Graphene/nylon composite flexible eyeglass frame
A composite flexible and graphene technology, applied in glasses/goggles, instruments, optics, etc., can solve problems such as glasses frames are easy to break, glasses are not considered, and there are potential safety hazards, etc. It achieves strength and durability, simple and convenient preparation, tactile effect
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Embodiment 1
[0034] The graphene-nylon composite flexible spectacle frame of the present invention includes lenses and temples. The molding method of described lens holder and mirror leg, the steps are as follows (see figure 1 ):
[0035] 1) Pre-reaction of raw materials: Add nylon slices and graphene dispersion liquid into the reactor and stir and mix. The mass ratio of nylon slices and graphene dispersion liquid in the reactor is 20:1; the reaction temperature is 250°C, and the reaction pressure is 0.7 MPa, the reaction times was 10 hours; after the reaction was completed, take out and obtain the premix;
[0036] 2) Preparation of picture frame masterbatch: Extrude and granulate the premixed material through a twin-screw extruder at a temperature of 125°C to obtain picture frame masterbatch;
[0037] 3) Preparation of lens frame and temples: Inject the frame masterbatch under the conditions of injection mold temperature of 75°C, injection temperature of 255°C, injection time of 3.5S an...
Embodiment 2
[0044] Different from Example 1, in the present example, in the step 1) of the forming method of the lens frame and mirror legs, the mass ratio of the nylon chips and the graphene dispersion in the reactor is 21:1; the reaction temperature is 230°C, the reaction pressure is 0.5MPa, and the reaction time is 8 hours; in step 2), the premixed material is extruded and granulated at a temperature of 120°C through a twin-screw extruder; in step 3), the mirror frame mother The pellets were injection molded under the conditions that the injection mold temperature was 70°C, the injection temperature was 250°C, the injection time was 3S, and the holding pressure was 0.4MPa; the sucrose ester was sucrose palmitate, and the dosage was 4 parts; the dosage of polyvinylpyrrolidone It is 8 parts; The consumption of graphene oxide powder is 12 parts, and wherein, the consumption in described step 2. is 8 parts.
Embodiment 3
[0046] Different from Example 1, in the present example, in the step 1) of the molding method method of the lens frame and mirror legs, the mass ratio of the nylon chips and the graphene dispersion in the reactor is 23:1; the reaction temperature The temperature is 250°C, the reaction pressure is 1MPa, and the reaction time is 12 hours; in step 2), the premixed material is extruded and granulated at a temperature of 130°C through a twin-screw extruder; in step 3), the mirror frame mother The pellets are injected into the frame mold under the conditions of injection mold temperature of 80°C, injection temperature of 260°C, injection time of 4S and holding pressure of 0.5MPa; sucrose ester is sucrose palmitate, and the dosage is 8 parts; The consumption of vinylpyrrolidone is 10 parts; the consumption of graphene oxide powder is 24 parts, wherein, the consumption in described step ② is 16 parts.
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Abstract
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