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High-strength high-flowability low-warpage long glass fiber reinforced polyamide composite material as well as preparation method and application thereof

A technology of long glass fiber and composite material, which is applied in the field of glass fiber modified polyamide composite material, can solve the problem that the industrial fan blade is not easy to warp and deform, and achieves the improvement of fluidity and appearance of parts, stable use and not easy to warp. warp effect

Pending Publication Date: 2021-10-26
CHONGQING POLYCOMP INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the technical problem to be solved by the present invention lies in a kind of glass fiber reinforced polyamide composite material pellet, a kind of glass fiber reinforced polyamide composite material and its preparation method and application, especially a kind of high strength high flow low Warping long glass fiber reinforced polyamide (PA66) composite material, the composite material can significantly improve the mechanical properties, flow channel length and surface quality of long glass fiber reinforced PA66 composite material, and the prepared industrial fan blades are not easy to warp and deform. Under the condition of high-speed rotation, it is stable in use and meets the new requirements for the development of industrial fan blade materials

Method used

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  • High-strength high-flowability low-warpage long glass fiber reinforced polyamide composite material as well as preparation method and application thereof
  • High-strength high-flowability low-warpage long glass fiber reinforced polyamide composite material as well as preparation method and application thereof
  • High-strength high-flowability low-warpage long glass fiber reinforced polyamide composite material as well as preparation method and application thereof

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preparation example Construction

[0084] The invention provides a kind of preparation method of the polyamide composite material reinforced by glass fiber, comprising the following steps:

[0085] 1) After PA66 resin, semi-aromatic nylon resin, lubricant, nucleating agent and antioxidant are mixed, a premix is ​​obtained;

[0086] 2) Put the premixed material obtained in the above steps through twin-screw melt-extruded molten material into an impregnation mold with flat glass fibers placed therein. Fiber reinforced polyamide composites.

[0087] In the present invention, firstly, PA66 resin, semi-aromatic nylon resin, lubricant, nucleating agent and antioxidant are mixed to obtain a premixed material.

[0088] In the present invention, the premixed material obtained in the above steps is melted and extruded by twin-screws, and then sent into an impregnation mold with flat glass fibers, and the molten material is soaked in the flat glass fibers, then released from the mold, and then cooled to obtain Glass fib...

Embodiment 1

[0109] High-strength continuous flat long glass fiber reinforced PA66 composite material 1, including the following raw materials:

[0110] 49.2 kg of PA66 (polyamide) resin, model PA66-EPR24;

[0111] 16 rolls (4800 pieces per roll) of high-strength continuous flat long glass fiber, the model is ER5301T-2000, the cross-section is flat, the cross-section width-to-thickness ratio is 4:1, and the surface is coated with impregnation with good compatibility with PA66 resin agent;

[0112] 0.15 kg of lubricant is ethylene-acrylic acid copolymer lubricant;

[0113] 10 kg of semi-aromatic nylon resin MXD6 with special chemical structure: synthesized by condensation of m-xylylenediamine and adipic acid;

[0114] 0.15 kg of hindered phenolic primary antioxidant, model Irganox 1098, and 0.15 kg of phosphite antioxidant, model Irganox 168;

[0115] 0.3 kg of black masterbatch, the model is CABOT-PA3785;

[0116] 0.05 kg of nucleating agent, the model is P22.

[0117] The preparation...

Embodiment 2

[0124] High-strength continuous flat long glass fiber reinforced PA66 composite material 2, including the following raw materials:

[0125] 59.2 kg of PA66 (polyamide) resin, model PA66-EPR24;

[0126] 16 rolls of high-strength flat long glass fiber, the model is ER5301T-2000, the cross-section is flat, and the width-to-thickness ratio of the cross-section is 4:1;

[0127] 0.15 kg of lubricant is ethylene-acrylic acid copolymer lubricant;

[0128] 0.15 kg of hindered phenolic primary antioxidant, model Irganox 1098, and 0.15 kg of phosphite antioxidant, model Irganox 168;

[0129] 0.3 kg of black masterbatch, the model is CABOT-PA3785.

[0130] 0.05 kg of nucleating agent, the model is P22.

[0131] The preparation method of high-strength continuous flat long glass fiber reinforced PA66 composite material 2, prepares raw materials according to the above weight;

[0132] Step 1: High-strength continuous flat glass fiber model ER5301T-2000;

[0133] Step 2: 59.2 kilograms o...

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Abstract

The invention provides a glass fiber reinforced polyamide composite material granule. The polyamide composite material granule comprises flat glass fibers, and the length direction of the flat glass fibers and the length direction of the polyamide composite material granules are distributed in the same direction. The invention further provides the high-strength flat continuous long glass fiber reinforced PA66 composite material, the mechanical property of the PA66 composite material is improved, the fluidity and the appearance of a product are improved, the buckling deformation of the composite material product is reduced, the mechanical property, the runner length and the surface quality of the long glass fiber reinforced PA66 composite material can be remarkably improved, and a prepared industrial fan blade is not easy to warp and deform, is stable to use under the condition of high-speed rotation, and meets the new development requirements of high mechanical property, high dimensional stability, high surface quality and low water absorption of an industrial fan blade material.

Description

technical field [0001] The invention belongs to the technical field of glass fiber-modified polyamide composite materials, and relates to a glass fiber-reinforced polyamide composite material pellet, a glass fiber-reinforced polyamide composite material and its preparation method and application, especially to a high-strength polyamide composite material High flow and low warpage long glass fiber reinforced polyamide (PA66) composite material and its preparation method and application. Background technique [0002] Polyamide resin, the English name is polyamide, referred to as PA. Commonly known as nylon (Nylon), it is a general term for polymers containing amide groups in the repeating unit of the main chain of the macromolecule. Among the five major engineering plastics, it has the largest output, the most varieties and the most widely used varieties. PA66, also known as polyamide 66 or nylon 66, is more widely used in the automotive industry, instrument housings and oth...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K7/14C08J5/04
CPCC08J5/043C08J2377/06C08J2477/06C08K7/14
Inventor 梁珊周建刚曾庆文王艺晏兵何勇谭家顶杨小祥钟景军李晓雄
Owner CHONGQING POLYCOMP INT
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