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A kind of coating agent and its preparation method and application

A film coating agent and formula technology, applied in the field of film coating agent and its preparation, can solve the problems of loss of integrity, dry cracking, etc.

Inactive Publication Date: 2017-08-01
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if left untreated, it will dry out and lose its integrity after losing moisture

Method used

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  • A kind of coating agent and its preparation method and application
  • A kind of coating agent and its preparation method and application
  • A kind of coating agent and its preparation method and application

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0020] The preparation method of film coating agent of the present invention comprises pretreatment, preparation steps, specifically comprises:

[0021] A. Pre-processing:

[0022] Method 1: Weigh the raw materials konjac glucomannan and chitosan in the formula ratio, add konjac glucomannan into distilled water with a solid-liquid volume ratio of 99 times, keep stirring in a water bath at 40-50°C for 10-30 minutes and set aside Add chitosan to the acid solution with a solid-to-liquid volume ratio of 49 times, and keep stirring in a water bath at 40-50°C for 20-40 minutes for later use;

[0023] Method 2: Weigh the raw materials konjac glucomannan, chitosan and soybean protein isolate in the formula ratio, add konjac glucomannan into distilled water with a solid-liquid volume ratio of 99 times, and keep stirring in a water bath at 40~50°C 10-30min for standby; chitosan was added to the acid solution with a solid-liquid volume ratio of 49 times, and kept stirring in a water bat...

Embodiment 1

[0044] Weigh 1g of konjac glucomannan and 2g of chitosan as raw materials, add konjac glucomannan into distilled water with a solid-to-liquid volume ratio of 1:99, and keep stirring in a water bath at 40-45°C for 30 minutes for later use; chitosan is added to In the acetic acid solution with a solid-to-liquid volume ratio of 2:98, keep stirring in a water bath at 45-50°C for 20 minutes for later use; mix each raw material solution and add 8g of plasticizer, and keep stirring in a water bath at 65-70°C for 20 minutes to obtain the target product.

Embodiment 2

[0046] Weigh 1g of konjac glucomannan and 2g of chitosan as raw materials, add konjac glucomannan into distilled water with a solid-to-liquid volume ratio of 1:99, keep stirring in a water bath at 45-50°C for 10 minutes for later use; add chitosan to In the hydrochloric acid solution with a solid-to-liquid volume ratio of 2:98, keep stirring in a water bath at 40-45°C for 40 minutes for later use; mix each raw material solution and add 8g of plasticizer, and keep stirring in a water bath at 60-70°C for 20-40 minutes to obtain the target product .

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Abstract

The invention discloses a film coating agent as well as a preparation method and an application thereof. The film coating agent comprises, by weight, 14-56 parts of konjac glucomannan, 14-56 parts of chitosan and 0-30 parts of a plasticizer, and the pH value is in a range of 3-4. The preparation method comprises a pretreatment step and a preparation step. The film coating agent is applied to preparation of films for preventing weathering, photochemical decomposition, erosion and corrosion of wood. The protective films are prepared from the konjac glucomannan and the chitosan, are applied to weathering prevention treatment of flooded ancient wood and protect exposed ancient wood, the ancient wood can reach the ideal effect in further reinforcement treatment, a foundation is laid for protection of sites and cultural relics, and a theoretical basis and technical support are provided for application of a weathering prevention technology to cultural relic protection.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a film coating agent and its preparation method and application. Background technique [0002] The Jianchuan Haimenkou site is located about 1 km northwest of Haimenkou Village, Diannan Town, Jianchuan County. The GPS coordinates are 99°33´~100°33´ east longitude, 26°12´~26°41´ north latitude, about 8 kilometers away from Jianchuan County. It is located on the northwest bank of Haiwei River, the outlet in the southwest of Jianhu Lake. [0003] In December 2007, with the approval of the State Administration of Cultural Heritage, the Yunnan Provincial Institute of Cultural Relics and Archaeology and the Jianchuan Culture and Sports Bureau conducted the third excavation, with an excavation area of ​​1,395 square meters. A large area of ​​wooden building remains and extremely rich cultural relics were found. According to 14C dating, it is about 5300-2500 years ago. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D105/00C09D105/08C09D5/08C09D7/12B27K5/02B27K3/02B27K3/50
CPCB27K3/0292B27K3/50B27K5/02C08L2205/03C09D5/08C09D7/63C09D105/08C09D189/00C08L5/00C08L5/08
Inventor 邱坚夏炎邓艳罗蓓李君伍建玲
Owner SOUTHWEST FORESTRY UNIVERSITY