Polycarbonate composition and preparing method thereof

A polycarbonate and composition technology, which is applied in the field of engineering plastics, can solve problems such as affecting dimensional stability and processing fluidity, reducing material toughness, and failing to achieve a balance between rigidity and toughness. amount of effect

Active Publication Date: 2015-12-09
KINGFA SCI & TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in conventional glass fiber-reinforced PC materials, glass fiber can endow the material with strong rigidity, but the toughness of the material is greatly damaged.
[0004] At present, fibrous fillers are mainly used for reinforcement in the system. The addition of fibrous fillers will greatly reduce the toughness of the material, and the balance of rigidi

Method used

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  • Polycarbonate composition and preparing method thereof

Examples

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Effect test

Example

[0068] Examples 1-9 and Comparative Examples 1-6: Preparation of polycarbonate composition

[0069] 1) Weigh each component according to the content of the formula, and dry the polycarbonate, fibrous filler, flame retardant, and other additives that need to be pre-baked at 120℃-130℃, and set the drying time as 4h-6h, to obtain dried polycarbonate, fibrous filler, flame retardant, and other additives;

[0070] 2) The pre-baked polycarbonate, fibrous filler, flame retardant and other additives are mixed uniformly through a high mixer, the mixing temperature is 30℃-50℃, and the mixing time is set at 5min-15min to obtain Evenly mixed polycarbonate, fibrous filler, flame retardant, and other additives;

[0071] 3) Pass the evenly mixed polycarbonate, flame retardant, and other additives through figure 1 As shown in the feeding port 1, the fibrous filler passes through as figure 1 The feeding ports 1, 2 or 3 shown are added to the twin-screw extruder. The temperature control setting temp...

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Abstract

The invention discloses a polycarbonate composition. The polycarbonate composition is prepared from, by weight, 50-90 parts of polycarbonate, 5-50 parts of fibrous filler, 0.01-30 parts of flame retardant and 0-10 parts of other adjuvants, wherein the sum of the weight parts of the four components is 100 parts. The fibrous filler comprises fibrous filler bodies with the length larger than or equal to 400 micrometers and accounts for 0.01-30 wt% of the fibrous filler. According to selection, the length and content distribution of the fibrous filler are adjusted in the formula of the polycarbonate composition, the fibrous filler can be distributed in the polycarbonate composition in a unimodal mode, while rigidity of the polycarbonate composition is enhanced, the polycarbonate composition has excellent toughness, rigidity and toughness can be balanced, modulus can be increased remarkably, and applicability and practicality of the composition are improved.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a polycarbonate composition and a preparation method thereof. Background technique [0002] Polycarbonate PC is one of the five major engineering plastics. It has high impact resistance and heat resistance, and is widely used in all aspects of people's production and life. However, due to some defects of polycarbonate, such as poor processing performance, easy stress cracking, sensitive notch resistance, and poor wear resistance, it cannot meet the needs of actual use in some occasions, so people began to use glass fiber for polycarbonate. Esters are enhanced. [0003] Glass-reinforced PC materials are widely used in the fields of automobiles, electronic appliances, and home appliance materials due to their good strength, toughness, and thermal properties. However, in conventional glass fiber-reinforced PC materials, glass fiber can impart strong rigidity to the ma...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/06C08K13/06C08K9/04C08K7/14C08K5/523C08K5/12C08K5/098B29C47/92B29C48/92
Inventor 李明昆刘贤文岑茵佟伟董相茂郭唐华
Owner KINGFA SCI & TECH CO LTD
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