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Polybutylene terephthalate/glass fiber composite and preparation method thereof

A polybutylene terephthalate and glass fiber technology is applied in the field of polybutylene terephthalate/glass fiber composite materials and their preparation, and can solve the toughness of polybutylene terephthalate. , processing performance and poor appearance quality and other problems, to achieve good processing performance, solve the effect of color, notched impact strength enhancement

Active Publication Date: 2014-03-19
MIANYANG SHENGYU NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is that the addition of glass fiber makes the toughness, processability and appearance quality of polybutylene terephthalate relatively poor

Method used

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  • Polybutylene terephthalate/glass fiber composite and preparation method thereof
  • Polybutylene terephthalate/glass fiber composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0033] The preparation of embodiment 1~6 intermediate A and intermediate B

[0034] Intermediate A weighs various raw materials according to the raw material ratio in Table 1, and intermediate B weighs various raw materials according to the raw material ratio in Table 1.

[0035] Among them, PBT resin (molecular weight: 25000) was dried at 120°C for 5 hours before use, and various raw materials were added to a high-speed mixer and mixed at high speed for 3 minutes, and then discharged at a low speed. The mixed material is extruded and granulated to obtain intermediate A and intermediate B. Extrusion granulation conditions are: host screw speed 350r / min, feeding speed 30r / min, heating temperature range: 1 stage / 220°C, 2 stages / 230°C, 3 stages / 240°C, 4 stages / 250°C, 5 stages / 260°C, 6 stages / 250°C, 7 stages / 240°C, 8 stages / 230°C, 9 stages / 230°C, head temperature: 240°C.

Embodiment 7～9

[0040] The preparation of embodiment 7~9 polybutylene terephthalate / glass fiber composite material

[0041] The compositions of Examples 7-9 are shown in Table 2. Intermediate A and Intermediate B were uniformly mixed at a weight percentage of 1:1 to obtain a polybutylene terephthalate / glass fiber composite material.

[0042] Table 2 Composition and preparation of polybutylene terephthalate / glass fiber composites

[0043] product

Embodiment 10

[0044] Embodiment 10 performance comparison

[0045] The tensile strength and elongation at break of the products obtained in Comparative Examples 1 to 3 and the products obtained in Examples 7 to 9 were tested according to the national standard GB / T1040.2-2006; the flexural strength and flexural modulus were tested according to the national standard GB / T9341- Tested in 2000; Izod notched impact strength was tested in accordance with national standard GB / T1843-2008; melt flow rate was tested in accordance with national standard GB / T3682-2000. The performance comparison data of the products are shown in Table 3.

[0046] Table 3 Properties of polybutylene terephthalate / glass fiber composites

[0047]

[0048] As can be seen from table 1 and table 2, the product of embodiment 7 is identical with the glass fiber content of comparative example 2, and the product of embodiment 8 is identical with the glass fiber content of comparative example 3, as can be seen from table 3, by ...

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Abstract

The invention belongs to the technical field of polymer engineering plastics, in particular relates to a polybutylene terephthalate / glass fiber composite and a preparation method thereof and aims to solve the technical problems that the toughness, the processability and the appearance quality of the polybutylene terephthalate are poor due to the addition of a glass fiber. According to the technical scheme of the invention, the polybutylene terephthalate / glass fiber composite with high strength and high toughness is provided, the polybutylene terephthalate / glass fiber composite is prepared by uniformly mixing intermediates A and B according to the mass ratio of 1:1, and carrying out extrusion pelletization. The polybutylene terephthalate / glass fiber composite has stronger strength, stronger toughness, good processability and good appearance effect and can be widely applied to various fields of the electronic field, the automobile field, the household appliance field and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer engineering plastics, and in particular relates to a polybutylene terephthalate / glass fiber composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT), which belongs to crystalline thermoplastic polyester, has fast crystallization speed, easy rapid prototyping, good heat resistance, fatigue resistance, wear resistance, weather resistance, chemical resistance Drug properties, self-lubricating properties and good processing properties make it widely used in various fields such as automobiles, electronics, and packaging. However, due to the disadvantages of PBT's poor mechanical properties, low tensile strength and bending strength, poor dimensional stability, sensitivity to notches, and poor rigidity at high temperatures, its application in many fields is limited. [0003] At present, many studies use glass fibers to enhance and modify PBT ma...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K9/06C08K7/14B29C47/92B29B9/06B29C48/92
CPCB29C48/92
Inventor 阎茂盛
Owner MIANYANG SHENGYU NEW MATERIALS
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