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Water-based adhesive with low glass transition temperature as well as preparation method and application of water-based adhesive

A technology of glass transition and transition temperature, applied in monocarboxylate copolymer adhesives, adhesive types, photovoltaic power generation, etc., can solve problems such as long drying time, slow film forming speed, and uneven sizing , to achieve the effect of low glass transition temperature, fast drying speed and good viscosity

Pending Publication Date: 2022-05-24
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the water-based adhesives on the market have a higher glass transition temperature (≥5°C). Since the glass transition temperature of water-based adhesives has a strong correlation with the minimum film-forming temperature, the higher the glass transition temperature, the higher the glass transition temperature. The minimum film-forming temperature is also high, and the film-forming and drying speeds of the corresponding water-based adhesives are also slow. In terms of production operations, it has a certain impact on the operation of machinery and the production efficiency of products; at the same time, due to its drying time It is longer and the film forming speed is slower, which will cause uneven sizing and messy appearance of the product, which will have a greater impact on the appearance quality of the product. Therefore, reducing the glass transition temperature of the water-based adhesive will improve production efficiency and improve Product appearance is of great significance

Method used

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  • Water-based adhesive with low glass transition temperature as well as preparation method and application of water-based adhesive
  • Water-based adhesive with low glass transition temperature as well as preparation method and application of water-based adhesive
  • Water-based adhesive with low glass transition temperature as well as preparation method and application of water-based adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of a water-based adhesive with a low glass transition temperature, comprising the steps of:

[0036] (1) Weighing: weigh vinyl acetate 330g; butyl acrylate 165g; acrylic acid 5.5g; polyvinyl alcohol 17-88, 35.0g; C12-14 secondary alcohol polyoxyethylene ether 27.5g; ammonium persulfate 1g; lemon 25g of triethyl acid; 4g of sodium bicarbonate, for use;

[0037] (2) the water of ammonium persulfate and 10g is mixed with ammonium persulfate aqueous solution;

[0038] Sodium bicarbonate and 36g of water are mixed with sodium bicarbonate aqueous solution;

[0039] Mixing vinyl acetate, butyl acrylate and acrylic acid uniformly to obtain a monomer mixed solution;

[0040] (3) Add 17-88 g of polyvinyl alcohol and 743 g of water to the reaction vessel, heat to 90°C in a water bath under stirring (280r / min), and keep the temperature at 90°C for 1 h to completely dissolve the polyvinyl alcohol to obtain a polyvinyl alcohol. Vinyl alcohol solution; the poly...

Embodiment 2

[0047] A preparation method of a water-based adhesive with a low glass transition temperature, comprising the steps of:

[0048] (1) Weighing: weigh vinyl acetate 320g; butyl acrylate 120g; acrylic acid 4.0g; polyvinyl alcohol 17-88, 31.1g; C12-14 secondary alcohol polyoxyethylene ether 25.0g; ammonium persulfate 0.9g; Triethyl citrate 22.0g; Sodium bicarbonate 3.5g, for use;

[0049] (2) the water of ammonium persulfate and 9g is mixed with ammonium persulfate aqueous solution;

[0050] Sodium bicarbonate and 31.5g water are mixed with sodium bicarbonate aqueous solution;

[0051] Mixing vinyl acetate, butyl acrylate and acrylic acid uniformly to obtain a monomer mixed solution;

[0052] (3) Add polyvinyl alcohol 17-88 and 660.0g of water into the reaction vessel, heat to 90°C in a water bath under stirring conditions (280r / min), and keep the temperature at 90°C for 1 hour to completely dissolve the polyvinyl alcohol, and obtain polyvinyl alcohol solution; the polyvinyl al...

Embodiment 3

[0059] A preparation method of a water-based adhesive with a low glass transition temperature, comprising the steps of:

[0060] (1) Weighing: weigh vinyl acetate 310g; butyl acrylate 155g; acrylic acid 5.2g; polyvinyl alcohol 17-88, 33.0g; C12-14 secondary alcohol polyoxyethylene ether 25.9g; ammonium persulfate 0.94g; Triethyl citrate 23.5g; Sodium bicarbonate 3.8g, for use;

[0061] (2) the water of ammonium persulfate and 9.4g is mixed with ammonium persulfate aqueous solution;

[0062] Sodium bicarbonate and 34.2g of water are mixed with sodium bicarbonate aqueous solution;

[0063] Mixing vinyl acetate, butyl acrylate, and acrylic acid uniformly to obtain a monomer mixed solution;

[0064] (3) Add polyvinyl alcohol 17-88 and 700.3 g of water into the reaction vessel, heat to 90°C in a water bath under stirring conditions (280r / min), and keep the temperature at 90°C for 1 hour to completely dissolve the polyvinyl alcohol, and obtain polyvinyl alcohol solution; the poly...

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Abstract

The invention relates to the technical field of functional material preparation, in particular to a water-based adhesive with low glass transition temperature as well as a preparation method and application thereof, and the water-based adhesive is prepared from the following raw materials in parts by weight: 310-335 parts of vinyl acetate; 120 to 165 parts of butyl acrylate; 4.0 to 5.5 parts of acrylic acid; 17 to 88 parts of polyvinyl alcohol, and 30 to 35 parts of polyvinyl alcohol; 25 to 27.5 parts of C12 to C14 secondary alcohol polyoxyethylene ether; 0.9 to 1.0 part of ammonium persulfate; 22 to 25 parts of triethyl citrate; 3.5 to 4.0 parts of sodium bicarbonate; and 675.9 to 801.4 parts of water. The defects that an existing water-based adhesive is high in glass-transition temperature and low in drying speed are overcome, the water-based adhesive high in drying speed is provided by reducing the glass-transition temperature of the water-based adhesive, and meanwhile the prepared water-based adhesive is small in particle size and has good viscosity, fluidity and stability.

Description

technical field [0001] The invention belongs to the technical field of functional material preparation, and in particular relates to a water-based glue with low glass transition temperature and a preparation method and application thereof. Background technique [0002] Water-based adhesives are adhesives made of film-forming materials that can be dispersed or dissolved in water, also known as water-soluble adhesives. White latex is widely used in wood furniture, paper products, industrial manufacturing, etc. It has the advantages of convenient use, good initial adhesion, room temperature curing, wide bonding range and simple production process. [0003] At present, most of the water-based adhesives on the market have high glass transition temperatures (≥5°C). Because the glass transition temperature of water-based adhesives has a strong correlation with its minimum film-forming temperature The minimum film-forming temperature is also high, and the film-forming speed and dry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C08F218/08C08F220/18C08F220/06C08F2/30C08F2/38C08F4/30C08K5/11
CPCC09J131/04C08F218/08C08F2/30C08F2/38C08F4/30C08K5/11C08F220/1804C08F220/06Y02E10/50
Inventor 程传玲杨硕王建民佘鑫周耕耘代存迪李峰骁王豪礼
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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