Halogen-free flame-retardant continuous long glass fiber reinforced polyamide 6 composite material and preparation method thereof

A composite material and polyamide technology, which is applied in the field of halogen-free flame-retardant long glass fiber reinforced polyamide 6 composite materials and its preparation, can solve the problems of high-temperature decomposition of halogen-free flame retardants, etc.

Active Publication Date: 2013-04-03
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the above prior art, the present invention provides a halogen-free flame-retardant continuous long glass fiber reinforced polyamide 6 composite material and its preparation method. The composite material is reinforced by continuous long glass fiber to make halogen-free Flame-retardant polyamide 6 is high-performance, and the existing preparation process is improved, which solves the disadvantage of high-temperature decomposition of halogen-free flame retardants in the soaking process

Method used

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  • Halogen-free flame-retardant continuous long glass fiber reinforced polyamide 6 composite material and preparation method thereof
  • Halogen-free flame-retardant continuous long glass fiber reinforced polyamide 6 composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Step 1: Plasticize 15 kg of polyamide 6 Volgamid24 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 300 ℃, and the length of the high temperature melt infiltration tank is 2m;

[0021] Step 2: Pass 57.5 kg of polyamide 6 Volgamid24, 2 kg of toughening agent 493D, 0.2 kg of phenolic heat stabilizer 1010, 0.3 kg of phosphite antioxidant 168, and 10 kg of Klein flame retardant OP 1312 through the long diameter Ratio 20:1 single-screw extruder plasticized and transported to the low-temperature melt infiltration tank through the die, the temperature in the low-temperature melt infiltration tank is 230°C, and the length of the low-temperature melt infiltration tank is 1m;

[0022] Step 3: Pass 15 kg of continuous long glass fiber Tufrov 4510 produced by PPG through the high-temperature melt tank in the first step...

Embodiment 2

[0026] Step 1: Plasticize 20 kg of polyamide 6 Volgamid25 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 set at 320°C, and the length of the high temperature melt infiltration tank is 2m;

[0027] Step 2: Pass 40 kg of polyamide 6 Volgamid25, 4 kg of toughening agent 560D, 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of phosphite antioxidant 627A, and 15 kg of Klein flame retardant OP 1311 through the long diameter Ratio 20:1 single-screw extruder plasticized and transported to the low-temperature melt infiltration tank through the die, the temperature in the low-temperature melt infiltration tank is 240°C, and the length of the low-temperature melt infiltration tank is 1m;

[0028] Step 3: Pass 20 kg of continuous long glass fiber Tufrov 4510 produced by PPG through the high-temperature melt tank in the firs...

Embodiment 3

[0033] The first step: 20 kg of polyamide 6 Volgamid27 is plasticized by a single-screw extruder with a length-to-diameter ratio of 20:1, and then transported to a high-temperature melt infiltration tank through a die. The temperature in the high-temperature melt infiltration tank is 340 ℃, and the length of the high temperature melt infiltration tank is 2.5m;

[0034] Step 2: Mix 33.5 kg of polyamide 6 Volgamid27, 5 kg of toughening agent Bondyram 7003, 0.8 kg of phenolic heat stabilizer 1010, 0.7 kg of phosphite antioxidant 627A, 10 kg of Klein flame retardant OP 1230 and 5 Kg of flame retardant MPP 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 set at 245°C, and the The length of the low temperature melt infiltration tank is 1.5m;

[0035] Step 3: Pass 25 kg of continuous long glass fiber Tufrov...

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Abstract

The invention discloses a halogen-free flame-retardant continuous long glass fiber reinforced polyamide 6 composite material, which consists of the following components in percentage by weight: 42-72.5 percent of polyamide 6, 2-6 percent of flexibilizer, 10-20 percent of halogen-free flame retardant, 0.5-2.0 percent of heat stabilizer and 15-30 percent of long glass fiber, wherein the relative viscosity of polyamide 6 is 2.0-3.0; and the long glass fiber is an LFT alkali-free continuous long glass fiber special for polyamide 6. The material prepared by the preparation method has high liquidity, excellent heat resistance, high rigidity, high impact, high dimensional stability, excellent flame retardant property and high CTI value; and due to the detection, the tensile strength is more than or equal to 120MPa, the flexural modulus is more than or equal to 6,500MPa, the notch impact strength is more than or equal to 20KJ / M<2>, the distortion temperature (1.80MPa) is more than or equal to 200 DEG C, the flame-retardant level reaches UL94 1.6mmV-0, and the CTI value is more than or equal to 500V; and moreover, by adoption of the high / low-temperature dual-melt infiltration tank series technology, the defect that the halogen-free flame retardant is decomposed at a high temperature is overcome.

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 polyamide 6 composite material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polyamide 6 products have excellent 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 polyamide 6 technology development. However, glass fiber reinforced polyamide 6 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 polyamide 6 materials, especially the notched impact strength. If the reinforced glass fiber of halogen-free flame-retardant polyamide 6 is improved by c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/04C08K7/14C08K5/5313C08K5/3492
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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