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Hyperbranched ester compound and nylon fiber-added composite material and preparation method thereof

A technology of ester compounds and composite materials, which is applied in the field of hyperbranched ester compounds and nylon fiber-reinforced composite materials and their preparation, and can solve the problem of high roughness

Active Publication Date: 2022-03-25
厦门德丰行塑胶工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a new hyperbranched ester compound and nylon fiber composite material and its preparation in order to overcome the defects of serious "floating fiber" phenomenon and high roughness on the surface of the existing nylon fiber composite material method, the nylon fiber-reinforced composite material has high rigidity and low warpage performance, and there is basically no "floating fiber" on the surface, and the roughness is low

Method used

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  • Hyperbranched ester compound and nylon fiber-added composite material and preparation method thereof
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  • Hyperbranched ester compound and nylon fiber-added composite material and preparation method thereof

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preparation example Construction

[0034] Among the present invention, the preparation method of described hyperbranched ester compound comprises the following steps:

[0035] (1) carry out ring-opening polymerization reaction with the hydroxy epoxy group phenol compound of structure shown in formula (I) in the presence of initiator, obtain polyhydroxyl hyperbranched precursor;

[0036] (2) Polycondensing polyhydroxy hyperbranched precursors and special hindered carboxylic acids having a structure shown in formula (II) under the catalytic action of an esterification catalyst to obtain hyperbranched ester compounds;

[0037]

[0038] In formula (I), m is an integer of 1-10, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. m is preferably an integer of 1-5, most preferably 1. When m is 1, the hydroxy epoxy phenolic compound is 4-(2-hydroxyl-4-(oxirane-2-alkyl) butyl) phenol, and its structural formula is as shown in formula (III) ;

[0039]

[0040] In formula (II), n is an integer of 0-10, such as 0, 1, 2, 3, 4, ...

preparation example 1

[0067] Preparation Example 1 This preparation example is used to illustrate the preparation of hyperbranched ester compounds

[0068] (1) Take 100 g of 4-(2-hydroxy-4-(oxirane-2-alkyl) butyl) phenol that has been dehydrated and deoxygenated in a Schlenk bottle, add 5 g potassium tert-butoxide, 5 g tert-butoxide Butanol and 50g tetrahydrofuran were reacted for 10h at a temperature of 50°C and a pressure of 0.25MPa under a nitrogen atmosphere to obtain a polyhydroxy hyperbranched precursor;

[0069] (2) Add 100g of polyhydroxy hyperbranched precursor and 600g of 5-hydroxy-3,4-diphenylpentanoic acid into a Schlenk bottle respectively, add 6g of concentrated sulfuric acid, and react at a temperature of 180°C and a pressure of 0.1MPa for 2h, Obtain hyperbranched ester compound, denoted as CZ-1.

preparation example 2

[0070] Preparation Example 2 This preparation example is used to illustrate the preparation of hyperbranched ester compounds

[0071] (1) Take 100 g of 4-(2-hydroxy-4-(oxirane-2-alkyl) butyl) phenol that has been dehydrated and deoxygenated in a Schlenk bottle, add 5 g potassium tert-butoxide, 5 g tert-butoxide Butanol and 50g tetrahydrofuran were reacted for 30h at a temperature of 60°C and a pressure of 0.25MPa under a nitrogen atmosphere to obtain a polyhydroxyl hyperbranched precursor;

[0072] (2) Add 100g of polyhydroxy hyperbranched precursor and 500g of 5-hydroxy-3,4-diphenylpentanoic acid into a Schlenk bottle, add 6g of concentrated sulfuric acid, and react at a temperature of 100°C and a pressure of 0.25MPa for 0.5h , to obtain hyperbranched ester compounds, denoted as CZ-2.

[0073] Preparation Example 3 This preparation example is used to illustrate the preparation of hyperbranched ester compounds

[0074](1) Take 100 g of 4-(2-hydroxy-4-(oxirane-2-alkyl) butyl)...

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Abstract

The invention belongs to the technical field of polymer composite materials, and discloses a hyperbranched ester compound, a nylon fiber-added composite material and a preparation method of the hyperbranched ester compound and the nylon fiber-added composite material. The nylon fiber-added composite material contains nylon 66, modified glass fiber, a hyperbranched ester compound, an anti-warping agent, a compatible flexibilizer, a highlight lubricant and an antioxidant. The weight ratio of the nylon 66 to the modified glass fiber to the hyperbranched ester compound is 1: (0.25-0.8): (0.01-0.04); the modified glass fiber is glass fiber with the surface treated by a silane coupling agent. The nylon fiber-added composite material provided by the invention has excellent apparent mass and few or even no floating fibers on the surface under the condition of keeping high-strength mechanical properties, and the application field of the nylon 66 fiber-added composite material is widened.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a hyperbranched ester compound and nylon fiber-reinforced composite material and a preparation method thereof. Background technique [0002] Nylon 66 fiber-reinforced composite materials are widely used in automobiles, electronic appliances, precision instruments and other fields due to their excellent mechanical properties, heat resistance, wear resistance and low friction coefficient. [0003] Nylon 66 fiber-reinforced composite materials usually need to add a large amount of glass fiber to the nylon 66 system to improve its mechanical properties. However, with the increase in the amount of glass fiber, the surface of the product will appear glass fiber exposed phenomenon, which is called " "floating fiber" phenomenon. Floating fibers lead to rough surface and poor gloss of molded products, affecting the apparent quality of products and poor orn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/66C08L77/00C08L67/00C08K9/06C08K7/14
CPCC08G63/66C08L77/00C08L67/00C08K9/06C08K7/14
Inventor 熊吉辉黄志勤杨锦志
Owner 厦门德丰行塑胶工业有限公司
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