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Method for preparing polystyrene extruded sheet from waste plastics

A technology of polystyrene and waste plastics, applied in the field of material science, can solve problems such as white pollution, and achieve the effects of saving energy, solving white pollution, and low cost

Inactive Publication Date: 2015-07-01
青岛欧克斯新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the advantages of low cost, energy saving, effectively solving the "white pollution" problem that plagues the country, and beautifying the environment

Method used

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  • Method for preparing polystyrene extruded sheet from waste plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing polystyrene extruded board by using waste plastics includes the following steps:

[0023] Step 1: Use waste plastics to prepare polystyrene recycled particles: remove waste plastics, cut, melt, and pelletize to prepare polystyrene recycled particles, and then cool them for use;

[0024] Step 2: Prepare the polystyrene extruded board: take 45 parts by weight of the polystyrene regenerated particles prepared in step 1, 5 parts of hexabromocyclododecane, and 2 parts of calcium-zinc composite stabilizer into the mixing tank and mix evenly , Heat to 200℃, melt and mix the materials to form a polymer melt, then add 5 parts of Freon; cool the melt to 100℃, then send it to the extruder for extrusion molding.

[0025] According to the test in Example 1, the compressive strength is ≥280kPa, the thermal conductivity is ≤0.03W / mk, the water absorption is ≤1% (V / V), and the water vapor transmission coefficient is ≤3ng / m.s.Pa.

Embodiment 2

[0027] A method for preparing polystyrene extruded board by using waste plastics includes the following steps:

[0028] Step 1: Use waste plastics to prepare polystyrene recycled particles: remove waste plastics, cut, melt, and pelletize to prepare polystyrene recycled particles, and then cool them for use;

[0029] Step 2: Prepare polystyrene extruded board: take 75 parts by weight of the polystyrene regenerated particles prepared in step 1, 15 parts of tetrabromobisphenol A bisallyl ether, and 13 parts of dibasic lead sulfate into the stirring Mix uniformly in the kettle, heat to 350°C to melt and mix the materials to form a polymer melt, then add 15 parts of Freon; cool the melt to 125°C, then send it to the extruder for extrusion molding.

[0030] According to the test in Example 2, the compressive strength is ≥280kPa, the thermal conductivity is ≤0.03W / mk, the water absorption is ≤1% (V / V), and the water vapor permeability coefficient is ≤3ng / m.s.Pa.

Embodiment 3

[0032] A method for preparing polystyrene extruded board by using waste plastics includes the following steps:

[0033] Step 1: Use waste plastics to prepare polystyrene recycled particles: remove waste plastics, cut, melt, and pelletize to prepare polystyrene recycled particles, and then cool them for use;

[0034] Step 2: Prepare the polystyrene extruded board: take 60 parts by weight of the polystyrene regenerated particles prepared in Step 1, 8 parts of brominated epoxy oligomer, 8 parts of tribasic lead sulfate, add them to the mixing tank and mix Evenly, heat to 300°C to melt and mix the materials to form a polymer melt, then add 10 parts of Freon; cool the melt to 110°C, then send it to the extruder for extrusion molding.

[0035] According to the test in Example 3, the compressive strength is ≥280kPa, the thermal conductivity is ≤0.03W / mk, the water absorption is ≤1% (V / V), and the water vapor permeability coefficient is ≤3ng / m.s.Pa.

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Abstract

The invention belongs to the field of material science and specifically relates to a method for preparing a polystyrene extruded sheet from waste plastics. The method comprises the following steps: step 1, preparing polystyrene regenerated particles from the waste plastics; and step 2, preparing the polystyrene extruded sheet. The method for preparing the polystyrene extruded sheet from the waste plastics has the advantages of low cost, energy source conservation and simple preparation process; the problem of white pollution bothering the state is effectively solved; and meanwhile, the prepared polystyrene extruded sheet is high in mechanical strength and good in heat resistance.

Description

Technical field [0001] The invention belongs to the field of materials science, and specifically relates to a method for preparing polystyrene extruded boards by using waste plastics. Background technique [0002] Polystyrene (PS) plastic is a versatile plastic with a wide range of uses. Its applications are mainly divided into three categories: injection molded products, extruded products and foam products. PS foam products have developed rapidly due to their low raw material cost, excellent performance and wide range of uses. The current production volume has ranked second in foam plastics, second only to PU foam. Because of its low density, large volume, good thermal insulation performance, and convenient installation, PS foam products are widely used in thermal insulation layers of various buildings and cold storage and disposable packaging materials, such as various household appliances and industrial accessories. And the transport packaging of the product. In addition, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K5/03C08K5/136C08K3/30C08K5/02
Inventor 刘永城全洪珠刘永欢
Owner 青岛欧克斯新型建材有限公司
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