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High-temperature curing type esterified modified tapioca starch adhesive and preparation method thereof

A technology of tapioca starch, esterification modification, applied in starch-derived adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve environmental pollution, harm to health, raw materials are not renewable, etc. problem, to achieve the effect of high reactivity, improved bonding strength and high initial viscosity

Active Publication Date: 2018-10-30
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 curing type esterified modified tapioca starch adhesive and preparation method thereof
  • High-temperature curing type esterified modified tapioca starch adhesive and preparation method thereof
  • High-temperature curing type esterified modified tapioca starch adhesive and preparation method thereof

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specific Embodiment approach 1

[0029] A high temperature curing type esterification modified tapioca starch adhesive, the high temperature curing type esterification modified tapioca starch adhesive is mainly composed of modified tapioca starch adhesive, isocyanate, antioxidant, flame retardant, light stabilizer, ultraviolet The absorbent is made, and its parts by weight are respectively 80 parts of modified tapioca starch 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 The absorbent, wherein the components of the modified tapioca starch adhesive include tapioca starch, polyvinyl alcohol, sodium lauryl sulfate, dodecenyl succinic anhydride.

[0030]In the high-temperature curing type esterification modified tapioca starch adhesive described in this embodiment, the modified tapioca starch adhesive contains 100 parts by weight of tapioca starch, 8 parts by weight of polyvinyl alcohol, and 8 parts by weight of do...

specific Embodiment approach 2

[0038] According to the preparation method of the high temperature curing type esterification modified tapioca starch adhesive described in the specific embodiment 1, it comprises the following steps:

[0039] Step 1, take by weighing 100 parts of tapioca starch according to parts by weight, add the distilled water that parts by weight are 156 parts in the weighed tapioca starch, place on the magnetic heating stirrer and carry out heating and stirring, heating temperature 40 ℃, stir The time is 10min, and the stirring speed is 200rad / min to obtain the tapioca starch emulsion, and the temperature is kept at 40°C for use;

[0040] Step 2, take 8 parts by weight of polyvinyl alcohol and place it in the reactor with agitator, add 46 parts by weight of distilled water to the weighed polyvinyl alcohol, under stirring conditions The temperature was raised to 90°C, the stirring time was 5min, and the stirring speed was 200rad / min. After the polyvinyl alcohol was completely dissolved, ...

specific Embodiment approach 3

[0045] A high temperature curing type esterification modified tapioca starch adhesive, the high temperature curing type esterification modified tapioca starch adhesive is mainly composed of modified tapioca starch adhesive, isocyanate, antioxidant, flame retardant, light stabilizer, ultraviolet The absorbent is made, and 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 parts of light stabilizer, 1 part of ultraviolet light The absorbent, wherein the components of the modified tapioca starch adhesive include tapioca starch, polyvinyl alcohol, sodium lauryl sulfate, dodecenyl succinic anhydride.

[0046] In the high-temperature curing type esterification modified tapioca starch adhesive described in this embodiment, the modified tapioca starch adhesive contains 100 parts by weight of tapioca starch, 8 parts by weight of polyvinyl alcohol, and 8 parts by weight of d...

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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, in particular to a high-temperature curing type esterification modified tapioca starch adhesive and a preparation method thereof. Background technique [0002] At present, the commonly used adhesives in the wood industry are synthetic polymer adhesives prepared from urea-formaldehyde, phenolic, and melamine-formaldehyde resins. The raw materials are non-renewable, and during preparation and use, they will produce gases that pollute the environment and endanger health. With the country's attention to environmental resource issues, it is necessary to develop and prepare environmentally friendly adhesives. Starch is a kind of low-cost, wide-ranging, green and environmentally friendly natural polymer material, with the characteristics of non-toxic and non-polluting. If starch is used to partially or completely replace the polymer materials synthesized from petrochemical resources and ap...

Claims

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Application Information

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Patent Type & Authority Patents(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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