Non-curable rubber asphalt waterproof paint modifier and preparation method thereof
A kind of asphalt waterproof coating and non-curing rubber technology, applied in the coating field, can solve the problems of insufficient rubber, poor coating stability, low temperature flexibility, etc., to improve comprehensive physical properties, good stability, improve creep and initial sticky effect
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[0045] According to another aspect of the present invention, there is also provided a method for preparing the above-mentioned non-curing rubber asphalt waterproof coating modifier, which includes the following steps: mixing the solubilizing oil and the linearized active rubber to obtain a premix; and The premix is mixed with the rubber crosslinking auxiliary agent to obtain the modifier.
[0046] In the modifier obtained by the preparation method, the linearized active rubber is obtained by desulfurization treatment of waste rubber powder, and the weight percentage of linearized molecules in the linearized active rubber is more than or equal to 75%. The linearized reactive rubber basically belongs to linearized macromolecules or has a high content of linearized macromolecules. Utilizing the modifier can give full play to the low-temperature flexibility and elasticity of the rubber itself. At the same time, the cross-linking structure in the linearized reactive rubber has b...
Embodiment 1 to 17
[0068] All utilize following method to carry out waste rubber desulfurization regeneration treatment in these embodiments:
[0069] Step 1: Put 80-mesh waste tire rubber powder and photocatalyst into the high-speed mixing unit, stir at a stirring speed of 1000rpm for 20 minutes until the temperature reaches 70°C, stop stirring, put the material into the cooling unit to cool and discharge, and obtain a mixture ;
[0070] Step 2: Put the mixture into a supercritical carbon dioxide reactor, use a high-pressure pump to inject carbon dioxide gas into the reactor to adjust the pressure in the reactor, and raise the temperature at the same time to convert the carbon dioxide gas into a supercritical state; start stirring to make the mixture in the supercritical state Swell in critical carbon dioxide to obtain a swelling mixture;
[0071] Step 3: Maintain the above-mentioned supercritical carbon dioxide environment, start the built-in ultraviolet light source to irradiate the swelling...
Embodiment 18
[0078] The technological process in this embodiment is the same as embodiment 9, and difference is:
[0079] Step 1: Put 120-mesh waste tire rubber powder and photocatalyst into the high-speed mixing unit, stir at a stirring speed of 700 rpm for 30 minutes until the temperature reaches 60°C, stop stirring, put the material into the cooling unit to cool and discharge, and obtain mixture.
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