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Micro-crystal muscovite/polybutylene terephthalate composite material

A polybutylene terephthalate and microcrystalline muscovite technology, which is applied in the field of polymer materials, can solve the problems of large molding shrinkage, low thermal deformation temperature, and small improvement range, and achieves low shrinkage and thermal High deformation temperature and good heat resistance

Inactive Publication Date: 2013-01-16
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the molding shrinkage rate is large and the heat distortion temperature is low
Talc powder can increase the heat distortion temperature of polybutylene terephthalate and reduce its shrinkage, but the improvement is small; ordinary muscovite can better improve the thermal deformation temperature of polybutylene terephthalate than talcum powder. Heat distortion temperature, reduce its shrinkage, but due to the low whiteness of ordinary muscovite, the resulting parts are gray and have low gloss

Method used

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  • Micro-crystal muscovite/polybutylene terephthalate composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 100 parts of PBT, 10 parts of microcrystalline muscovite, 2 parts of anti-1010, 2 parts of anti-168, 5 parts of POE-g-MAH, and 1 part of lubricant silicone oil and mix them in a high-speed mixer for 3 minutes, and mix the uniform material Extrude and granulate in a twin-screw extruder.

[0030] The temperature setting of the extruder is: 200°C in zone I, 220°C in zone II, 230°C in zone III, 240°C in zone IV, 245°C in zone V, 250°C in zone VI, and 250°C at the head. After the material is extruded, it is cooled by water, Cut into pellets to obtain the product of the present invention, and the performance test results are shown in Table 2.

[0031]

Embodiment 2

[0040] Weigh 100 parts of PBT, 30 parts of microcrystalline muscovite, 2 parts of anti-1098, 2 parts of anti-168, 10 parts of POE-g-MAH, 3 parts of lubricant stearic acid, and 3 parts of silane coupling agent KH550 in a high-speed mixer Mix in the medium for 3 minutes, and extrude and granulate the uniformly mixed material in a twin-screw extruder.

[0041] The temperature setting of the extruder is: 200°C in zone I, 220°C in zone II, 230°C in zone III, 240°C in zone IV, 245°C in zone V, 250°C in zone VI, and 250°C at the head. After the material is extruded, it is cooled by water, Cut into pellets to obtain the product of the present invention, and the performance test results are shown in Table 2.

[0042]

Embodiment 3

[0052] Weigh 100 parts of PBT, 60 parts of microcrystalline muscovite, 3 parts of anti-1010, 3 parts of anti-1098, 15 parts of EPDM rubber, 3 parts of lubricant liquid paraffin, 6 parts of silane coupling agent KH550 in a high-speed mixer Mix for 3 minutes, and extrude and granulate the homogeneously mixed material in a twin-screw extruder.

[0053] The temperature setting of the extruder is: 200°C in zone I, 220°C in zone II, 230°C in zone III, 240°C in zone IV, 245°C in zone V, 250°C in zone VI, and 250°C at the head. After the material is extruded, it is cooled by water, Cut into pellets to obtain the product of the present invention, and the performance test results are shown in Table 2.

[0054]

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Abstract

The invention belongs to the technical field of high-polymer materials, and relates to a micro-crystal muscovite / polybutylene terephthalate composite material and a preparation method thereof. The composite material comprises, by weight, 100 parts of polybutylene terephthalate, 1-100 parts of micro-crystal muscovite and 0-50 parts of additives. Compared with a common crystal muscovite / polybutylene terephthalate composite material, the micro-crystal muscovite / polybutylene terephthalate composite material has better tensile property, bending property and impact property, lower shrinkage percentage, lower cost and higher glossiness. Compared with a talcum powder / polybutylene terephthalate composite material, the micro-crystal muscovite / polybutylene terephthalate composite material has higher thermal deformation temperature, high thermal resistance and lower shrinkage percentage.

Description

[0001] technical field [0002] The invention belongs to the technical field of polymer materials, and in particular relates to a microcrystalline muscovite / polybutylene terephthalate composite material. [0003] Background technique [0004] Polybutylene terephthalate is a widely used thermoplastic engineering plastic, which has excellent heat resistance, fatigue resistance, toughness, good self-lubricating performance, low friction coefficient, and can still maintain better performance. The disadvantage is that the molding shrinkage rate is large and the heat distortion temperature is low. Talc powder can increase the heat distortion temperature of polybutylene terephthalate and reduce its shrinkage, but the improvement is small; ordinary muscovite can better improve the thermal deformation temperature of polybutylene terephthalate than talcum powder. The heat distortion temperature reduces its shrinkage rate, but due to the low whiteness of ordinary muscovite, the resu...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/02C08K3/34B29B9/06B29C47/92B29C48/92
Inventor 杨桂生程伟孙利明
Owner HEFEI GENIUS NEW MATERIALS
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