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Bio-based PA56T and PA56 composite material and preparation method thereof

A composite material, bio-based technology, applied in the field of bio-based PA56T and PA56 composite materials and their preparation, can solve the problems of poor flame retardant performance, inability to meet electrical and electronic applications, etc., achieve good mechanical properties, good flame retardant properties, increase The effect of flame retardant properties

Inactive Publication Date: 2020-03-24
广东泰塑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the current bio-based PA56 has good toughness, its flame retardancy is poor, which cannot meet the applications in the fields of electronics and electricity.

Method used

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  • Bio-based PA56T and PA56 composite material and preparation method thereof
  • Bio-based PA56T and PA56 composite material and preparation method thereof
  • Bio-based PA56T and PA56 composite material and preparation method thereof

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preparation example Construction

[0037] In one implementation method, the preparation method of PA56T of the present invention includes the following steps: mixing the pentamethylenediamine, adipic acid and the second component acid, adding sodium hypophosphite and water, Reaction at low temperature for 3-5 hours, drying to obtain prepolymer, and solid-phase viscosity increasing at 200-250°C for 18-24 hours under vacuum conditions to obtain PA56T.

[0038] Further preferably, the sodium hypophosphite of the present invention accounts for 0.05-0.15 wt% of the total weight of the pentamethylenediamine, adipic acid and the second component acid.

[0039] Further preferably, the relative viscosity of the PA56 of the present invention at 25°C and 98% concentrated sulfuric acid is 2 to 3.5; further, the relative viscosity of the PA56 of the present invention at 25°C and 98% concentrated sulfuric acid is 2 to 3.5 Further, the relative viscosity of the PA56 of the present invention at 25° C. in 98% concentrated sulfu...

Embodiment 1～12

[0145] Embodiments 1-12 provide a preparation method of bio-based PA56T and PA56 composite materials, comprising the following steps:

[0146] Main ingredient mixing: Mix PA56T and PA56 in a high-speed mixer at a speed of 250r / min for 3 minutes to obtain the main ingredient;

[0147] Mixing of auxiliary materials: mixing the flame retardant, flame retardant synergist and auxiliary agent in a high-speed mixer, the rotating speed is 450r / min, and the time is 4min to obtain auxiliary materials;

[0148] Extrusion: The main material is added to the twin-screw extruder through the main feeding port of the twin-screw extruder, the auxiliary materials are added through the first side feeding port of the twin-screw extruder, and the glass fiber is added through the second side of the twin-screw extruder. The two-side feeding port is added, the length-to-diameter ratio of the screw of the twin-screw extruder is 1:40, the screw speed is 400r / min, and the temperature of each zone from th...

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Abstract

The invention relates to the technical field of engineering plastics, and in particular, relates to a bio-based PA56T and PA56 composite material and a preparation method thereof. The composite material comprises the preparation raw materials in parts by weight: 5-70 parts of PA, 5-60 parts of glass fibers, 5-30 parts of a flame retardant, 1-10 parts of a flame retardant synergist and 1-10 parts of auxiliary agents, wherein the PA is PA56T and PA56 in a weight ratio of (1-4):(1-4). The invention provides the bio-based PA56T and PA56 composite material. Through compounding of the prepared PA56Tand PA56, the prepared composite material has good mechanical properties and flame retardancy, the flame retardancy, toughness and high-temperature stability of the composite material can be furtherimproved by controlling the varieties of the flame retardant and the glass fibers and the combined action of the auxiliary agents and the like, and the composite material can be applied to the fieldsof electrical and electronic equipment, automobile parts, office supplies, home supplies and the like.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, more specifically, the invention relates to a bio-based PA56T and PA56 composite material and a preparation method thereof. Background technique [0002] PA (polyamide) has good comprehensive performance, higher specific strength than metal, good mechanical properties, heat resistance, wear resistance, chemical resistance, flame retardancy and self-lubrication, and is easy to process, friction factor Low, suitable for glass fiber and other materials to be filled and reinforced, widely used in electrical and electronic, automotive parts, office supplies, household products, etc. Among them, bio-based PA is prepared by biological methods, which not only saves resources, but also reduces oil consumption. use; and the raw materials can be regenerated, some of them can be degraded, and the recycling process can reduce environmental pollution and improve environmental benefits. [0003] B...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K9/06C08K7/14C08K3/02C08K5/3492C08K3/22C08K13/06
CPCC08K2003/026C08L77/06C08L2201/02C08L2201/08C08L2205/025C08L2205/03C08K9/06C08K7/14C08K3/02C08K5/34924C08K3/2279C08K13/06
Inventor 王智学段锦华黄常春汪绍军曹理朝曾昭礼李军桦苏胜培
Owner 广东泰塑新材料科技有限公司