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Feed device for production of flame-resistant XPS plastic extruding foam boards

A technology of feeding device and foam board, which is applied in the field of feeding device, can solve the problems of lack of flexibility, change of flame retardant performance, inconvenience, etc., and achieve the effect of simple and flexible production process, stable flame retardant performance and safe production

Inactive Publication Date: 2016-03-02
赵祖良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3. Since the PS pellets and the flame retardant are mixed quantitatively, it is inconvenient to increase or decrease the flame retardant to adjust the foam molding process or change the flame retardant performance during production. It is necessary to wait until the material in the barrel is used up. Then feed the material after adding or subtracting the flame retardant into the barrel
lack of flexibility in process

Method used

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  • Feed device for production of flame-resistant XPS plastic extruding foam boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1 part of red phosphorus, 2 parts of expandable graphite, 4 parts of PS powder, 0.02 part of antioxidant, and 0.03 part of TCPP are used to form a flame retardant premix. When the flame retardant premix and PS pellets are 3:7. The flame retardant XPS extruded foam board produced has a red phosphorus content of 4.28% and a graphite content of 8.57%. After injecting 2% of the total mass of TCPP on the secondary screw, the flame retardancy of the flame retardant XPS extruded foam board Can reach level B1.

Embodiment 2

[0033] 1 part of red phosphorus, 2 parts of expandable graphite, 4 parts of PS powder, 0.02 part of antioxidant, and 0.03 part of TCPP are used to form a flame retardant premix. When the flame retardant premix and PS pellets are 3.5:6.5. The flame retardant XPS extruded foam board produced contains 5% red phosphorus and 10% graphite, and the flame retardancy of the flame retardant XPS extruded foam board after injecting 1% of the total mass of TCPP on the secondary screw Can reach level B1.

Embodiment 3

[0035] 1 part of red phosphorus, 2 parts of expandable graphite, 4 parts of PS powder, 0.02 part of antioxidant, and 0.03 part of TCPP are used to form a flame retardant premix. When the flame retardant premix and PS pellets are 4:6. The flame retardant XPS extruded foam board produced contains 5.71% red phosphorus and 11.43% graphite. There is no need to inject TCPP into the secondary screw, and the flame retardancy of the flame retardant XPS extruded foam board can reach B1 level.

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Abstract

The invention relates to a feed device for production of flame-resistant XPS plastic extruding foam boards. The feed device is characterized by comprising a screw extruder (1), a feed hopper (2), a first hopper (3), a second hopper (4) and a frequency conversion feeder (5), wherein the feed hopper (2) is arranged at a feed opening of the screw extruder (1); a discharge opening in the bottom of the first hopper (3) is positioned in the left half part above the feed hopper (2); a discharge opening in the bottom of the second hopper (4) is connected with a feed opening in the frequency conversion feeder (5), and a discharge pipeline opening of the frequency conversion feeder (5) is positioned in the right half part above the feed hopper; and PS granules (6) are placed in the first hopper (3), and a fire-retardant premix (7) is placed in the second hopper (4). The feed device disclosed by the invention has the advantages of simple and flexible production technology, safe production and low cost and being capable of producing products with good flame resistance.

Description

technical field [0001] The invention relates to a feeding device for a flame-retardant XPS extruded foam board. Background technique [0002] XPS extruded foam board (extruded polystyrene foam board) has a closed-cell foam structure, so the thermal conductivity is small and has excellent thermal insulation performance. It is the first choice for various thermal insulation structures, but XPS extruded foam board is easy to Inflammable, the fire will ignite, so it is necessary to add a flame retardant to make it flame retardant. Expandable graphite, coated red phosphorus and other compound flame retardant XPS extrusion foaming can make the foam material reach the flame retardant B1 level, which can replace the toxic hexabromocyclododecane flame retardant. [0003] There are two traditional production methods of adding flame retardants: [0004] The first production method is to make TCPP and expandable graphite or add red phosphorus into a paste, and use a special pump to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/10C08L25/06C08K13/06C08K3/04C08K5/521C08K3/02
CPCB29C48/288B29C48/297C08L25/06C08L2201/02C08L2205/025C08K13/06C08K3/04C08K5/521C08K2003/026
Inventor 赵祖良赵赶超
Owner 赵祖良
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