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Modified adhesive for paper cultural relics and preparation method of modified adhesive

A technology for paper cultural relics and adhesives, applied in the direction of adhesive types, amylose/amylopectin adhesives, adhesives, etc., can solve the problem of easy hydrolysis, acidification, ratio and performance instability of adhesives and other problems to achieve a good feel

Inactive Publication Date: 2019-05-17
NANJING MUSEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Carry out scientific research on the raw materials of adhesives used for paper cultural relics, explore the manufacturing process of adhesives, form standardized raw material formulas, production processes and corresponding application effect evaluation specifications; develop modified adhesives for paper cultural relics, It overcomes the shortcomings of traditional adhesives such as easy hydrolysis and acidification, strong randomness in the preparation process, unstable proportioning and performance, and comprehensively improves its comprehensive performance.

Method used

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  • Modified adhesive for paper cultural relics and preparation method of modified adhesive
  • Modified adhesive for paper cultural relics and preparation method of modified adhesive
  • Modified adhesive for paper cultural relics and preparation method of modified adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Discussion on the preparation process of modified adhesives containing additives in different proportions and tests on the pH, viscosity, peeling degree, mildew resistance, and practical application effects of the adhesive

[0045] 1. Experimental materials and instruments: wheat starch (Baihe brand); ultrapure water; additives; rotary stirring heater (lesavcier); Clean PH30 portable pH value tester; viscosity meter (RST rheometer); automatic tensile tester).

[0046] 2. Preparation of modified adhesive

[0047] Through literature review, investigation and interviews, we learned about the practical experience of professionals who have been engaged in the protection of paper cultural relics for many years. At the same time, combined with multiple process tests, it was initially determined that the mass ratio of starch and ultrapure water was 1:5, and heated in a rotating stirring heater. Prepare for 30 minutes to completely gelatinize the starch in the adhesi...

Embodiment 2

[0077] Embodiment 2: performance test of modified adhesive coated rice paper

[0078] 1. Experimental materials and instruments: wheat starch (Baihe brand); ultrapure water; additives (compounds that can react with hydroxyl, carboxyl and other groups); cotton four-foot cotton rice paper (Wangliuji brand); Refractometer (MIT); Horizontal Tensile Tester (TMI); Tear Tester (Tinius&Olsen); Dynamic Contact Angle Tester (DAT); Pure Water Tester (Elix3); Portable pH Tester (Clean PH30); Portable Colorimeter (HPG-2132); Constant temperature and humidity test chamber (RMF-115).

[0079] 2. Preparation of modified adhesive

[0080] Using the preparation method in Example 1, sample Nos. 1-6 adhesives were obtained.

[0081] 3. Preparation of coated rice paper samples

[0082] 1) Dilute No. 1-6 adhesives to 50% concentration respectively. Use a pad pen to evenly coat one side of the cotton four-foot cotton continuous rice paper, collapse it on the table, take it off after the rice pap...

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PUM

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Abstract

The invention discloses a modified adhesive for paper cultural relics. The modified adhesive is prepared from components in parts by weight as follows: 90-99.5 parts of wheat starch, 0.5-10 parts of amodified additive and 450-900 parts of water, wherein the content of amylose in the wheat starch is 15%-30% and the content of amylopectin is 70%-85%; the modified additive is one or more of compounds capable of reacting with hydroxyl and / or carboxyl. The modified adhesive for paper cultural relics has improved pH value, is medium alkaline and has moderate viscosity and moderate stripping degree,certain mold-proof capacity and better actual use hand feeling, and besides, coated paper has better tensile strength, tear resistance, folding endurance, aging strength, paper pH value, contact angle and aging performance.

Description

technical field [0001] The invention relates to an adhesive composition, in particular to a modified adhesive for paper cultural relics. The invention also relates to a method for preparing the adhesive. Background technique [0002] Paper cultural relics are organic cultural relics, which are easily affected by factors such as light, temperature and humidity, harmful gases, insects, rats, and molds, resulting in diseases. Traditional restoration technology can effectively protect paper cultural relics. The restored and mounted paper cultural relics can not only remove some hidden dangers and prolong their vitality; but also make paper cultural relics more firm and beautiful, which is convenient for preservation and exhibit. [0003] my country has a long history of restoration and mounting of paper cultural relics. According to the earliest unearthed objects that can be seen so far, mounted silk paintings have appeared as early as 1500 years ago, and there are documents a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/12C09J11/00
Inventor 陈潇俐云悦张诺陈琦陈虹利张金萍何伟俊景宜何凯翔彭维娜
Owner NANJING MUSEUM
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