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A kind of preparation method of aging-resistant breathable anti-fogging horticultural film

An anti-aging and horticultural technology, applied in the field of horticultural materials, can solve the problems of poor anti-fogging performance and achieve the effect of excellent comprehensive performance

Active Publication Date: 2018-12-07
江苏东方绿洲环境建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above three materials are widely used in various fields due to their respective characteristics. For the membrane materials in the horticultural field, due to the special use environment, there are specific requirements. For example, good anti-aging performance is first required, and at the same time It can also have good heat preservation and anti-fog performance, etc., while the anti-aging performance of commonly used horticultural films can meet certain requirements, but the anti-fog performance is poor, which will have a certain impact on the seedlings during use. , so it is necessary to develop a horticultural film with excellent comprehensive performance

Method used

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  • A kind of preparation method of aging-resistant breathable anti-fogging horticultural film

Examples

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Embodiment 1

[0022] A method for preparing an aging-resistant, breathable and anti-fogging gardening film, comprising the following steps:

[0023] Step 1, 30 parts by weight of PP, 5 parts of PET, 20 parts of modified LDPE, 2 parts of polyester fiber and 0.5 part of silicon dioxide are added to the mixing mixer and stirred evenly, and the stirring speed is 80 rpm , stirred for 30 minutes to obtain mixture 1, wherein the preparation method of modified LDPE is to heat 10 parts by weight of LDPE and 3 parts of acrylate to 50 ° C under a vacuum of 0.02 MPa, stir for 30 minutes, and then Add 2 parts of dimethylaminoethyl acrylate, keep the vacuum, raise the temperature to 70°C, and keep it for 10 minutes, cool down to 50°C, add 2 parts of stearic acid, and stir for 30 minutes to obtain modified LDPE;

[0024] Step 2, transfer the mixture to the reactor, add 0.5 part of methyl methacrylate-butadiene-styrene copolymer in parts by weight, 2 parts of ethyl acrylate, 0.5 part of phenyl phosphite, ...

Embodiment 2

[0027] A method for preparing an aging-resistant, breathable and anti-fogging gardening film, comprising the following steps:

[0028] Step 1, 32 parts by weight of PP, 6 parts of PET, 25 parts of modified LDPE, 3 parts of polyester fiber and 0.6 part of nano silicon dioxide are added to the mixing mixer and stirred evenly, and the stirring speed is 83 rpm Minutes, stirring time 35 minutes, to obtain mixture 1, wherein the preparation method of modified LDPE is to heat 12 parts of LDPE and 4 parts of acrylate in parts by weight to 53 ° C under a vacuum of 0.03 Pa, and stir for 35 minutes. Then add 3 parts of dimethylaminoethyl acrylate, keep the vacuum, raise the temperature to 73°C, and keep it for 13 minutes, cool down to 55°C, add 3 parts of stearic acid, and stir for 33 minutes to obtain modified LDPE;

[0029] Step 2, transfer the mixture to the reactor, add 0.6 parts of methyl methacrylate-butadiene-styrene copolymer in parts by weight, 3 parts of ethyl acrylate, 0.6 par...

Embodiment 3

[0032] A method for preparing an aging-resistant, breathable and anti-fogging gardening film, comprising the following steps:

[0033] Step 1, 36 parts by weight of PP, 8 parts of PET, 29 parts of modified LDPE, 4 parts of polyester fiber and 0.7 part of nano silicon dioxide are added to the mixing mixer and stirred evenly, and the stirring speed is 90 rpm Minutes, stirring time 36 minutes, to obtain mixture 1, wherein the preparation method of modified LDPE is to heat 18 parts of LDPE and 7 parts of acrylate in parts by weight to 55 ° C under a vacuum of 0.03 MPa, and stir for 45 minutes. Then add 3 parts of dimethylaminoethyl acrylate, keep the vacuum, raise the temperature to 75°C, and keep it for 18 minutes, cool down to 57°C, add 4 parts of stearic acid, and stir for 38 minutes to obtain modified LDPE;

[0034] Step 2, transfer the mixture to the reactor, add 0.7 parts of methyl methacrylate-butadiene-styrene copolymer in parts by weight, 3 parts of ethyl acrylate, 0.8 pa...

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Abstract

The invention discloses an anti-aging gas-permeable and anti-fogging gardening film preparation method, which comprises: adding PP, PET, modified LDPE, polyester fibers and silica into a mixing stirrer, and uniformly stirring and mixing to obtain a mixture 1; transferring the mixture 1 into a reaction kettle, adding a methyl methacrylate-butadiene-styrene copolymer, ethyl acrylate, phenyl phenyl phosphite, diethyl phosphite and polyethylene glycol, heating to a temperature of 60-70 DEG C within 40-60 min under a vacuum condition, and carrying out a stirring reaction to obtain a mixture 2; and adding an antioxidant, an anti-ultraviolet absorber, disodium ethylenediaminetetraacetic acid and barium stearate to the mixture 2, uniformly mixing, and carrying out film blowing with a plastic film blower to obtain the anti-aging gas-permeable and anti-fogging gardening film. According to the present invention, the anti-aging gas-permeable and anti-fogging gardening film obtained through the preparation method has advantages of good mechanical property, good gas permeation, good fogging resistance, good anti-aging performance and the like, wherein the usability of the film is improved.

Description

technical field [0001] The invention belongs to the field of horticultural materials, and in particular relates to a preparation method of an aging-resistant, breathable and anti-fogging horticultural film. Background technique [0002] Polypropylene (PP) is a thermoplastic resin obtained by polymerizing propylene. Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only 0.90-0.91g / cm 3 , is currently one of the lightest varieties of all plastics. It is particularly stable to water, the water absorption rate in water is only 0.01%, and the molecular weight is about 80,000-150,000. Good formability, but due to the large shrinkage rate (1%-2.5%), thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy, and the surface gloss of the product is good. The chemical stability of polypropylene is very good, except that it can be corroded by concentrated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L67/02C08L51/06C08L67/00C08L51/04C08K13/02C08K3/36C08K5/526C08K5/524C08K5/098
CPCC08J5/18C08J2323/12C08J2467/02C08K2201/011C08L23/12C08L2203/16C08L2205/02C08L2205/035C08L2205/16C08L67/02C08L51/06C08L67/00C08L51/04C08K13/02C08K3/36C08K5/526C08K5/524C08K5/098
Inventor 秦文斌
Owner 江苏东方绿洲环境建设有限公司