Preparation method of adhesive capable of resisting high temperature and low temperature at the same time

A technology of low temperature resistance and adhesive, which is applied in the field of adhesive preparation, can solve the problems of narrow application range, unsuitability for use at high temperature or low temperature, and achieve strong applicability, easy operation and simple preparation method Effect

Active Publication Date: 2022-08-05
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some deep eutectic solvents have strong viscosity, they are not suitable for use at high or low temperatures, so the application range is narrow

Method used

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  • Preparation method of adhesive capable of resisting high temperature and low temperature at the same time
  • Preparation method of adhesive capable of resisting high temperature and low temperature at the same time
  • Preparation method of adhesive capable of resisting high temperature and low temperature at the same time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-57

[0026] The preparation method of the high-temperature-resistant and low-temperature-resistant adhesive in Examples 1-57 comprises the following steps:

[0027] S1. Add the hydrogen bond donor and hydrogen bond acceptor into the round-bottomed flask in proportion, and heat and stir in an oil bath at 80°C for 2 hours to prepare a deep eutectic solvent;

[0028] S2. Mix the deep eutectic solvent prepared in step S1 with methanol in a ratio of 1:1 by mass, so that the deep eutectic solvent is dissolved in methanol, and then add 0.5% of the mass of the deep eutectic solvent as an initiator azodiiso Nitrile butyronitrile (AIBN) was heated to 70°C under anhydrous and oxygen-free conditions, and the polymerization reaction was carried out for 4h at the temperature, and then the methanol was evaporated to dryness to obtain a poly-low eutectic solvent, namely the adhesive;

[0029] Among them, the types and ratios of hydrogen bond donors and hydrogen bond acceptors are shown in Table 1:...

Embodiment 1-7

[0039] Carry out the viscosity performance test to the sample No. 1-7 of the embodiment

[0040] The first step is to test the adhesion properties of No. 1-7 samples to four materials: glass, plexiglass, PTFE and iron block at a temperature of 25°C and a humidity of 50-70% by using a tensile tester. The test results As shown in table 2:

[0041] Table 2 Adhesion properties of 7 kinds of adhesives to 4 kinds of materials

[0042]

[0043]

[0044] The test results show that 7 kinds of adhesives have good adhesion performance to 4 kinds of materials; samples No. 2 and No. 6 are preferred, that is, when the hydrogen bond donor is acrylic acid and the hydrogen bond acceptor is choline chloride, And when the molar ratio of acrylic acid to choline chloride is 3:1 or 20:1, it has high adhesion to glass, polytetrafluoroethylene, plexiglass and iron, and the comprehensive adhesion performance is good, which can be used at the same time. different substrates. Sample No. 7 is po...

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Abstract

The invention provides a preparation method of an adhesive that can withstand high temperature and low temperature at the same time. Reaction 2-4h, obtains deep eutectic solvent; Wherein, hydrogen bond donor is at least one in acrylic acid, methacrylic acid, crotonic acid and sorbic acid; Hydrogen bond acceptor is choline chloride, betaine and chloride At least one of ammonium; mix the deep eutectic solvent obtained in step S1 with methanol in a ratio of 1:1 by mass, and then add 0.5% azobisisobutyronitrile by mass of the deep eutectic solvent, in anhydrous In the absence of oxygen, heating to 70-80° C., holding the temperature for 2-4 h, and finally evaporating the methanol to obtain a poly-low eutectic solvent. The adhesive prepared by the invention can withstand high temperature and low temperature at the same time, is green and environmentally friendly, has strong applicability, has great potential in the field of adhesives, and the preparation method is simple and easy to operate, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of adhesive preparation, and more particularly, to a preparation method of an adhesive that can withstand high temperature and low temperature at the same time. Background technique [0002] Adhesive is a substance that can connect two materials together, and there are mainly three types of liquid, paste and solid. Adhesive plays an important role in production and life, and is one of the most important auxiliary materials. It is widely used in packaging operations and other fields. At present, the main components of adhesives are natural adhesives and artificial adhesives, of which natural adhesives mainly include biological adhesives and mineral adhesives, and biological adhesives are mainly starch, protein, dextrin, animal glue , shellac, leather glue, rosin, etc.; mineral binders are mainly asphalt and so on. Traditional natural adhesives have disadvantages such as poor viscosity, narrow application ra...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09J133/02C09J147/00C09J11/00C08F120/06C08F120/04C08F136/14
CPCC09J133/02C09J147/00C09J11/00C08F120/06C08F120/04C08F136/14
Inventor谭志坚董盛谊蔡昌湧吴双根余旺王朝云易永健曾粮斌汪洪鹰杨媛茹
OwnerINST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI