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Preparation process of nano calcium carbonate composite regenerated PET color master batch
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A nano-calcium carbonate, composite regeneration technology, applied in the manufacture of rayon, adding pigments in spinning solution, single-component polyester rayon, etc. to enhance the spinnability, functional durability and high color fastness
Inactive Publication Date: 2021-11-30
ANHUI AGRICULTURAL UNIVERSITY
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However, it is difficult for such products to meet the requirements of aesthetics, functionality, safety, etc.
At the same time, PET fiber also has some problems, such as poor hygroscopicity and water absorption, low moisture regain, stuffy feeling when wearing polyester fabrics, and polyester fabrics do not absorb sweat, so wearing polyester fiber fabrics is less comfortable than natural fiber fabrics.
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Embodiment 1
[0030] A preparation process of nano calcium carbonate composite recycled PET color masterbatch, comprising the following steps:
[0031] (1) Put the recycled PET masterbatch, nano-calcium carbonate, and pigment red 254 into a vacuum drum oven respectively. The vacuum dryer first heats up to 60°C, dries for 4 hours, then raises the temperature to 120°C, and dries for 4 hours to obtain a dry recycled PET masterbatch, nano calcium carbonate, pigment red 254;
[0032] (2) Mix the dried regenerated PET masterbatch, nano-calcium carbonate, pigment, PET chain extender, and ethylenevinyl acetatecopolymer according to a certain mass ratio of 77.7:2:23:0.3:2;
[0033] (3) Through melt extrusion in a twin-screw extruder, the screw speed of the twin-screw extruder is 150r / min, the melting temperature is 240°C, and pelletized to obtain nano-calcium carbonate composite recycled PET color masterbatch.
Embodiment 2
[0035] A preparation process of nano calcium carbonate composite recycled PET color masterbatch, comprising the following steps:
[0036] (1) Put the regenerated PET masterbatch, nano-calcium carbonate, and pigment violet 29 into a vacuum drum oven respectively. The vacuum dryer first heats up to 70°C, dries for 5h, then raises the temperature to 130°C, dries for 5h, and obtains a dry recycled PET masterbatch, nano calcium carbonate, pigment violet 29;
[0037] (2) Mix the dried regenerated PET masterbatch, nano-calcium carbonate, pigment violet 29, PET chain extender, and ethyleneacrylic acidcopolymer according to a certain mass ratio of 77.7:3:22:0.3:2;
[0038] (3) Through melt extrusion in a twin-screw extruder, the screw speed of the twin-screw extruder is 160r / min, the melting temperature is 250°C, and pelletized to obtain nano-calcium carbonate composite recycled PET color masterbatch.
Embodiment 3
[0040] A preparation process of nano calcium carbonate composite recycled PET color masterbatch, comprising the following steps:
[0041] (1) Put the regenerated PET masterbatch, nano-calcium carbonate, and phthalocyanine blue into a vacuum drum oven, and the vacuum dryer first heats up to 80°C, dries for 6 hours, then raises the temperature to 130°C, and dries for 6 hours to obtain a dry recycled PET masterbatch, nano-calcium carbonate, phthalocyanine blue;
[0042] (2) Mix the dried regenerated PET masterbatch, nano-calcium carbonate, phthalocyanine blue, PET chain extender, and dispersant according to a certain mass ratio of polyester chain hyperdispersant;
[0043] (3) Through melt extrusion in a twin-screw extruder, the screw speed of the twin-screw extruder is 170r / min, the melting temperature is 260°C, and pelletized to obtain nano-calcium carbonate composite recycled PET color masterbatch.
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Abstract
The invention discloses a preparation process of nano calciumcarbonate composite regenerated PET color master batch. The preparation process comprises the following steps: (1) respectively putting regenerated PET master batch, nano calciumcarbonate and a pigment into a vacuum drum oven for drying pretreatment; (2) uniformly mixing the dried regenerated PET master batch, nano calciumcarbonate, a pigment, a PET chain extender and a dispersing agent to obtain a blend; and (3) carrying out melt extrusion on the blend obtained in the step (2) in a twin-screw extruder, and pelletizing to obtain the nano calcium carbonate composite regenerated PET color master batch. The process has the beneficial effects that the nano calcium carbonate composite regenerated PET color master batch obtained by the method is low in pollution, high in color fastness and lasting in functionality, and can be used for preparing high-thermal-stability and high-toughness PET with a dope coloring hydrophilic PET function by melt spinning, the problem of pigment agglomeration is solved by adding the dispersing agent, the spinnability of the regenerated PET color master batch is enhanced, and the method can be used for large-scale production and large-area application to preparation of multifunctional PET.
Description
technical field [0001] The invention relates to a process method for industrialized regenerated PET masterbatch, in particular to a preparation process of nano calcium carbonate composite regenerated PET color masterbatch. Background technique [0002] With the continuous improvement of people's living standards and the rapid development of science and technology, PET has brought great convenience to people's production and life. PET has good thermal and mechanical properties, and is widely used in chemical fibers, packaging materials, electronic equipment and manufacturing industries. In recent years, PET has taken the lead in the chemical fiber market, and PET fiber accounts for about 80% of the chemical fiber market. Polyester products bring convenience to people's life and production, but at the same time, because they are difficult to degrade, they will cause serious environmental hazards, so the disposal of waste polyester has become an important issue. The treatment...
Claims
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