A kind of preparation method of glass fiber reinforced polyamide composite material loaded with nucleating agent

A glass fiber and composite material technology, which is applied in the field of glass fiber reinforced polyamide composite materials, can solve the problems of insignificant effect and destroy polymer crystallization, and achieve the effect of simple and easy preparation method.

Active Publication Date: 2017-06-30
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of glass fiber added in glass fiber reinforced polymer matrix composites will destroy the crystallization of the polymer to a certain extent, and the direct addition of nucleating agents in glass fiber reinforced polymer composites often has no obvious effect

Method used

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  • A kind of preparation method of glass fiber reinforced polyamide composite material loaded with nucleating agent
  • A kind of preparation method of glass fiber reinforced polyamide composite material loaded with nucleating agent
  • A kind of preparation method of glass fiber reinforced polyamide composite material loaded with nucleating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation concentration is the 1.24L clay suspension of 2g / L, after stirring evenly, add the circular glass fiber that concentration is 200g / L, utilize the electrostatic adsorption between glass fiber and clay, obtain the glass fiber reinforcement that surface is adsorbed with clay. body; the above-mentioned glass fiber reinforced body and polyamide 66 are compounded by extrusion molding process to obtain a clay-loaded glass fiber reinforced polyamide composite material, which contains 10% glass fiber reinforced body.

[0028] figure 1 It is the scanning electron micrograph of the glass fiber reinforced body prepared when the concentration of 1.24L clay suspension is 2g / L; figure 2 The scanning electron micrograph of the interlaminar shear section of the glass fiber reinforced polyamide 66 composite material prepared when the concentration of 1.24L clay suspension is 2g / L.

Embodiment 2

[0030] Prepare BRUGGOLEN P22 organic nucleating agent suspension with a concentration of 2g / L, stir evenly, add round glass fibers with a concentration of 200g / L, and use the electrostatic adsorption between the round glass fibers and the organic nucleating agent to obtain a surface A glass fiber reinforced body that absorbs an organic nucleating agent; compound the above glass fiber reinforced body and polyamide 66 through an extrusion molding process to obtain a glass fiber reinforced polyamide composite material loaded with an organic nucleating agent, and the composite material contains 10% Glass fiber reinforcement.

[0031] image 3 The scanning electron micrograph of the circular short glass fiber reinforcement loaded with organic nucleating agent prepared when the concentration of BRUGGOLEN P22 organic nucleating agent suspension is 2g / L.

[0032] Figure 4 Scanning electron micrograph of the interlayer shear section of the circular short glass fiber reinforced polya...

Embodiment 3

[0042]Prepare the I.44P clay suspension with a concentration of 2g / L, stir evenly and add flat glass fibers with a concentration of 200g / L, and use the electrostatic adsorption between the flat glass fibers and the clay to obtain flat glass fibers with clay adsorbed on the surface Reinforcement: Composite the above glass fiber reinforcement and polyamide 66 through an extrusion molding process to obtain a clay-loaded flat glass fiber reinforced polyamide composite material, which contains 10% flat glass fiber reinforcement.

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Abstract

The invention discloses a preparation method of a nucleator-carried glass-fiber-reinforced polyamide composite material. By utilizing the electrostatic adsorption action of positive and negative charges of the glass fiber and organic or inorganic nucleator, the organic nucleator or inorganic nucleator is adsorbed to the glass fiber surface to obtain a surface-modified fiber glass reinforcement body; and the polyamide resin and modified fiber glass reinforcement body are compounded by melt blending to induce the crystallization of the polymer on the glass fiber surface, thereby enhancing the crystallinity of the polymer and improving the interface combination between the glass fibers and polymer matrix.

Description

technical field [0001] The invention relates to a glass fiber reinforced polyamide composite material loaded with a nucleating agent, more specifically, to a glass fiber reinforced body loaded with a nucleating agent and a polyamide with excellent crystallization performance and interfacial connection performance prepared by electrostatic adsorption. Amide composites. Background technique [0002] In the field of composite materials, glass fiber reinforced polymer matrix composites occupy a large proportion. The interfacial bonding between the glass fibers and the polymer matrix is ​​an important factor in obtaining high-performance composites. Good interfacial bonding is conducive to the effective transmission of stress and improves the energy absorption of the polymer matrix. Since the thermoplastic resin matrix itself lacks reactive functional groups, it is difficult to form a good chemical bond with the fiber, so the surface of the glass fiber usually needs to be modif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08K9/04C08K7/14B29C47/92B29C48/92
CPCB29C48/92C08K3/346C08K7/14C08K9/12C08L77/06
Inventor 张玲王政华李春忠杜婷婷齐栋栋
Owner EAST CHINA UNIV OF SCI & TECH
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