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Continuous fiber reinforce polyamide composite material prepreg tape and preparation method thereof

A technology of continuous fibers and composite materials, applied in the field of polymer composite materials, can solve the problems of unfavorable fiber infiltration, increased fiber content, limited high temperature fluidity, etc.

Inactive Publication Date: 2013-06-05
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN101474868A relates to the preparation of polyamide prepregs including PA6, PA66, etc., but due to the use of traditional linear polyamide, its high-temperature fluidity is limited, which is not conducive to the infiltration of fibers in composite materials and the further improvement of fiber content

Method used

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  • Continuous fiber reinforce polyamide composite material prepreg tape and preparation method thereof
  • Continuous fiber reinforce polyamide composite material prepreg tape and preparation method thereof
  • Continuous fiber reinforce polyamide composite material prepreg tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The prepreg tape based on continuous fiber reinforced polyamide composite material is made from components comprising the following parts by weight:

[0047] Continuous glass fiber (PPG company, 45882400tex continuous glass fiber) 50.8 parts,

[0048] 49.2 parts of star-shaped polyamide matrix;

[0049] Among them, the star-shaped polyamide matrix is ​​prepared according to the method described in French patent FR2743077, 100 parts of caprolactam (monomer II), 0.025 parts of 2,2,6,6-tetra-(β-carboxyethyl)- Cyclohexanone (multifunctional compound I) and 0.036 parts of distilled water are added into a high-pressure reactor for copolymerization. According to the standard IS01133, the melt flow index measured at 275°C under a load of 325 grams is 28g / 10min.

[0050] (1) The star-shaped polyamide matrix is ​​plasticized and melted by an extruder to obtain a star-shaped polyamide matrix melt, which is smoothly extruded through a double-extrusion die head for use;

[0051] (2...

Embodiment 2

[0056] The prepreg tape based on continuous fiber reinforced polyamide composite material is made from components comprising the following parts by weight:

[0057] Continuous carbon fiber (Toray Fiber Research Institute, T700 24K continuous carbon fiber) 53.2 parts,

[0058] 46.8 parts of star polyamide matrix;

[0059] Among them, the star-shaped polyamide matrix is ​​according to the method described in French patent FR2743077, 100 parts of caprolactam (monomer II), 0.031 parts of 2,2,6,6-tetra-(β-carboxyethyl)-cyclohexyl Ketone (polyfunctional compound I) and 0.036 parts of distilled water are added into a high-pressure reactor for copolymerization. According to the standard ISO1133, the melt flow index measured at 275° C. under a load of 325 grams is 47 g / 10 min.

[0060] (1) The star-shaped polyamide matrix is ​​plasticized and melted by an extruder to obtain a star-shaped polyamide matrix melt, which is smoothly extruded through a double-extrusion die head for use;

...

Embodiment 3

[0064] The prepreg tape based on continuous fiber reinforced polyamide composite material is made from components comprising the following parts by weight:

[0065] Continuous glass fiber (PPG company, 4588 2400tex continuous glass fiber) 70 parts,

[0066] Star-shaped polyamide matrix 26 parts,

[0067] 3.5 parts of magnesium hydroxide,

[0068] Antioxidant 1098 0.25 parts,

[0069] Antioxidant 168, 0.25 part;

[0070] The preparation method, components and content of the star-shaped polyamide matrix are the same as those in Example 1.

[0071] Such as figure 1 As shown, (1) the star-shaped polyamide matrix and additives are plasticized and melt-blended by an extruder to obtain a star-shaped polyamide matrix melt, and are extruded smoothly through a double extrusion die head for use;

[0072] (2) Install the continuous glass fiber roll 11 on the spindle 13 of the creel 10 to draw the continuous fiber bundles 12 arranged in parallel, carefully draw the continuous glass fi...

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Abstract

The invention discloses a continuous fiber reinforce polyamide composite material prepreg tape. The continuous fiber reinforce polyamide composite material prepreg tape is prepared by the following weight part components: 26-72 parts star-shaped polyamide matrix, 20-70 parts continuous fiber and 0-8 parts additive. The invention further discloses a preparation method of the continuous fiber reinforce polyamide composite material prepreg tape. Polyamide provided with a star-shaped structure is chosen by matrix resin of the prepreg tape, the liquidity of fondant is higher than the liquidity of traditional linear polyamide, dipping can be conducted easily to the continuous fiber, and dipping equipment with double intersect extrusion die heads is adopted to conduct the dipping to the continuous fiber. By means of special technology design, the continuous fiber reinforce polyamide composite material prepreg tape which is even in fiber distribution and is dipped completely is obtained, the resin content in the prepreg tape is easy to control, the fiber in the prepared continuous fiber reinforce polyamide composite material prepreg tape is guaranteed to be dipped completely, and the porosity rate is maintained not higher than 0.1%.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a continuous fiber reinforced polyamide composite material prepreg tape and a preparation method thereof. Background technique [0002] Continuous fiber reinforced polyamide composite prepreg tape has excellent mechanical properties such as high tensile strength, flexural strength / modulus, high and low temperature impact strength, etc., and has the characteristics of relatively low density and recyclability, so in recent years It has been greatly developed, and the corresponding preparation technology has also obtained a major breakthrough. At present, this material is prepared by melt impregnation, which requires the resin to have a low viscosity in the molten state and the fiber to have good wettability. Therefore, the better the fluidity of the resin in the molten state, the better it is to obtain products with good wetting properties and high reinforcemen...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08L23/06C08L77/00C08K7/14C08K7/06C08K3/04C08K7/04C08J5/04
CPCC08J5/24C08J5/244C08J5/246C08J5/243C08J5/242
Inventor 李敏立解廷秀严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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