Energy-saving cooling toughening filling master batch and preparation method thereof

Abstract

The invention discloses an energy-saving cooling toughening filling master batch and a preparation method thereof. The master batch comprises, by weight, 60 to 80% of heavy calcium carbonate, 6 to 10% of a dispersant, 10 to 20% of a carrier resin, 1 to 5% of a cooling agent, 0.3 to 1% of an anti-oxidant, 1 to 5% of a flexibilizer and 1 to 2% of a coupling agent. The preparation method comprises the following steps: placing the weighed components except the cooling agent into a high-speed mixer for high-speed mixing and discharging an obtained mixture until the components are completely coated; after the mixture is completely cooled, putting the mixture into the high-speed mixer for low-speed mixing, adding the weighed cooling agent and discharging an obtained mixture for subsequent usage after uniform mixing; and putting the mixture into a double screw extruder for extrusion and carrying out granulation and packaging so as to obtain the finished product--the master batch. According to the invention, consumption and cost are reduced, tensile strength of a plastic woven bag is substantially improved, and quality is enhanced.

Description

technical field [0001] The invention relates to the field of preparation of plastic products, in particular to an energy-saving, temperature-reducing and toughening filler masterbatch and a preparation method thereof. Background technique [0002] Plastic woven bag is a kind of plastic packaging commonly used in production and life. The use of filler masterbatch to reduce production costs is a common method in the production of plastic woven bags. With the improvement of living standards and the increasingly fierce market competition, people have higher and higher requirements for plastic woven bags, requiring products to have higher tensile strength and lower prices. This requires better reduction of energy consumption and production costs in the production process. Although the addition of ordinary filler masterbatch will reduce the production cost, it will greatly reduce the tensile strength of the woven bag. The processing temperature in the production of woven bags i...

AI Technical Summary

Problems solved by technology

The processing temperature in the production of woven bags is generally above 230°C. Higher temperatures not only need to consume a lot of electric energy for heating, but also cause damage to the molecular structure of plastics, greatly reducing the tensile strength of woven bags.

At present, there is no filler masterbatch that can reduce the production temperature and does not significantly affect the tensile strength of plastic woven bags after being added.