Enhanced type composite filler and method for preparing fiber-reinforced plastic product by using same

A composite filler and reinforced technology, which is applied in the field of preparation of reinforced composite filler and its FRP products, can solve the problems of single type, unmodified, reduced strength and toughness, etc., to improve compactness, increase strength, and eliminate pores Effect

Inactive Publication Date: 2012-07-11
秦皇岛耀华装备集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the types of fillers currently used are relatively single, and most of them are unmodified primary inorganic powders.
Therefore, when using it as a filler, the FRP products produced often have the problem of decreasing strength and toughness while increasing rigidity and hardness.

Method used

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  • Enhanced type composite filler and method for preparing fiber-reinforced plastic product by using same
  • Enhanced type composite filler and method for preparing fiber-reinforced plastic product by using same
  • Enhanced type composite filler and method for preparing fiber-reinforced plastic product by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The process of powder surface modification, the specific steps are as follows:

[0027] A. Take 1000g of fibrous sepiolite powder with a particle size of 0.01 μm, 1000g of kaolin powder with a particle size of 0.1 μm and 1000g of carbon black with a particle size of 0.01 μm, put them into an oven respectively, and dry them at 120°C for 2 hours;

[0028] B. Pour 1000g of dried fiber sepiolite powder into the reactor, and in the state of high-speed stirring, spray 20g of titanate coupling agent NDZ-401 that has been diluted and dispersed with a small amount of acetone, keep the temperature at 60°C, and process time 1min;

[0029] C. Pour 1000g of dried kaolin powder into the reactor, and under high-speed stirring, spray 30g of silane coupling agent KH550 that has been diluted and dispersed with a small amount of acetone, keep the temperature at 70°C, and process for 7 minutes;

[0030] D. Pour 1000g of dried carbon black into the reactor, under high-speed stirring, spray...

Embodiment 2

[0033] The steps in Example 2 are the same as those in Example 1, the difference being that the powders used are 1000 g of chopped glass fiber powder with an average particle size of 1 μm, treated with 25 g of silane coupling agent KH570 at 60°C for 2 minutes; 500g of graphite powder was treated with 5g of aluminate coupling agent SG-Al 821 at 65°C for 3 minutes; 400g of alumina powder with an average particle size of 1 μm was treated with 15g of sodium stearate at 75°C for 8 minutes.

Embodiment 3

[0035] The steps of Example 3 are the same as in Example 1, the difference is that the powders used are carbon fiber powder with an average particle size of 5 μm, which is treated with zirconate coupling agent SG-Zr803; mica powder with an average particle size of 70 μm, which is treated with silane Coupling agent KH560 treatment; aluminum hydroxide powder with an average particle size of 5 μm is treated with polyethylene glycol; the treatment time is 5 minutes, and the temperature is maintained at about 80 ° C during modification.

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Abstract

The invention provides an enhanced composite filler capable of improving the strength, the stiffness and the dimensional stability of a fiber-reinforced plastic product and a method for preparing the fiber-reinforced plastic product by using the enhanced composite filler. The enhanced composite filler specifically consists of three kinds of modified powder, i.e. modified rod-shaped powder, modified flake-shaped powder and modified granular powder, and the modified powder comprises powder and modifiers coated on the surface of the powder, wherein the weight of the modifiers is 0.5-10% of the weight of the modified powder, and the modified rod-shaped powder accounts for 10-90 parts by weight, the modified flake-shaped powder accounts for 5-60 parts by weight, and the modified granular powder accounts for 0.5-40 parts by weight. The method provided by the invention has the advantages that: the prepared product is excellent in strength, stiffness and toughness, the raw materials are easily obtained, and the operating process is simple, so that the method is applicable for industrial scale production.

Description

technical field [0001] The invention relates to a method for preparing a reinforced composite filler and a glass fiber reinforced plastic product thereof. Background technique [0002] FRP products are known for their light weight and high strength, but their wide application is limited due to their relatively high cost. At present, there are two main ways to reduce the cost of FRP products, one is to optimize the structure, and the other is to replace relatively cheap raw materials without reducing the performance of the product. Secondly, in the existing FRP system, when forming larger thin-shell products, although measures such as preset reinforcing ribs can be used to increase the rigidity of the product, problems such as product deformation often occur due to insufficient rigidity; and for some For products, if there are too many ribs and too dense, the molding process will be slightly complicated and the construction will be inconvenient. Therefore, how to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08L67/06C08K13/06C08K7/14
Inventor 付秀君李亚东刘永惠李娇李立民孙刚
Owner 秦皇岛耀华装备集团股份有限公司
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