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
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Method used

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  • Abrasion-resistant PBT composite material
  • Abrasion-resistant PBT composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] 1) Weigh 70 parts of PBT, 1 part of PMMA, 8 parts of TiO 2 -g-PMMA, 0.15 part of Irganox168, 0.15 part of Irganox1010, 0.1 part of zinc stearate are mixed in a high-speed mixer and stirred for 10 minutes to obtain a mixture.

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

[0033] 2) Put the mixture into the hopper of the twin-screw extruder, undergo melting reaction, then extrude and pelletize to obtain the PBT composite material. The temperature of each zone of the twin-screw extruder and the screw speed are respectively: a zone temperature of 120 ℃, the second zone temperature is 120°C, the third zone temperature is 130°C, the fourth zone temperature is 140°C, the fifth zone temperature is 140°C, the sixth zone temperature is 140°C, the head temperature is 130°C; the screw speed is 120r / min.

Example Embodiment

[0034] Example 2

[0035] 1) Weigh 90 parts of PBT, 3 parts of PMMA, 16 parts of TiO 2 -g-PMMA, 0.35 parts Irganox1330, 0.35 parts Irganox1010, 0.15 parts sodium stearate, 0.15 parts zinc stearate are mixed in a high-speed mixer and stirred for 12 minutes to obtain a mixture.

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

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

Example Embodiment

[0038] Example 3

[0039] 1) Weigh 80 parts of PBT, 2 parts of PMMA, 12 parts of TiO 2 -g-PMMA, 0.5 part of Irganox1330, 0.1 part of sodium stearate, 0.1 part of zinc stearate are mixed in a high-speed mixer and stirred for 11 minutes to obtain a mixture.

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

[0041] 2) Put the mixture into the hopper of the twin-screw extruder, undergo melting reaction, then extrude and pelletize to obtain the PBT composite material. The temperature of each zone of the twin-screw extruder and the screw speed are respectively: a zone temperature of 150 ℃, the second zone temperature is 170℃, the third zone temperature is 180℃, the fourth zone temperature is 185℃, the fifth zone temperature is 185℃, the sixth zone temperature is 190℃, the head temperature is 165℃; 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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