Polypropylene composite material and preparation method thereof
A composite material and polypropylene technology, which is applied in the field of polypropylene composite material and polypropylene composite material preparation, can solve the problems of high molding shrinkage, insufficient toughness, easy brittle cracking, etc., to improve porosity and enhance modification effect. Effect
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Embodiment 1
[0029] Take a certain amount of sepiolite (two types of sepiolite powder and sepiolite wool), add it to a large beaker according to the mass ratio of sepiolite to water at 1:5, and hydrate overnight. Add a certain volume of dilute hydrochloric acid, stir until no bubbles are generated, and remove calcium carbonate; after standing for a period of time, take the suspension with uniform color in the upper layer, wash and filter until neutral. Separation and purification on a centrifuge to obtain purified sepiolite. After the purified sepiolite is filtered, washed, and vacuum-dried at 120°C, it is ground and put into a ziplock bag for use.
[0030] After the sepiolite is purified, use hydrochloric acid for surface treatment, soak the sepiolite in deionized water for 20 minutes, separate the scum, filter it, soak it with 1.0mol / L HCl solution at a constant temperature of 70°C for 10 hours, and control the solid-liquid ratio 10:1, then wash with distilled water, vacuum filter, remov...
Embodiment 2
[0035] Take a certain amount of sepiolite (two types of sepiolite powder and sepiolite wool), add it to a large beaker according to the mass ratio of sepiolite to water at 1:5, and hydrate overnight. Add a certain volume of dilute hydrochloric acid, stir until no bubbles are generated, and remove calcium carbonate; after standing for a period of time, take the suspension with uniform color in the upper layer, wash and filter until neutral. Separation and purification on a centrifuge to obtain purified sepiolite. After the purified sepiolite is filtered, washed, and vacuum-dried at 120°C, it is ground and put into a ziplock bag for use.
[0036] After the sepiolite is purified, use hydrochloric acid for surface treatment, soak the sepiolite in deionized water for 25 minutes, separate the scum, filter it, soak it with 0.9mol / L HCl solution at a constant temperature of 70°C for 10 hours, and control the solid-liquid ratio 10:1, then wash with distilled water, vacuum filter, remov...
Embodiment 3
[0041] Take a certain amount of sepiolite (two types of sepiolite powder and sepiolite wool), add it to a large beaker according to the mass ratio of sepiolite to water at 1:5, and hydrate overnight. Add a certain volume of dilute hydrochloric acid, stir until no bubbles are generated, and remove calcium carbonate; after standing for a period of time, take the suspension with uniform color in the upper layer, wash and filter until neutral. Separation and purification on a centrifuge to obtain purified sepiolite. After the purified sepiolite is filtered, washed, and vacuum-dried at 120°C, it is ground and put into a ziplock bag for use.
[0042] After the sepiolite is purified, use hydrochloric acid for surface treatment, soak the sepiolite in deionized water for 30 minutes, separate the scum, filter it, soak it with 1.2mol / L HCl solution at a constant temperature of 70°C for 10 hours, and control the solid-liquid ratio 10:1, then washed with distilled water, vacuum filtered to...
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