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Halogen-free and non-phosphorus flame retardance PBT (Polybutylece Terephthalate) resin and preparation method thereof

A PBT resin and flame retardant technology, which is applied in the field of halogen-free and phosphorus-free flame-retardant PBT resin and its preparation, can solve the problems of deteriorating physical and mechanical properties of PBT resin, wicking effect, and limiting the application range of MCA, etc., to achieve excellent flame retardancy Synergistic effect, excellent electrical insulation and mechanical properties, accelerated self-extinguishing effect

Inactive Publication Date: 2015-04-01
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for PBT resin materials, the addition of MCA not only deteriorates the physical and mechanical properties of PBT resin, but also has a wick effect, which slows down the melting and dripping of the material when it is burned, and can only achieve V2 or even HB flame retardant grades, which greatly limits The scope of application of MCA in PBT

Method used

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  • Halogen-free and non-phosphorus flame retardance PBT (Polybutylece Terephthalate) resin and preparation method thereof
  • Halogen-free and non-phosphorus flame retardance PBT (Polybutylece Terephthalate) resin and preparation method thereof
  • Halogen-free and non-phosphorus flame retardance PBT (Polybutylece Terephthalate) resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Referring to Table 1, a halogen-free and phosphorus-free flame-retardant PBT resin, in parts by weight, includes the following components:

[0038]

[0039]

[0040] The raw materials are weighed according to the weight ratio of each component, added to a high-speed mixer and mixed evenly; the mixture is placed in a twin-screw machine, melted and extruded, and granulated. Wherein, the screw length-to-diameter ratio of the twin-screw extruder is 28-44, and the process conditions are: the temperature in the first zone is 210-230°C, the temperature in the second zone is 220-240°C, the temperature in the third zone is 230-250°C, and the temperature in the fourth zone is 220°C. ~240°C, head temperature 230~260°C, barrel residence time 0.5~2 minutes, melt pressure 10~20MPa.

Embodiment 2

[0042] A halogen-free, phosphorus-free, flame-retardant PBT resin whose component types are the same as in Example 1, the difference being that the proportioning ratio of the components of the halogen-free, phosphorus-free, flame-retardant PBT resin of this example is different from that of Example 1 , see column 3 of Table 1 for details.

Embodiment 3

[0044] A halogen-free, phosphorus-free, flame-retardant PBT resin whose component types are the same as in Example 1, the difference being that the proportioning ratio of the components of the halogen-free, phosphorus-free, flame-retardant PBT resin of this example is different from that of Example 1 , see column 4 of Table 1 for details.

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Abstract

The invention provides halogen-free and non-phosphorus flame retardance PBT (Polybutylece Terephthalate) resin. The halogen-free and non-phosphorus flame retardance PBT resin is prepared from the following components: 70 to 95 parts of PBT, 1 to 10 parts of flexibilizer, 5 to 25 parts of halogen-free flame retardant, 0.5 to 2 parts of synergistic flame retardant, and 0.1 to 0.5 part of initiator. The invention also discloses a preparation method of the resin above. According to the halogen-free and non-phosphorus flame retardance PBT resin and the preparation method, the component ratio is optimized; all components fuse mutually and work together to enable the flame retardance of the halogen-free and non-phosphorus flame retardance PBT resin to reach UL94 V-0 level which is similar to the flame retardance of halogen-containing flame retardance products; the halogen-free and non-phosphorus flame retardance PBT resin is environmentally friendly, safe, and outstanding in electric insulation performance and mechanical performance; meanwhile, the raw materials and the preparation process are simple, the cost is decreased; the halogen-free and non-phosphorus flame retardance PBT resin can be widely applied to preparation of fittings of household appliance, electronic, automobile and other products.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free and phosphorus-free flame-retardant PBT resin and a preparation method thereof. Background technique [0002] Flame retardant PBT resin not only has high rigidity, high strength, excellent dimensional accuracy, stability and low warpage, good chemical resistance, physical properties that are minimally affected by water absorption, good surface quality, and easy molding, it is widely used in All kinds of electronic and electrical products and auto parts. At present, nearly 95% of the flame retardants used in flame-retardant PBT are halogen-containing flame retardants. Due to the high efficiency and small amount of bromine-containing flame retardants, the impact on the performance of the material is small, and the price is moderate. Flame retardants can match, so 70% to 80% of my country's electrical and electronic products for export use such f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/00C08L29/04C08K5/3492C08K5/01
Inventor 徐东杨海灵
Owner ANHUI KEJU NEW MATERIALS
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