Biodegradable weeding mulching film, and preparation method thereof
A technology of biodegradation and weeding film, applied in the fields of botanical equipment and methods, weed elimination equipment, plant protection, etc. Improve drug effect time, improve utilization rate and utilization efficiency, and slow down the release rate
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[0048] Example 1
[0049]Preparation of biodegradable herbicide masterbatch:
[0050] Mix atrazine and sorbitan laurate for 3 to 5 minutes, and ultrasonically activate at 100 to 500W for 3 to 25 minutes; then mix with PBAT and glyceryl monostearate, and stir and mix at a speed of 600 to 1200 rpm for 1 ~5min, the mixing temperature does not exceed 60℃, extrude and granulate at 110~150℃, and obtain the herbicide master batch.
[0051] Wherein, the mass percentage of each reactant is: PBAT 75%; atrazine 20%; sorbitan laurate 2.5%; glycerol monostearate 2.5%.
[0052] Preparation of Biodegradable Weeding Film:
[0053] The biodegradable herbicide masterbatch, PLA and PBAT are mixed in a mixer for 3-5 minutes, and blow-molded at 130-200 DEG C to obtain a biodegradable weeding film.
[0054] Wherein, the mass percentage of each reactant is: 30% of biodegradable herbicide masterbatch; 10% of PLA; 60% of PBAT.
[0055] The melt index of the used PLA is 3-5 g / 10min; the melt index ...
Example Embodiment
[0056] Example 2
[0057] Preparation of biodegradable herbicide masterbatch:
[0058] Mix atrazine and polyoxyethylene lauryl ether for 3 to 5 minutes, and ultrasonically activate at 100 to 500W for 3 to 25 minutes; then mix with PBAT and propylene glycol fatty acid ester, stir and mix for 1 to 5 minutes at a speed of 600 to 1200 rpm, and mix The temperature does not exceed 60 ℃, extruding and granulating at 110-150 ℃ to obtain herbicide master batch.
[0059] Wherein, the mass percentage of each reactant is: PBAT 75%; atrazine 10%; polyoxyethylene lauryl ether 5%; propylene glycol fatty acid ester 10%.
[0060] Preparation of Biodegradable Weeding Film:
[0061] The biodegradable herbicide masterbatch, PLA and PBAT are mixed in a mixer for 3-5 minutes, and blow-molded at 130-200 DEG C to obtain a biodegradable weeding film.
[0062] Wherein, the mass percentage of each reactant is: 10% of biodegradable herbicide masterbatch; 15% of PLA; 75% of PBAT.
[0063] The melt ind...
Example Embodiment
[0064] Example 3
[0065] Preparation of biodegradable herbicide masterbatch:
[0066] Atrazine is mixed with polyoxyethylene (4EO) sorbitan monostearate for 3 to 5 minutes, and ultrasonically activated for 3 to 25 minutes at a power of 100 to 500W; Stir and mix for 1-5 minutes at a speed of 600-1200 rpm, the mixing temperature does not exceed 60°C, and extrude and granulate at 110-150°C to obtain the herbicide master batch.
[0067] Wherein, the mass percentage of each reactant is: PBAT 30%; atrazine 60%; polyoxyethylene (4EO) sorbitan monostearate 5%; propylene glycol monostearate 5%.
[0068] Preparation of Biodegradable Weeding Film:
[0069] The biodegradable herbicide masterbatch, PLA and PBAT are mixed in a mixer for 3-5 minutes, and blow-molded at 130-200 DEG C to obtain a biodegradable weeding film.
[0070] Among them, the mass percentage of each reactant is: 3% of biodegradable herbicide masterbatch; 20% of PLA; 77% of PBAT.
[0071] The melt index of the used P...
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