Light aging resisting and high-strength anti-flaming enhancement polybutylene terephthalate composition and preparation method thereof

A polybutylene terephthalate, anti-photoaging technology, applied in the field of polymer materials, can solve many problems such as preventing photodegradation, prolonging service life, maintaining strength and rigidity

Active Publication Date: 2008-04-30
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many domestic and foreign manufacturers of environmentally friendly flame-retardant reinforced PBT that resist light aging, there are not many manufacturers that produce products that have both excellent anti-light aging performance and excellent comprehensive mechanical properties.

Method used

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  • Light aging resisting and high-strength anti-flaming enhancement polybutylene terephthalate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1- example 3

[0022] Embodiment 1-Example 3 The formula of each raw material is as follows (parts by weight):

[0023]

[0024] Its preparation method is:

[0025] The first step. take each raw material by weight;

[0026] Step 2. Put the composite modifier, special composite additive and composite coupling agent into the high-speed mixer for 2-3 minutes and dry mix at a speed of 800 rpm;

[0027] The third step. Five kinds of the premix obtained in step 1, polybutylene terephthalate, main flame retardant, synergistic flame retardant, and glass fiber are added to the extruder through their respective precision metered feeders. Exit the machine, mix and disperse in the screw barrel through the combined screw, and melt extrude and granulate to obtain the product. Wherein the screw speed is 350rpm, and the aspect ratio of the twin-screw extruder is 40:1;

[0028] The temperature of each zone of the extruder barrel from the feeding port to the machine head is: the temperature of the first...

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Abstract

The invention relates to light weathering and high strength flame retardant reinforced polybutylece terephthalate compound. The invention is characterized in that the compound consists of polybutylece terephthalate, compound modifier, main fire retardant, auxiliary fire retardant, fiber glass, special compound accessory ingredient and compound coupling agent. The invention has a preparation method that the compound modifier, the special compound accessory ingredient and the compound coupling agent are put in a high-speed blender to be dryly mixed for two to three minutes, the pre-mixing matter obtained in the step one, the polybutylece terephthalate, the main fire retardant, the auxiliary fire retardant and the fiber glass are added into an extruding machine through respective exact metering feeders, and are mixed and dispersed in a threaded tube through a combined threaded rod, and the product is obtained through melting extrusion and granulation. The invention has the advantages of outstanding light weathering performance as well as outstanding comprehensive mechanical performance.

Description

technical field [0001] The invention relates to an anti-light aging, high-strength flame-retardant reinforced polybutylene terephthalate compound and a preparation method thereof, which can be used as materials for electrical shells, coil frames, electrical connectors, and auto parts, and belongs to high Molecular materials technology field. Background technique [0002] Polybutylene terephthalate, referred to as PBT, is polymerized by polycondensation reaction of terephthalic acid and butanediol. Its melting point is 225-235°C, and it is a crystalline material. The main modification methods of PBT include toughening, strengthening, flame retardant, blending modification and chemical chain extension. The flame-retardant modified PBT material is the most widely used, such as electrical housings, coil bobbins, electrical connectors, auto parts and so on. [0003] The light stability of the PBT material itself is good, but in some occasions of long-term outdoor use, the ordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03C08K7/14B29C47/38B29C47/92C08L23/08C08L63/00C08K5/29C08K3/22C08K5/5333B29C48/395B29C48/92
CPCB29C2947/9259B29C47/6087B29C2947/92704B29C47/0004B29C48/022B29C48/40B29C48/625B29C48/92B29C2948/9259B29C2948/92704
Inventor 陈伟苏妤陈大华李翰卿
Owner SHANGHAI KINGFA SCI & TECH
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