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Functionalized polyolefin long-acting trickle film and preparing method

A polyolefin and functionalization technology, which is applied in the field of functionalized polyolefin long-acting dripping film and its preparation, can solve the problems of no double bond reactive group, short dripping duration of dripping film, etc. Homopolymerization tendency, effect of inhibiting degradation or crosslinking reactions

Inactive Publication Date: 2006-08-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Synthesis of Polymaleic Anhydride Higher Fatty Alcohol Esters and Research on Surface Modification of Polyethylene" by Zhou Xie et al., Journal of Functional Polymers, 2003, 6(3): 347, and Chinese invention patent "An agricultural Long-acting non-drip film" (application number 02131397.6, publication number CN1485359A), all use the method of copolymerization to increase the molecular weight of the dripping agent to delay its loss in the dripping film, and the synthetic dripping agent has no double bond reactive group , like the traditional dripping agent, belongs to the internal addition type, and the dripping film dripping effect period of adding this kind of dripping agent is also shorter

Method used

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  • Functionalized polyolefin long-acting trickle film and preparing method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 0.19mol of polyether tetraol with a molecular weight of 840, 0.11mol of xylene, and 2×10 hydroquinone -4 mol, p-toluenesulfonic acid 2×10 -4 mol is added to the reactor equipped with stirrer, thermometer, reflux condenser, liquid dropping tube, nitrogen gas inlet tube and heating device, and 0.19mol maleic anhydride is dissolved in the liquid dropping tube filled with 0.49mol acetone , feed nitrogen, heat and stir, raise the temperature of the liquid in the reactor to 50°C, turn on the switch of the liquid dripping tube, start to add the liquid dropwise, the dropping time is 30 minutes, after the addition is completed, the temperature is raised to 100°C, and the reaction is 2 hours. After finishing the reaction, lower the temperature to 65° C., reduce the pressure to -0.08 MPa, remove the solvent, and obtain the functional monomer of the reactive functionalized polyolefin long-lasting dripping film.

[0024] 100 parts (mass) of low-density polyethylene (LDPE) are pre-i...

Embodiment 2

[0028] 1.875mol of polyether tetrahydric alcohol with a molecular weight of 1016, 9.075mol of toluene with p-dodecylbenzenesulfonic acid 1.5×10 -2 mol, hydroquinone 1.5×10 -2 mol is added to the reactor equipped with stirrer, thermometer, reflux condenser, liquid dripping tube, nitrogen pouring tube and heating device, 1.875mol of acrylic acid solution is placed in the liquid dripping tube, nitrogen gas is introduced, heated and stirred , raise the temperature of the liquid in the reactor to 50°C, turn on the switch of the liquid dripping tube, and start to add the liquid dropwise for 40 minutes. °C, reduce the pressure to -0.12MPa, remove the mixed solvent, and obtain the functional monomer of the reactive functionalized polyolefin long-term dripping film.

[0029] 100 parts (mass) of ethylene-1-butene copolymer, butene content 5% (mass), in 60 The Co device is pre-irradiated with γ-rays, and the pre-irradiation dose is 80KGy.

[0030] The pre-irradiated ethylene-1-butene ...

Embodiment 3

[0033] 2 mol of polyether tetrahydric alcohol with a molecular weight of 488, 3 mol of xylene, and 2×10 p-dodecylbenzenesulfonic acid -3 mol, hydroquinone 2×10 -3 mol is added to the reactor equipped with stirrer, thermometer, reflux condenser, liquid dropping tube, nitrogen pouring tube and heating device, and 2 mol of maleic anhydride is dissolved in the liquid dropping tube filled with 6.075 mol of acetone , feed nitrogen, heat and stir, raise the temperature of the liquid in the reactor to 50°C, turn on the switch of the liquid dripping tube, start to add the liquid dropwise, the dropwise time is 55 minutes, after the dropwise addition, raise the temperature to 85°C, react for 8 hours, and end For the reaction, the temperature is lowered to 60°C, the pressure is reduced to -0.1MPa, and the solvent is removed to obtain a functional monomer of a reactive functionalized polyolefin long-lasting dripping film.

[0034] 100 parts (mass) of ethylene-1-octene copolymer with an oc...

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Abstract

This invention relates to a functional polyolefin long time effective flow film and its preparation method, which applies the polyether tetra-basic alcohol to be reacted with maleic anhydride or crylic acid to get functional monomers, pre-radiates the polyolefin resin with beta or gamma rays, then carries out smelt graft reaction to the processed polyolefin resin, the functional monomers and electron donating reagent then to blow-molding the graft product to a functional polyolefin long time effective flow film and the valid time is 25-45 days and 13-16 months.

Description

technical field [0001] The invention relates to a functionalized polyolefin long-lasting dripping membrane and a preparation method thereof. Background technique [0002] Polyethylene, ethylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-1-octene copolymer, ethylene-vinyl acetate copolymer, polypropylene, and poly1-butene have good comprehensive properties The low-cost general-purpose polymer materials, but because of their non-polar characteristics to a certain extent, limit the expansion of their application range. The method of reactive extrusion is used to graft monomer molecules containing polar groups into the polymer. By using the polarity and reactivity of the polar group on the molecular chain of the object, many new properties can be given to the polymer material, such as cohesiveness, hydrophilicity, dyeability, aging resistance, antistatic property, etc. [0003] The non-polar polyolefin film has poor hydrophilicity, and a layer of white water drop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/28C08L51/06C08K3/34B29C47/40B29C49/00
Inventor 姚占海殷敬华宋永贤宋玉春姜国伟
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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