Flame-resisting MAA/AN copolymer foam plastic and preparation method of flame-resisting agent used by the same

A foamed plastic and copolymer technology, applied in the field of MAA/AN copolymer foamed plastics, can solve problems such as poor flame retardant performance

Active Publication Date: 2009-09-30
BAODING KAIBORUI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the deficiencies in the poor flame retardancy of existing MAA/AN copolymer foam plastics, the present invention pro

Method used

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  • Flame-resisting MAA/AN copolymer foam plastic and preparation method of flame-resisting agent used by the same
  • Flame-resisting MAA/AN copolymer foam plastic and preparation method of flame-resisting agent used by the same
  • Flame-resisting MAA/AN copolymer foam plastic and preparation method of flame-resisting agent used by the same

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preparation example Construction

[0044] The preparation method of above-mentioned flame-retardant MAA / AN copolymer foamed plastics comprises the steps:

[0045] Step 1, mixing the above formulations to form a uniform raw material solution;

[0046] Step 2, pour the raw material liquid into a mold made of two flat inorganic glasses and natural rubber or EPDM rubber or silicone rubber sealing ring, and the outside of the glass mold is tightened by a clamp;

[0047] Step 3: Put the glass mold filled with the raw material liquid into a strong circulating water bath device for polymerization to form a transparent foamable MAA / AN copolymer sheet. The polymerization conditions are: water temperature 40-60°C, time 24-72h.

[0048] Step 4. Freely foam the foamable MAA / AN copolymer sheet obtained in Step 3 in a strong circulating hot air at 180-200° C. (such as an oven, a drying tunnel, etc.) to form a foamed plastic.

[0049] Step 5: heat-treat the MAA / AN copolymer foam obtained in Step 4 in hot air (such as an oven)...

Embodiment 1

[0071] Embodiment 1 obtains density and is 60kg / m 3 The retarded flame MAA / AN copolymer foam plastics, embodiment 2 obtains density and is 60kg / m 3 Flame-retardant MAA / AN copolymer foamed plastics, embodiment 3 obtains density and is 80kg / m 3 The flame-retardant foamed plastics, embodiment 4 obtains density and is 110kg / m 3 flame retardant foam plastic. The density obtained in the control example is 60, 80kg / m 3 Non-flame retardant MAA / AN copolymer foam.

[0072] The combustion properties of the structural flame-retardant MAA / AN foamed plastics obtained in Examples 1-4 are shown in Table 2, compared with Document 1.

[0073] Table 2 Combustion properties of structural flame-retardant MAA / AN copolymer foams

[0074]

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Abstract

The preparation formula of flame-resisting MAA/AN copolymer foam plastic consists of a monomer 1 (methacrylic acid MAA), a monomer 2 (acrylonitrile AN), an initiator, a cross-linker, a foaming agent, a nucleating agent, a molecular weight regulator and a flame-resisting agent (3-chloro-2-hydroxypropyl dimethyl phosphate or ammonium (3-chloro-2-hydroxyl) propyl phosphate). The preparation procedure is as follows: polymerizing the formula mixed solution into a foamable copolymer plate in a closed die, foaming and post-processing the foamable copolymer plate into a structurally flame-resisting MAA/AN copolymer foam plastic at a high temperature. The flame-resisting agent 3-chloro-2-hydroxypropyl dimethyl phosphate is synthesized by dimethyl phosphate, epoxy chloropropane and sodium alcoholate, and the other flame-resisting agent ammonium (3-chloro-2-hydroxyl) propyl phosphate is synthesized by phosphoric acid, epoxy chloropropane and carbomite or ammonium carbonate or ammonium bicarbonate, respectively. The invention achieves the structural flame resistance of MAA/AN copolymer foam plastic.

Description

technical field [0001] The invention relates to a MAA / AN copolymer foam plastic, in particular to a flame-retardant MAA / AN copolymer foam plastic; it also relates to a preparation method of a flame retardant used in the flame-retardant MAA / AN copolymer foam plastic. Background technique [0002] Document 1 "Chinese Patent No. ZL200610091394.1" discloses a MAA / AN copolymer foam and its preparation method. The formula components of the MAA / AN copolymer foam are polymerized and foamed according to the following weight ratios Made: Monomer 1: Methacrylic acid 42-62 [0003] Monomer 2: Acrylonitrile 58~38 [0004] Initiator: azobisisobutyronitrile 0.18~0.40 [0005] Crosslinking agent: acrylamide or methacrylamide 1.3~3.5 [0006] Foaming agent: formamide or propylene glycol or pentanol or hexanol 2.0~8.0 [0007] Nucleating agent: urea 0.3~1.3. [0008] Document 2 "Reinforcement and Flame Retardancy of AN / MAA Copolymer Foam Plastics Master's Thesis of No...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/44C08F2/44C08K5/521
Inventor 张广成陈挺董善来马瑞
Owner BAODING KAIBORUI MACHINERY MFG
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