Economical polystyrene heat-preservation extruded board and preparation method thereof

Abstract

The invention discloses an economical polystyrene heat-preservation extruded board. The economical polystyrene heat-preservation extruded board is prepared from the following components in parts by weight: 400 to 600 parts of polystyrene particles, 10 to 15 parts of butyl peroxybenzoate, 8 to 12 parts of sodium dodecylbenzene sulfonate, 10 to 15 parts of benzoyl peroxide, 0.5 to 1.2 parts of alkenyl succinate, 0.8 to 1.2 parts of zinc dialkyl dithiophosphate, 5 to 10 parts of a nucleating agent, 4 to 8 parts of color master batch, 0.8 to 12 parts of a mildew-proof agent and 3 to 5 parts of a foaming agent, wherein the polystyrene particles are formed by mixing new polystyrene materials, polystyrene recycled materials and polystyrene waste materials and the mixing ratio is 1 to 2 to 2. The new polystyrene materials, the recycled materials and the waste materials are mixed to form a main material, so that the production cost of enterprises is greatly reduced and the economic benefits are improved.

Description

technical field [0001] The invention relates to an extruded plastic board, in particular to an economical thermal insulation extruded board. Background technique [0002] Existing external wall insulation materials on the market mainly use modified benzene board, polyurethane board and extruded board. Among them, benzene board is the cheapest, and its insulation effect is average, and it will absorb water and deform. After the insulation layer is completed, other waterproof measures are required. . Polyurethane is the best performance among existing insulation materials. Polyurethane is used as insulation material in refrigerators and cold storage. The thermal conductivity is far lower than that of benzene board and extruded board. Basically, half the thickness of polyurethane insulation layer can reach The insulation effect of the original thickness of benzene board and extruded board, but the price is much higher than that of benzene board and extruded board. Compared wi...

AI Technical Summary

Problems solved by technology

[0004] However, the strength of the current extruded board itself is relatively high, which causes the board to be brittle, not easy to bend, easy to damage and crack the board, and has poor air permeability. At the same time, the main problem faced by the current extruded board production is the high cost

The main material used in the production of extruded boards is polystyrene particles. The cost of polystyrene itself is relatively low and its performance is excellent. The main reason for the high cost of extruded boards is that polystyrene plastic products are discarded after use. Recycled polystyrene waste generally needs to go through steps such as hot melting, filtration, decolorization, recrystallization, and granulation. This step is likely to cause molecular chain breakage. The polystyrene recycled materials after these broken chains are used directly for wallboards Production, the strength of the product obtained is low, the product performance is low, and the recovery effect cannot be achieved, so it is difficult to recycle and reuse, resulting in the existing extruded board being almost completely produced with new materials, and the production cost cannot be reduced naturally.

Images