Production method of modified polystyrene foam plastic plates

Abstract

The invention provides a production method of modified polystyrene foam plastic plates. The method comprises the following steps: 1, prefoaming: uniformly mixing 80-90 wt% of polystyrene, 5-10 wt% of nano-particles, 5-10 wt% of a pentane foaming agent and 2-4 wt% of calcium carbonate, putting the obtained mixture in a pre-foaming machine, and pre-foaming the mixture; 2, slaking: allowing the foamed mixture to stand in 23 DEG C environment for 10 h; 3, carrying out flame retardation treatment: adding a flame retardant and a smoke suppressant to the slaked mixture, and mixing above materials until the materials are uniform; 4, carrying out extrusion molding: putting the mixture in an extruder, and carrying out extrusion molding; and 5, slaking a product: allowing the product obtained after extrusion molding to stand in a 55 DEG C oven for 10-15 h in order to obtain the modified polystyrene foam plastic plates. The modified polystyrene foam plastic plates produced through the method have the characteristics of good fireproof property, smoke suppression, large strength and large toughness.

Description

technical field [0001] The invention relates to the field of foamed plastics, in particular to a method for preparing a modified polystyrene foamed plastic board. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for building materials. For the comfort and privacy of life and work, people have put forward requirements for sound insulation of building interior wall materials; at the same time, in order to shorten construction energy consumption and time, it is also necessary Lightweight interior wall materials. In order to solve the problem of lightweight and sound-insulating interior wall materials, different lightweight sound-insulating materials have appeared on the market, such as foam concrete, resin-based foam material boards, and the like. [0003] Foam concrete has the effect of light heat insulation, but the foam concrete process is complicated, the porosity is high, the strength is low, and it is acco...

AI Technical Summary

Problems solved by technology

[0003] Foam concrete has the effect of light heat insulation, but the foam concrete process is complicated, the porosity is high, the strength is low, and it is accompanied by the phenomenon of cracking and water absorption, which seriously affects the practicability and aesthetics of the inner wall of the building.

Polystyrene foam is widely used in the field of packaging and construction because of its excellent properties such as impact resistance and heat insulation. However, as an organic hydrocarbon, polystyrene materials have a limiting oxygen index of only 18%, which belongs to the category of flammable materials. range, and will produce a lot of smoke, toxic gas and melt droplets during the combustion process; at the same time, the strength and toughness of polystyrene foam can not meet the needs of building interior wall materials