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Reactive flame retardant, vinyl smc resin containing the flame retardant

A reactive flame retardant and flame retardant technology, which is applied in the fields of compounds of Group 5/15 elements of the periodic table, organic chemistry, chemical instruments and methods to improve flame retardant properties, ensure mechanical properties and flame retardant properties. , the effect of reducing product cost

Active Publication Date: 2022-03-22
南京聚发新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with unsaturated polyester, the performance of vinyl resin is significantly improved, but since the molecular chain of vinyl resin does not contain any carboxylic acid groups, this method cannot be used directly for the manufacture of molded composite materials

Method used

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  • Reactive flame retardant, vinyl smc resin containing the flame retardant
  • Reactive flame retardant, vinyl smc resin containing the flame retardant
  • Reactive flame retardant, vinyl smc resin containing the flame retardant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 10mol monomethyl phosphate (R is -CH 3 ) and 20mol butyl glycidyl ether into the ceramic kettle, stirred at ambient temperature for 0.5h, continued to add 20mol maleic anhydride, raised the temperature to 90°C, stirred for 5h,

[0044] A polycarboxylate flame retardant containing phosphorus and double bonds (R 1 for ) The molecular weight of the flame retardant is 536g / mol, and the phosphorus content is 5.78%.

[0045] The formula of flame retardant vinyl SMC resin is as follows:

[0046] Epoxy vinyl resin (Shanghai Huachang Company, MFE-711) 100 parts by weight

[0047] 20 parts by weight of polycarboxy compound

[0048] 1.5 parts by weight of tert-butyl peroxybenzoate

[0049] Magnesium oxide 3 parts by weight

[0050] After the resin preparation is completed, the viscosity of the resin is continuously tested. When the viscosity of the resin remains unchanged, the resin is cured in a high-temperature oven at 130°C, and the mechanical and flame-retardant propert...

Embodiment 2

[0052] 10mol monobutyl phosphate (R is -C 4 h 9 ) and 20mol epichlorohydrin into the ceramic kettle, stirred at ambient temperature for 0.5h, continued to add 20mol maleic anhydride, raised the temperature to 140°C, stirred for 0.5h,

[0053] A polycarboxylate flame retardant containing phosphorus and double bonds (R 1 for ) The molecular weight of the flame retardant is 530g / mol, and the phosphorus content is 5.85%.

[0054] The formula of flame retardant vinyl SMC resin is as follows:

[0055] Polyurethane vinyl resin (Nantong Matech Co., Ureplu-1119): 100 parts by weight

[0056] 80 parts by weight of polycarboxy compound

[0057] 3 parts by weight of dicumyl peroxide

[0058] Calcium hydroxide 1.5 parts by weight

[0059] After the resin preparation is completed, the viscosity of the resin is continuously tested. When the viscosity of the resin remains unchanged, the resin is cured in a high-temperature oven at 130°C, and the mechanical and flame-retardant properti...

Embodiment 3

[0061] 10mol monooctadecyl phosphate (R is -C 18 h 37 ) and 20mol of propenyl glycidyl ether were added to the ceramic kettle, stirred at ambient temperature for 0.5h, continued to add 20mol of maleic anhydride, heated to 120°C, and stirred for 2.5h to obtain a flame-retardant polycarboxy compound containing phosphorus and double bonds agent (R 1 for ) The molecular weight of the flame retardant is 742g / mol, and the phosphorus content is 4.17%.

[0062] The formula of flame retardant vinyl SMC resin is as follows:

[0063] Polyurethane vinyl resin (Nantong Matech Co., Ureplu-1119) 100 parts by weight

[0064] 50 parts by weight of polycarboxy compound

[0065] 2 parts by weight of di-tert-butyl peroxide

[0066] 2.5 parts by weight of magnesium hydroxide

[0067] After the resin preparation is completed, the viscosity of the resin is continuously tested. When the viscosity of the resin remains unchanged, the resin is cured in a high-temperature oven at 130°C, and the m...

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Abstract

The invention discloses a reactive flame retardant and a vinyl SMC resin containing the flame retardant, belonging to the fields of polymer synthesis and resin preparation. The method comprises the following steps: preparation of polycarboxylate compounds containing phosphorus and double bonds; preparation of flame-retardant vinyl SMC resin. The present invention prepares a polycarboxylate compound containing phosphorus and double bonds, and adds it to the vinyl resin. On the one hand, it can improve the flame retardancy of the resin cured product. The base resin is fully compatible with conventional thickening techniques, solving the vinyl thickening problem plaguing the industry. The flame retardant can be connected to the polymer crosslinked network after the resin is cured through chemical bonds, and the amount that can be added is significantly higher than that of traditional additive flame retardants, which is conducive to ensuring the flame retardancy and mechanical properties of the resin cured product at the same time.

Description

technical field [0001] The invention belongs to the field of polymer synthesis and resin preparation, in particular to a reactive flame retardant and vinyl SMC resin containing the flame retardant. Background technique [0002] SMC is a high-efficiency mechanized manufacturing process for composite materials, which is generally prepared by unsaturated polyester resins terminated with carboxylic acid groups. The principle is that under the action of a thickener such as magnesium oxide, the mixture of resin, fiber and filler can be viscosified at an appropriate speed through the non-covalent bond between the carboxylic acid group and magnesium oxide. It is a plastic state with a certain strength, and then it is solidified in the mold by high temperature and high pressure of the molding machine. Compared with unsaturated polyester, the performance of vinyl resin is significantly improved, but since the molecular chain of vinyl resin does not contain any carboxylic acid groups,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F230/02C08F283/10C08F283/00C08F2/44C08K3/22C07F9/09
CPCC08F230/02C08F283/105C08F283/008C08F2/44C08K3/22C07F9/091C08K2003/222C08K2003/2206C08K2003/2224
Inventor 鞠明杰成源邓军发
Owner 南京聚发新材料有限公司
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