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Preparation of emulsion type environment-protective adhesive

An adhesive and emulsion-type technology, which is applied in the field of preparation of emulsion-type environmentally friendly adhesives, can solve the problems of reduced bonding strength, easy gel formation, and slow drying speed, achieving fast drying speed, low freezing point, and low cost. low effect

Inactive Publication Date: 2008-11-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bone glue is the general term for collagen-derived proteins. It is a water-soluble natural rubber material that is non-toxic, harmless, pollution-free, low-cost, high-adhesive strength, and biodegradable. Its main disadvantage is that the glue is easy to form a gel , so that the bonding strength is significantly reduced or lost, and the gel temperature is high, and it is solid at room temperature
It needs to be heated and melted during use, which is not conducive to glue application, and more importantly, the drying speed is slow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1, at first water and turpentine are mixed by the mass ratio of 1: 3, be warming up to 78 ℃ to obtain mixed liquor, then every 100g mixed liquor adds the emulsifier Span-80 of 0.6g and the emulsifier Tween-60 of 1.5g, Emulsify for 30 minutes to obtain an emulsion; secondly, add solid bone glue particles to the emulsion, wherein the mass ratio of solid bone glue particles to the emulsion is 1:2.3, heat in a constant temperature water bath at 78°C to form a glue, and add 6mol / L of 5g of hydrochloric acid, stirred for 0.5h to form a degraded glue solution after swelling; finally cooled to 40°C, added 4g of epichlorohydrin to every 100g of the degraded glue solution, and stirred at a speed of 600 rpm to make the epoxy chloride Propane and the degraded glue undergo a cross-linking copolymerization reaction, the reaction time is 1h, after the reaction, adjust the pH value to 7 with acid and alkali and cool to room temperature to obtain a yellow-brown viscous liquid ...

Embodiment 2

[0007] Embodiment 2, at first water and turpentine are mixed by the mass ratio of 1: 4, be warming up to 82 ℃ to obtain mixed liquor, then every 100g mixed liquor adds the emulsifier Span-80 of 0.8g and the emulsifier Tween-60 of 1.3g, Emulsify for 40 minutes to obtain an emulsion; secondly, add solid bone glue particles to the emulsion, wherein the mass ratio of solid bone glue particles to the emulsion is 1:2.5, heat in a constant temperature water bath at 82°C to form a glue, and add 6mol / L of 4g of hydrochloric acid, stirred for 1h to form a degraded glue solution after swelling; finally cooled to 35°C, added 3.8g of epichlorohydrin to every 100g of the degraded glue solution, and stirred at a speed of 600 rpm to make the epoxy chloride Propane and the degraded glue undergo cross-linking and copolymerization reaction, the reaction time is 1.3h, after the reaction, adjust the pH value to 7.2 with acid and alkali and cool to room temperature to obtain a yellow-brown viscous l...

Embodiment 3

[0008] Embodiment 3, at first water and turpentine are mixed by the mass ratio of 1: 3.3, be warming up to 75 ℃ to obtain mixed liquor, then every 100g mixed liquor adds the emulsifier Span-80 of 0.5g and the emulsifier Tween-60 of 1.2g, Emulsify for 36 minutes to obtain an emulsion; secondly, add solid bone glue particles to the emulsion, wherein the mass ratio of solid bone glue particles to the emulsion is 1:2.1, heat in a constant temperature water bath at 75°C to form a glue, and add 6mol / L of 6g of hydrochloric acid, stirred for 0.8h to form a swollen and degraded glue solution; finally, the temperature was lowered to 37°C, and 4.2g of epichlorohydrin was added to every 100g of the degraded glue solution, and stirred at a speed of 600 rpm to make the epoxy Chloropropane and the degraded glue undergo cross-linking and copolymerization reaction, the reaction time is 1.5 hours, after the reaction, adjust the pH value to 7.4 with acid and alkali and cool to room temperature t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention relates to a method for preparing emulsion type environment-friendly adhesives. The method is as follows: firstly, water and turpentine oil are mixed, and emulsifying agent Span-80 and Tween-60 are added into the mixture; secondly, solid bone glue particles are added into the mixture and water-bath is adopted to heat, and hydrochloric acids are added into the mixture during the heating process so as to form glue solution which is degraded after swelling; thirdly, temperature is reduced and epoxy chloropropane is added into the glue solution for reaction through rotation and stirring; after the reaction, acids and alkali are used for adjusting the pH value to be between 7 and 7.5; and the tawny viscous liquid, namely the emulsion type environment-friendly adhesives, is obtained after the temperature is cooled to the room temperature. The method selects the cheap acid method to perform degradation and secondary chemical crosslinking on bone glue in emulsion, thereby reducing the solidifying point of the bone glue, further improving the bonding strength of the bone glue, shortening the drying time, and accelerating the drying speed; and the emulsion type environment-friendly adhesives with good stability, high tensile strength and quick drying speed are prepared.

Description

technical field [0001] The invention relates to a method for synthesizing an adhesive, in particular to a method for preparing an emulsion-type environment-friendly adhesive. Background technique [0002] Bone glue is the general term for collagen-derived proteins. It is a water-soluble natural rubber material that is non-toxic, harmless, pollution-free, low-cost, high-adhesive strength, and biodegradable. Its main disadvantage is that the glue is easy to form a gel , so that the bonding strength is significantly reduced or lost, and the gel temperature is high, and it is solid at room temperature. It needs to be heated and melted during use, which is not conducive to glue application, and more importantly, the drying speed is slow. Contents of the invention [0003] The object of the present invention is to provide a method for preparing an emulsion-type environmentally friendly adhesive that can significantly increase the drying speed while effectively reducing the free...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J193/00C09J9/00C09J189/00
Inventor 余丽丽李仲谨朱雷邱辉张莎王培霖陈宏海丁金皓姚宝晶陈帅帅何萍李铭杰杨威
Owner SHAANXI UNIV OF SCI & TECH