Raw material composition special for rotational molding foamed product, and preparation method and application method thereof
A technology of raw material composition and foamed products, applied in the direction of coating, etc., can solve the problems of less involving the preparation and application method of foam core layer composition, poor fluidity, etc.
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[0050] Example 1 Preparation of a special raw material composition for rotationally molded foamed products, and for the manufacture of rotationally molded foamed products
[0051] a. Preparation of intermediate foam layer resin:
[0052] I. Mixing: Put 100 parts by weight of linear low-density polyethylene (LLDPE) into a high-speed mixer that has been heated to 60°C in advance, start the high-speed mixer, and when the temperature of LLDPE rises to 60°C, add the pre-mixed homogeneous cross-linked 0.5 parts by weight of foaming agent, 0.1 parts by weight of blowing agent, and 0.2 parts by weight of nucleating agent are mixed at 60°C for 5 minutes and then discharged, sealed and stored for granulation;
[0053] II granulation: control the temperature at 10±2°C above the melting point of LLDPE, extrude and granulate, and store in a sealed container; it is used for grinding and screening;
[0054] III Grinding and sieving: After grinding, sieve the powder with a particle size of 2...
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