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Polytrimethylene terephthalate/Poly-butylene terephthalate alloy material and preparation method thereof

A technology of polytrimethylene terephthalate and polybutylene terephthalate, applied in the field of polytrimethylene terephthalate/polybutylene terephthalate alloy material and its preparation, can solve the problem of Reduce material heat distortion temperature, rigid flexural modulus, deterioration of processability of polytrimethylene terephthalate, and no modified materials, etc., to achieve the effect of improving rigidity, good processability, and good rigidity

Inactive Publication Date: 2009-09-09
佛山市顺德区华塑龙塑料实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of its own performance, polytrimethylene terephthalate (PTT) has disadvantages such as high brittleness, poor impact performance, and high melting temperature, so currently polytrimethylene terephthalate (PTT) is used in The scope of use in industrial applications is narrow, and the amount of use is not large
The prior art generally adds a small portion of polytrimethylene terephthalate (PTT) to the modified material of polybutylene terephthalate (PBT) to improve the performance of polybutylene terephthalate (PBT). performance, there is no modified material mainly based on polytrimethylene terephthalate (PTT)
Another way to improve the performance of polytrimethylene terephthalate (PTT) is to add elastomers in its modification process, although it can improve the brittleness of polytrimethylene terephthalate (PTT) and increase its impact Strength, but other properties of polytrimethylene terephthalate (PTT) will be greatly affected, such as reducing the heat distortion temperature of the material, rigidity, flexural modulus, etc., and making polytrimethylene terephthalate (PTT) ) The machinability of the material is further deteriorated

Method used

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  • Polytrimethylene terephthalate/Poly-butylene terephthalate alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The polytrimethylene terephthalate / polybutylene terephthalate alloy material of the present invention comprises polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), glass fiber, Low density polyethylene (LDPE), compatibilizer, antioxidant and nucleating agent. Among them, the relative density of polytrimethylene terephthalate (PTT) is 1.34-1.37; the melting point is 220-230 ° C, and the melt viscosity is between 0.85-0.90; the polybutylene terephthalate (PBT) The relative density is 1.33-1.36; the melting point is 225-235°C, and the melt viscosity is between 0.8-1.2; the glass fiber is alkali-free, untwisted, 10 yarns / 20 strands of long fiber; low-density polyethylene (LDPE) The melt index (230°C, 2.16kg) is 30-60; the compatibilizer is acrylate and glycidyl ester bifunctional vinyl elastomer (HK-220), and its melt index (230°C, 5kg) is 1.0 -2.0, graft rate 0.5-1.5%; Antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaeryt...

Embodiment 2

[0040] The polytrimethylene terephthalate / polybutylene terephthalate alloy material of the present invention comprises polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), glass fiber, Low density polyethylene (LDPE), compatibilizer, antioxidant and nucleating agent. Among them, the relative density of polytrimethylene terephthalate (PTT) is 1.34-1.37; the melting point is 220-230 ° C, and the melt viscosity is between 0.85-0.90; the polybutylene terephthalate (PBT) The relative density is 1.33-1.36; the melting point is 225-235°C, and the melt viscosity is between 0.8-1.2; the glass fiber is alkali-free, untwisted, 10 yarns / 20 strands of long fiber; low-density polyethylene (LDPE) The melt index (230°C, 2.16kg) is 30-60; the compatibilizer is acrylate and glycidyl ester bifunctional vinyl elastomer (HK-220), and its melt index (230°C, 5kg) is 1.0 -2.0, graft rate 0.5-1.5%; Antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaeryt...

Embodiment 3

[0048] The polytrimethylene terephthalate / polybutylene terephthalate alloy material of the present invention comprises polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), glass fiber, Low density polyethylene (LDPE), compatibilizer, antioxidant and nucleating agent. Among them, the relative density of polytrimethylene terephthalate (PTT) is 1.34-1.37; the melting point is 220-230 ° C, and the melt viscosity is between 0.85-0.90; the polybutylene terephthalate (PBT) The relative density is 1.33-1.36; the melting point is 225-235°C, and the melt viscosity is between 0.8-1.2; the glass fiber is alkali-free, untwisted, 10 yarns / 20 strands of long fiber; low-density polyethylene (LDPE) The melt index (230°C, 2.16kg) is 30-60; the compatibilizer is acrylate and glycidyl ester bifunctional vinyl elastomer (HK-220), and its melt index (230°C, 5kg) is 1.0 -2.0, graft rate 0.5-1.5%; Antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaeryt...

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Abstract

The invention relates to a polytrimethylene terephthalate / Poly-butylene terephthalate alloy material which is characterized by comprising the following composition by weight: 30-55 percent of polytrimethylene terephthalate (PTT), 10-40 percent of Poly-butylene terephthalate (PBT), 10-30 percent of fibre glass, 2-6 percent of low density polyethylene (LDPE), 4-8 percent of compatibilizer, 0.2-0.6 percent of chemical inhibitor and 0.5-2 percent of nucleating agent. The polyp-phenylene terephthalate / Poly-butylene terephthalate alloy material has good impact resilience and high stretching strength and flexural modulus.

Description

technical field [0001] The invention relates to a polytrimethylene terephthalate / polybutylene terephthalate alloy material and a preparation method thereof. Background technique [0002] With the development of economy, the application of plastic materials becomes more and more important. Polytrimethylene terephthalate (PTT) is a new type of thermoplastic polyester that has been industrialized in recent years. It has good mechanical properties, good elasticity, wear resistance, low water absorption and good dimensional stability. , and relatively low cost compared to other engineering plastics. Therefore, polytrimethylene terephthalate (PTT) is widely used in the fields of automobile, electronics, electrical appliances, machinery, chemical industry and quality industry. However, due to the influence of its own performance, polytrimethylene terephthalate (PTT) has disadvantages such as high brittleness, poor impact performance, and high melting temperature, so currently pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L51/06C08K13/04C08K7/14C08K3/34B29B9/14B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/40B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 张金柱朱建一
Owner 佛山市顺德区华塑龙塑料实业有限公司
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