Glass fiber reinforced rigidity-and-toughness-balanced polyester composition and preparation method thereof

A balanced and composite technology, applied in the field of engineering plastics, can solve problems such as poor effects, and achieve the effects of good balance of rigidity and toughness, good appearance of parts, and high strength

Inactive Publication Date: 2016-06-08
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polyester has great advantages in tensile strength, flexural strength and flexural modulus, it cannot be used in some fields that require high strength and higher toughness of the composition
Resin reinforcement generally uses glass fibers, and adding ordinary tougheners to the composition of glass fibers to increase impact resistance is very ineffective

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0028] (1) Mixing of raw materials

[0029] After drying the polyester in an oven at 80-120°C, weigh the following raw materials according to the weight ratio in Table 1 below: polyester, dimethyl itaconate, glass fiber, antioxidant, lubricant Modifier, coupling agent; finally added to the high mixer, mixed evenly at room temperature;

[0030] (2) Extrusion granulation

[0031] The raw material mixture obtained in step (1) is added into the hopper of the twin-screw extruder, and at the same time, continuous glass fiber is rolled into the glass fiber inlet of the twin-screw extruder, melted and extruded to granulate; the polymer of the present invention is obtained ester composition.

[0032] The extrusion process in the step (2) is as follows: from the feeding port to the machine head, there are ten sections of extrusion temperature respectively 190~230°C, 250~260°C, 250~260°C, 245~255°C, 245~255℃, 240~250℃, 240~250℃, 250~260℃, 250~260℃, 255~265℃, head temperature is 260~27...

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PUM

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Abstract

The invention discloses a glass fiber reinforced rigidity-and-toughness-balanced polyester composition and a preparation method thereof. The glass fiber reinforced rigidity-and-toughness-balanced polyester composition is prepared from the following ingredients in parts by weight: 100 parts of polyester, 1-5 parts of dimethyl itaconate, 20-100 parts of glass fibers, 0.1-0.5 part of antioxidant, 0.1-0.5 part of lubrication modifier and 0.1-0.2 part of coupling agent. The composition disclosed by the invention has excellent impact resistance while having very high strength and is an engineering plastic with relatively good rigidity and toughness balance; and the process for preparing the composition is simple and easy to operate, the processing formability is good, products are easy in demolding, and the surface appearance of the workpieces is good.

Description

technical field [0001] The invention belongs to the field of engineering plastics, and relates to a glass fiber-reinforced rigid-toughness balanced polyester composition and a preparation method thereof. Background technique [0002] Polyester is a kind of material with excellent performance. Because of its good mechanical properties, good coloring property, chemical corrosion resistance, etc., it has a wide range of applications in spinning and film packaging industries. As engineering plastics, polyester The amount of ester engineering plastics is small, and the main application fields are electrical and electronic, machinery, automobile, light industry and building materials industry. Although polyester has great advantages in tensile strength, flexural strength and flexural modulus, it cannot be used in some fields that require high strength and higher toughness of the composition. Resin reinforcement generally uses glass fibers, and adding ordinary tougheners to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L83/04C08K7/14C08K5/11C08K5/544B29C47/92B29C48/92
Inventor 杨桂生方永炜
Owner HEFEI GENIUS NEW MATERIALS
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