Cellulose acetate transparent plastic and manufacturing method thereof
A technology of cellulose acetate and transparent plastics, applied in the field of cellulose acetate transparent plastics and its manufacture, can solve problems such as human hormone system and nervous system damage, and achieve the effects of excellent transparency, wide sources, and good mechanical properties
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Example Embodiment
[0029] Example 1
[0030] First weigh 100 parts by mass of cellulose acetate, 33 parts by mass of triethyl citrate, 0.15 parts by mass of tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester, β- (3,5-Di-tert-butyl-4-hydroxyphenyl) stearyl propionate 0.20 parts by mass, pentaerythritol bisphosphite bis(2,4-di-tert-butylphenyl) 0.15 parts by mass, two 0.20 parts by mass of stearyl pentaerythritol diphosphite;
[0031] Then, add the above-mentioned cellulose acetate and plasticizer to a high-speed mixer and stir. After mixing for 10 minutes, place the mixture airtightly at 25°C for more than 24 hours, and then mix with the antioxidant evenly;
[0032] Then, the treated mixture was pelletized with a twin-screw extruder, and the temperature of each section of the twin-screw exit from the feeding port was 160°C, 165°C, 168°C, 170°C, 170°C, 170°C in sequence. The temperature is 168℃;
[0033] Finally, the pellets are dried and packaged.
Example Embodiment
[0034] Example 2
[0035] First weigh 100 parts by mass of cellulose acetate, 43 parts by mass of triethyl citrate, 0.10 parts by mass of tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester, β- (3,5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate 0.20 parts by mass, pentaerythritol bisphosphite bis(2,4-di-tert-butylphenyl) 0.10 parts by mass, two 0.20 parts by mass of stearyl pentaerythritol diphosphite;
[0036] Then, add the above-mentioned cellulose acetate and plasticizer to a high-speed mixer and stir. After mixing for 10 minutes, place the mixture airtightly at 25°C for more than 24 hours, and then mix with the antioxidant evenly;
[0037] Then, the treated mixture was pelletized with a twin-screw extruder, and the temperature of each section of the twin-screw exit from the feeding port was 160°C, 165°C, 168°C, 170°C, 170°C, 170°C in sequence. The temperature is 168℃;
[0038] Finally, the pellets are dried and packaged.
Example Embodiment
[0039] Example 3
[0040] First weigh 100 parts by mass of cellulose acetate, 54 parts by mass of triethyl citrate, 0.20 parts by mass of stearyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, two hard 0.20 parts by mass of aliphatic pentaerythritol diphosphite;
[0041] Then, add the above-mentioned cellulose acetate and plasticizer to a high-speed mixer and stir. After mixing for 10 minutes, place the mixture airtightly at 25°C for more than 24 hours, and then mix with the antioxidant evenly;
[0042] Then, the treated mixture was pelletized with a twin-screw extruder, and the temperature of each section of the twin-screw exit from the feeding port was 160°C, 165°C, 168°C, 170°C, 170°C, 170°C in sequence. The temperature is 168℃;
[0043] Finally, the pellets are dried and packaged.
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