EVA hot melt adhesive for uhmwpe product bonding and preparation method thereof
A hot-melt adhesive and bonding technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of low thermal stability, intolerance to fat oil, limited heat resistance, etc. problems, to achieve the effect of easy industrial production, less solvent usage, and broad application prospects
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Embodiment 1
[0029] 5% MAH is first dissolved in 3% acetone to form a solution, then add 91% EVA to the high-speed mixer and slowly add MAH acetone solution, disperse and mix evenly, and add it to the reactive twin-screw extruder through the feeding port, at a temperature of 80 ° C After reaching the molten state under the conditions, 0.5% BPO, 0.3% DMF, and 0.2% styrene are added to the extruder through the injection port of the reaction extruder, and the EVA-g-MAH obtained by reaction extrusion granulation. Then the prepared 25% EVA-g-MAH, 40% EVA (VA: 28%, MFR: 400g / 10min), 20% terpene resin, 3.5% PE paraffin, 1.5% antioxidant 1010, 10% HDPE -g-MAH, each component is melted and blended by a strong shear internal mixer, and then extruded and granulated by a twin-screw at a temperature of 110°C to prepare a hot melt adhesive.
Embodiment 2
[0031] 2.5% MAH is firstly dissolved in 3% acetone to form a solution, then add 93.5% EEA to the high-speed mixer and slowly add MAH acetone solution, disperse and mix evenly, and add it to the reactive twin-screw extruder through the feeding port, at a temperature of 90°C After reaching the molten state under the conditions, 0.5% AIBN and 0.5% DMF are added to the extruder through the injection port of the reaction extruder, and the EEA-g-MAH obtained by reaction extrusion granulation. Then the prepared 30% EEA-g-MAH, 50% EVA (VA: 30%, MFR: 125g / 10min), 8% terpene resin, 3% PE paraffin, 1% antioxidant 1010, 8% HDPE -g-MAH, each component is melted and blended by a strong shear internal mixer, and then extruded and granulated by a twin-screw at a temperature of 120°C to prepare a hot melt adhesive.
Embodiment 3
[0033] 7.5% MAH is first dissolved in 2% petroleum ether to form a solution, then add 90% EMA to the high-speed mixer and slowly add MAH petroleum ether solution, disperse and mix evenly, and add it to the reactive twin-screw extruder through the feeding port, at 85 After reaching the molten state under the temperature condition of ℃, add 0.3% DCP, 0.1% MDCA, and MA0.1% to the extruder through the injection port of the reaction extruder, and the EMA-g-MAH obtained by reaction extrusion granulation . Then the prepared 25% EMA-g-MAH, 55% EVA (VA: 38%, MFR: 60g / 10min), 10% terpene resin, 3.5% PE paraffin, 1.5% antioxidant 1076, 5% HDPE -g-MAH, each component is melted and blended by a strong shear internal mixer, and then extruded and granulated by a twin-screw at a temperature of 105°C to prepare a hot melt adhesive.
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