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High impact modified PET/PTT alloy and preparation method thereof

A high-impact, modified technology, applied in the field of polymer materials, can solve the problems of low toughness, unstable mechanical properties, and limited application effects of PET/PTT, and achieve high notched impact strength, low cost, and wide adaptability Effect

Inactive Publication Date: 2015-08-19
王妮娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low toughness, unstable mechanical properties and poor flame retardancy of PET / PTT will greatly limit its application effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-impact modified PET / PTT alloy, the composition of which is: PET 30%, PTT 40%, AS-g-GMA 5%, inorganic particles 15%, diisocyanate 2%, ethylene glycol 5% alcohol, 2% light stabilizer, 0.1% potassium perfluorobutane sulfonate, 0.3% compound of antioxidant 1076 and antioxidant 168, 0.6% pentaerythritol stearate, the inorganic particles are granular Calcium carbonate with a diameter of 10-80nm, and the light stabilizer is a compound of hindered amine light stabilizer HS-944 and HS-622 with a mass ratio of 1:1.

[0021] Preparation method: (1) Dry PET and PTT in a forced air circulation oven at 110°C-120°C for 6-8 hours, dry inorganic particles at 60°C-100°C for 30-45 minutes, and set aside ; (2) Weigh the dry inorganic particles according to the weight ratio and add them to the mixer at a barrel temperature of 40°C to 70°C, and at the same time add ethylene glycol weighed according to the weight ratio, and stir together at a low speed for 5 to 30 minutes , then add t...

Embodiment 2

[0023] A high-impact modified PET / PTT alloy, its components are proportioned by mass percentage: PET 70%, PTT 20%, AS-g-GMA 2%, inorganic particles 5%, diisocyanate 0.5%, ethylene glycol 1.5% alcohol, 0.5% light stabilizer, 0.1% potassium perfluorobutanesulfonate, 0.1% antioxidant 1010, 0.3% pentaerythritol stearate, the inorganic particles are silicon dioxide with a particle size of 20-40nm , the light stabilizer is a compound of hindered amine light stabilizer HS-944 and HS-622 with a mass ratio of 1:1.

[0024] Preparation method: (1) Dry PET and PTT in a forced air circulation oven at 110°C-120°C for 6-8 hours, dry inorganic particles at 60°C-100°C for 30-45 minutes, and set aside ; (2) Weigh the dry inorganic particles according to the weight ratio and add them to the mixer at a barrel temperature of 40°C to 70°C, and at the same time add ethylene glycol weighed according to the weight ratio, and stir together at a low speed for 5 to 30 minutes , then add the diisocyanat...

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Abstract

The invention discloses a high impact modified PET / PTT alloy and a preparation method thereof. The high impact modified PET / PTT alloy is composed of the following components by mass: 30%-70% of PET, 20%-40% of PTT, 2%-5% of AS-g-GMA, 5%-15% of inorganic particles, 0.5%-2% of diisocyanate, 1%-5% of ethylene glycol, 0.5%-2% of a light stabilizer, 0.1%-1% of a sulfonate flame retardant, 0.1%-0.5% of an antioxidant, and 0.1%-1% of a lubricant, wherein the inorganic particles are calcium carbonate with a particle size of 10-80nm or silica with a particle size of 20-40nm. The high impact modified PET / PTT alloy provided by the invention integrates the respective advantages of PTT and PET, also has excellent toughening, reinforcing, stiffening, flame retardant and anti-aging properties, and has the advantages of high notch impact strength, good heat resistance, efficient flame retardance, low cost and wide adaptability.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-impact modified PET / PTT alloy and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) / polytrimethylene terephthalate (PTT) is a new type of polymer plastic alloy, which has excellent comprehensive performance and chemical resistance, so it is used in automobiles, electronics It will have broad application prospects in fields such as electrical appliances, household appliances, and fibers. However, the low toughness, unstable mechanical properties and poor flame retardancy of PET / PTT will greatly limit its application effect. In order to improve the performance of PET / PTT, it is often necessary to add a third component to PET / PTT for modification, such as compatibilizers, inorganic particles, flame retardants, etc., in order to obtain a composite system with considerable practical value for better Improve its application ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/06C08K13/06C08K9/10C08K3/26C08K3/36C08K5/42C08J3/22B29B9/06B29C47/92B29C48/92
Inventor 不公告发明人
Owner 王妮娜