A kind of thermoplastic polyester of antibacterial film and preparation method thereof
A technology of thermoplastic polyester and film, which is applied in the field of thermoplastic polyester of antibacterial film and its preparation, which can solve the problems of easy food corruption and other problems, and achieve the effects of improving activation performance, reducing interference and uniform molecular weight
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0061] Synthesis of the first prepolymer in step 1:
[0062] Step 1-1: Add 200 parts of terephthalic acid and 140 parts of ethylene glycol into the reaction kettle, heat up to 40°C for pre-mixing;
[0063] Step 1-2: Add 50 parts of maleic anhydride and 5 parts of 2,3-dibromo-2-butene-1,4-diol and raise the temperature to 200~220 degrees Celsius for esterification reaction, and react for 30~50 minutes Finally, add 0.01~0.5 parts of Ti / Si catalyst and continue the reaction for 10~30 minutes;
[0064] Step 1-3: Add the remaining 200 parts of terephthalic acid, 100 parts of ethylene glycol, 10 parts of 2-nitroterephthalic acid-4-methyl ester, 2-methyl-2,4-pentanediol 5 Continue the reaction and lower the temperature to 180~200°C, and react for 20~40 minutes to obtain the first prepolymer for later use;
[0065] Step 2: Preparation of the second prepolymer
[0066] Step 2-1: Add 200 parts of terephthalic acid and 180 parts of ethylene glycol into the reaction kettle, and heat up...
Embodiment 2
[0087] The difference with embodiment one is that its preparation antibacterial agent step is:
[0088] Step A: Add 4ml of 4-bromobutyryl chloride to 10g of nano-silica, stir and react at 20-30°C for 10-15 hours, and activate the nano-silica;
[0089] Step B: After the reaction is completed, the mixture is centrifuged, washed with methanol, and dried to obtain activated nano-silica;
[0090] Step C: Add 10 g of polyethyleneimine to the activated nano-silica, add 0.1 g of KOH, and stir at 85° C. for 15 to 20 hours;
[0091] Step D: Centrifuge after the reaction, fully wash with methanol, and dry;
[0092] Step E: Put the air-dried nano-silica powder into 20ml of isobutanol, then add 10ml of bromohexane and 0.1g of bromoacetyl bromide and stir at 70-80°C for 15-25 hours;
[0093] Step F: After the reaction is completed, the temperature is lowered to 30-45° C., and 5 ml of potassium iodide is added thereto, stirred for 8-12 hours, centrifuged, fully washed with methanol, and th...
Embodiment 3
[0095] Compared with Example 1, the difference is that the HM98 organosilicon antibacterial agent purchased from Guangzhou Nuokang Chemical Co., Ltd. is selected.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More