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Preparation of nano SiO2 enhanced toughened PET composite material for plastic-steel baling belt

A technology of plastic-steel packing belt and composite material, which is applied in the field of preparation of nano-material modified polyethylene terephthalate, can solve the problems of poor dispersion and inconspicuous modification effect, achieve simple process and solve relative problems. Capacitive issues, effects of small particle size

Inactive Publication Date: 2011-02-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor dispersion and inconspicuous modification effect existing in the prior art, the present invention provides a nano-SiO 2 The preparation method of reinforced and toughened PET composite material, nano-SiO in the PET composite material produced by this method 2 The particles are uniformly dispersed in PET, and the effect of strengthening and toughening is obvious

Method used

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  • Preparation of nano SiO2 enhanced toughened PET composite material for plastic-steel baling belt
  • Preparation of nano SiO2 enhanced toughened PET composite material for plastic-steel baling belt
  • Preparation of nano SiO2 enhanced toughened PET composite material for plastic-steel baling belt

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Experimental program
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Effect test

Embodiment 1

[0027] Take 750g of dried PET pellets, stir them in a molten state, turn on the ultrasonic wave, add 7.5g of coupling agent KH550, mix for 10 minutes, then add 90g of gas phase SiO 2 Mix for 30 minutes, then add 80g gas phase SiO in two times 2 , every 30 minutes. Continue to sonicate and stir for 1 hour, and the material is cooled and granulated to obtain a modified masterbatch, wherein SiO 2 The content is 25% (referred to as PET-25)

Embodiment 2

[0029] Take 700g of dried PET pellets, stir them in a molten state, turn on the ultrasonic wave, add 9.0g of coupling agent KH550, mix for 10 minutes, then add 100g of gas phase SiO 2 Mix for 30 minutes, then add 100g gas phase SiO in two times 2 , every 30 minutes. Continue to sonicate and stir for 1 hour, and the material is cooled and granulated to obtain a modified masterbatch, wherein SiO 2 The content is 30% (referred to as PET-30)

Embodiment 3

[0031] Take 650g of dried PET pellets, stir them in a molten state, turn on the ultrasonic wave, add 10.5g of coupling agent KH550, mix for 10 minutes, then add 130g of gas phase SiO 2 Mix for 30 minutes, then add 110g gas phase SiO in two times 2 , every 30 minutes. Continue to sonicate and stir for 1 hour, and the material is cooled and granulated to obtain a modified masterbatch, wherein SiO 2 The content is 35% (referred to as PET-35)

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Abstract

The invention discloses a nanometer SiO2 strengthening-toughening PET compound material for plastic-steel packing straps. A melt-blending method is adopted to prepare a master batch of the nanometer SiO2 strengthening PET compound material; the weight percentage content of gas-phase SiO2 is between 25 and 40 percent; a melting system always maintains high-speed shearing dispersion and carries outmixing in a 20KHz ultrasonic environment; a coupling agent KH550 or A1120 is added to the melting system, and the dosage of the coupling agent is 2.5-4 percent of that of the SiO2; the master batch is blended with PET and fed in certain proportion, and then the nanometer SiO2 strengthening-toughening PET compound material can be obtained, wherein the content of nanometer SiO2 is between 1 to 3.5 percent. Due to the adoption of the compound material, nanometer SiO2 particles in PET are uniform in dispersion, good in crystallization property, obvious in strengthening effect, good in the compatibility with the PET, simple to operate and low in cost. The PET master batch is blended with the PET for producing the plastic-steel packing straps, which can raise the strength, toughness, etc. of the PET.

Description

1. Technical field [0001] The invention relates to the field of polyester preparation methods, in particular to a preparation method of nanomaterial-modified polyethylene terephthalate (PET). 2. Background technology [0002] Since PET came out in 1941, because of its excellent comprehensive properties, it can maintain excellent physical properties in a wide temperature range, and has high impact strength, good friction resistance, low moisture absorption, good dimensional stability, and excellent electrical properties. , It is stable to most organic solvents and inorganic acids, so it has been widely used as a non-fiber polymer material, and has been further expanded to various containers, packaging (binding) materials, films, films, engineering plastics and other fields. Among them, the application of PET to plastic-steel strapping is a new type of strapping that is popular in the world to replace steel straps. It is widely used in steel, aluminum, chemical fiber, cotton s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K3/36C08K5/544C08J3/22B65D63/10
Inventor 孙岳明王华林刘星汛
Owner SOUTHEAST UNIV
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