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Surface modification glass fiber and preparation method and application thereof

A glass fiber and surface modification technology, applied in the field of surface modified fiber and its preparation, can solve problems such as difficulty in industrialization, and achieve the effects of increasing interface bonding, increasing deformability, and improving modulus and toughness.

Inactive Publication Date: 2013-07-03
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthetic method ATRP of this block copolymer strictly requires an anhydrous and oxygen-free reaction environment, so this method is difficult to realize industrialization

Method used

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  • Surface modification glass fiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of the copolymer: Weigh 12.7g lauryl methacrylate, 5.2g styrene, 4.9g maleic anhydride, 0.1368g benzoyl peroxide, measure 25mL toluene, add them into a three-necked flask, stir fully, Nitrogen was blown, the temperature was raised to 60°C, and the reaction was carried out for 6h. After the reaction, remove the toluene by rotary evaporation, precipitate with petroleum ether, filter with suction, put the product in a vacuum drying oven, and dry for 8 hours to obtain the copolymer;

[0025] Pretreatment of glass fiber: take 50mL of 1% ethanol aqueous solution, measure 1mL of KH550, mix well in a beaker, let it stand for 20 minutes, add 6g of glass fiber, soak for 0.2h, take out the glass fiber, dry it in a fume hood, 70 Dry at ℃ for later use; surface modification of glass fiber: take the copolymer, add tetrahydrofuran to prepare a solution with a weight ratio of 1% tetrahydrofuran, add pretreated glass fiber, soak for 1.5h, take out the glass fiber, and dry it...

Embodiment 2

[0027]Preparation of copolymer: Weigh 25.4g lauryl methacrylate, 10.4g styrene, 4.9g maleic anhydride, 0.3256g azobisisobutyronitrile, measure 35mL toluene, add them into a three-necked flask, and stir thoroughly , Nitrogen, heated to 70 ° C, the reaction 7h. After the reaction, the toluene was removed by rotary evaporation, precipitated with petroleum ether, filtered with suction, the product was put into a vacuum drying oven, and dried for 8 hours to obtain a copolymer.

[0028] Glass fiber pretreatment: Measure 100mL of 1% ethanol aqueous solution, measure 1mL of KH550, mix well in a beaker, let stand for 12 minutes, add 24g of glass fiber, soak for 1h, take out the glass fiber, dry it in a fume hood, 80 ℃ dry for later use

[0029] Surface modification of glass fiber: take copolymer, add tetrahydrofuran, prepare a solution with a weight ratio of 2% tetrahydrofuran, add pretreated glass fiber, add pretreated glass fiber, soak for 1.5h, take out the glass fiber, and put it ...

Embodiment 3

[0031] Preparation of copolymer: Weigh 38.1g lauryl methacrylate, 10.4g styrene, 4.9g maleic anhydride, 0.534g benzoyl peroxide, measure 45mL benzene, add to a three-necked flask, stir fully, Nitrogen was blown, the temperature was raised to 80°C, and the reaction was carried out for 8h. After the reaction, remove benzene by rotary evaporation, precipitate with petroleum ether, filter with suction, put the product in a vacuum drying oven, and dry for 8 hours to obtain a copolymer.

[0032] Glass fiber pretreatment: Measure 70mL of 1% ethanol aqueous solution, measure 1mL of KH550, mix well in a beaker, let it stand for 10 minutes, add 10g of chopped glass fiber, soak for 2h, take out the glass fiber, and dry it in a fume hood , dried at 85°C for later use.

[0033] Surface modification of glass fiber: take copolymer, add tetrahydrofuran, prepare a THF solution with a weight ratio of 3%, add pretreated glass fiber, soak for 2 hours, take out the glass fiber, dry it in a fume h...

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Abstract

The invention relates to a surface modification glass fiber and a preparation method and an application thereof, and belongs to the fields of surface modification fibers and preparation thereof. The preparation method is characterized in that the copolymer solution is adopted to be coated on the surface of the pre-processed glass fiber, wherein the copolymer used in the method comprises dodecyl methacrylate, styrene, and maleic anhydride; and the glass fiber is pre-processed by a coupling agent KH550. The surface modification glass fiber, provided by the invention, has the advantages that the preparation process is simple; the cost is low; the industrialization is facilitated; the dispersing performance and the heat stability of the modification glass fiber are good after the preparation method; and the surface modification glass fiber can be well bonded with thermoplastic resin.

Description

technical field [0001] The invention belongs to the field of surface modified fiber and its preparation, in particular to a surface modified glass fiber, its preparation method and its application. Background technique [0002] In fiber-reinforced resin matrix composites, the bonding degree of the fiber-matrix interface is an important indicator of the interface strength. Therefore, improving the interfacial adhesion performance is one of the key factors in the interface control technology of composite materials. The formation of the fiber-matrix interface layer usually undergoes the contact and wetting process between the fiber and the matrix. Due to the different adsorption capabilities of fibers to matrix molecules and various groups or to various components in the system, in the process of interface formation, wetting or non-wetting depends on the attraction between fibers and matrix or other components. To produce a wetting phenomenon, the fiber always has to adsorb t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/06C08K7/14C08F220/18C08F212/08C08F222/08C03C25/28C08J5/08C08L23/06C08L23/12
Inventor 王景昌刘春明王文焕董旭
Owner DALIAN UNIV
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