Method for producing polystyrene extruded sheet with compressive strength larger than 700 kPa

A polystyrene, compressive strength technology, applied in the field of high-strength polystyrene extruded board production formula, to achieve the effect of reasonable process design

Inactive Publication Date: 2010-11-24
南京法宁格节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, extruded panels widely used in the market for wall and roof insulation have a compressive strength of less than 500kPa; while extruded panels used for high-speed railways and airport runway ground construction require a compressive strength greater than 700kPa. High-strength extruded boards with a strength greater than 700kPa are still blank

Method used

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  • Method for producing polystyrene extruded sheet with compressive strength larger than 700 kPa
  • Method for producing polystyrene extruded sheet with compressive strength larger than 700 kPa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production method of polystyrene extruded board with compressive strength greater than 700kPa is as follows:

[0025] 1. Weigh the following raw materials according to the weight ratio of raw materials for producing polystyrene extruded boards with a compressive strength greater than 700kPa:

[0026] General-purpose polystyrene (GPPS): 100Kg;

[0027] High impact polystyrene (HIPS): 4Kg;

[0028] Blowing agent: monochlorodifluoromethane (HCFC-22) 10Kg;

[0029] Nucleating agent: talc powder 0.1Kg;

[0030] Color masterbatch: yellow masterbatch 0.2Kg;

[0031] Flame retardant: hexabromocyclododecane 2.5Kg.

[0032] 2. The general polystyrene (GPPS), high-impact polystyrene (HIPS), nucleating agent talcum powder, yellow masterbatch and resistance are prepared according to the above-mentioned raw materials in parts by weight through the mixing and feeding device. The fuel hexabromocyclododecane solid components were mixed and added to the hopper of the No. 1 plastic extruder.

[00...

Embodiment 2

[0041] The production method of polystyrene extruded board with compressive strength greater than 700kPa is as follows:

[0042] 1. Weigh the following raw materials according to the weight ratio of raw materials for producing polystyrene extruded boards with a compressive strength greater than 700kPa:

[0043] General-purpose polystyrene (GPPS): 100Kg;

[0044] High impact polystyrene (HIPS): 5Kg;

[0045] Blowing agent: liquid carbon dioxide 8Kg, 1-chloro-1,1-difluoroethane (HCFC-142b) 4Kg; Kg;

[0046] Nucleating agent: talc powder 0.5Kg;

[0047] Color masterbatch: green masterbatch 0.3Kg;

[0048] Flame retardant: hexabromocyclododecane 3Kg.

[0049] 2. General polystyrene (GPPS), high-impact polystyrene (HIPS), nucleating agent, color masterbatch and flame retardant are prepared according to the above-mentioned raw materials in parts by weight through the mixing and feeding device The solid components are mixed and added to the hopper of the No. 1 plastic extruder.

[0050] 3. Raise ...

Embodiment 3

[0058] The production method of polystyrene extruded board with compressive strength greater than 700kPa is as follows:

[0059] 1. Weigh the following raw materials according to the weight ratio of raw materials for producing polystyrene extruded boards with a compressive strength greater than 700kPa:

[0060] General-purpose polystyrene (GPPS): 100Kg;

[0061] High impact polystyrene (HIPS): 6Kg;

[0062] Blowing agent: 5Kg of monochlorodifluoromethane (HCFC-22), 10Kg of liquid carbon dioxide;

[0063] Nucleating agent: talcum powder 0.8Kg;

[0064] Color masterbatch: blue masterbatch or red masterbatch 0.6Kg;

[0065] Flame retardant: hexabromocyclododecane 5Kg.

[0066] 2. General polystyrene (GPPS), high-impact polystyrene (HIPS), nucleating agent, color masterbatch and flame retardant are prepared according to the above-mentioned raw materials in parts by weight through the mixing and feeding device The solid components are mixed and added to the hopper of the No. 1 plastic extruder...

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Abstract

The invention relates to a method for producing a polystyrene extruded sheet with compressive strength larger than 700 kPa, in particular to a production formula and a process method for high-strength polystyrene extruded sheet (XPS) with compressive strength larger than 700 kPa. The method for producing the polystyrene extruded sheet with the compressive strength larger than 700 kPa of the invention is characterized by comprising the following steps: taking general purpose polystyrene (GPPS), high impact polystyrene (HIPS), a foaming agent, a nucleating agent, color master batches and a fire retardant in certain weight proportion as raw materials; utilizing a plastic extruding machine 1 to heat the raw materials so as to melt and mix polystyrene materials to form polymer melt; utilizing a plastic extruding machine 2 and a static mixer or a heat exchanger to carrying out mixing and cooling; enabling cooled gel to enter into a pressure lowered or decreased area through a die to form a foaming structure; leveling and typing by utilizing a bump-cutter machine; cooling by utilizing a cooling fan; and removing edges and carrying out fix-length cutting to prepare the high-strength polystyrene extruded sheet (XPS) with the compressive strength larger than 700 kPa.

Description

Technical field [0001] The production method of polystyrene extruded board with compressive strength greater than 700kPa of the present invention relates to a production formula and process method of high-strength polystyrene extruded board (XPS) with compressive strength greater than 700kPa. Background technique [0002] At present, the extruded board widely used in wall and roof insulation on the market has a compressive strength of less than 500kPa; while the extruded board used for ground construction of high-speed railways and airport runways needs a compressive strength greater than 700kPa. The high-strength extruded board with strength greater than 700kPa is still blank. Summary of the invention [0003] The purpose of the present invention is to provide a method for producing polystyrene extruded boards with a compressive strength greater than 700 kPa, which is a blank in the market for high-strength extruded boards with a compressive strength greater than 700 kPa. The tas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/20B29C44/60B29K25/00B29L7/00
Inventor 郭鑫齐杜小刚
Owner 南京法宁格节能科技股份有限公司
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