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Hyperbranched polyester copolymer, spraying-free polycarbonate fiber-added composite material and preparation method thereof

A technology of hyperbranched polyester and polycarbonate, which is applied in the field of spray-free polycarbonate plus fiber composite materials and its preparation, and hyperbranched polyester copolymer, which can solve the problem of comprehensive mechanical properties, temperature resistance and chemical resistance, and surface The surface of the floating fiber has poor scratch resistance and cannot improve the surface floating fiber, etc., to achieve the effect of enhancing the comprehensive mechanical properties and chemical resistance, excellent mechanical properties, and excellent heat resistance

Inactive Publication Date: 2020-11-24
SINOPLAST NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some urgent problems to be solved in the field of spray-free PC fiber-added composite materials, especially the problem of floating fibers on the surface and poor surface scratch resistance.
Existing research generally uses the following two methods to improve the above problems: 1. Reduce the amount of glass fiber added, which will lead to a great reduction in the comprehensive mechanical properties, temperature resistance, and chemical resistance of such products; 2. Add a compatibilizer, and most of the compatibilizers are grafts of maleic anhydride. Since the surface activity of these compatibilizers is not high, if the addition amount is small, the compatibilization effect is limited and the surface floating fiber cannot be improved; if the addition amount Larger, the third phase in the polymer is formed, which not only has a great impact on the overall mechanical properties and surface hardness of the material, but also makes the fluidity of the material very low and the processing performance deteriorates

Method used

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  • Hyperbranched polyester copolymer, spraying-free polycarbonate fiber-added composite material and preparation method thereof
  • Hyperbranched polyester copolymer, spraying-free polycarbonate fiber-added composite material and preparation method thereof
  • Hyperbranched polyester copolymer, spraying-free polycarbonate fiber-added composite material and preparation method thereof

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Effect test

Embodiment 1

[0065] This embodiment provides a spray-free polycarbonate fiber-reinforced composite material, which is prepared from the following components by weight percentage:

[0066]

[0067] The preparation method of the above-mentioned spray-free polycarbonate fiber-added composite material is as follows:

[0068] Mix the polycarbonate, hyperbranched polyester copolymer, toughening agent S-2001, antioxidant B900, lubricant OP wax and anti-UV agent UV-234, mix the mixed material from the main feeding port Add it into a twin-screw extruder, and add the glass fiber at the side feed port of the twin-screw extruder, melt and blend, and obtain the spray-free polycarbonate fiber-reinforced composite material after extrusion; The process parameters of the twin-screw extruder are as follows: the temperature of the first zone is 200°C, the temperature of the second zone is 270°C, the temperature of the third zone is 280°C, the temperature of the fourth zone is 280°C, the temperature of the...

Embodiment 2

[0070] This embodiment provides a spray-free polycarbonate fiber-reinforced composite material, which is prepared from the following components by weight percentage:

[0071]

[0072] The preparation method of the above-mentioned spray-free polycarbonate fiber-added composite material is as follows:

[0073] Mix the polycarbonate, hyperbranched polyester copolymer, toughening agent S-2001, antioxidant B900, lubricant OP wax and anti-UV agent UV-234, mix the mixed material from the main feeding port Add it into a twin-screw extruder, and add the glass fiber at the side feed port of the twin-screw extruder, melt and blend, and obtain the spray-free polycarbonate fiber-reinforced composite material after extrusion; The process parameters of the twin-screw extruder are as follows: the temperature of the first zone is 200°C, the temperature of the second zone is 270°C, the temperature of the third zone is 280°C, the temperature of the fourth zone is 280°C, the temperature of the...

Embodiment 3

[0075] This embodiment provides a spray-free polycarbonate fiber-reinforced composite material, which is prepared from the following components by weight percentage:

[0076]

[0077]

[0078] The preparation method of the above-mentioned spray-free polycarbonate fiber-added composite material is as follows:

[0079] Mix the polycarbonate, hyperbranched polyester copolymer, toughening agent S-2001, antioxidant B900, lubricant OP wax and anti-UV agent UV-234, mix the mixed material from the main feeding port Add it into a twin-screw extruder, and add the glass fiber at the side feed port of the twin-screw extruder, melt and blend, and obtain the spray-free polycarbonate fiber-reinforced composite material after extrusion; The process parameters of the twin-screw extruder are as follows: the temperature of the first zone is 200°C, the temperature of the second zone is 270°C, the temperature of the third zone is 280°C, the temperature of the fourth zone is 280°C, the temper...

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Abstract

The invention provides a hyperbranched polyester copolymer, a spraying-free polycarbonate fiber-added composite material and a preparation method thereof. The hyperbranched polyester copolymer is obtained by copolymerizing carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate; and the carboxyl-containing hyperbranched polyester acrylate is obtained by modifying hyperbranched polyester with succinic anhydride, hexamethylene diisocyanate and hydroxyethyl acrylate. The spraying-free polycarbonate fiber-added composite material is prepared from the following raw materialsin percentage by weight: 57-80% of polycarbonate, 10-30% of glass fiber, 0.2-1% of hyperbranched polyester copolymer, 5-10% of toughener, 0.1-0.5% of antioxidant, 0.5-1.5% of lubricant and 0.1-0.5% ofanti-UV (ultraviolet) agent. The spraying-free polycarbonate fiber-added composite material has the advantages of low surface floating fiber, high gloss and favorable scratch resistance, and has favorable mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to a hyperbranched polyester copolymer, a spray-free polycarbonate fiber-added composite material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polycarbonate composites are widely used in mobile phones, tablets, notebooks and other electronic products due to their good toughness, rigidity and chemical resistance. Usually, after injection molding of glass fiber reinforced polycarbonate composite materials, the plastic on the surface of the part is sprayed or electroplated to make up for the lack of floating fibers and easy scratches on the surface of the product. In recent years, with the introduction of spray-free materials, compared with traditional plastic materials, spray-free materials have rich colors, good surface gloss, good chemical resistance, good surface scratch resistance, more environmental protection, lower c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/32C08G63/91C08G63/06C08L69/00C08L51/08C08K7/14C08J5/10
CPCC08F290/061C08G63/912C08G63/06C08J5/10C08J5/043C08J2369/00C08J2451/08C08K7/14C08F220/325
Inventor 朱怀才谢平刘羽玲梁振锋
Owner SINOPLAST NEW MATERIAL
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