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High-toughness glass fiber reinforced polymer alloy and preparation method thereof

A polymer and high toughness technology, which is applied in the field of high toughness glass fiber reinforced polymer alloy and its preparation, can solve the problems of unsatisfactory improvement of toughening effect, achieve the goal of saving process cost, improving bonding performance and increasing dispersibility Effect

Active Publication Date: 2015-08-19
GUANGDONG KUMHO SUNNY POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the toughening effect of these tougheners is not ideal after a certain amount of addition, so it is necessary to develop a method for preparing glass fiber reinforced polymer alloys with good toughness.

Method used

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  • High-toughness glass fiber reinforced polymer alloy and preparation method thereof
  • High-toughness glass fiber reinforced polymer alloy and preparation method thereof
  • High-toughness glass fiber reinforced polymer alloy and preparation method thereof

Examples

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preparation example Construction

[0031] The following is the preparation method of the high-toughness glass fiber reinforced polymer alloy of the present invention, which specifically includes the following steps:

[0032] Step 1, prepare materials according to the components and parts by weight in Table 1:

[0033] Step 2, mixing polybutylene terephthalate, toughening agent, coupling agent, antioxidant and lubricant in a mixing mixer;

[0034] Step 3. Enter the mixture of step 2 into the twin-screw extruder through the main feeding port, and the glass fiber is blended and granulated through the side feeding port to obtain alloy particles. The temperature of the barrel of the extruder is 260 ° C, and the screw speed is 600rpm.

[0035] The viscosity of the polybutylene terephthalate is 0.98-1.02dl / g; the plasma-treated continuous glass fiber (Examples 1-3, Comparative Example 1) has a diameter of 10 μm without sizing after plasma treatment Continuous glass fiber, the processing conditions are: the atmospher...

Embodiment 2

[0069] The difference between Example 2 and Comparative Example 1 is due to the different types of tougheners, which shows that non-crosslinked tougheners can better toughen plasma glass fiber reinforced polymer alloys;

[0070] The impact toughness of Example 2 is better than that of Comparative Example 2. The difference between plasma treatment of glass fiber can greatly improve the impact toughness of reinforced materials; but Comparative Example 4 shows that after excessive plasma treatment, the impact toughness decreases significantly.

[0071] The difference between Example 2 and Comparative Example 3 shows that the direct use of continuous fibers can significantly improve the toughness of the material.

[0072] From the test results in Table 4, it can be seen that the above conclusions can also be obtained in the examples and comparative examples of polyamide 66.

[0073] In summary, the use of plasma treatment of continuous glass fiber to strengthen the matrix resin th...

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Abstract

The invention relates to high-toughness glass fiber reinforced polymer alloy and a preparation method thereof. The alloy comprises components of, by weight, 40 parts to 95 parts of matrix resin, 5 parts to 50 parts of plasma processed glass fiber, 1 part to 10 parts of flexibilizers, 0.1 part to 5 parts of coupling agents, 0.1 part to 1 part of antioxidants and 0.1 part to 1 part of lubricants. According to the preparation method, glass fibers which are not sized are subjected to plasma processing, and accordingly, the roughness and active groups on glass fiber surfaces are increased, and the wettability of the flexibilizer to the glass fibers and the dispersity of the glass fibers in polymers are increased; by the use of the coupling agents, the wettability of the flexibilizer to the glass fibers and the fiber and polymer bonding performance are further improved, and accordingly, the strength of the glass fiber enhancement material is improved greatly, and the glass fiber enhancement polymer alloy material toughness is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and relates to a high-toughness glass fiber reinforced polymer alloy and a preparation method thereof. Background technique [0002] Since the strength limits the application of polymers to a certain extent, fiber-reinforced polymer alloys have become more and more widely used in recent years. In particular, the relatively low price of glass fiber makes the application of glass fiber reinforced materials more and more widely. However, although glass fiber reinforced composite materials have high rigidity, the addition of glass fiber makes the toughness of polymer alloys drop extremely seriously. This restricts the application of glass fiber reinforced polymer alloys in places that require high toughness. Therefore, the improvement of the toughness of glass fiber reinforced polymers has become a problem that needs to be solved. [0003] At present, the main method of toughening glass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L77/06C08L69/00C08L55/02C08L23/08C08L51/06C08K13/06C08K9/00C08K7/14C08K5/5425C08J5/08
Inventor 覃辉林李强罗明华辛敏琦
Owner GUANGDONG KUMHO SUNNY POLYMER MATERIAL
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