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Continuous long glass fiber reinforced SMA composite material for automobile sunroof and preparation method thereof

A technology for automobile sunroof and composite material, which is applied in the field of continuous long glass fiber reinforced SMA composite material for automobile sunroof and its preparation, can solve the problem of low mechanical strength of chopped glass fiber reinforced SMA, and achieve high rigidity and high fluidity. , excellent rigidity effect

Active Publication Date: 2016-01-20
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

[0003] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a continuous long glass fiber reinforced SMA composite material for automobile skylights and a preparation method thereof, which overcomes the shortcoming of low mechanical strength of chopped glass fiber reinforced SMA , suitable for automotive sunroof frame materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The first step: 79.5 kg of SMA218, 0.2 kg of phenolic heat stabilizer 1010, and 0.3 kg of phosphite antioxidant 168 are plasticized by a 20:1 single screw extruder with a length-to-diameter ratio of 20:1, and then transported to a high-temperature LFT dedicated through a die Melt infiltration die head, the temperature in the die head is set at 280℃;

[0019] Step 2: Pull 20 kg of continuous long glass fiber Tufrov 4588 into a high-temperature LFT special melt infiltration die at a speed of 20m / min. The length of the high-temperature melt infiltration tank is 3m; pull and infiltrate, and finally cut into LFT special pelletizer With 12mm long particles, composite material A is obtained, and its properties are shown in Table 1:

[0020] Table 1 Properties of composite material A

[0021] Performance

Embodiment 2

[0023] The first step: 69 kg of SMA214, 0.5 kg of phenolic heat stabilizer 1010, and 0.5 kg of phosphite antioxidant 627A are plasticized by a single screw extruder with a length to diameter ratio of 20:1, and then transported to a high temperature LFT dedicated through a die Melt infiltrates the die, the temperature in the die is set at 300℃;

[0024] The second step: 30 kg of continuous long glass fiber Tufrov 4588 is drawn into the high temperature LFT special melt infiltration die at a speed of 40m / min. The length of the high temperature melt infiltration tank is 3m; it is drawn and infiltrated, and finally cut into pieces by the LFT special pelletizer 12mm long particles to obtain composite material B, its performance is shown in Table 2:

[0025] Table 2 Properties of composite material B

[0026] Performance

Embodiment 3

[0028] The first step: 58.5 kg of SMAM14, 0.7 kg of phenolic heat stabilizer 1010, and 0.8 kg of thioester antioxidant 412S are plasticized by a 20:1 single screw extruder with a length to diameter ratio of 20:1, and then transported to a high temperature LFT dedicated through a die Melt infiltrates the die, the temperature in the die is set at 330℃;

[0029] Step 2: Pull 40 kilograms of continuous long glass fiber Tufrov 4599 into a high temperature LFT special melt infiltration die at a speed of 60m / min. The length of the high temperature melt infiltration tank is 3m; pull and infiltrate, and finally cut into LFT special pelletizer With 12mm long particles, composite material C is obtained, and its performance is shown in Table 3:

[0030] Table 3 Properties of composite material C

[0031] Performance

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Abstract

The invention discloses a continuous long fiberglass-reinforced SMA (styrene maleic anhydride) composite material for an automobile skylight. The composite material consists of the following components in percentage by weight: 48 to 79.5 percent of SMA, 0.5 to 2.0 percent of heat stabilizer and 20.0 to 50.0 percent of long fiberglass, wherein the SMA is an SMA random copolymer with maleic anhydride content of 5 to 25 molar percent; the long fiberglass is alkali-free continuous long fiberglass. The composite material has high rigidity, high heat resistance, high dimensional stability, low warpage, high flowability, aging resistance and low odor, and is detected to have a spiral flow length (270 DEG C) of more than or equal to 800mm, tensile strength of more than or equal to 100MPa, tensile modulus of more than or equal to 5,500MPa, notch impact strength of more than or equal to 15KJ / m<2>, heat distortion temperature (1.80MPa) of more than or equal to 140 DEG C, retention tensile strength of more than or equal to 95 percent after thermo-oxidative aging (120 DEG C, 500hr) and odor level (80 DEG C, 2hr) of lower than or equal to 3.5, the requirements for high rigidity, dimensional stability and low odor of an automobile skylight frame can be met, and high performance of an SMA material is ensured.

Description

Technical field [0001] The invention relates to a glass fiber reinforced SMA composite material, in particular to a continuous long glass fiber reinforced SMA composite material for an automobile sunroof and a preparation method thereof. Background technique [0002] With the development of the automobile industry, glass fiber reinforced styrene-maleic anhydride copolymer (SMA) composite materials have excellent rigidity, heat resistance, dimensional stability, low warpage, high fluidity, aging resistance and low Odor has gradually been widely used in functional structural parts of automotive interiors. The automobile sunroof frame carries all the weight of the automobile sunroof system. It is an important functional part of the sunroof system and also belongs to the interior parts, so it has very high requirements for the smell level. Glass fiber reinforced SMA material is an ideal skylight frame material due to its low odor, low warpage, aging resistance and dimensional stabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L35/06C08K7/14B29B15/14
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