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Method for producing eco-friendly cellulose acetate compound

A technology of cellulose acetate and compounds, which is applied in the field of preparation of environment-friendly cellulose acetate compounds, can solve the problems of harmful working environment, difficulty in producing products with the same shape, and low efficiency, so as to increase thermalization temperature and reduce adverse factors , The effect of reducing material waste

Inactive Publication Date: 2018-11-13
世界潮流 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the process of using a press to manufacture CA sheets, the process of mixing plasticizers is complicated, and most of the processes require manual operations, so the efficiency is low and it is difficult to manufacture products of the same shape
Although the CA sheet manufactured by the extrusion method has improved the process to some extent, due to the toxic gas generated during the operation, not only the working environment is fragile, but also only one color or CA sheets that form multi-color layers can be produced.
In addition, the above two processes have a factor that hinders the safety of workers because the gas generated when the phthalate plasticizer is vaporized makes the working environment harmful.

Method used

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  • Method for producing eco-friendly cellulose acetate compound

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preparation example Construction

[0028] figure 1 It is a process diagram of a preparation method of a cellulose acetate compound according to an embodiment of the present invention. refer to figure 1 , The method for preparing a cellulose acetate compound according to an embodiment of the present invention includes: step S10, preparing a cellulose acetate composition; and step S20, processing into a pellet (Pellet).

[0029] In step S10, a plasticizer and additives are mixed with the cellulose acetate to prepare a cellulose acetate composition.

[0030] First, prepare cellulose acetate. Cellulose acetate is in powder form, so the water should be removed. Moisture removal can usually be carried out in a drying cabinet at a lower temperature than the processing temperature. In the subsequent extrusion operation, if the drying is insufficient, water vapor will be generated, resulting in foaming, and the powder will stick to the inside of the hopper, which may lead to unsatisfactory supply of raw materials....

Embodiment 1

[0055] In Example 1, 100g of CA398-30 and 10g of CDP were mixed, then the temperature of the extruder (adapter-die-cylinder-screw) was set to 215-210-210-210°C, and extruded After forming, pellets were produced using a shearing machine. At this time, the speed of the main screw, the speed of the feeder screw and the speed of the cutting screw are 283, 21, and 8 rpm, respectively. As a result of manufacturing in Example 1, it was difficult to control the speed of each screw at the initial stage, and when the residence time on the screw became longer, discoloration occurred over time. When no discoloration occurs, it maintains a relatively transparent gloss.

Embodiment 2

[0057] In embodiment 2, mixed the CDP of CA398-30, 10g of 100g, pigment, heat stabilizer (BZ-170T 2g), then the temperature of extruder (adapter-mold-cylinder-screw) is respectively set to 215-210-210-210 ℃, and after extrusion molding, the pellets were made by shearing machine. At this time, the speed of the main screw, the speed of the feeder screw and the speed of the cutting screw were 290, 20, and 8 rpm, respectively. In Example 2, the effect of suppressing thermal decomposition by adding a thermal stabilizer was confirmed. Extrusion properties are good, stretchable and maintain an overall uniform shape.

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Abstract

The invention provides a method for producing a cellulose acetate compound, comprising: a step of producing a cellulose acetate composition by adding a plasticizer and an additive to cellulose acetate; and a step of producing the cellulose acetate composition in pellet form.

Description

technical field [0001] The present invention relates to the preparation method of cellulose acetate compound, more particularly, relate to the preparation method of environment-friendly cellulose acetate compound without adding phthalate plasticizer. Background technique [0002] Cellulose acetate (CA) is made of cellulose extracted from pulp or cotton as a natural material. It has excellent regeneration and biodegradability, is harmless to the human body, and can achieve various textures. Long Yuet has an antique look, is soft and not easy to break, and is a high-grade natural material, so it is not only used in fashion products such as eyeglass frames and accessories, but also in various other products. [0003] Compared with cellulose, cellulose acetate exhibits a certain degree of thermoformability due to the termination of hydroxyl groups, but the gap between the rigid molecular chain, which is an inherent characteristic of the main chain, and the molecular chain caused...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/12C08K5/523C08K5/06C08K5/11C08K5/00B29B9/06B29B9/12
CPCB29B9/06B29B9/12B29B2009/125C08K5/0016C08K5/06C08K5/11C08K5/523C08L2201/08C08L1/12
Inventor 朴峻烨裵侑焕李枝垠李钟奂吴相泽朴贤珠全浩均
Owner 世界潮流
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