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Functional agglomerate of expandability plastic and agglomerate of maintains film for farm crops as well as its preparing method

A functional masterbatch and expandable technology, applied in the field of plastic functional masterbatch and its preparation, can solve the problems of low investment in equipment, no ventilation, no ventilation, etc., to improve output and quality, facilitate waste disposal, and avoid easy to be damage effect

Inactive Publication Date: 2004-12-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the film has many functions and can be adjusted, it has no pollution to the environment, less investment in equipment, and is convenient for large-scale production, but the composite functional additive layer is easily damaged, cannot function for a long time, and has no air-permeable and moisture-permeable functions.
Therefore, in order to obtain a new type of agricultural film that is not only breathable and moisture-permeable, but also has the functions of turning light, promoting and degrading, and has a high cost performance ratio, it is first necessary to have a corresponding plastic functional masterbatch, but unfortunately there is no such thing as yet. This kind of masterbatch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 17 parts of low-density polyethylene (MI=2g / 10min), 6 parts of high-density polyethylene (MI=1.8g / 10min), 3 parts of ethylene-vinyl acetate copolymer (VA content ≥ 10%), starch 8 parts, 5 parts of polyvinyl alcohol, 0.5 parts of europium activator of yttrium vanadate, 3 parts of waste protein, 0.01 part of 4,4,-bis(2-benzoxazolyl)stilbene, 0.05 part of benzoin dimethyl ether 1 part, 1 part of azodicarbonamide, 0.5 part of zinc stearate, 0.5 part of calcium stearate, 1 part of calcium chloride, 1 part of silicone oil, 0.01 part of carbon black, 0.5 part of low molecular weight polyethylene, add to the internal mixer , mixing and banburying at a temperature of 125°C for 8 minutes;

[0032] (2) Use a single-screw extruder to extrude and pelletize the melted rubber material after mixing at a temperature of 100-140°C and a screw speed of 30 rpm to obtain expandable plastic functional masterbatches.

Embodiment 2

[0034] 30 parts of the expandable plastic functional masterbatch and low-density polyethylene (MI=5g / 10min) prepared in Example 1, 20 parts of activated calcium carbonate with a particle size of 0.01-30um, and 5 parts of activated zinc oxide with a particle size of 0.01-30um Parts are added to a high-speed mixer and mixed evenly, and then added to a twin-screw extruder, extruded and granulated at an extrusion temperature of 100-160°C and a screw speed of 50 rpm to obtain a crop maintenance film masterbatch.

[0035] If the crop maintenance film masterbatch is mixed with low-density polyethylene (MI=2g / 10min) in a certain proportion, the crop maintenance film can be made by blow molding with a single-screw extruder according to the conventional process. The crop maintenance film is used as bagging for pear trees and pomelo trees, which can effectively prevent pests and diseases, improve fruit quality, and can also be used as fresh-keeping bags for various fruits such as oranges ...

Embodiment 3

[0037] (1) Low-density polyethylene (MI=5g / 10min) 10 parts, high density poly 10 parts of ethylene (MI=5g / 10min), 10 parts of starch, 5 parts of polyvinyl alcohol, 1.0 parts of europium activator of yttrium vanadate, 8 parts of waste protein, 4,4,-bis(2-benzoxazolyl ) stilbene 0.02 part, zinc acetylacetonate 0.02 part, benzoin dimethyl ether 0.05 part, azodicarbonamide 1.8 part, calcium stearate 0.5 part, lauric acid 0.3 part, dibutyltin maleate 0.6 part, chlorine Add 3 parts of calcium oxide, 0.01 part of carbon black, 1.0 part of low molecular weight polyethylene, and 0.5 part of silicone oil into the internal mixer, and mix and banbury at a constant temperature of 120 ° C for 15 minutes;

[0038] (2) Use a single-screw extruder to extrude and pelletize the melted rubber material after mixing at a temperature of 100-140°C and a screw speed of 40 rpm to obtain expandable plastic functional master batches.

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Abstract

A process for preparing functional foamable plastic mother particles and the mother particles for nursing agricultural crops includes proportioning basic plastic material, plastic degradant, chemical foaming agent, hydroscopic agent, optical converting agent, colouring agent and assistant, constant-temp banburying, extruding out to obtain said foamable plastic particles, adding basic plastic material and inorganic filler, mixing, fusing and extruding out to obtain the mother particles for the film to merse agricultural crops. The said nursing film features its fine capillary tubes.

Description

1. Technical field [0001] The invention belongs to the technical field of plastic functional masterbatch and its preparation, and specifically relates to an expandable plastic functional masterbatch and a crop maintenance film masterbatch, both of which can be used to prepare crop maintenance film. 2. Background technology [0002] Although plastic functional masterbatch is a new type of plastic molding processing aid developed in recent years, it has developed rapidly. At present, there are many kinds of plastic functional masterbatches: color masterbatch, filling masterbatch, flame retardant masterbatch, Antistatic masterbatch, antibacterial masterbatch, anti-fog masterbatch, longevity masterbatch, optical conversion masterbatch, anti-copper masterbatch, anti-mildew masterbatch, cooling masterbatch, silver masterbatch, fresh-keeping masterbatch, weeding masterbatch, degradation Masterbatch, foam masterbatch, color agricultural film masterbatch, plastic film masterbatch, et...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08J5/18C08K13/02C08L23/00
Inventor 吴智华
Owner SICHUAN UNIV
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