Preparation method of wear-resistant aging-resistant rubber compound filled with coupling modified wood fiber
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A technology of wood fiber and mixed rubber, which is applied in the field of preparation of wear-resistant and aging-resistant mixed rubber, to achieve the effect of improving modulus, low rolling resistance and improving cutting resistance
Inactive Publication Date: 2018-12-21
界首市鑫一龙机械设备购销有限公司
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Problems solved by technology
However, the research on rubber modification by modified carbon black is still in a blank stage. Therefore, it is necessary to study the effect and mechanism of modified carbon black on rubber properties.
Method used
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Embodiment 1
[0024] A method for preparing a wear-resistant and aging-resistant mixed rubber filled with coupling modified wood fibers, characterized in that it comprises the following steps:
[0025] (1) Preparation of hydroxymethylated modified carbon black:
[0026] Mix oxidized carbon black, 80 parts of formaldehyde and 10 parts of sodium hydroxide aqueous solution, stir and reflux at 50-53°C for 4 hours in a nitrogen atmosphere, filter, wash with water until neutral, and dry at 50-55°C to constant weight , to obtain hydroxymethylated modified carbon black;
[0027] (2) Coupling modification method of wood fiber:
[0028] Add 0.3 parts of silane coupling agent to the ethanol solution, stir for 5 minutes to mix evenly, add 6 parts of wood fiber, modify it in a water bath at 58-62°C for 1 hour, take it out and dry it in the air, and dry it in an oven at 115-120°C for 1 hour. Obtain the wood fiber of coupling modification;
[0029] (3) Preparation of rubber compound:
[0030] Set the ...
Embodiment 2
[0038] A method for preparing a wear-resistant and aging-resistant mixed rubber filled with coupling modified wood fibers, characterized in that it comprises the following steps:
[0039] (1) Preparation of hydroxymethylated modified carbon black:
[0040] Mix oxidized carbon black, 120 parts of formaldehyde and 15 parts of sodium hydroxide aqueous solution, stir and reflux at 50-53°C for 5 hours in a nitrogen atmosphere, filter, wash with water until neutral, and dry at 50-55°C to constant weight , to obtain hydroxymethylated modified carbon black;
[0041] (2) Coupling modification method of wood fiber:
[0042] Add 0.4 parts of silane coupling agent to the ethanol solution, stir for 10 minutes to mix evenly, add 8 parts of wood fiber, modify it in a water bath at 58-62°C for 2 hours, take it out and dry it in the air, and dry it in an oven at 115-120°C for 2 hours. Obtain the wood fiber of coupling modification;
[0043] (3) Preparation of rubber compound:
[0044] Set ...
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Abstract
The invention discloses a preparation method of a wear-resistant aging-resistant rubber compound filled with a coupling modified wood fiber. The method comprises the steps of mixing oxygenated black,formaldehyde and a sodium hydroxide water solution, carrying out stirring reflow reaction under the nitrogen atmosphere, filtering, water washing to be neutral, drying to the constant weight, and obtaining hydroxymethylation modified carbon black; adding a silane coupling agent into an ethanol solution, uniformly stirring and mixing, adding a wood fiber, carrying out modification treatment in water bath, taking out for air drying, drying in a drying oven, and obtaining the coupling modified wood fiber; feeding multi-functional modified natural rubber into a torque rheometer, adding zinc oxide,stearic acid, an anti-aging agent and an accelerant, mixing, adding zinc methacrylate, a coupling agent modified white carbon black, the hydroxymethylation modified carbon black and the coupling modified wood fiber, and mixing to obtain the rubber compound. By adopting the hydroxymethylation modified carbon black, the coupling modified wood fiber, and the coupling agent modified white carbon black for reinforcing, the wear-resistant aging-resistant rubber compound is prepared.
Description
technical field [0001] The invention belongs to the technical field of rubber materials for agricultural machinery, and in particular relates to a preparation method of a wear-resistant and aging-resistant mixed rubber filled with coupling modified wood fibers. Background technique [0002] Carbon black is widely used in printing and dyeing, rubber, plastic processing, transportation and other industries due to its characteristics of easy preparation, low price, good wear resistance, and strong ultraviolet shielding ability. Researches at home and abroad have shown that chemical modification of carbon black can greatly improve the performance of carbon black, which is also the frontier hotspot of carbon black research. Research at home and abroad has also used carbon black to modify rubber, and achieved certain research results. However, the research on the modification of rubber by modified carbon black is still in a blank stage. Therefore, it is necessary to study the eff...
Claims
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