Method for increasing surface roughness of steel wire for rubber pipe by adopting self-roughening process
A technology of roughness and steel wire, which is applied in the field of increasing the surface roughness of steel wire for rubber hose by self-roughening process, which can solve the problems affecting the steel wire for high-pressure hose reinforcement, difficult stainless steel surface, difficult to achieve roughness, etc., and achieve good mechanical resistance Effects of friction, improvement of bonding force, and strong rigidity
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Embodiment 1
[0023] First, 60g of paraformaldehyde, 321g of urushiol and 875g of primary amine-based cage polysilsesquioxane were added to the round-bottomed flask, and then 1300g of solvent 1,4-dioxane was added to form a mixed solution. The mixed solution was heated at 80 Reflux reaction at °C for 8 hours, and finally remove the solvent 1,4-dioxane to obtain a urushiol-based benzoxazine prepolymer. Secondly, the steel wire is washed with a 45% ethanol / water mixed solution by mass before use to remove impurities such as grease on the surface, and then the urushiol-based benzoxazine prepolymer is added to ethanol to configure a mass percentage of 3 % ethanol solution, then the treated steel wire is immersed in urushiol-based benzoxazine prepolymer / ethanol solution, the steel wire is taken out after 30 minutes, and placed at a temperature of 50 ° C for 20 minutes, until the ethanol is completely volatilized. Finally, the treated steel wire is further cured at 190° C. for 0.5 hours to obtain...
Embodiment 2
[0025] First, 60g of paraformaldehyde, 321g of urushiol and 875g of primary amine-based cage polysilsesquioxane were added to the round-bottomed flask, and then 2000g of solvent 1,4-dioxane was added to form a mixed solution. The mixed solution was heated at 90 The reaction is refluxed at °C for 7 hours, and finally the solvent 1,4-dioxane is removed to obtain a urushiol-based benzoxazine prepolymer. Secondly, the steel wire is washed with a 60% ethanol / water mixed solution by mass before use to remove impurities such as grease on the surface, and then the urushiol-based benzoxazine prepolymer is added to ethanol to configure a mass percentage of 4 % ethanol solution, then the treated steel wire is soaked in the urushiol-based benzoxazine prepolymer / ethanol solution, the steel wire is taken out after 30 minutes, and placed at a temperature of 60 ° C for 30 minutes, until the ethanol is completely volatilized. Finally, the treated steel wire is further cured at 180°C for 0.8 ho...
Embodiment 3
[0027]First, 60g of paraformaldehyde, 321g of urushiol and 875g of primary amino-based cage polysilsesquioxane were added to the round-bottomed flask, and then 3000g of solvent 1,4-dioxane was added to form a mixed solution. The mixed solution was heated at 90 The reaction is refluxed at °C for 9 hours, and the solvent 1,4-dioxane is finally removed to obtain a urushiol-based benzoxazine prepolymer. Secondly, the steel wire is washed with a 70% ethanol / water mixed solution by mass before use to remove impurities such as grease on the surface, and then the urushiol-based benzoxazine prepolymer is added to ethanol to prepare a mass percentage of 5 % ethanol solution, then the treated steel wire is immersed in urushiol-based benzoxazine prepolymer / ethanol solution, the steel wire is taken out after 30 minutes, and placed at a temperature of 60 ° C for 30 minutes, until the ethanol is completely volatilized. Finally, the treated steel wire is further cured at 200° C. for 1 hour to...
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