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Preparation method of polypropylene color master batch
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A technology of polypropylene and color masterbatch, which is applied in the field of color masterbatch, can solve the problem that color masterbatch is not easy to color, and achieve the effect of improving wettability and coloring performance
Active Publication Date: 2022-01-11
NINGBO COLOR MASTER BATCH
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Problems solved by technology
[0004] However, because polypropylene has no polar groups in its molecular chain, the color masterbatch is not easy to color it.
Method used
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Embodiment 1
[0030] Add 10g of cadmium yellow JF-12 into 1000ml of water, stir at 500r / min for 4h, settle for 3h and then separate by sedimentation, add the solid to 200ml of 3,3',4,4'-biphenyltetracarboxylic dianhydride In the amide organic solution (the concentration of 3,3',4,4'-biphenyltetracarboxylic dianhydride is 8wt%), heated to 45°C, stirred for 6h, filtered, and dried at 80°C for 10h.
Embodiment 2
[0035] The preparation method of the polypropylene masterbatch of the present embodiment is as follows:
[0036] S1. Add 200g of cadmium yellow JF-12 into 5000ml of water, stir at 500r / min for 4h, settle and separate after standing for 3h, add the solid to 3,3',4,4'-biphenyltetracarboxylic dianhydride in dimethyl In the organic solution of phenylacetamide (the concentration of 3,3',4,4'-biphenyltetracarboxylic dianhydride is 8wt%), heated to 45°C, stirred for 6h, filtered, dried at 80°C for 10h, and ground Sieve to get 5000-10000 mesh powder.
[0037] S2. Mix 100g of powder with 20g of ethylene-vinyl acetatecopolymer, and then extrude and granulate through a twin-screw extruder. The rotational speed of the twin-screw extruder is 300r / min. The temperature in zone 160°C, the temperature in zone 2 is 165°C, the temperature in zone 3 is 170°C, the temperature in zone 4 is 170°C, the temperature in zone 5 is 175°C, the temperature in zone 6 is 175°C, and the temperature in zone 7...
Embodiment 3
[0040] The preparation method of the polypropylene masterbatch of the present embodiment is as follows:
[0041] S1. Add 150g of cobalt blue JF-B2805 into 3000ml of water, stir at 600r / min for 4h, settle and separate after standing for 4h, add the solid to 2000ml of dimethyl In the organic solution of phenylacetamide (the concentration of 3,3',4,4'-biphenyltetracarboxylic dianhydride is 5wt%), heated to 50°C, stirred for 5h, filtered, dried at 85°C for 9h, and ground Sieve to get 5000-10000 mesh powder.
[0042] S2. Get 100g of powder and 30g of ethylene-vinyl acetatecopolymer and mix them, then extrude and granulate through a twin-screw extruder. The speed of the twin-screw extruder is 400r / min. The temperature in zone 160°C, the temperature in zone 2 is 165°C, the temperature in zone 3 is 170°C, the temperature in zone 4 is 170°C, the temperature in zone 5 is 175°C, the temperature in zone 6 is 175°C, and the temperature in zone 7 is 165°C.
[0043] S3, mixing the extruded ...
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Abstract
The invention belongs to the technical field of color master batches, and relates to a preparation method of a polypropylene color master batch. The method comprises the following steps: S1, adding toner into water, stirring and dispersing for 1-5 hours, standing for 2-5 hours, then settling and separating, adding a solid into an organic solution of biphenyltetracarboxylic dianhydride, heating to 40-50 DEG C, stirring for 2-10 hours, filtering, drying, grinding and sieving to obtain powder particles; S2, mixing the powder particles with an ethylene-vinyl acetatecopolymer (EVA), and then extruding and granulating through a double-screw extruder; and S3, mixing the extruded and granulated material obtained in the step S2 with polypropylene, a dispersing agent and an antioxidant, and then extruding and granulating through a double-screw extruder to obtain the polypropylene color master batch. The obtained polypropylene color master batch has excellent coloring property and has no influence on the mechanical property of polypropylene.
Description
technical field [0001] The invention belongs to the technical field of color masterbatches, and relates to a preparation method of polypropylene color masterbatches. Background technique [0002] Polypropylene (PP) is one of the five general-purpose plastics. It has excellent mechanical properties, non-toxicity, light weight, insulation, chemical corrosion resistance, and easy processing. It has been widely used in automobiles, electronics, construction, packaging and other fields. With the improvement of people's living standards, the aesthetic requirements for polypropylene plastic products are getting higher and higher. Correspondingly, the demand for polypropylene plastic coloring is stronger. [0003] Traditional polypropylene plastic coloring is directly mixed with powdered colorant and polypropylene resin. The disadvantage is that the colorant has poor compatibility with polypropylene, and the colorant is easy to fly when added, causing environmental pollution and end...
Claims
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