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In-situ modified halogen-free flame retardant thermoplastic resin composition and preparation method thereof

A thermoplastic resin and in-situ modification technology, which is applied in the composition of thermoplastic polyester and reactive halogen-free flame retardant and its preparation field, can solve the problems of poor compatibility and great influence on mechanical properties, and achieve thermal stability Low durability, excellent mechanical properties and flame retardant properties, simple operation

Inactive Publication Date: 2013-01-16
NINGBO ECOT SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the poor compatibility of the above-mentioned additive flame retardant, which has a great influence on the mechanical properties and the control problem of the polymerization process of the phosphorus-containing flame retardant monomer

Method used

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  • In-situ modified halogen-free flame retardant thermoplastic resin composition and preparation method thereof
  • In-situ modified halogen-free flame retardant thermoplastic resin composition and preparation method thereof
  • In-situ modified halogen-free flame retardant thermoplastic resin composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] According to the ratio shown in Table 2, PBT and D-MAH were weighed and vacuum-dried in a vacuum oven at 110°C for 8 hours. Mix and extrude. The obtained samples were made into standard specimens and subjected to UL94 and mechanical property tests. The results are shown in Table 2.

Embodiment 2

[0056] According to the ratio shown in Table 2, PBT and D-MAH were weighed and vacuum-dried in a vacuum oven at 110°C for 8 hours. Mix and extrude. The obtained samples were made into standard specimens and subjected to UL94 and mechanical property tests. The results are shown in Table 2.

Embodiment 3

[0058] According to the ratio shown in Table 2, PBT and D-MAH were weighed and vacuum-dried in a vacuum oven at 110°C for 8 hours. Mix and extrude. The obtained samples were made into standard specimens and subjected to UL94 and mechanical property tests. The results are shown in Table 2.

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Abstract

The invention discloses a halogen-free flame retardant thermoplastic engineering plastic composition prepared by in-situ modification, and a preparation method for the halogen-free flame retardant thermoplastic engineering plastic composition. According to the composition, polyester or polyamide is used as a base material, and reactive type halogen-free flame retardant, namely a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) composition is added, so that the halogen-free and flame retardant aims are fulfilled. The invention also discloses the preparation method for the halogen-free flame retardant engineering plastic composition. According to the method, the reactive type flame retardant and end groups or other functional groups of molecular chains of thermoplastic polymer are reacted in the melt blending process, so that the dispersibility and the compatibility between the flame retardant and a material are improved, the using amount of the flame retardant is reduced, the material is excellent in flame retardant property and high in heat resistance, and a large amount of toxic gas and fume can be prevented from being released in the combustion process.

Description

Technical field: [0001] The invention belongs to the field of polymer materials, and in particular relates to a halogen-free flame-retardant thermoplastic resin engineering plastic prepared by in-situ modification and a preparation method thereof, in particular to a composition of thermoplastic polyester and a reactive halogen-free flame retardant. its preparation method. Background technique: [0002] Thermoplastic resins, especially PBT, PET, polyamide (nylon), PC, etc., have excellent mechanical properties, electrical properties, and heat resistance, and are widely used in the fields of electronic appliances, automobile industry, mechanical instruments, and communication equipment. Most thermoplastic resins will burn violently after encountering an open flame, releasing a lot of heat, accompanied by a lot of smoke and toxic gases, causing huge losses and potential threats. Therefore, it is very necessary to study the flame retardant modification of thermoplastic resins t...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L77/06C08K7/14C08K5/5313C08J5/04
Inventor 彭伟伟张辉闪邬珩梁龙小翊
Owner NINGBO ECOT SCI & TECH
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