Degradable master batch for plastic films, method for preparing degradable master batch and application thereof
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A technology for degrading masterbatches and plastic films, which is applied in the field of plastic films to achieve good compatibility
Active Publication Date: 2017-03-08
广州索润科技股份有限公司
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The PE masterbatch reported in the above-mentioned invention patent is only suitable for a specific substrate. So far, there is no combination of amphiphilic polymer compatibilizer and degradation to prepare a plastic film degradable masterbatch for different substrates. material report
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Embodiment 1
[0026] (1) Treatment of MWCNT-modified PHB: The surface of multi-walled carbon nanotubes (MWCNT) was organically treated with a silane coupling agent. First, heat the absolute ethanol solution of the silane coupling agent to 55° C. in a water bath, stir evenly, add measured MWCNT, filter while hot after stirring, and obtain the modified MWCNT after drying. PHB and modified MWCNT were mixed in a mass ratio of 98:2, and then melt-extruded to obtain MWCNT-modified PHB.
[0027] (2) Low density polyethylene, Et-MAH-EA terpolymer, TAS-2A dispersant, MWCNT modified PHB, iron stearate, plasticizer (DOP) with 50:6:5:30: The masterbatch is prepared by mixing in a high-speed mixer for 30 minutes in a mass percentage ratio of 4:5, and then melting and blending in an internal mixer at 120-160°C, and discharging after mixing evenly.
[0028] (3) The plastic film prepared by adding 2% of the degradable masterbatch of the plastic film obtained in step (2) to the polyester has a degradation ...
Embodiment 2
[0030] (1) The treatment of MWCNT modified PHB is the same as in Example 1.
[0031] (2) A composition of linear low-density polyethylene and low-density polyethylene with a mass ratio of 1:1, anhydride-modified SEBS, TAS-2A dispersant, MWCNT-modified PHB, iron stearate, plasticizer (DOP ) with a mass percentage ratio of 80:2:1:14:2:1, mixed in a high-speed mixer for 30 minutes, then melted and blended in an internal mixer at 120-160°C, and discharged after mixing evenly. of the masterbatch.
[0032] (3) The plastic film prepared by adding the degradable masterbatch of plastic film obtained in step (2) to polyester at 2% has a degradation rate of 85% after being buried in soil for 10 days at room temperature.
Embodiment 3
[0034] (1) The treatment of MWCNT modified PHB is the same as in Example 1.
[0035] (2) The composition of low-density polyethylene and high-density polyethylene mixed at a mass ratio of 1:1, MAH-g-PS, TAS-2A dispersant, MWCNT modified PHB, iron stearate, plasticizer (DBP ) with a mass percentage ratio of 60:10:5:20:3:2, mixed in a high-speed mixer for 30 minutes, then melted and blended in an internal mixer at 120-160°C, and discharged after mixing evenly. of the masterbatch.
[0036] (3) Add the degradable masterbatch of plastic film obtained in step (2) to the plastic film prepared by adding 2% to polycarbonate, and the degradation rate after being buried in soil for 10 days at room temperature is 82%.
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Abstract
The invention belongs to the technical field of plastic films, and discloses degradable master batch for plastic films, a method for preparing the degradable master batch and application of the degradable master batch to preparing the degradable plastic films. The degradable master batch for the plastic films comprises, by weight, 50-80% of matrix resin, 2-10% of reaction type compatilizers, 0.5-5% of dispersing agents, 14-30% of NWCNT (multi-walled carbon nano-tube)-modified PHB (poly-beta-hydroxybutyrate), 2-7% of iron stearate and 1-5% of plasticizers. The total quantity of components is 100%. The method includes uniformly mixing the components with one another to obtain mixtures; carrying out melting extrusion on the mixtures to obtain the degradable master batch. The degradable master batch, the method and the application have the advantages that the degradable master batch not only is excellent in compatibility to non-polar polymers such as polyethylene and polypropylene, but also can be applied to polar polymers such as polyester, polycarbonate and ABS (acrylonitrile butadiene styrene); the degradable master batch has photo-degradation and biodegradation performance and can be applied to preparing the degradable plastic films, accordingly, the films can be automatically decomposed under oxygen-rich and microorganism or natural illumination conditions, and discarded films can be degraded and digested.
Description
technical field [0001] The invention belongs to the technical field of plastic films, and in particular relates to a plastic film degradable masterbatch, a preparation method thereof and an application in preparing plastic degradable films. Background technique [0002] Agricultural plastic films are mainly greenhouse films and mulch films, and also include sunshade nets, insect nets, forage films, and agricultural non-woven fabrics. Plastic films are widely used as covering materials for solar greenhouses, plastic greenhouses and various plastic sheds. The amount of plastic film is increasing day by day, and its degradation time is as long as 200-300 years. Its use has caused serious "white pollution" to the ecological environment of our country. At present, there are two ways to solve the white pollution of plastic film in the world, one is to recycle plastic film, and the other is to develop degradable agricultural film. However, due to the large amount and covering are...
Claims
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