part of stearic acid, 1 part of accelerator M, 0.8 parts of anti-aging agent CTU, 1.5 parts of sulfur;
[0097] The anti-seepage layer comprises the following components by weight:
[0098] 90 parts of butyl rubber, 18 parts of carbon black, 35 parts of light calcium, 4 parts of zinc oxide, 1 part of stearic acid, 1 part of accelerator M, 0.8 parts of antioxidant CTU, and 1.5 parts of sulfur.
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