Resin recycling modified technique

Abstract

A resin recycling modified technique includes the steps: (1) collecting waste resin, placing the collected waste resin on a vibrating screen to separate large impurities, crushing waste plastics intoplastic granules, feeding the plastic granules into a cold air drying device, and performing cold air drying for 30-35 minutes at the temperature of 50-55 DEG C; feeding the resin granules after coldair drying into a vacuum tumbler to tumble the resin granules, vacuumizing once every 5-8 minutes in tumbling, tumble the resin granules for 5-10 minutes after vacuumizing is completed once, discharging vacuum, and cycling the steps for 2-4 times; (3) draining moisture of sprayed resin granules, and feeding the resin granules into a drying device to dry the resin granules at the temperature of 55-60 DEG C until the surfaces of the resin granules do not have moisture; (4) feeding the dried resin granules into a low-temperature device to perform low-temperature treatment for 20 minutes at the temperature of 15 DEG C below zero; (5) mixing the resin granules after cold-resistant treatment and activating agents according to the weight ratio of 1:(0.05-0.1), feeding mixture into an extruding machine for granulation to modify resin.

Description

technical field [0001] The invention relates to the technical field of resin modification, in particular to a modification technology for resin recycling. Background technique [0002] Since the formation of the modern resin industry in 1930, after more than 80 years of rapid development, the resin industry has become the mainstay of light industry. With the wide application of resin products, huge resin pollution has also been produced, which has caused great damage to the global ecological environment. Landfill and incineration are the main treatment methods for waste resin waste. However, landfill treatment increases the pressure on land resources due to its large footprint. At the same time, waste plastics are difficult to degrade, which seriously hinders water penetration and groundwater circulation. , Secondly, the additives in waste plastics will also cause secondary pollution to the land. Incineration treatment CO, polycyclic aromatic hydrocarbons and heavy metals ...

AI Technical Summary

Problems solved by technology

[0003] For the recycling of these waste resins, it needs to be crushed, cleaned, and separated from impurities, etc. The traditional recycling process and recycling equipment are not high in technology, the recycling cost is high, and the cost performance of recycling is not ideal.

The quality of the prepared recycled resin is not high and can only be used for some low-end products

Especially in some special environments, such as low temperature environment and high pressure environment, ordinary recycled materials cannot meet the high-strength working environment, poor low temperature resistance, and easy to be brittle

And it also has the defects of low impact strength, poor elasticity and stress crack resistance, which has caused a great impact on the development of the resin regeneration industry.