Novel glass fiber enhanced PBT (Polybutylene Terephthalate) composition

A technology of composition and glass fiber, which is applied in the field of polymer modification, can solve problems such as limiting the scope of application, and achieve the effect of enhancing interface bonding force and improving impact strength

Inactive Publication Date: 2018-05-04
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in some aspects of modified PBT materials. For example, the rigidity of reinforced PBT products has been significantly improved through the reinforcement of glass fibers. However, with the trend of thinner walls of products, the requirements for materials are also increasing. High, its rigidity, toughness and other performance defects are also exposed, which limits its application range to a certain extent
[0003] Usually, it is a conventional method to increase the rigidity or toughness of the material by increasing the glass fiber content or toughener content of the PBT material, but it is difficult to improve the rigidity and toughness of the material at the same time through a modification method to obtain a rigidity. Tough and Balanced Material

Method used

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  • Novel glass fiber enhanced PBT (Polybutylene Terephthalate) composition
  • Novel glass fiber enhanced PBT (Polybutylene Terephthalate) composition
  • Novel glass fiber enhanced PBT (Polybutylene Terephthalate) composition

Examples

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Effect test

Embodiment 1

[0026] A novel glass fiber reinforced PBT composition, the composition is made of raw materials comprising the following parts by weight: 85 parts of PBT, 10 parts of glass fiber, 3 parts of acrylic acid, 4 parts of butyl acrylate, 1.5 parts of zinc oxide, 0.01 part of DCP , 0.2 parts of antioxidant, 0.5 parts of lubricant.

[0027] The preparation method of the novel glass fiber-reinforced PBT composition comprises the following steps: first put the raw materials into a high-speed mixer and mix them for 3 minutes, then put them into a twin-screw extruder, and control the temperature at 200°C- 300°C, extrude and granulate.

Embodiment 2

[0029] A novel glass fiber reinforced PBT composition, the composition is made of raw materials comprising the following parts by weight: 70 parts of PBT, 20 parts of glass fiber, 4 parts of acrylic acid, 5 parts of butyl acrylate, 3 parts of zinc oxide, and 0.02 part of DCP , 0.2 parts of antioxidant, 0.5 parts of lubricant.

[0030] The preparation method of the novel glass fiber-reinforced PBT composition comprises the following steps: first put the raw materials into a high-speed mixer and mix them for 3 minutes, then put them into a twin-screw extruder, and control the temperature at 200°C- 300°C, extrude and granulate.

Embodiment 3

[0032] A novel glass fiber reinforced PBT composition, the composition is made of raw materials comprising the following parts by weight: 55 parts of PBT, 30 parts of glass fiber, 6 parts of acrylic acid, 8 parts of butyl acrylate, 4 parts of zinc oxide, and 0.03 part of DCP , 0.2 parts of antioxidant, 0.5 parts of lubricant.

[0033] The preparation method of the novel glass fiber-reinforced PBT composition comprises the following steps: first put the raw materials into a high-speed mixer and mix them for 3 minutes, then put them into a twin-screw extruder, and control the temperature at 200°C- 300°C, extrude and granulate.

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PUM

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Abstract

The invention provides a novel glass fiber enhanced PBT (Polybutylene Terephthalate) composition. The composition is prepared from the following raw materials in parts by weight: 45 to 90 parts of PBT, 5 to 40 parts of glass fiber, 1 to 5 parts of acrylic acid, 3 to 15 parts of acrylate, 1 to 5 parts of metal oxide and 0.01 to 0.5 part of a crosslinking agent. According to the novel glass fiber enhanced PBT composition provided by the invention, the acrylic acid is easily polymerized in situ in double screw rods to form a polymer elastomer under the action of the crosslinking agent; meanwhile,a monomer or an oligomer which is not sufficiently polymerized can be pumped out through a double-vacuum device.

Description

technical field [0001] The invention belongs to the field of polymer modification, and in particular relates to a novel glass fiber reinforced PBT composition. Background technique [0002] Polybutylene terephthalate (PBT) is a semi-crystalline engineering plastic. After modified by glass fiber reinforcement, the mechanical properties, electrical properties, heat resistance and dimensional stability of PBT materials have been improved. Used in automobiles, electronics, electrical appliances and other industries. However, there are still deficiencies in some aspects of modified PBT materials. For example, the rigidity of reinforced PBT products has been significantly improved through the reinforcement of glass fibers. However, with the trend of thinner walls of products, the requirements for materials are also increasing. High, its rigidity, toughness and other performance defects are also exposed, which limits its application range to a certain extent. [0003] Usually, it...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/06C08L51/08C08K13/04C08K7/14C08K3/22C08K5/14
CPCC08L67/02C08K2003/222C08K2003/2227C08K2003/2275C08K2003/2296C08L51/06C08L51/08C08K13/04C08K7/14C08K3/22C08K5/14
Inventor 陈勇文张现军陶四平艾军伟佟伟李明昆岑茵
Owner TIANJIN KINGFA NEW MATERIAL
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