Environment-friendly adhesive

An adhesive and environmentally friendly technology, applied in the directions of adhesive additives, adhesive types, starch-derived adhesives, etc. Cohesive, fast drying effect

Inactive Publication Date: 2018-03-27
枞阳县新天地高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In related technologies, due to the unreasonable formulation of the adhesive, the ambient temperature has a great influence on the performance of the adhesive during use. For example, when the ambient temperature is low, it is easy to produce unglued or cemented objects that are easy to fall off, etc. Phenomenon, thus affecting the product quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of environmental protection adhesive, comprises the following steps:

[0019] (1) Phenolic modification of starch: put starch, phenol, sodium hydroxide and water into the reaction kettle in turn, heat to 80°C, stir at constant temperature at 1500r / min for 2 hours, then adjust the temperature to 55°C, Stir at a speed of 500r / min for 30min, cool naturally to room temperature, and obtain a phenolized starch solution for use; the mixing mass ratio of the starch, phenol, sodium hydroxide and water is 12:1.3:2.5:40;

[0020] (2) Modified rosin resin: Add rosin resin to the reaction kettle, and then add catalyst, the amount of catalyst is 0.15% of the mass of rosin resin, control the catalyst to be added dropwise within 50 minutes; stir to raise the temperature to 105°C, add pentaerythritol, pentaerythritol Be 1:20 with the mass ratio of rosin resin, keep temperature and condense and reflux 1.5 hours, obtain mixture A; Described catalyzer is tetraethylammonium bromide; ...

Embodiment 2

[0028] A kind of environmental protection adhesive, comprises the following steps:

[0029] (1) Phenolic modification of starch: put starch, phenol, sodium hydroxide and water into the reaction kettle in turn, heat to 90°C, stir at constant temperature at 1500r / min for 2 hours, then adjust the temperature to 60°C, Stir at a speed of 500r / min for 40min, and cool naturally to room temperature to obtain a phenolized starch solution for use; the mixing mass ratio of the starch, phenol, sodium hydroxide and water is 15:1.3:2.5:40;

[0030] (2) Modified rosin resin: Add rosin resin to the reaction kettle, and then add catalyst, the amount of catalyst is 0.18% of the mass of rosin resin, control the catalyst to be added dropwise within 50 minutes; stir and heat up to 108°C, add pentaerythritol, pentaerythritol Be 1:20 with the mass ratio of rosin resin, keep temperature and condense and reflux 1.5 hours, obtain mixture A; Described catalyzer is tetraethylammonium bromide; In mixture ...

Embodiment 3

[0038] A kind of environmental protection adhesive, comprises the following steps:

[0039] (1) Phenolic modification of starch: Put starch, phenol, sodium hydroxide and water into the reaction kettle in turn, heat to 85°C, stir at constant temperature at 1500r / min for 2 hours, then adjust the temperature to 58°C, Stir at a speed of 500r / min for 36min, cool naturally to room temperature, and obtain a phenolized starch solution for use; the mixing mass ratio of the starch, phenol, sodium hydroxide and water is 14:1.3:2.5:40;

[0040](2) Modified rosin resin: Add rosin resin to the reaction kettle, and then add catalyst, the amount of catalyst is 0.16% of the mass of rosin resin, control the catalyst to be added dropwise within 50 minutes; stir and heat up to 106°C, add pentaerythritol, pentaerythritol Be 1:20 with the mass ratio of rosin resin, keep temperature and condense and reflux 1.5 hours, obtain mixture A; Described catalyzer is tetraethylammonium bromide; In mixture A, ...

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PUM

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Abstract

The invention discloses an environment-friendly adhesive and relates to the technical field of adhesives. A preparation method comprises the following steps: (1) carrying out phenolation modificationon starch; (2) modifying rosin resin; (3) synthesizing the environment-friendly adhesive. The environment-friendly adhesive prepared by the preparation method does not contain formaldehyde and has notoxin and no odor; a production technology is simple and the quality of a product is excellent; the environment-friendly adhesive has the advantages of good bonding property and good construction property, rapid drying speed, strong adhesive force and high bonding strength; the starch is subjected to the phenolation modification so that a prepared phenolated starch solution has good film forming,gelling, sizing, thickening and blending properties and the like; the environment-friendly adhesive has great viscosity and typical pseudoplastic performance; the bonding strength of the adhesive canbe effectively improved.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an environmentally friendly adhesive. Background technique [0002] Adhesive is a substance that can connect two or more parts or materials together through interface adhesion and cohesion. It has the advantages of continuous stress distribution and light weight, and has been used by more and more people. It is used in various industries, such as decoration industry, furniture manufacturing industry, shoemaking industry and packaging industry. [0003] Adhesives in the packaging industry are often used for the packaging of paper products such as cartons and cartons. In order to meet the requirements of green environmental protection, environmentally friendly adhesives are more and more widely used. Environmentally friendly adhesives are adhesives with low VOC content and no formaldehyde. [0004] In related technologies, due to the unreasonable formulation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/04C09J11/08
Inventor 周艺桃
Owner 枞阳县新天地高新材料有限公司
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