A kind of preparation method of using hydroxyethyl methacrylate rubber to graft modified nano-calcium carbonate to strengthen natural rubber composite material
A technology of hydroxyethyl methacrylate and nano-calcium carbonate, which is applied in the field of preparation of natural rubber composite materials, can solve problems such as poor rubber reinforcement effect, and achieve the effect of improving dispersion effect and strong bonding effect
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Embodiment 1
[0040] Weigh 15 parts of calcium carbonate with a particle size of about 30nm, add ethanol that just soaks it and rinse it with deionized water, then add 3 parts of isopropyl titanate tristearate titanate and 0.4 parts of dodecyl Sodium benzenesulfonate and 100 parts of deionized water were stirred and ultrasonically dispersed for 30 minutes, and then 5 parts of hydroxyethyl methacrylate rubber latex with a graft rate of 5% and a total solid content of 25% were added in terms of dry rubber, and the stirring was continued. Ultrasonic dispersion was carried out for 30 minutes to prepare calcium carbonate emulsion dispersion; 100 parts of concentrated natural rubber latex with a total solid content of 60% based on dry glue was stabilized by using 0.5 part of fatty alcohol polyoxyethylene ether simultaneously, and the above-mentioned The calcium carbonate emulsion dispersion is evenly mixed into the stable concentrated natural rubber latex, and then 1.5 parts of ammonium persulfate...
Embodiment 2
[0042] Weigh 60 parts of calcium carbonate with a particle size of about 60 nm, add ethanol that just soaks it and rinse it with deionized water, then add 4 parts of isopropyl titanate tristearate titanate and 0.5 parts of dodecane Sodium phenyl sulfonate and 100 parts of deionized water were stirred and ultrasonically dispersed for 30 minutes, and then 30 parts of hydroxyethyl methacrylate rubber latex with a grafting rate of 50% and a total solid content of 20% were added in terms of dry glue, and the stirring was continued. Ultrasonic dispersion was carried out for 30 minutes to prepare calcium carbonate emulsion dispersion; 100 parts of concentrated natural rubber latex with a total solid content of 60% based on dry glue was stabilized by using 0.5 part of fatty alcohol polyoxyethylene ether simultaneously, and the above-mentioned The calcium carbonate emulsion dispersion is evenly mixed into the stable concentrated natural rubber latex, and after stirring evenly, it is coa...
Embodiment 3
[0044] Weigh 40 parts of calcium carbonate with a particle size of about 50 nm, add ethanol that just soaks it and rinse it with deionized water, then add 2 parts of isopropyl titanate tristearate and 0.3 parts of dodecane Sodium phenyl sulfonate and 100 parts of deionized water were stirred and ultrasonically dispersed for 30 minutes, and then 20 parts of hydroxyethyl methacrylate rubber latex with a graft rate of 30% and a total solid content of 20% in terms of dry glue were added, and continued to use After stirring and ultrasonically dispersing for 30 minutes, use ethanol to coagulate, tablet, wash, and dry to make a dry gel-like hydroxyethyl methacrylate rubber-grafted calcium carbonate; then 100 parts of dry natural The rubber is blended with the above-mentioned dry colloidal hydroxyethyl methacrylate rubber grafted calcium carbonate, and then 2.0 parts of ammonium persulfate, 3.5 parts of sulfur, 6.0 parts of zinc oxide, 1.0 parts of stearic acid, 1.3 parts of bismuth S...
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Abstract
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