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Preparation method of mold pressing composite material plate spring

A technology of composite material plates and molded materials, which is applied in the direction of leaf springs, springs, mechanical equipment, etc., can solve the problems of low tensile strength, low bending strength and low shear strength of leaf springs, and achieve good bending performance, Good tensile properties and high shear strength

Pending Publication Date: 2022-05-27
山东莱蔚特复合材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) The tensile strength of the existing molded composite leaf spring is low;
[0009] (2) The bending strength of the existing molded composite leaf spring is low;
[0010] (3) The interlaminar shear strength of the existing molded composite leaf spring is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of fiber composite resin

[0057] a, glass fiber modification

[0058] The glass fiber was dried at 120 °C for 240 min, taken out and soaked in N,N-dimethylformamide, added with a certain amount of 3-aminopropyltrimethoxysilane, and sonicated for 60 min to obtain a dispersion of modified glass fiber;

[0059] The mass ratio of the glass fiber to N,N-dimethylformamide is 1:10;

[0060] The mass ratio of the 3-aminopropyltrimethoxysilane to the glass fiber is 1:50;

[0061] b. Composite resin

[0062] Add the dispersion of fiberglass into the polyamide resin emulsion, ultrasonicate for 30min, then add diethylenetriamine and cetyltrimethylammonium chloride, ultrasonicate for 60min, filter and dry to obtain the fiber composite resin;

[0063] The mass ratio of the glass fiber dispersion to the polyamide resin emulsion is 5:1;

[0064]The solid content of the polyamide resin emulsion is 50%;

[0065] The mass ratio of the dispersion liquid of the diethyl...

Embodiment 2

[0098] (1) Preparation of fiber composite resin

[0099] a, glass fiber modification

[0100] The glass fiber was dried at 105°C for 300min, taken out and soaked in N,N-dimethylformamide, a certain amount of 3-aminopropyltrimethoxysilane was added, and sonicated for 50min to obtain a dispersion of modified glass fiber;

[0101] The mass ratio of the glass fiber to N,N-dimethylformamide is 1:9;

[0102] The mass ratio of the 3-aminopropyltrimethoxysilane to the glass fiber is 1:45;

[0103] b. Composite resin

[0104] Add the dispersion of fiberglass into the polyamide resin emulsion, ultrasonicate for 25min, then add diethylenetriamine and cetyltrimethylammonium chloride, ultrasonicate for 55min, filter and dry to obtain the fiber composite resin;

[0105] The mass ratio of the glass fiber dispersion to the polyamide resin emulsion is 4.5:1;

[0106] The solid content of the polyamide resin emulsion is 55%;

[0107] The mass ratio of the dispersion liquid of the diethylen...

Embodiment 3

[0140] (1) Preparation of fiber composite resin

[0141] a, glass fiber modification

[0142] The glass fiber was dried at 125°C for 200min, taken out and soaked in N,N-dimethylformamide, added with a certain amount of 3-aminopropyltrimethoxysilane, and ultrasonicated for 70min to obtain a dispersion of modified glass fiber;

[0143] The mass ratio of the glass fiber to N,N-dimethylformamide is 1:11;

[0144] The mass ratio of the 3-aminopropyltrimethoxysilane to the glass fiber is 1:55;

[0145] b. Composite resin

[0146] Add the dispersion of fiberglass into the polyamide resin emulsion, ultrasonicate for 35min, then add diethylenetriamine and cetyltrimethylammonium chloride, ultrasonicate for 65min, filter and dry to obtain the fiber composite resin;

[0147] The mass ratio of the glass fiber dispersion to the polyamide resin emulsion is 5.5:1;

[0148] The solid content of the polyamide resin emulsion is 45%;

[0149] The mass ratio of the dispersion liquid of the diet...

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PUM

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Abstract

The invention relates to a preparation method of a mould pressing composite material plate spring. The preparation method comprises the steps of preparing fiber composite resin, preparing modified filler, preparing modified mould pressing material resin and preparing the plate spring. The prepared mold pressing composite material plate spring is long in fatigue life, and the number of fatigue times is 30,000-307,000; the prepared mold pressing composite material plate spring is good in tensile property, the tensile strength ranges from 1855 Mpa to 1862 Mpa, and the tensile elastic modulus ranges from 72 Gpa to 73 Gpa.

Description

technical field [0001] The invention relates to a preparation method of a molded composite material leaf spring, and belongs to the field of preparation of leaf springs. Background technique [0002] As an important component of the automobile suspension, the leaf spring transmits and buffers all the forces and moments between the frame and the wheels, and has a guiding role. It is the key component supporting the main body of the automobile. The performance of the leaf spring is directly It affects the smoothness of the car, the stability of the operation and the bearing capacity. At present, the leaf spring of the car is mainly made of high-quality alloy steel, and there are many production processes, large equipment footprint, and high energy consumption, especially in recent years. With the soaring steel prices, environmental protection and safety and comfort standards, alloy leaf springs have been difficult to meet the needs of the future automotive industry. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L77/00C08L51/10C08L75/04C08K9/06C08K7/14C08K5/29C08K5/42B60G11/10
CPCC08L63/00B60G11/10C08K2201/011C08L77/00C08L51/10C08L75/04C08K9/06C08K7/14C08K5/29C08K5/42
Inventor 李伟王强周帅王晓俊刘忠肃任国红张恒海朱鹏许世伟
Owner 山东莱蔚特复合材料有限责任公司