High-temperature cured type esterification modified cassava starch adhesive and preparation method thereof

A technology of tapioca starch and esterification modification, applied in starch-derived adhesives, polymer adhesive additives, non-polymer adhesive additives, etc. problem, to achieve the effect of high initial viscosity, improved bonding strength and high reactivity

Active Publication Date: 2017-04-26
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Adhesives commonly used in the wood industry are synthetic polymer adhesives prepared from urea-formaldehyde, phenolic, and melamine-formaldehyde resins. The raw materials are non-renewable, and gases that pollute the environment and endanger human health will be generated during preparation and use.

Method used

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  • High-temperature cured type esterification modified cassava starch adhesive and preparation method thereof
  • High-temperature cured type esterification modified cassava starch adhesive and preparation method thereof
  • High-temperature cured type esterification modified cassava starch adhesive and preparation method thereof

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specific Embodiment approach 1

[0030] A high-temperature curing type esterified modified tapioca starch adhesive, the high-temperature curing type esterified modified tapioca starch adhesive is mainly composed of modified tapioca starch adhesive, isocyanate, antioxidant, flame retardant, light stabilizer, ultraviolet ray absorbent, its parts by weight are respectively 80 parts of modified tapioca adhesive, 8 parts of isocyanate, 0.5 part of antioxidant, 0.5 part of flame retardant, 0.02 part of light stabilizer, 0.5 part of ultraviolet light Absorbent, wherein the composition of the modified tapioca starch adhesive includes tapioca starch, polyvinyl alcohol, sodium lauryl sulfate, dodecenyl succinic anhydride.

[0031]The high-temperature curing type esterified modified tapioca starch adhesive described in this embodiment, the parts by weight of tapioca starch in the described modified tapioca starch adhesive is 100 parts by weight, the parts by weight of polyvinyl alcohol is 8 parts, lauryl The parts by we...

specific Embodiment approach 2

[0040] According to the preparation method of the high-temperature curing type esterification modified tapioca starch adhesive described in specific embodiment one, comprises the steps:

[0041] Step 1. Take 100 parts by weight of tapioca starch, add 156 parts by weight of distilled water to the weighed tapioca starch, and place it on a magnetic heating stirrer for heating and stirring at a heating temperature of 40°C. Stir The time is 10 minutes, the stirring speed is 200rad / min, and the tapioca starch emulsion is obtained, and the temperature is kept at 40° C. for use;

[0042] Step 2, take 8 parts by weight of polyvinyl alcohol and place it in a reactor with a stirrer, add 46 parts by weight of distilled water to the weighed polyvinyl alcohol, and stir Raise the temperature to 90°C, stir for 5 minutes, and stir at a speed of 200rad / min. After the polyvinyl alcohol is completely dissolved, cool down to 40°C and set aside;

[0043] Step 3. Add the tapioca starch emulsion pre...

specific Embodiment approach 3

[0048] A high-temperature curing type esterified modified tapioca starch adhesive, the high-temperature curing type esterified modified tapioca starch adhesive is mainly composed of modified tapioca starch adhesive, isocyanate, antioxidant, flame retardant, light stabilizer, ultraviolet ray absorbent, its parts by weight are respectively 100 parts of modified tapioca starch adhesive, 12 parts of isocyanate, 1.5 parts of antioxidant, 2 parts of flame retardant, 0.2 part of light stabilizer, 1 part of ultraviolet light Absorbent, wherein the composition of the modified tapioca starch adhesive includes tapioca starch, polyvinyl alcohol, sodium lauryl sulfate, dodecenyl succinic anhydride.

[0049] The high-temperature curing type esterified modified tapioca starch adhesive described in this embodiment, the parts by weight of tapioca starch in the described modified tapioca starch adhesive is 100 parts by weight, the parts by weight of polyvinyl alcohol is 8 parts, lauryl The part...

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Abstract

The invention provides a high-temperature cured type esterification modified cassava starch adhesive and a preparation method thereof and belongs to the technical field of adhesive preparation. At present, raw materials of adhesives generally used in the wood industry are non-renewable. The high-temperature cured type esterification modified cassava starch adhesive is mainly prepared from, by weight, 80-100 parts of modified cassava starch adhesive, 7-12 parts of isocyanate, 0.5-1.5 parts of antioxygen, 0.5-2 parts of flame retardant, 0.02-0.2 part of light stabilizer and 0.5-1 part of ultraviolet light absorber, wherein the modified cassava starch adhesive comprises cassava starch, polyvinyl alcohol, sodium dodecyl sulfate and dodecenyl succinic anhydride. The high-temperature cured type esterification modified cassava starch adhesive is moderate in viscosity, stable in storing and slow in layering. The preparation process is simple and easy to operate. The consumed time is short. The high-temperature cured type esterification modified cassava starch adhesive is excellent in water resistant performance and bonding strength, and industrial production is likely to be realized.

Description

technical field [0001] The invention belongs to the technical field of adhesive preparation, and in particular relates to a high-temperature curing type esterified modified tapioca starch adhesive and a preparation method thereof. Background technique [0002] Adhesives commonly used in the wood industry are synthetic polymer adhesives prepared from urea-formaldehyde, phenolic, and melamine-formaldehyde resins. The raw materials are non-renewable, and gases that pollute the environment and endanger human health will be generated during preparation and use. With the country's emphasis on environmental resources, it is necessary to develop and prepare environmentally friendly adhesives. Starch is a kind of natural polymer material with low price, wide sources, green and environmental protection, which has the characteristics of non-toxic and non-polluting. If some or all of the polymer materials synthesized by petrochemical resources are replaced by starch and applied to wood...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/06C09J11/06C09J11/08C08B31/04
CPCC08B31/04C08L2201/02C08L2201/08C08L2201/22C09J11/06C09J11/08C09J103/06C08L29/04C08K5/00C08K5/372C08K5/3435C08K5/29C08K5/13C08K5/523
Inventor 张彦华孙亚东吕闪闪顾继友高振华谭海彦
Owner NORTHEAST FORESTRY UNIVERSITY
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