PE polyethylene film in use, how to correct proportion is a big problem plaguing film manufacturers, this paper will introduce PE drip-free greenhouse film formula and anti-atomization transparent composite greenhouse film formula, to help manufacturers solve this problem.
1. Drip-free greenhouse film formula 1
Formula (mass portion) :
(Stearin monoglyceride, fatty acid amide, and another opening agent, and the three kinds of nonionic surfactant Twain equal dosage) Total 0.5 ~ 1.2; LLDPE (DFDA-7047) 50; Antiskid agent 0.4 ~ 0.7.
Machining conditions:
Barrel temperature 130-150 ℃, 160-180 ℃, head temperature 160-170 ℃, blow ratio 2-4, screw speed 30-50r /min, extruder screw 65mm, length-diameter ratio (L/D) 28, compression ratio 3.5.
Properties:
Tensile strength of 18.2 ~ 22.8MPa, elongation at break of 450% ~ 525%, right Angle tear strength of longitudinal 92.7 ~ 99.6kN/m, transverse 111 ~ 99.6kN/m.
2. PE drip-free greenhouse film formula 2
Formula (mass):
LDPE50; LLDPE50; Drip-free master 5.0; Antioxidant and UV absorbent 1.7.
Properties:
Tensile strength (longitudinal/transverse) is 29/25 (MPa), elongation at break (longitudinal/transverse) is 720/760%, and right Angle tear strength (longitudinal/transverse) is 118/112kN/m.
3. PE drip-free greenhouse film formula 3
Formula (mass fraction, %) :
LDPE98.5; Sorbitol monostearate 1%; ZnSt0.5.
Related performance:
Anti-fog drops for 140 days.
4. Anti-atomization transparent composite greenhouse film formula
Processing conditions:
The above formula has three layers (intermediate layer as a barrier layer, mostly using ethylene/vinyl acetate) co-extrusion, three layers of thickness of 15μm, 75μm, and 15μm composite film.
Performance:
The film has good atomization resistance, transparency, flexibility, and elastic recovery.
5. LDPE drip-free mulch formula
Formula (mass):
LDPE100; LLDPE60; Sorbitol compounds 0.6.
6. Anti-drip anti-aging double anti-film formula
Formula (mass) :
LDPE60; LLDPE40; UV-5310.3; Antioxidant 20020.3; Sorbitol monooleate 0.7; Fine white carbon black 0.4.
7. Anti-fogging LDPE film formula
Formula (mass fraction, %):
LDPE96; Ethylene/vinyl acetate copolymer 4.
Processing conditions:
After film formation, corona treatment was carried out first, then immersed in SnCl4·5H2O and SnCl2·2H2O, rinsed with water, dried, and finally treated in 80℃ saturated steam for 100h.
Performance:
No fog surface, suitable for greenhouse, greenhouse, and car glass film.
