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Thin-wall flame-retardant polycarbonate material and preparation method thereof

A flame-retardant polycarbonate and thin-wall technology, which is applied in the field of thin-wall flame-retardant polycarbonate materials and its preparation, can solve problems such as brittleness and cracking, achieve good hydrolysis resistance, increase compatibility, and improve impact resistance intensity effect

Pending Publication Date: 2022-05-13
SINOPLAST NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology uses a flame retardant system compounded by sulfonate and silicone to achieve a UL94V-0 level with a thickness of 0.25mm, but no toughening agent is added to the formula, so the material produced in this way is easy to become brittle at low temperatures. It will also crack at room temperature because it is not resistant to hot and humid hydrolysis

Method used

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  • Thin-wall flame-retardant polycarbonate material and preparation method thereof
  • Thin-wall flame-retardant polycarbonate material and preparation method thereof
  • Thin-wall flame-retardant polycarbonate material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A thin-walled flame-retardant PC material provided in this embodiment, its preparation method includes the following steps:

[0073] (1) Mix 100 parts by weight of silicone-acrylate copolymer XT-641A, 0.2 parts by weight of tert-butyl peroxybenzoate and 2 parts by weight of glycidyl methacrylate (GMA), and extrude from a single screw The main feeding port of the machine is added, and the reaction is extruded and granulated to obtain a GMA-grafted silicone-acrylate copolymer, which is recorded as the toughening agent PSi / PA-GMA. The processing temperature of each zone of the single-screw extruder is: the temperature of the first zone is 170°C, the temperature of the second zone is 180°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 190°C, the temperature of the fifth zone is 190°C, and the temperature of the sixth zone is 200°C, the head temperature is 200°C, and the screw speed is 250r / min.

[0074] (2) Dry PC resin 2800 and PC powd...

Embodiment 2

[0077] A thin-walled flame-retardant PC material provided in this embodiment, its preparation method includes the following steps:

[0078] (1) Mix 100 parts by weight of silicone-acrylate copolymer XT-641A, 0.2 parts by weight of tert-butyl peroxybenzoate and 2 parts by weight of GMA, and add it from the main feeding port of the single-screw extruder, Reactive extrusion and granulation to obtain a GMA-grafted silicone-acrylate copolymer, which is recorded as the toughening agent PSi / PA-GMA. The processing temperature of each zone of the single-screw extruder is: the temperature of the first zone is 170°C, the temperature of the second zone is 180°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 190°C, the temperature of the fifth zone is 190°C, and the temperature of the sixth zone is 200°C, the head temperature is 200°C, and the screw speed is 250r / min.

[0079] (2) Dry PC resin 115 and PC powder 2100 at 120°C for 2 to 4 hours, so that th...

Embodiment 3

[0082] A thin-walled flame-retardant PC material provided in this embodiment, its preparation method includes the following steps:

[0083] (1) Mix 100 parts by weight of silicone-acrylate copolymer XT-641A, 0.2 parts by weight of tert-butyl peroxybenzoate and 2 parts by weight of GMA, and add it from the main feeding port of the single-screw extruder, Reactive extrusion and granulation to obtain a GMA-grafted silicone-acrylate copolymer, which is recorded as the toughening agent PSi / PA-GMA. The processing temperature of each zone of the single-screw extruder is: the temperature of the first zone is 170°C, the temperature of the second zone is 180°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 190°C, the temperature of the fifth zone is 190°C, and the temperature of the sixth zone is 200°C, the head temperature is 200°C, and the screw speed is 250r / min.

[0084](2) Dry PC resin CH8225 and PC powder 2100 at 120°C for 2 to 4 hours, so that ...

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Abstract

The invention discloses a thin-wall flame-retardant polycarbonate material and a preparation method thereof. The thin-wall flame-retardant polycarbonate material is prepared from the following raw materials: polycarbonate resin, polycarbonate powder, a flexibilizer, a compound flame retardant, a phosphorus flame retardant, a charring agent, an anti-dripping agent, an antioxidant and a lubricant, the toughening agent is an organic silicon-acrylate copolymer grafted by glycidyl methacrylate; the compound flame retardant is prepared from potassium diphenyl sulfone sulfonate, potassium perfluorobutanesulfonate and octaphenyl polyhedral oligomeric silsesquioxane; the charring agent is a hyperbranched triazine charring agent and / or hyperbranched polyester resin containing hydroxyl groups. The thin-wall flame-retardant PC material has excellent thin-wall flame-retardant performance while having good low-temperature impact resistance, hydrolysis resistance and high-temperature and high-humidity resistance, is good in processability and can be widely applied to thin-wall parts such as 5G communication, electronic and electrical shells and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a thin-walled flame-retardant polycarbonate material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) resin is a thermoplastic engineering plastic with excellent properties such as creep resistance, good dimensional stability, high temperature resistance, low water absorption, and non-toxicity. It has good flame retardancy and can reach UL94V-2 level. Widely used in electronic appliances, auto parts, telecommunications industry components, optical components and lighting fields. With the development of the times, the lightweight of plastic products has become an important development direction. In order to achieve lightweight, plastic products are getting thinner and thinner, and the requirements for the flame retardancy of materials are also getting higher and higher. For example: some mobile phone back covers and charging treasure back covers ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L51/00C08L83/04C08L87/00C08K9/10C08K3/32C08K5/523C08K5/42
CPCC08L69/00C08L2201/02C08L2201/08C08L2207/53C08L51/003C08L83/04C08L87/00C08K9/10C08K3/32C08K5/523C08K5/42
Inventor 朱怀才何迎新罗海威刘羽玲刘显勇
Owner SINOPLAST NEW MATERIAL
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