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Halogen-free flame retardant thermoplastic polyester resin composition

A thermoplastic polyester and resin composition technology, applied in the field of fiber-reinforced halogen-free flame-retardant thermoplastic polyester resin composition, can solve the problem of reducing the mechanical properties of PBT or PET composites, low tensile strength and bending strength, and reducing the composition Mechanical properties and other issues, to achieve high flame retardancy, simple operation, and improve the effect of mechanical properties

Inactive Publication Date: 2010-03-31
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyplastics' invention patent CN1165579C discloses a compound flame retardant PBT or PET of phosphinate and nitrogen-based flame retardant, but on the one hand, the price of phosphinate is relatively expensive, and adding phosphinate will greatly reduce the cost of PBT or PET. The mechanical properties of the composite. On the other hand, our research also shows that phosphinate is a catalyst for the transesterification reaction. Adding a small amount of phosphinate will greatly reduce the mechanical properties of the system using different thermoplastic polyester mixtures.
The patent CN1282696C of U.S. General Corporation uses phosphoric acid ester and nitrogen-based flame retardant to compound flame-retardant thermoplastic polyester resin, but the ratio of the amount of phosphoric acid ester used in it to nitrogen-based flame retardant is greater than 1, so that the tensile strength and flexural strength of the obtained material very low intensity
Japan's Toray Corporation patent CN100360595C discloses a thermoplastic polyester resin composition composed of phosphorus-based and nitrogen-based flame retardants, and introduces vinyl resin and alkaline earth metal compounds into the composition to improve the penetration resistance of the composition excellent performance and hydrolysis resistance caused by phosphate esters, but this system requires a large amount of flame retardants, which reduces the mechanical properties of the composition

Method used

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  • Halogen-free flame retardant thermoplastic polyester resin composition
  • Halogen-free flame retardant thermoplastic polyester resin composition
  • Halogen-free flame retardant thermoplastic polyester resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Weigh thermoplastic polyester resin PBT, phosphoric acid ester PX200, melamine cyanurate MC4000 and flame retardant synergistic enhancer mica respectively according to the ratio shown in Table 2, and pre-mix evenly with a high-speed mixing and stirring device at room temperature. The hopper, the chopped glass fiber ECS303H is quantitatively transported to the TEX30α co-rotating twin-screw extruder (made by Japan Steel) through the side feeding device for melt extrusion, the extrusion temperature is 250 ° C, the speed is 200 rpm, and the extrusion After being cooled in a water tank, the pellets were cut into pellets with a length of about 3 mm. After the pellets were air-dried at 120°C for 4 hours, they were injected into standard splines with a NEX1000 injection molding machine (manufactured by Nissei Corporation of Japan), and subjected to UL94 and mechanical tests. The measurement of performance, its result is shown in table 2.

Embodiment 2

[0103] The talcum powder is surface-treated with silane coupling agent KH560 first, and the thermoplastic polyester resin PBT, melamine cyanurate MC4000 and surface-treated talcum powder are weighed according to the ratio shown in Table 2, and mixed and stirred at a high speed at room temperature The device is pre-mixed evenly, the mixed material is from the main hopper, the chopped glass fiber ECS303H passes through the side feeding device, and at the same time, the phosphate ester RDP and BDP are quantitatively transported to the TEX30α co-rotating twin-screw extruder (made in Japan) by a special liquid feeding device Steel) for melt extrusion, the extrusion temperature is 230 ° C, the rotation speed is 200 rpm, the extruded strands are cooled in a water tank, and then cut into pellets with a length of about 3 mm by a pelletizer. The pellets are air-dried at 120 ° C for 4 Hours later, use NEX1000 injection molding machine (produced by Nissei Co., Ltd., Japan) to inject into a...

Embodiment 3

[0105] Weigh thermoplastic polyester resin PBT, phosphate ester PX200, melamine cyanurate MC4000, flame retardant synergistic enhancer glass flakes and PTFE respectively according to the ratio shown in Table 2, pre-mix evenly with a high-speed mixing and stirring device at room temperature, and mix From the main hopper, the chopped basalt fiber CBF13-6 is quantitatively transported to the TEX30α co-rotating twin-screw extruder (made by Japan Steel) through the side feeding device for melt extrusion. The extrusion temperature is 250°C and the rotation speed is 200rpm. The extruded strands are cooled in a water tank and then cut into pellets with a length of about 3mm by a pelletizer. After the pellets are air-dried at 120°C for 4 hours, they are injection molded into standard splines with a NEX1000 injection molding machine (manufactured by Nissei Corporation of Japan). , for the determination of UL94 and mechanical properties, the results are shown in Table 2.

[0106] Compara...

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PUM

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Abstract

The invention discloses a halogen-free flame retardant thermoplastic polyester resin composition which is characterized by mainly comprising the following components in percentage by weight: 20-50 percent of thermoplastic polyester resin, 0-10 percent of styrol copolymer, 3-20 percent of phosphoester flame retardant agent, 5-25 percent of tripolycyanamide cyanurate, 1-20 percent of flame retardantefficiency reinforcing agent and 5-40 percent of reinforced fiber. Because the flame retardant efficiency reinforcing agent in a lamellar structure is added in the invention, the dosage of the flameretardant agent for meeting the requirement of high flame retardant performance is reduced greatly, the mechanical performance of the thermoplastic polyester resin composition is improved; in addition, the halogen-free flame retardant thermoplastic polyester resin composition is different from a composition containing a halogen system flame retardant agent, can not release a plurality of poisonousgases and smoke in the burning process and can not generate a strong cancerogenic substance. The invention has simple method operation and environmental-friendly prepared composition, and finished products moulded by the composition can be widely used as components of electrical and electronic equipment, household equipment, office automation equipment, an automobiles and mechanical equipment.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a fiber-reinforced halogen-free flame-retardant thermoplastic polyester resin composition. Background technique [0002] Thermoplastic polyester resins such as polybutylene terephthalate (PBT), polytrimethylene terephthalate (PPT) and polyethylene terephthalate (PET) have excellent mechanical and electrical properties , especially the excellent formability of polybutylene terephthalate, is widely used in the fields of electrical and electronic equipment, household equipment, office automation equipment, automobiles and mechanical equipment. [0003] In real life, years of research have shown that the use of flame-retardant polymer materials is one of the most effective measures to prevent and reduce fires. Ordinary thermoplastic polyester materials and fiber-reinforced thermoplastic polyester composite materials are flammable materials and cannot be used in component...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08K13/04C08K7/00C08K5/521C08K5/3492C08K7/02
Inventor 赵春贵胡锡龙左传超潘跃亭
Owner TORAY IND INC
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