Method for producing polystyrene extruded sheet profiled bar through carbon dioxide foaming agent

A polystyrene and carbon dioxide technology, which is applied in the field of producing polystyrene extruded board profiles by using carbon dioxide foaming agent, can solve the problems of unfavorable line board installation, rough surface, high price, etc., and is beneficial to process control and improvement. The effect of apparent performance, improving mixing ability

Inactive Publication Date: 2015-12-30
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, the materials of lined boards widely used in house decoration include wood, gypsum, stainless steel, plastic, etc. Among them, the lined boards made of wood, gypsum and stainless steel have higher density than plastic materials, which is not conducive to the production of lined boards. Installation, wooden and gypsum boards are easy to absorb water and deform, and their prices are more expensive and other unfavorable factors
Plastic products are mainly expandable polystyrene (EPS) decorative materials, which are light in weight, recyclable, economical and environmentally friendly, but compared with extruded polystyrene board (XPS), this material has a rough surface and less production A series of shortcomings such as low efficiency, high thermal conductivity, weak pressure resistance, and need for post-processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 100Kg of polystyrene particles, 2.5Kg of processing aid talcum powder, 1.5Kg of cyclohexabromododecane, and 0.5Kg of blue mother are respectively added to the extruder through the vacuum suction system and the powder feeding system, Set the temperature of the extruder system at 200°C to 240°C to fully melt and mix the polystyrene particles and processing aids to form a polystyrene melt;

[0025] (2) Get 1.5Kg of carbon dioxide and inject it in the extruder, and the injection pressure is 16~20MPa to form a foamable gel;

[0026] (3) The above-mentioned gel and the polystyrene melt are fully mixed under the twin-screw shearing action in the extruder, and the material is gradually cooled in the process of forward conveying;

[0027] (4) Send the mixture of step (3) into a heat exchanger, set the system pressure to 10-15MPa, mix and cool down through the heat exchanger, so that the temperature of the mixture drops to 110°C, forming a polymer gel;

[0028] (5) The relea...

Embodiment 2

[0031] (1) 100Kg of polystyrene granules, 4Kg of processing aid talcum powder, 2.5Kg of cyclohexabromododecane, and 1.5Kg of red masterbatch are respectively added to the extruder through the vacuum suction system and the powder feeding system at the same time, set The temperature of the extruder system is 200°C to 240°C, so that the polystyrene particles and processing aids are fully melted and mixed to form a polystyrene melt;

[0032] (2) Get 1.5Kg of carbon dioxide and inject it in the extruder, and the injection pressure is 16~20MPa to form a foamable gel;

[0033] (3) The above-mentioned gel and the polystyrene melt are fully mixed under the twin-screw shearing action in the extruder, and the material is gradually cooled in the process of forward conveying;

[0034] (4) Send the mixture of step (3) into a heat exchanger, set the system pressure to 10-15MPa, mix and cool down through the heat exchanger, so that the temperature of the mixture drops to 110°C, forming a poly...

Embodiment 3

[0038] (1) 100Kg of polystyrene particles, 2.5Kg of processing aid talcum powder, 1.5Kg of cyclohexabromododecane, and 0.5Kg of blue mother are respectively added to the extruder through the vacuum suction system and the powder feeding system, Set the temperature of the extruder system at 200°C to 240°C to fully melt and mix the polystyrene particles and processing aids to form a polystyrene melt;

[0039] (2) Get 2.5Kg of carbon dioxide and inject in the extruder, the injection pressure is 16~20MPa, forms the gel that can foam;

[0040] (3) The above-mentioned gel and the polystyrene melt are fully mixed under the twin-screw shearing action in the extruder, and the material is gradually cooled in the process of forward conveying;

[0041] (4) Send the mixture of step (3) into a heat exchanger, set the system pressure to 10-15MPa, mix and cool down through the heat exchanger, so that the temperature of the mixture drops to 110°C, forming a polymer gel;

[0042] (5) The releas...

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Abstract

The invention discloses a method for producing a polystyrene extruded sheet profiled bar through a carbon dioxide foaming agent. The method includes the following steps: taking a polystyrene melt as the main component, and taking carbon dioxide as a polymer melt of the foaming agent, and simultaneously adding the two objects into an extruder according to a certain proportion to form a polymer melt; injecting carbon dioxide from the middle section of the extruder to the melt through a foaming agent injection system to form foamable gelatin; along with the forward conveying of the melt, and under the shearing action of a screw, fully mixing the foaming agent with the polystyrene melt; performing mixing and temperature reduction and cooling to the polymer melt through a heat exchanger, so as to reduce the temperature of the gelatin to the optimal foaming temperature; extruding the cooled gelatin through a die with required shapes to form the polystyrene extruded sheet profiled bar. The method for producing the polystyrene extruded sheet profiled bar through the carbon dioxide foaming agent, provided by the invention, is economic and environment-friendly, is simple in technology, and has excellent market prospect.

Description

technical field [0001] The invention relates to a production formula and a process method of polystyrene extruded board profiles, in particular to a method for producing polystyrene extruded board profiles by using a carbon dioxide foaming agent. Background technique [0002] At present, the materials of lined boards widely used in house decoration include wood, gypsum, stainless steel, plastic, etc. Among them, the lined boards made of wood, gypsum and stainless steel have higher density than plastic materials, which is not conducive to the production of lined boards. Installation, wood and gypsum boards are easy to absorb water and deform, and their prices are more expensive and other unfavorable factors. Plastic products are mainly expandable polystyrene (EPS) decorative materials, which are light in weight, recyclable, economical and environmentally friendly, but compared with extruded polystyrene board (XPS), this material has a rough surface and less production It has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K3/34C08K5/02C08J9/12B29C47/00B29C47/60
Inventor 郭鑫齐许鹏王翔张晶袁鹤翔
Owner 南京法宁格节能科技股份有限公司
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