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A kind of flame retardant pet composite material and preparation method thereof

A composite material and feeding port technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, single-component polyester rayon, etc., can solve the problems of many by-products, low decomposition temperature, unfavorable industrial production, etc. Less, the effect of improving the thermal stability of the product

Active Publication Date: 2018-07-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method is feasible, the preparation process is complicated, there are many by-products, and the by-products are not easy to remove by solvent washing, which is not conducive to industrial production
The by-products are generally substances with lower molecular weight and lower decomposition temperature, which will decompose during PET processing (280-300°C), thereby deteriorating the mechanical properties of PET and causing a decline in the mechanical properties of PET composites

Method used

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  • A kind of flame retardant pet composite material and preparation method thereof
  • A kind of flame retardant pet composite material and preparation method thereof
  • A kind of flame retardant pet composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 5g of CMSs in a quartz boat, place the quartz boat in a closed tubular muffle furnace, and first pass nitrogen for 10 minutes to displace and drive off the air in the muffle furnace. Keeping the nitrogen flow rate at 150ml / min, the muffle furnace was heated to 800°C at a heating rate of 10°C / min, and the constant temperature was maintained for 2h. After the reaction, the temperature was naturally cooled to room temperature under a nitrogen atmosphere, and the product was collected to obtain annealed CMSs (ie, TCMSs).

[0029] figure 1 The XRD patterns of raw CMSs and TCMSs obtained by annealing are given respectively. It can be seen from the figure that CMSs have a broad diffraction peak at 22.83°, indicating that CMSs mainly exist in the form of amorphous carbon. The diffraction peak of annealed TCMSs at 21.64° is narrowed and another diffraction peak appears at 43.57°. Both are characteristic peaks of graphitic carbon. The relative intensity and peak width of...

Embodiment 2

[0042] Weigh 5g of CMSs in a quartz boat, place the quartz boat in a closed tubular muffle furnace, and first pass nitrogen gas for 20 minutes to displace and drive off the air in the muffle furnace. Keeping the nitrogen flow rate at 200ml / min, the muffle furnace was heated to 600°C at a heating rate of 20°C / min, and the constant temperature was maintained for 5h. After the reaction, the temperature was naturally cooled to room temperature under nitrogen atmosphere, and the products were collected to obtain annealed CMSs (ie, TCMSs).

[0043] Weigh 1kg of PET chips and vacuum dry them at 130°C for 8 hours, so that the moisture content of the chips reaches 28ppm. 10 g of TCMSs were weighed and dried under vacuum at 130 °C for 5 h. The dried PET chips are added to the main feeding port of the twin-screw extruder with a frequency of 10 Hz, 10 g of TCMSs are added to the side feeding port of a frequency of 7 Hz, heated to 265 ° C for melt blending, wire drawing and pelletizing to...

Embodiment 3

[0046] Weigh 10 g of CMSs into a quartz boat, place the quartz boat in a closed tubular muffle furnace, and first introduce nitrogen for 20 min to displace and drive off the air in the muffle furnace. Keeping the nitrogen flow rate at 200ml / min, the muffle furnace was heated to 700°C at a heating rate of 50°C / min, and the constant temperature was maintained for 3h. After the reaction, the temperature was naturally cooled to room temperature under a nitrogen atmosphere, and the products were collected to obtain annealed CMSs (ie, TCMSs).

[0047] Weigh 1kg of PET chips and vacuum dry at 130°C for 8 hours to make the moisture content of the chips reach 28ppm. Weigh 20 g of TCMSs, and also vacuum dry at 130 °C for 8 h. The dried PET chips are added to the main feeding port of the twin-screw extruder with a frequency of 13 Hz, and 20 g of TCMSs are added to the side feeding port of a frequency of 9 Hz, heated to 275 ° C for melt blending, wire drawing and pelletizing to obtain T...

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Abstract

The invention discloses a flame-resistant PET composite. The flame-resistant PET composite is prepared according to the following steps: adding TCMSs to a PET basal body for melting, blending, wire drawing and slicing so as to obtain TCMSs / PET slices containing the TCMSs of which the percentage by mass is 0.2-2%, wherein the TCMSs is a material obtained by heating CMSs under inert atmosphere to 600-800 DEG C and then performing annealing treatment for 30-120min, and can be used for preparing flame-resistant PET fibers. The composite disclosed by the invention can be added to the PET basal body for preparing the flame-resistant PET fibers, so that the fire resistance of the PET fibers can be improved, and the condition that the tensile strength of the PET fibers is reduced due to the addition of the CMSs is also obviously improved.

Description

technical field [0001] The invention relates to a functional material, in particular to a PET composite material with flame retardant properties and a preparation method of the material. Background technique [0002] Polymer materials can be widely used in construction, transportation, electronic appliances, and daily necessities, but at the same time, due to the combustion performance of most polymer materials, the danger and harm of fire are greatly increased. Therefore, it is very necessary to carry out flame retardant modification of polymer materials. [0003] There are two main types of flame retardants used for polymer materials: additive type and reactive type. Due to the fact that reactive flame retardants will produce many side reactions and the preparation process is complicated, additive flame retardants are more popular, but additive flame retardants also have the defect of large amount of addition, which is easy to cause the mechanical properties of composite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K7/18D01F6/92D01F1/07
CPCC08K7/18C08L2201/02C08L2203/12D01F1/07D01F6/92C08L67/02
Inventor 杨永珍薛宝霞牛梅白洁刘旭光侯文生戴晋明
Owner TAIYUAN UNIV OF TECH
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