Silver master batch for agricultural mulching films and preparation method of silver master batch

A technology of agricultural mulching film and silver, which is applied in the field of silver masterbatch for agricultural mulching film and its preparation, can solve the problems of being unsuitable for large-scale industrial production and increasing production costs, and achieve less volatile components, improve dispersion performance, and reduce production costs. Effect

Active Publication Date: 2019-01-08
CHANGZHOU HONGMEI PLASTIC MASTERBATCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will greatly increase the production cost and is not suitable for industrialized mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0028] The silver masterbatch (referred to as L1) for the agricultural mulching film of the present embodiment is made of the following components by weight: 30kg linear low density polyethylene (melt index 5g / 10min); 20kg powdered low density polyethylene (melt index 5g / 10min, average particle size 0.5mm); 40kg aluminum silver paste; 8kg polyethylene wax; 0.7kg zinc stearate; 1.3kg antioxidant 1010.

[0029] The preparation method of silver masterbatch for this agricultural plastic film is as follows:

[0030] ① Add zinc stearate, polyethylene wax and aluminum silver paste into the kneader according to the weight part, first stir and knead at a temperature of 75±1°C for 25min (the speed of the kneader is 40rpm), then cool down to room temperature, add Linear low-density polyethylene, powdered low-density polyethylene and antioxidant 1010, continue to stir and knead evenly.

[0031] ②Put the material obtained in step ① into a high-speed mixer, first mix at a low speed (40rpm)...

Embodiment 2～ Embodiment 5）

[0039] The silver masterbatches for agricultural mulching films (referred to as L2-L5) and their preparation methods in each embodiment are basically the same as those in Example 1, and the differences are shown in Table 1.

[0040] Table 1

[0041]

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Abstract

The invention discloses a silver master batch for agricultural mulching films and a preparation method of the silver master batch. The silver master batch is prepared from the following components inparts by weight: 25-35 parts of linear low-density polyethylene, 15-25 parts of low-density polyethylene, 35-45 parts of aluminum paste, 5-9 parts of polyethylene wax, 0.5-1 part of zinc stearate and1-2 parts of an antioxidant. The preparation method comprises the following steps: firstly adding the zinc stearate, the polyethylene wax and the aluminum paste into a kneading machine, carrying out kneading, adding the linear low-density polyethylene, the low-density polyethylene and the antioxidant, and carrying out continuous kneading; adding the components into a high-speed mixer, and carryingout low-speed mixing, high-speed mixing and low-speed mixing in sequence; and finally adding the components into a double-screw extruder, and carrying out extrusion mixing, bracing and water cooling,grain cutting and drying to obtain the silver master batch. The silver master batch is relatively low in production cost, relatively good in dispersion performance, fewer in volatile components, relatively high in concentration and suitable for preparing ultrathin silver mulching films and silver-black mulching films.

Description

technical field [0001] The invention belongs to the technical field of agricultural mulching films, and in particular relates to a silver masterbatch for agricultural mulching films and a preparation method thereof. Background technique [0002] Agricultural mulch film has multiple functions such as increasing soil temperature, maintaining soil moisture, maintaining soil structure, preventing pest invasion, preventing microbial diseases, and promoting plant growth, and has been widely used in agricultural production. [0003] Common agricultural mulch films include transparent mulch film, white mulch film, black mulch film, silver mulch film, red mulch film and green mulch film. In recent years, silver-black two-color plastic film (see documents CN106313824A, CN106541662A, CN107258407A) has developed particularly rapidly because of its outstanding effects in inhibiting weed growth and insect damage. [0004] Due to the development of agricultural mulch production technology...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K3/08C08K5/098C08K5/134C08K5/526C08J5/18C08J3/22
CPCC08J3/226C08J5/18C08J2323/08C08J2423/06C08J2423/08C08K5/098C08K5/1345C08K5/526C08K13/02C08K2003/0812
Inventor 楚强姚宇平姚峰
Owner CHANGZHOU HONGMEI PLASTIC MASTERBATCH
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