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A kind of resin for dripping film and its preparation method and application

A dripping film and resin technology is applied in the field of resin for dripping film and its preparation. Effect

Active Publication Date: 2019-03-01
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

At present, the existing domestic additive production technology is powerless to solve the problem of long-term dripping, while the coating dripping technology is not yet fully mature

Method used

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  • A kind of resin for dripping film and its preparation method and application
  • A kind of resin for dripping film and its preparation method and application
  • A kind of resin for dripping film and its preparation method and application

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Effect test

preparation example Construction

[0059] The present invention also provides a preparation method of resin for dripping film, the steps are as follows:

[0060] Step 1. Preparation of pre-irradiated polymer resin

[0061] use 60 Co as the radiation source, under the air atmosphere, the polymer resin is pre-irradiated with γ-rays, and the pre-irradiation dose ranges from 10 to 60 kGy to obtain the pre-irradiated polymer resin;

[0062] Or use an electron accelerator as the irradiation source, and pre-irradiate the polymer resin with β-rays in an air atmosphere, and the pre-irradiation dose ranges from 10 to 60 kGy to obtain the pre-irradiated polymer resin;

[0063] Wherein, polymer resin is the mixing of one or more of low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer in any proportion, when adopting multiple mixing in any proportion, in subsequent steps When using pre-irradiated polymer resins, the same pre-irradiated polymer resins can be used in different steps, o...

Embodiment 1

[0094] Step 1. Under normal temperature, normal pressure and air conditions, pre-irradiate the ethylene-1-butene copolymer resin with a butene mass percentage content of 6.7% with β-rays of an electron accelerator, and the dose of the pre-irradiation treatment is 10kGy , to obtain pre-irradiated ethylene-1-butene copolymer resin;

[0095] Step 2. Add the pre-irradiated ethylene-1-butene copolymer resin and diglyceryl monostearic acid monoacrylic acid diester obtained in step 1 into a high-speed mixer at a mass ratio of 100:3, and mix them for 3 minutes in a high-speed mixer , added to the SHJ30 reactive twin-screw extruder system, the aspect ratio is 44, the temperature from the feed to the die is 160, 170, 180, 190, 195, 195, 195, 190 ° C, extrusion, pulling Strips, cooling, granulation to obtain grafted resin;

[0096] Step 3, mix Tween60, maleic anhydride, p-toluenesulfonic acid, xylene and p-hydroxyanisole in a molar ratio of 0.19:0.19:10 -3 :0.7:10 -3 Add it into the r...

Embodiment 2

[0103] Step 1. Under normal temperature, normal pressure and air conditions, use ethylene-1-hexene copolymer resin with a hexene mass percentage content of 8% 60 The gamma ray pre-irradiation treatment of Co, the dose of pre-irradiation treatment is 60kGy, obtains pre-irradiation ethylene-1-hexene copolymer resin;

[0104] Step 2. Add the pre-irradiated ethylene-1-hexene copolymer resin weight parts obtained in step 1 and diglyceryl monostearic acid monoacrylic acid diester into a high-speed mixer at a mass ratio of 100:5, and mix through a high-speed mixer After 3 minutes, add it to the SHJ30 reactive twin-screw extruder system, the aspect ratio is 44, the temperature from the feed to the die is 160, 175, 185, 190, 190, 195, 195, 190 ° C, extruded , stretching, cooling, and granulating to obtain grafted resin;

[0105] Step 3, mix Tween60, maleic anhydride, p-toluenesulfonic acid, toluene and p-hydroxyanisole in a molar ratio of 0.25:0.25:4×10 -3 :1.1:4×10 -3 Add it into t...

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Abstract

The invention relates to resin for a dripping film, and a preparation method and application thereof, belonging to the technical field of agricultural materials. The objective of the invention is to overcome technical problems in preparation of dripping films with low cost and long dripping period. The resin for the dripping film in the invention is composed of, by weight, 81 to 95 parts of pre-irradiation polymer resin, 1 to 10 parts of grafted resin, 5 to 15 parts of functional monomers, 2 to 15 parts of a reverse graft, 1 to 5 parts of polyethylene-polystyrene resin and 2 to 3 parts of an electron-donating agent, wherein the weight parts of the pre-irradiation polymer resin, the grafted resin, the polyethylene-polystyrene resin and the reverse graft sum to 100. The invention further provides a preparation method for the resin and application of the resin as a dripping-film material. Results of an accelerated dripping experiment at 60 DEGC and an actual outdoor in-greenhouse experiment show that a dripping film prepared from the resin has a dripping period of 29 to 38 days and 12 to 14 months, respectively.

Description

technical field [0001] The invention relates to a resin for dripping film and its preparation method and application, belonging to the technical field of agricultural materials. Background technique [0002] Resins for dripping films are widely used in agricultural plastic greenhouses and have made important contributions to agricultural development. With the promotion area of ​​my country's agricultural plastic greenhouse application technology increasing year by year, its role in increasing agricultural production and income will become more and more important. [0003] The resin used for dripping film is not hydrophilic. In my country, the traditional dripping technology adopts the method of adding dripping agent in the resin to solve the hydrophilicity problem in the application of agricultural plastic greenhouses. However, due to the large difference in polarity between the dripping agent and the resin, migration and surface loss are prone to occur, so the dripping fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00C08F291/06C08F222/06C08L23/06C08L51/00C08J3/28
CPCC08F255/02C08F257/02C08F263/04C08F285/00C08J3/28C08J5/18C08J2323/06C08J2323/08C08J2451/00C08L23/06C08L2203/16C08L2207/066C08F222/06C08L51/003
Inventor 姚占海李文斐郭其阳张健夫杨历川
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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