High-temperature-resistant plastic woven bag and preparation method thereof

Abstract

The invention relates to a high-temperature-resistant plastic woven bag and a preparation method thereof. The high-temperature-resistant plastic woven bag is prepared from raw materials in parts by weight as follows: 100 parts of polypropylene granules, 185-195 parts of nano calcium carbonate powder, 4.3-4.7 parts of paraffin, 3-4 parts of stearic acid, 5.2-5.8 parts of a coupling agent, 0.4-0.5 parts of an antioxidant, 7-8 parts of polyoxymethylene, 20-30 parts of nano aluminum hydroxide, 0.5-1 part of graphene, 26-28 parts of linear low density polyethylene, 0.25 parts of polyethylene wax, 3.8-4.0 parts of an ethylene-methyl acrylate copolymer 1125AC, 1.8-2.0 parts of tributyl citrate and 0.3-0.5 parts of turpentine oil. The high-temperature-resistant plastic woven bag has excellent performance of common woven bags in the market, and heat resistant strength of the woven bag is further greatly improved.

Description

technical field [0001] The invention belongs to the field of packaging materials, and in particular relates to a high-temperature-resistant plastic woven bag and a preparation method thereof. Background technique [0002] Plastic woven bags are made of polypropylene (PP) and polyethylene (PE) resins as the main raw materials, adding a small amount of auxiliary materials, mixing them and melting them through an extruder, extruding plastic films and cutting them into filaments, which are processed at a temperature lower than the melting temperature of the resins Stretching, making high-strength, low-elongation flat yarn through molecular orientation and heat setting, and then winding, weaving, cutting, and sewing to make plastic woven bags. Plastic woven bags are divided into TA type, A type, B type and C type according to the loading quality range, TA type is allowed to load 10~20kg, A type is allowed to load 21~30kg, B type is allowed to load 31~50kg , Type C is allowed to ...

AI Technical Summary

Problems solved by technology

As a result, the softening temperature of the raw material is low, and it can only be used for material packaging below 100 °C

The flame-retardant plastic woven bags currently on the market are basically anti-aging types, that is, to prevent the plastic from continuing to produce thermal oxygen aging at high temperatures, thereby prolonging the service life of plastic products, but it cannot improve the temperature resistance of woven bags.

However, these ordinary polypropylene woven bag materials are easy to cause internal damage when they are filled with high-temperature materials. If the temperature is too high, the woven bag may be scalded. The bag is aging and can hold high temperature materials

[0004] There are also related technologies that publicly solve the high temperature resistance of plastic woven bags, but most of the existing technologies use inorganic salts such as calcium carbonate, nano-calcium carbonate, and silicate (clay, actinolite, etc.) as fillers, combined with polypropylene-based Co-melting modification of materials to improve the softening temperature and impact resistance of plastic woven bags, and at the same time increase the amount of fillers added and reduce production costs, but inorganic salt fillers such as silicates and carbonates are not easy to biodegrade and have been used The alkalization of the soil will cause serious environmental pollution, and the physical properties and performance such as impact strength, relative tensile force and elongation at break are still not very ideal