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Glass fiber reinforced PBT material and preparation method thereof

A glass fiber and PBT resin technology, applied in the field of glass fiber reinforced PBT materials, can solve the problems of large molding shrinkage, low water absorption, low impact strength, etc.

Pending Publication Date: 2021-05-11
江阴爱科森博顿聚合体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polybutylene terephthalate (PBT) is a milky white translucent to opaque, crystalline thermoplastic polymer made by the polymerization of 1.4-butanediol and terephthalic acid or terephthalate through a mixing process. Ester resin is a semi-crystalline polymer with excellent performance. It has the characteristics of high strength, good electrical properties, stable size, good heat resistance, low water absorption and easy molding and processing. It is widely used in automobiles, electronic appliances and machinery manufacturing. industry, but PBT has disadvantages such as low notched impact strength and large molding shrinkage, which limit the wider application of PBT resin to a certain extent
Glass fiber can strengthen PBT, improve tensile strength, bending strength, and heat distortion temperature, but the anisotropy of glass fiber makes PBT resin not well compatible with glass fiber, and there is a problem of unstable after-shrinkage range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The invention is a glass fiber reinforced PBT material, which comprises the following raw materials in parts by weight: 65 parts of PBT resin with a viscosity of 1.2-1.25, 25 parts of glass fiber, 15 parts of PMMA, 1.5 parts of clay, and a kinematic viscosity of 25mm 2 7 parts of paraffin oil per s, 0.8 parts of antioxidant, anatase TiO with a particle size of 0.25-0.3um 2 2 parts, 0.03 parts of fluorescent whitening agent.

[0020] The antioxidant is composed of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is 1:1.5.

[0021] The preparation method of above-mentioned glass fiber reinforced PBT material, comprises the following steps:

[0022] S1: Add PBT resin and PMMA resin to the mixer and mix evenly;

[0023] S2: Put the glass fiber, clay, antioxidant, anti-hydrolysis agent, and whitening agent into a high-speed mixer and mix evenly;

[0024] S3: Put the mixed materials obtained in step S1 and step S2 into the we...

Embodiment 2

[0026] The difference between embodiment 2 and embodiment 1 is that a glass fiber reinforced PBT material includes raw materials according to the following parts by weight: 60 parts of PBT resin with a viscosity of 1.2-1.25, 10 parts of glass fibers, 10 parts of PMMA, and 0.5 parts of clay , kinematic viscosity is 15mm 2 7 parts of paraffin oil per s, 0.5 parts of antioxidant, anatase TiO with a particle size of 0.25-0.3um 2 0.1 part, 0.01 part of fluorescent whitening agent.

Embodiment 3

[0028] The difference between embodiment 3 and embodiment 1 is that a glass fiber reinforced PBT material includes raw materials according to the following parts by weight: 70 parts of PBT resin with a viscosity of 1.2-1.25, 30 parts of glass fibers, 20 parts of PMMA, and 2 parts of clay , kinematic viscosity is 20mm 2 8 parts of paraffin oil per s, 1 part of antioxidant, anatase TiO with a particle size of 0.25-0.3um 2 3 parts, 0.05 parts of fluorescent whitening agent.

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PUM

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Abstract

The invention discloses a glass fiber reinforced PBT material, which is prepared from the following raw materials in parts by weight: 60 to 70 parts of PBT resin, 10 to 30 parts of glass fiber, 10 to 20 parts of PMMA resin, 0.5 to 2 parts of clay, 5 to 8 parts of paraffin oil, 0.5 to 1 part of antioxidant, 0.1 to 3 parts of anti-hydrolysis agent and 0.01 to 0.05 part of whitening agent. The invention also discloses a preparation method of the glass fiber reinforced PBT material. The glass fiber reinforced PBT material disclosed by the invention has the advantages of high compatibility,tensile strength and toughness.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a glass fiber reinforced PBT material. Background technique [0002] Polybutylene terephthalate (PBT) is a milky white translucent to opaque, crystalline thermoplastic polymer made by the polymerization of 1.4-butanediol and terephthalic acid or terephthalate through a mixing process. Ester resin is a semi-crystalline polymer with excellent performance. It has the characteristics of high strength, good electrical properties, stable size, good heat resistance, low water absorption and easy molding and processing. It is widely used in automobiles, electronic appliances and machinery manufacturing. However, PBT has disadvantages such as low notched impact strength and large molding shrinkage, which limit the wider application of PBT resin to a certain extent. Glass fiber can strengthen PBT, increase tensile strength, bending strength, and heat distortion temperature, bu...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L33/12C08L91/06C08K7/14C08K3/34C08K3/22C08K13/04C08J5/04
CPCC08J5/043C08J2367/02C08J2433/12C08J2491/06C08K7/14C08K3/346C08K2003/2241C08K13/04
Inventor 苏迎旭王彬
Owner 江阴爱科森博顿聚合体有限公司
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