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Yellowing-resistant and flame-retardant polyamide composition and preparation method thereof

A polyamide composition, flame retardant technology, applied in the field of anti-yellowing flame retardant polyamide composition and its preparation

Inactive Publication Date: 2019-09-13
江苏晋伦塑料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on this, with respect to the known heat-aging resistant polyamide molding composition, the object of the present invention is to provide a kind of anti-yellowing flame-retardant polyamide composition, which does not affect the coloring performance and simultaneously improves the problem of heat-induced yellowing, Also highly flame retardant

Method used

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  • Yellowing-resistant and flame-retardant polyamide composition and preparation method thereof
  • Yellowing-resistant and flame-retardant polyamide composition and preparation method thereof
  • Yellowing-resistant and flame-retardant polyamide composition and preparation method thereof

Examples

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Embodiment 1

[0073] Example 1 and Comparative Example 1, it can be seen that the bromination (polystyrene) of the anionic PS substrate and the bromination (polystyrene) of the free radical PS substrate perform in terms of thermal yellowing resistance, and the bromination (polystyrene) of the anionic PS substrate Chemical (polystyrene) is obviously better than free radical PS matrix bromide (polystyrene), and it also shows that the heat stability of the flame-retardant polyamide composition is more difficult due to the flame-retardant component, and a suitable flame-retardant Agent selection is a necessary prerequisite.

[0074] In Examples 2 to 3 and Comparative Examples 2 to 3, it can be seen that the effect of aromatic dicarboxylic acid (2,6-naphthalene dicarboxylic acid) on stabilizing the polyamide composition, adding 2,6-naphthalene dicarboxylic acid The examples 2-3 of the examples 2-3 are significantly improved compared with the non-added comparative examples 2-3 regardless of short...

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Abstract

The invention belongs to the technical field of polymer materials, and concretely relates to a yellowing-resistant and flame-retardant polyamide composition and a preparation method thereof. The polyamide composition comprises 25.0-70.0 wt% of polyamide, 10-35 wt% of a flame retardant, 0.1-1.0 wt% of aromatic dicarboxylic acid, 0.1-2.0 wt% of an antioxidant, 5-50 wt% of a reinforcing agent and 0.1-5.0 wt% of a functional assistant. The polyamide composition is obtained by melt blending, and the preparation method has the advantages of simplicity, low production cost, and facilitation of promotion. The polyamide composition of the present invention meets UL-94V-0 standard with high flame retardancy, does not affect the coloring property, and improves the thermotropic yellowing problem.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a yellowing-resistant and flame-retardant polyamide composition and a preparation method thereof. Background technique [0002] Polyamide (PA) refers to a polymer containing amide groups (-[NHCO]-) in the main chain. Most polyamides are semi-crystalline polymers. The reason for the formation of crystal regions is the amide groups on the molecular chain. Being polar groups, these charged amide groups attract each other, causing the polymer chains to fold repeatedly to form crystals. But electrons are not shared equally between some atoms of the molecular chain, resulting in regions of the polymer chain that are slightly positively and slightly negatively charged. [0003] The polar nature of the amide groups in the polymer gives polyamides their excellent mechanical properties but is also their weakness. Water molecules are also polar, and water is ubiquito...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L25/06C08L67/02C08K13/04C08K7/14C08K5/092C08K5/20C08K3/34C08K3/38
CPCC08K2003/387C08K2201/003C08L77/06C08L2201/02C08L2201/08C08L2205/025C08L2205/035C08L25/06C08K13/04C08K7/14C08K5/092C08K5/20C08K3/346C08K3/38C08L67/02
Inventor 陈跃民陈原振林柏龄
Owner 江苏晋伦塑料科技有限公司
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