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Starch-based adhesive and preparation method thereof

An adhesive, starch-based technology, applied in the directions of starch-derived adhesives, adhesive additives, adhesive types, etc., can solve problems such as technical bottlenecks that have not been well resolved, and achieve improved reaction efficiency and improved Oxidation effect, the effect of strengthening the oxidation process

Inactive Publication Date: 2018-10-12
ANHUI SHENGMEI METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, although starch-based adhesives have received extensive attention and demand, there are still many technical bottlenecks that have not been well resolved. Issues such as bonding quality, production efficiency, and process performance have yet to be further explored and studied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the starch-based adhesive includes the following mass percentage components: oxidized starch 25%, polyvinyl alcohol 10%, inorganic filler 8%, surfactant 2%, crosslinking agent 1% and water 54%, wherein, inorganic The filler is bentonite and graphene oxide with a mass ratio of 1:0.5, and the surfactant is sodium dodecylsulfonate.

[0026] In the present embodiment, the preparation method of starch-based adhesive, the specific steps are as follows:

[0027] 1) Starch pretreatment: put the tapioca starch in the stocker of the extrusion extruder, set the pressure of the extrusion extruder to 7MPa, set the temperature to 85°C, extrude the tapioca starch, and then extrude the expanded The cassava starch was added to the NaOH solution with a pH of 10 and a temperature of 50°C, keeping the ratio of solid to liquid at 1:6, and then the starch mixture was placed in an ultrasonic transmitter, and the ultrasonic power was 150w, the frequency was 25Hz, and the te...

Embodiment 2

[0031] This example is the same as Example 1, except that the starch-based adhesive in this example includes the following mass percentage components: oxidized starch 20%, polyvinyl alcohol 8%, inorganic filler 4%, surfactant 1.5%, crosslinking Agent 0.5% and water 66%.

Embodiment 3

[0033] This example is the same as Example 1, except that the starch-based adhesive in this example includes the following mass percentage components: oxidized starch 30%, polyvinyl alcohol 13%, inorganic filler 10%, surfactant 3%, crosslinking agent 1.2% and water 42.8%.

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Abstract

The invention discloses a starch-based adhesive and a preparation method thereof, and relates to the technical field of starch-based adhesives. The starch-based adhesive uses starch, polyvinyl alcoholand an inorganic filler as raw materials. The method comprises the following steps: pretreatment is performed on the starch through physical and chemical methods, respectively; the pretreated starchis oxidized by adopting a Fenton reagent; and finally, the oxidized starch, the polyvinyl alcohol, the inorganic filler, a crosslinking agent and a surfactant are subjected to an ultrasonic reaction to prepare the starch-based adhesive. The prepared starch-based adhesive disclosed by the invention not only has good water resistance and cementation quality, but also has high heat resistance.

Description

technical field [0001] The invention belongs to the technical field of adhesives, relates to the technical field of starch-based adhesives, in particular to a starch-based adhesive and a preparation method thereof. Background technique [0002] As a multi-industry common product and technology, the new social demand for adhesive properties such as non-toxic, harmless, environmentally friendly, and degradable makes it possible to use natural biomass materials as raw materials to obtain various environmental compatibility, low production cost, and economical. Practical green adhesive products and technologies have become a research hotspot in the field of adhesives today. [0003] Biomass adhesives mainly include starch adhesives, protein adhesives, lignin adhesives, tannin adhesives, and their modified products. Starch has a wide range of sources, low price, and renewable , Degradable and other advantages, is one of the most potential natural adhesives. There are a large nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J129/04C09J11/04C09J11/06C08B30/12C08B31/18
CPCC09J103/10C08B30/12C08B31/18C08L2201/08C09J11/04C09J11/06C08L29/04C08K13/02C08K3/346C08K3/042C08K5/42C08K5/34922
Inventor 凌永娥
Owner ANHUI SHENGMEI METAL TECH CO LTD
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