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A kind of flame-retardant bismaleimide resin and preparation method thereof

A technology of bismaleimide resin and maleimide resin, which is applied in the fields of flame-retardant bismaleimide resin and its preparation, flame-retardant polymer materials and its preparation, and can solve the problem of modified BMI resin It cannot meet the problems of flame retardancy, toughness molding process, poor compatibility of modified resin, narrow preparation process window, etc., to achieve the effect of excellent processability, wide source of raw materials, and high toughness

Inactive Publication Date: 2011-12-14
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hyperbranched polysilsesquioxane with a high degree of branching has a great steric hindrance effect. Therefore, when using its modified resin, it is necessary to carefully determine the preparation process conditions (that is, the preparation process window is narrow), otherwise it is easy to Obtain a modified resin with poor compatibility, obviously, this will not be conducive to industrial application
[0006] Based on the above existing technologies, it can be seen that the modified BMI resins currently provided cannot have excellent flame retardancy, toughness and excellent molding processability

Method used

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  • A kind of flame-retardant bismaleimide resin and preparation method thereof
  • A kind of flame-retardant bismaleimide resin and preparation method thereof
  • A kind of flame-retardant bismaleimide resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 1.98g of distilled water and 28.0g (0.1mol vinyl content) of vinyl-tris(2-methoxyethoxy)silane and mix evenly, then slowly add 1mL of 36.5% HCl dropwise at room temperature with stirring; After the dropwise addition, the temperature was raised to 50° C. to continue the reaction for 4 hours; after the reaction was completed, vacuum drying was carried out to obtain a transparent and viscous vinyl-containing hyperbranched polysiloxane.

[0033] Get all the above-mentioned vinyl-containing hyperbranched polysiloxanes (0.1mol vinyl content), 2.16g (0.01mol) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and After 120mL of propanol was mixed evenly, 0.4g of azobisisobutyrocyanide was added, heated to 95°C and continued to react for 5 hours, and the crude product was obtained by distillation under reduced pressure.

[0034] After the crude product is purified, filtered, distilled under reduced pressure and dried in vacuum, the hyperbranched polysiloxane containing pho...

Embodiment 2

[0041] Take 3.24g of distilled water and 28.0g (0.1mol vinyl content) of vinyl-tris(2-methoxyethoxy)silane and mix evenly, then slowly add 1mL of 36.5% HCl dropwise at room temperature with stirring; After the dropwise addition, the temperature was raised to 70° C. to continue the reaction for 4 hours; after the reaction was completed, vacuum drying was carried out to obtain a transparent and viscous vinyl-containing hyperbranched polysiloxane.

[0042] Get all the above-mentioned vinyl-containing hyperbranched polysiloxanes (0.1mol vinyl content), 18.44g (0.09mol) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and After mixing 120mL of ethanol evenly, add 0.6g of azobisisoheptanonitrile, heat to 100°C and continue the reaction for 10 hours, and distill under reduced pressure to obtain the crude product;

[0043] After the crude product is purified, filtered, distilled under reduced pressure and dried in vacuum, the hyperbranched polysiloxane containing phosphaphenanthrene...

Embodiment 3

[0046] Take 2.34g of distilled water and 28.0g (0.1mol vinyl content) of vinyl-tris(2-methoxyethoxy)silane and mix evenly, then slowly add 1mL of 36.5% HCl dropwise at room temperature with stirring; After the dropwise addition, the temperature was raised to 55° C. to continue the reaction for 5 hours; after the reaction was completed, vacuum drying was carried out to obtain a transparent and viscous vinyl-containing hyperbranched polysiloxane.

[0047] Take all the above vinyl-containing hyperbranched polysiloxane (0.1mol vinyl content), 8.44g 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and mix with 120mL propanol After uniformity, add 0.1 g of azobisisobutylcyanide, heat to 100°C and continue the reaction for 7 hours, and distill under reduced pressure to obtain the crude product;

[0048] After the crude product is purified, filtered, distilled under reduced pressure and dried in vacuum, the hyperbranched polysiloxane containing phosphaphenanthrene structure and viny...

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Abstract

The invention discloses a flame retardant bimaleimide resin and a preparation method thereof. 100 weight parts of bimaleimide resin, 0-200 weight parts of allyl compound and 1-100 weight parts of hyper branched polysiloxane containing a phosphaphenanthrene structure and vinyl are uniformly mixed at 90-200 DEG C to obtain a flame retardant bimaleimide resin. The resin has high fire resistance, high toughness, excellent heat resistance and manufacturability. In addition, the preparation technology has characteristics of wide raw material sources and easy operation, etc. The resin has promising application prospects to be used as a high performance resin matrix, an adhesive and an insulating varnish in hi-tech fields of aviation, spaceflight, electron, electric appliance and transportation, etc.

Description

technical field [0001] The invention relates to a flame-retardant polymer material and a preparation method thereof, in particular to a flame-retardant bismaleimide resin and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Bismaleimide (BMI) is a class of bifunctional compounds with active end groups of double bonds. It has outstanding high temperature resistance, radiation resistance, and good mechanical and electrical properties. It has been widely used in aerospace, Mechatronics, transportation and other fields. However, bismaleimide resin has the disadvantages of high brittleness and poor molding process, so it needs to be toughened and modified when it is used. There are mainly two existing toughening methods, one is to first add diamine to extend the chain, and then add epoxy resin, rubber, etc. to copolymerize with it; the other method is to copolymerize with diene compounds, which can greatly improve...

Claims

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Application Information

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IPC IPC(8): C08G73/12C08G77/395C08G77/20
Inventor 顾嫒娟张志勇梁国正袁莉卓东贤冒飞燕徐静
Owner SUZHOU UNIV
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