Preparation method of modified fly ash microbead rubber and plastic filler

Abstract

The invention discloses a preparation method of modified fly ash microbead rubber and plastic filler, which belongs to the technical field of chemical filler. Its purpose is to provide a kind of modified fly ash microbead rubber that can replace light calcium carbonate filled in rubber and plastic products by corroding and chemically modifying the surface of waste fly ash as raw material. Preparation method of plastic filler. The key points of the technology are: use hydrofluoric acid as an etchant to corrode the surface of the fly ash to form new surfaces and active points; then activate with an activator, nano-modify, couple agent grafted hydrophobic treatment, etc., to obtain Fly ash microbead rubber filler. Its indicators are superior to light calcium carbonate: good reinforcement performance, aging resistance, corrosion resistance, and good compatibility with polymer matrix. It is used to replace light calcium carbonate and filled in rubber and plastic products, which fully meets the technical requirements of rubber and plastic fillers. It not only has a large filling amount and good effect, but also has a simple preparation method and low production cost.

Description

technical field

[0001] The invention relates to a preparation method of modified fly ash microbead rubber and plastic filler, which belongs to the technical field of chemical filler. Background technique

[0002] Fly ash is a solid waste formed from fine dust produced by coal-fired power plants. The quantity is large, and improper disposal will cause pollution. The harmful substances in it will also cause harm to human body and organisms, and it will also occupy a large amount of land. The chemical composition of fly ash is SiO 2 、Al 2 o 3 Mainly, because of its physical activity and chemical activity (potential volcanic ash activity), it can be exploited and utilized as a resource. As a resource, fly ash has high use value and is indispensable for some building materials and products. These facts have been recognized by more and more people. my country's coal resources are very rich, and coal-fired power generation will be the main energy source in my country for a lon...