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Abrasion-resistant PBT composite material

A composite material, di-tert-butyl technology, applied in the field of wear-resistant PBT composite materials, can solve the problems of poor physical properties of PBT wear resistance, limit the influence of PBT, PBT strength, toughness, etc., and achieve improved physical properties and strong interface effects , good dispersion effect

Inactive Publication Date: 2019-04-09
任素飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PBT has the advantages of light weight, non-toxic, odorless, good chemical stability, insoluble in common solvents at room temperature, and low water absorption, but the wear resistance and some physical properties of pure PBT are poor, which limits the use of PBT in some Applications in special fields
[0003] In order to increase the application range of PBT and improve the physical properties of PBT, the current technology improves the performance of PBT by compounding, usually through the addition of additives, etc., but the addition of additives has a certain impact on the strength and toughness of PBT.

Method used

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  • Abrasion-resistant PBT composite material
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Weigh 70 parts of PBT, 1 part of PMMA, 8 parts of TiO 2 - g-PMMA, 0.15 parts of Irganox 168, 0.15 parts of Irganox 1010, 0.1 parts of zinc stearate were mixed in a high-speed mixer and stirred for 10 minutes to obtain a mixture.

[0032] The temperature of the high-speed mixer described therein is 70° C., and the rotation speed is 120 r / min.

[0033] 2) Put the mixed material into the hopper of the twin-screw extruder, melt and react, then extrude and granulate to obtain the PBT composite material. °C, the temperature in the second zone is 120°C, the temperature in the third zone is 130°C, the temperature in the fourth zone is 140°C, the temperature in the fifth zone is 140°C, the temperature in the sixth zone is 140°C, the temperature of the head is 130°C; the screw speed is 120r / min.

Embodiment 2

[0035] 1) Weigh 90 parts of PBT, 3 parts of PMMA, 16 parts of TiO 2 - g-PMMA, 0.35 parts of Irganox 1330, 0.35 parts of Irganox 1010, 0.15 parts of sodium stearate, 0.15 parts of zinc stearate were mixed in a high-speed mixer and stirred for 12 minutes to obtain a mixture.

[0036] The temperature of the high-speed mixer described therein is 120° C., and the rotation speed is 240 r / min.

[0037] 2) Put the mixed material into the hopper of the twin-screw extruder, undergo melting reaction, then extrude and granulate to obtain the PBT composite material, wherein the temperature in each zone of the twin-screw extruder and the screw speed are respectively: the temperature in the first zone is 180 ℃, the temperature in the second zone is 220 ℃, the temperature in the third zone is 230 ℃, the temperature in the fourth zone is 230 ℃, the temperature in the fifth zone is 230 ℃, the temperature in the sixth zone is 240 ℃, the temperature of the head is 200 ℃; the screw speed is 300r / m...

Embodiment 3

[0039] 1) Weigh 80 parts of PBT, 2 parts of PMMA, 12 parts of TiO 2 -g-PMMA, 0.5 part of Irganox 1330, 0.1 part of sodium stearate, 0.1 part of zinc stearate were mixed in a high-speed mixer and stirred for 11 minutes to obtain a mixture.

[0040] The temperature of the high-speed mixer described therein is 95° C., and the rotation speed is 180 r / min.

[0041] 2) Put the mixed material into the hopper of the twin-screw extruder, melt and react, then extrude and granulate to obtain the PBT composite material. °C, the temperature in the second zone is 170°C, the temperature in the third zone is 180°C, the temperature in the fourth zone is 185°C, the temperature in the fifth zone is 185°C, the temperature in the sixth zone is 190°C, the temperature of the head is 165°C; the screw speed is 210r / min.

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Abstract

The invention relates to an abrasion-resistant PBT composite material. The abrasion-resistant PBT composite material is prepared from the following components in parts by weight: 70-90 parts of PBT, 1-3 parts of PMMA, 8-16 parts of TiO2-g-PMMA, 0.3-0.7 part of an antioxidant and 0.1-0.3 part of a lubricant. According to the technical scheme, the addition of TiO2-g-PMMA can improve the mechanical property of the material for two reasons: (1)with small particle size, large specific surface area, good dispersibility, high surface activity, TiO2-g-PMMA can generate a strong interface effect when used for modifying PBT, thus effectively improving the physical properties of the material; and (2) TiO2-g-PMMA can change the crystallization behavior of PBT, can take a heterogeneous nucleation effect on PBT, thus effectively improving the physical properties of the material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a wear-resistant PBT composite material. Background technique [0002] Polybutylene terephthalate (PBT) is an important thermoplastic polymer widely used in household appliances, mechanical parts, office supplies and communication equipment and other fields. PBT has the advantages of light weight, non-toxic, odorless, good chemical stability, insoluble in common solvents at room temperature, and low water absorption, but the wear resistance and some physical properties of pure PBT are poor, which limits the use of PBT in some Applications in special fields. [0003] In order to increase the application range of PBT and improve the physical properties of PBT, the current technology improves the performance of PBT by compounding, usually through the addition of additives, etc., but the addition of additives has a certain impact on the strength and toughness of PBT. . ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L33/12C08L51/10C08K5/526C08K5/134C08K5/098C08K5/00C08F292/00C08F220/14
CPCC08F292/00C08L67/02C08L2205/03C08L2205/24C08L33/12C08L51/10C08K5/526C08K5/1345C08K5/098C08K5/00C08F220/14
Inventor 任素飞
Owner 任素飞
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