A modified masterbatch suitable for fiber-reinforced PET engineering plastics and its preparation method

A technology for modifying masterbatches and engineering plastics, applied in the field of engineering plastics, can solve the problems of increasing the synergy of additives in the weighing process, limiting the application of PET engineering plastics, and poor surface quality of injection molded parts, and simplifying the material weighing process. , The effect of large filling amount and easy extrusion and granulation

Active Publication Date: 2016-08-24
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Good lubricating properties: The friction coefficient between PET and the metal surface is large. When the glass fiber content is high, the surface quality of the injection molded parts is very poor, and obvious floating fibers can be seen, which also limits PET engineering plastics. Applications
The modified masterbatch used in the above-mentioned patents has a relatively single function, and it needs to be used in conjunction with various other additives in actual production, which increases the problem of the weighing process and the mutual coordination between the additives.

Method used

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  • A modified masterbatch suitable for fiber-reinforced PET engineering plastics and its preparation method
  • A modified masterbatch suitable for fiber-reinforced PET engineering plastics and its preparation method
  • A modified masterbatch suitable for fiber-reinforced PET engineering plastics and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 100 parts of extrusion grade PETG (Eastman grade is GN120), 3 parts of lubricant PETS, 30 parts of nucleating agent ADD-PET301, 40 parts of toughening agent AX8900, 4 parts of antioxidant P262, 5 parts of light stabilizer Agent UV-531, 10 parts of colorant channel black, mixed in a high-speed mixer for 5 to 10 minutes, melted, blended, extruded and granulated through a co-rotating parallel twin-screw extruder to obtain modified masterbatches. The twin-screw extruder is a twin-screw extruder, the temperature range of the extruder barrel is 145-230°C, the screw speed is controlled at 150-800 rpm, and the extruder speed is 500 rpm , the temperature is set to 135°C, 150°C, 165°C, 175°C, 180°C, 180°C, and the die head temperature is 175°C.

[0041] In practical application, the optimal ratio of PET resin to the modified masterbatch is 10:1. By using the modified masterbatch, PET engineering plastics can be endowed with good comprehensive properties. Formula: PET (CZ 328): ...

Embodiment 2

[0057] 100 parts of extrusion-grade PETG (Eastman grade EB062), 5 parts of lubricant EBS and 4 parts of silicone lubricant, 25 parts of nucleating agent MB-HDN, 2 parts of antioxidant 1010 and 4 parts of antioxidant Agent 168, 10 parts of light stabilizer UV-531, mixed by a high-speed mixer for 5 to 10 minutes, and granulated in a twin-screw extruder parallel to the same direction, the extruder speed is 400 rpm, and the temperature is set at 140 ° C , 155°C, 170°C, 190°C, 200°C, 200°C, die head temperature 195°C.

[0058] In actual application, the dosage ratio of PET resin and modified masterbatch is 10:1. Using the masterbatch, PET engineering plastics can be endowed with high modulus, high strength, good surface quality, high heat distortion temperature and good weather resistance.

[0059] PET (the trade mark is CZ 328): 100 parts; the modified masterbatch of embodiment 2: 10 parts; glass fiber (988A, boulder glass fiber): 50wt%.

Embodiment 3

[0074] With 100 parts of extrusion-grade PETG (Eastman brand is EB062), 4 parts of lubricant EBS and 6 parts of silicone, 10 parts of nucleating agent NAV101, 3 parts of antioxidant 1010 and 6 parts of antioxidant 168, and 120 parts of flame retardant red phosphorus and 15 parts of channel carbon black were mixed in a high-speed mixer for 5 to 10 minutes, and granulated in a twin-screw extruder with a speed of 400 rpm and a temperature of 140°C and 155 °C, 170 °C, 190 °C, 200 °C, 200 °C, the die head temperature is 195 °C.

[0075] In practical applications, the ratio of PET resin to modified masterbatch is 10:1, which is suitable for flame-retardant PET engineering plastic formulations. Using the masterbatch, PET engineering plastics can be endowed with high modulus, high strength, good surface quality, and better flame retardant effect.

[0076] PET (the trade mark is CZ 328): 100 parts; the modified masterbatch of embodiment 3: 10 parts; glass fiber (988A, boulder glass fi...

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Abstract

The invention belongs to the technical field of engineering plastic, and discloses a modifying master batch used in fiber-reinforced PET engineering plastic, and a preparation method thereof. The modifying master batch is composed of the components of, by weight, 100 parts of polyethylene terephthalate-1,4-cyclohexane dimethylene terephthalate, 2-30 parts of a nucleating agent, 2-10 parts of a lubricating agent, 2-20 parts of an antioxidant, 0-80 parts of an impact resistance modifier, 0-30 parts of a light stabilizer, 0-15 parts of a colorant, and 0-150 parts of a flame retardant. The preparation method comprises the steps that: the 100 parts of polyethylene terephthalate-1,4-cyclohexane dimethylene terephthalate, 2-10 parts of lubricating agent, 2-30 parts of nucleating agent, 2-20 parts of antioxidant, 0-80 parts of impact resistance modifier, 0-30 parts of light stabilizer, 0-15 parts of colorant, and 0-150 parts of flame retardant are mixed for 5-10min in a high-speed mixer; and melt blending and extrusion granulation are carried out by using a double-screw extruder, such that the modifying master batch suitable for fiber-reinforced PET engineering plastic is obtained. The modifying master batch is multifunctional, and is a composite modifying master batch.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and relates to a modified masterbatch suitable for fiber-reinforced PET engineering plastics and a preparation method thereof. Background technique [0002] Mix the plastic matrix with various additives, including plasticizers, lubricants, impact modifiers, antioxidants, nucleating agents, coloring aids, reinforcing fillers, etc. in a high-speed mixer, and then pass the resulting mixture through Extruder pelletization is the most common method for plastic modification. There are various types of additives involved in plastic modification, including solid particles, powders and even liquids. In order to facilitate application, reduce dust pollution during the mixing process, and improve the dispersion of additives in the matrix, in practical applications, additives are often mixed with the matrix resin in the form of masterbatches. Commonly used masterbatches in plastic modification...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/02B29B9/06B29C47/92C08K13/04C08K7/14B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/40C08K7/14C08L23/0884C08L67/02
Inventor 李兰杰
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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