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EVA (ethylene vinyl acetate)/EAA (ethylene acrylic acid) waterproof and breathable composite film composition and preparation method thereof

A waterproof, breathable, composite membrane technology, applied in the field of attapulgite modified EVA/EAA waterproof and breathable composite membrane and its preparation, can solve the problems of insufficient elasticity, poor waterproof and breathable performance, etc.

Active Publication Date: 2018-04-13
创易斯(上海)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to develop a new type of attapulgite (ATP) modified EVA / EAA waterproof and breathable composite membrane, which solves the shortcomings of traditional waterproof and breathable membranes such as poor waterproof and breathable performance and insufficient elasticity, and can be widely used in fruits and vegetables, seafood, etc. Storage, transportation and other fields

Method used

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  • EVA (ethylene vinyl acetate)/EAA (ethylene acrylic acid) waterproof and breathable composite film composition and preparation method thereof
  • EVA (ethylene vinyl acetate)/EAA (ethylene acrylic acid) waterproof and breathable composite film composition and preparation method thereof
  • EVA (ethylene vinyl acetate)/EAA (ethylene acrylic acid) waterproof and breathable composite film composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment relates to a preparation method of attapulgite (ATP) modified EVA / EAA waterproof and breathable composite membrane composition, which specifically includes the following steps:

[0042] 1. Dosing ingredients according to the following weight ratio:

[0043]

[0044] The antioxidant is composed of 1076 and 168 in a weight ratio of 2:1;

[0045] 2. Attapulgite (ATP) modification treatment

[0046] Weigh 50g of attapulgite powder and add it to 500ml of deionized water, stir magnetically for 1 hour at room temperature until the attapulgite is completely dissolved in water, add 1.5g of sodium dodecylbenzenesulfonate, and heat up to 70°C After stirring for 5 hours, vacuum filter and wash 5 times with 200ml of deionized water and 100ml of absolute ethanol respectively, and dry at a temperature of 105°C to obtain modified attapulgite (ATP) powder, modified attapulgite (ATP) Crystal structure such as figure 1 shown, from figure 1 It can be seen that the modi...

Embodiment 2

[0052] This embodiment relates to a preparation method of attapulgite (ATP) modified EVA / EAA waterproof and breathable composite membrane composition, which specifically includes the following steps:

[0053] 1. Dosing ingredients according to the following weight ratio:

[0054]

[0055] The antioxidant is composed of 1076 and 168 in a weight ratio of 3:1.

[0056] 2. Attapulgite (ATP) modification treatment

[0057] Weigh 50 g of attapulgite powder and add it to 500 ml of deionized water, stir magnetically for 1 h at room temperature until attapulgite is completely dissolved in water, add 1.5 g of α-sulfomonocarboxylic acid and its derivatives (MES ), heated to 70°C and stirred for 5 hours, then vacuum-filtered and washed 5 times with 200ml of deionized water and 100ml of absolute ethanol respectively, and dried at a temperature of 105°C to obtain modified attapulgite (ATP) powder, modified Attapulgite (ATP) crystal structure such as figure 1 shown;

[0058] Three, th...

Embodiment 3

[0062] This embodiment relates to a preparation method of attapulgite (ATP) modified EVA / EAA waterproof and breathable composite membrane composition, which specifically includes the following steps:

[0063] 1. Dosing ingredients according to the following weight ratio:

[0064]

[0065] The antioxidant is composed of 1076 and 168 in a weight ratio of 2.5:1.

[0066] 2. Attapulgite (ATP) modification treatment

[0067] Weigh 50 g of attapulgite powder and add it to 500 ml of deionized water, stir magnetically for 1 hour at room temperature until the attapulgite is completely dissolved in water, and add 1.5 g of cetyltrimethylammonium bromide (CTAP) , after heating up to 70°C and stirring for 5 hours, vacuum filter and wash 5 times with 200ml of deionized water and 100ml of absolute ethanol respectively, and dry at 105°C to obtain modified attapulgite (ATP) powder, modified attapulgite The crystal structure of stick clay (ATP) is as follows: figure 1 shown;

[0068] Thr...

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Abstract

The invention discloses an attapulgite (ATP)-modified EVA (ethylene vinyl acetate) / EAA (ethylene acrylic acid) waterproof and breathable composite film and a preparation method thereof. The EVA / EAA waterproof and breathable composite film is prepared from the following components: EVA / EAA resin, modification attapulgite, a compatilizer, a lubricating agent, an antioxidant and an opening agent. Compared with the prior art, the EVA / EAA waterproof and breathable composite film has the following beneficial effects that by use of the porous special crystal structure of the attapulgite (ATP), by theaddition of the compatilizer, the lubricating agent and other processing adjuvants, the attapulgite (ATP)-modified EVA / EAA waterproof and breathable composite film is developed; the shortcomings of low waterproof property, low breathability, low elasticity and the like of the waterproof and breathable film due to non-uniform aperture of holes formed in an interface between inorganic mineral powder and the resin and stress concentration easily caused by the addition of the inorganic mineral powder are overcome; meanwhile, the composite film has the characteristics of ultraviolet prevention andcorrosion resistance, and can be widely applied to the fields such as fruits and vegetables, seafood storage, transportation and biological composting fermentation.

Description

technical field [0001] The invention relates to the field of waterproof and breathable composite membranes, in particular to an attapulgite (ATP) modified EVA / EAA waterproof and breathable composite membrane and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the increasing awareness of environmental protection, the storage and fresh-keeping packaging of fresh fruits, vegetables and seafood have become more and more important, and there is an increasing demand for fresh-keeping packaging materials that prolong the storage and shelf life of fruits, vegetables and seafood. Big. [0003] The harvesting of fruits, vegetables and seafood has obvious seasonality and regionality. During transportation, better storage conditions and a longer storage period are required to expand the supply time and scope of the market. Fresh-keeping methods used in the fresh-keeping field at home and abroad There are many kinds, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K9/04C08K7/26C08J5/18
Inventor 刘瑞来林皓胡家朋吴惠民徐婕赵瑨云吴芳芳
Owner 创易斯(上海)生物科技有限公司