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A kind of preparation method of additive flame retardant for resin matrix composite material

A composite material and additive technology, applied in the field of composite materials, can solve the problems of reducing the physical and mechanical properties of products, unsuitable for composite material processing, complex process, etc., achieve excellent flame retardant effect, improve blending compatibility, reduce oxygen The effect of the index

Active Publication Date: 2020-12-22
HUIZHOU AIMSEA NEWWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method is more complicated and the cost is higher; the second method is not widely used at present, and it is easy to produce polluting wastewater; the third method is widely used because of its simple process, low cost and good flame retardant effect. However, a large amount of addition will greatly reduce the physical and mechanical properties of the product, so it is not suitable for the processing of composite materials

Method used

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  • A kind of preparation method of additive flame retardant for resin matrix composite material

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Experimental program
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Effect test

Embodiment 1

[0030] (1) Pretreatment of sepiolite fibers: disperse 50g of sepiolite fibers in water, heat to 55°C and keep stirring for 0.5h, then add 3g of hydrolyzed polymaleic anhydride, continue to keep stirring at 55°C for 2h, filter, After the filter residue is washed with water, it is sent to a freeze dryer, and the solid obtained after drying is made into a coarse powder by a pulverizer;

[0031] (2) Modification of sepiolite fiber: 50g of sepiolite fiber after pretreatment is dispersed in 95% ethanol, and 10g of zinc dimethacrylate, 0.5g of initiator azobisisobutyronitrile and 0.5g of chain transfer agent dodecyl mercaptan, heated to reflux state and kept stirring, concentrated under reduced pressure to reclaim ethanol after the reaction, the concentrated residue was washed with water, dried by a freeze dryer, and then made into a coarse powder by a pulverizer, which can be modified Sexual sepiolite fiber;

[0032] (3) Loading of flame retardant components: Disperse 50g of modifi...

Embodiment 2

[0035] (1) Pretreatment of sepiolite fibers: Disperse 50g of sepiolite fibers in water, heat to 55°C and stir for 0.5h, then add 4g of hydrolyzed polymaleic anhydride, continue to stir at 55°C for 2h, filter, After the filter residue is washed with water, it is sent to a freeze dryer, and the solid obtained after drying is made into a coarse powder by a pulverizer;

[0036] (2) Modification of sepiolite fiber: disperse 50g of pretreated sepiolite fiber in 95% ethanol, and add 12.5g of zinc dimethacrylate, 0.5g of initiator azobisisobutyronitrile and 0.5g chain transfer agent dodecyl mercaptan, then heated to reflux state and kept stirring, concentrated under reduced pressure to reclaim ethanol after the reaction, the concentrated residue was washed with water, dried by a lyophilizer and made into a coarse powder by a pulverizer, to obtain Modified sepiolite fiber;

[0037] (3) Loading of flame retardant components: Disperse 50g of modified sepiolite fibers in 70% ethanol, the...

Embodiment 3

[0040] (1) Pretreatment of sepiolite fibers: Disperse 50g of sepiolite fibers in water, heat to 55°C and stir for 0.5h, then add 4g of hydrolyzed polymaleic anhydride, continue to stir at 55°C for 2h, filter, After the filter residue is washed with water, it is sent to a freeze dryer, and the solid obtained after drying is made into a coarse powder by a pulverizer;

[0041] (2) Modification of sepiolite fiber: disperse 50g of pretreated sepiolite fiber in 95% ethanol, and add 12.5g of zinc dimethacrylate, 0.5g of initiator azobisisobutyronitrile and 0.5g chain transfer agent dodecyl mercaptan, then heated to reflux state and kept stirring, concentrated under reduced pressure to reclaim ethanol after the reaction, the concentrated residue was washed with water, dried by a lyophilizer and made into a coarse powder by a pulverizer, to obtain Modified sepiolite fiber;

[0042] (3) Loading of flame-retardant components: Disperse 50g of modified sepiolite fibers in 70% ethanol, then ...

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Abstract

The invention discloses a preparation method of an additive type flame retardant for a resin-based composite material, and relates to the technical field of composite materials. The method comprises the following steps: (1) pretreatment of sepiolite fibers, (2) modification treatment of the sepiolite fibers, (3) loading of a flame retardant component, and (4) preparation of the additive type flameretardant. Nanometer titanium dioxide is used as the flame retardant component, modified sepiolite fibers are used as a carrier, the nanometer titanium dioxide is firmly adhered to the sepiolite fibers through loading, and the integration of the flame retardation performances of the nanometer titanium dioxide and the modified sepiolite fibers is used to improve the use performances of the additive type flame retardant; and the additive type flame retardant can exert an excellent flame retardation effect when the addition amount is as low as 5%, so the oxygen index is remarkably reduced, and the physical and mechanical properties of the produced resin-based composite material are ensured.

Description

Technical field: [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of an additive flame retardant for resin-based composite materials. Background technique: [0002] Resin-based composites are generally composed of a reinforcement phase and a matrix phase. The commonly used reinforcement phases are inorganic fibers, such as glass fibers and carbon fibers, which are flame retardant or non-combustible; the matrix phase is organic polymer resins, such as epoxy resins and unsaturated polyesters. Resins, etc., are flammable. In order to meet the flame retardant performance requirements of resin matrix composites, it is necessary to carry out flame retardant treatment on the resin matrix. [0003] At present, there are three main methods for the flame retardant treatment of the resin matrix: (1) Reactive flame retardant, that is, to make the raw materials participating in the reaction bring flame retardant elements, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L23/30C08K9/04C08K7/10C08K3/22C08K3/34C08F120/06C08F2/44C08F2/38
CPCC08F2/38C08F2/44C08F120/06C08K2003/2241C08K2201/011C08L63/00C08L2201/02C08L23/30C08K9/08C08K7/10C08K3/22C08K3/34
Inventor 汪涛
Owner HUIZHOU AIMSEA NEWWAY TECH CO LTD