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Halogen-free fire retardation long glass fiber reinforced PET composite material and preparation method thereof

A composite material and long glass fiber technology, applied in the field of halogen-free flame retardant long glass fiber reinforced PET composite material and its preparation, can solve the problem of serious decomposition of halogen-free flame retardant, and achieve the effect of solving serious decomposition

Active Publication Date: 2014-06-04
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reinforced glass fiber of halogen-free flame-retardant PET is improved by continuous long glass fiber to obtain continuous long glass fiber-reinforced PET (LFTPET), the mechanical properties of halogen-free flame-retardant PET will be fully improved, and the performance of halogen-free flame-retardant PET can be realized. High performance, but in order to ensure the infiltration effect of PET on continuous long glass fibers in the production process of LFPTET, the melt temperature of PET is usually set very high (≥300°C), and the decomposition of halogen-free flame retardants is serious at high temperatures

Method used

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  • Halogen-free fire retardation long glass fiber reinforced PET composite material and preparation method thereof
  • Halogen-free fire retardation long glass fiber reinforced PET composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: Plasticize 15 kg of PET WK801 through a single-screw extruder with a length-to-diameter ratio of 20:1 and transport it to a high-temperature melt infiltration tank through a die. The temperature in the high-temperature melt infiltration tank is 320°C. And the length of the high temperature melt infiltration tank is 2m;

[0021] Step 2: Mix 57.0 kg of PET WK801, 2 kg of toughening agent EVA2825, 0.2 kg of phenolic heat stabilizer 1010, 0.3 kg of phosphite antioxidant 168, 0.2 kg of talcum powder, 0.3 kg of Surlyn 8920, and 10 kg of Klein The flame retardant OP 1311 is plasticized by a single-screw extruder with a length-to-diameter ratio of 20:1, and then transported to a low-temperature melt infiltration tank through a die. The temperature in the low-temperature melt infiltration tank is 275 ° C, and the low temperature The length of the melt infiltration tank is 1m;

[0022] Step 3: Pass 15 kg of continuous long glass fiber Tufrov 4585 produced by PPG through ...

Embodiment 2

[0026] Step 1: Plasticize 20 kg of PET WK821 through a single-screw extruder with an aspect ratio of 20:1 and transport it to a high-temperature melt infiltration tank through a die. The temperature in the high-temperature melt infiltration tank is set at 340°C , and the length of the high temperature melt infiltration tank is 2m;

[0027] Step 2: Mix 39 kg of PET WK821, 4 kg of toughening agent PTW, 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of phosphite antioxidant 627A, 0.5 kg of sodium benzoate, 0.5 kg of Aclyn 285, 15 kg of Klein Flame retardant OP 1312 is plasticized by a single-screw extruder with an aspect ratio of 20:1, and then transported to a low-temperature melt infiltration tank through a die. The temperature in the low-temperature melt infiltration tank is 280 ° C, and the low temperature The length of the melt infiltration tank is 1m;

[0028] Step 3: Pass 20 kg of continuous long glass fiber Tufrov 4585 produced by PPG through the high-temperature melt t...

Embodiment 3

[0032] Step 1: Plasticize 20 kg of PET CZ-318 through a single-screw extruder with a length-to-diameter ratio of 20:1 and transport it to a high-temperature melt infiltration tank through a die. The temperature in the high-temperature melt infiltration tank is 360 ℃, and the length of the high temperature melt infiltration tank is 2.5m;

[0033] The second step: 32 kg of PET CZ-318, 5 kg of toughening agent PTW, 0.8 kg of phenolic heat stabilizer 1010, 0.7 kg of phosphite antioxidant 627A, 0.7 kg of Surlyn 8920, 0.8 kg of Aclyn 285, 10 kg Klein flame retardant OP 1240, 5 kg of flame retardant MPP are plasticized by a single-screw extruder with a length-to-diameter ratio of 20:1, and then transported to a low-temperature melt infiltration tank through a die, and the low-temperature melt infiltration tank The temperature is set at 285°C, and the length of the low-temperature melt infiltration tank is 1.5m;

[0034] Step 3: Pass 25 kg of continuous long glass fiber Tufrov 4588 p...

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Abstract

The present invention discloses a halogen-free fire retardation long glass fiber reinforced PET composite material, which comprises, by weight, 40-72% of PET, 2-6% of a toughening agent, 10-20% of a halogen-free fire retardation agent, 0.5-2.0% of a thermal stabilizer, 0.5-2.0% of a special PET nucleating agent and 15-30% of long glass fibers, wherein the long glass fibers are special LFT alkali-free continuous long glass fibers for PET. The prepared material has characteristics of high fluidity, excellent heat resistance, high rigidity, high impact, high dimensional stability, excellent fire retardation and high CTI value, wherein the test results show that the tensile strength is more than or equal to 100 MPa, the flexural modulus is more than or equal to 6500 MPa, the notched impact strength is more than or equal to 15 kJ / m<2>, the heat distortion temperature (1.80 MPa) is more than or equal to 245 DEG C, the fire retardation grade achieves UL94 1.6mmV-0, and the CTI value is more than or equal to 500 V. In addition, the high temperature and low temperature double melt infiltration tank series connection technology is adopted to solve the high temperature decomposition disadvantage of the halogen-free fire retardation agent.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polymer composite material, in particular to a halogen-free flame-retardant long glass fiber reinforced PET composite material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polyethylene terephthalate (PET) products have excellent electrical properties and comprehensive application properties, and are widely used in electronic and electrical fields. With the increasing environmental awareness of the whole society, halogen-free flame retardant has become the mainstream of glass fiber reinforced PET technology development. However, glass fiber reinforced PET needs to add a lot of halogen free flame retardants to achieve V-0 halogen-free flame retardant, which will seriously reduce the mechanical properties of glass fiber reinforced PET materials, especially the notched impact strength. If the reinforced glass fiber of halogen-free flame-retardant PET is impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/04C08K7/14C08K3/34C08K5/098C08K5/5313C08K5/3492C08J5/04
Inventor 孙刚周英辉李国明程文超李欣李志平陈延安丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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