Modified oxidized starch adhesive as well as preparation method and application thereof

A technology of oxidizing starch and adhesives, applied in the directions of adhesives, adhesive types, graft polymer adhesives, etc., can solve the problems of low strength and high moisture absorption rate of oxidized starch adhesives, and achieve low moisture absorption rate, which is beneficial to Grafting reaction, the effect of uniform viscosity

Active Publication Date: 2017-10-10
WUXI HAITE NEW MATERIAL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the unmodified oxidized starch adhesive has high moisture absorption rate and low strength

Method used

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  • Modified oxidized starch adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A modified oxidized starch adhesive, prepared from the following raw materials: (unit: g)

[0025] Oxidized starch 100

[0026] Potassium persulfate 0.4

[0027] Sodium nonylphenol polyoxyethylene sulfonate 0.8

[0028] Polyoxyethylene ether sorbitan hexastearate 1.2

[0029] Polyvinyl alcohol 1799 1

[0030] Glycidyl methacrylate 45

[0031] Urea 9

[0032] water 340

[0033] Among them, when the concentration of oxidized starch is 25wt%, the viscosity after gelatinization is in the range of 2700±100mPa·s.

[0034] Preparation process: (1) Dissolve 100g of oxidized starch, 1g of polyvinyl alcohol 1799, 0.8g of nonylphenol polyoxyethylene sodium sulfonate and 1.2g of polyoxyethylene ether sorbitan hexastearate in 300g of water to prepare Starch latex, and heated to 90 ° C for 30 minutes to gelatinize, control the concentration of oxidized starch at 25wt%, and prepare a gelatinized starch solution.

[0035] (2) Cool down to 85°C, add 0.4g of potassium persulfate ...

Embodiment 2

[0039] A modified oxidized starch adhesive, prepared from the following raw materials: (unit: g)

[0040] Oxidized starch 100

[0041] Potassium persulfate 0.2

[0042] Sodium nonylphenol polyoxyethylene sulfonate 0.5

[0043] Polyoxyethylene ether sorbitan hexastearate 0.5

[0044] Polyvinyl alcohol 1799 1.5

[0045] Glycidyl methacrylate 35

[0046] Urea 8

[0047] water 340

[0048] Among them, when the concentration of oxidized starch is 25wt%, the viscosity after gelatinization is in the range of 2700±100mPa·s.

[0049] Preparation process: Preparation process: (1) Add 100g oxidized starch, 1.5g polyvinyl alcohol 1799, 0.5g sodium nonylphenol polyoxyethylene sulfonate and 0.5g polyoxyethylene ether sorbitan hexastearate to 300g Dissolve in water to form starch latex, heat to 90°C for gelatinization for 30 minutes, control the concentration of oxidized starch at 25wt%, and prepare a gelatinized starch solution.

[0050] (2) Cool down to 85°C, add 0.2g of potassium ...

Embodiment 3

[0054] A modified oxidized starch adhesive, prepared from the following raw materials: (unit: g)

[0055] Oxidized starch 100

[0056] Potassium persulfate 0.8

[0057] Sodium nonylphenol polyoxyethylene sulfonate 0.7

[0058] Polyoxyethylene ether sorbitan hexastearate 0.8

[0059] Polyvinyl alcohol 1788 2

[0060] Glycidyl methacrylate 30

[0061] Urea 9

[0062] water 340

[0063] Among them, when the concentration of oxidized starch is 25wt%, the viscosity after gelatinization is in the range of 2700±100mPa·s.

[0064] Preparation process: (1) Dissolve 100g of oxidized starch, 2g of polyvinyl alcohol 1788, 0.7g of nonylphenol polyoxyethylene sodium sulfonate and 0.8g of polyoxyethylene ether sorbitan hexastearate in 300g of water to prepare Starch latex, and heated to 90 ° C for 30 minutes to gelatinize, control the concentration of oxidized starch at 25wt%, and prepare a gelatinized starch solution.

[0065] (2) Cool down to 85°C, add 0.8g of potassium persulfate ...

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Abstract

The invention discloses a modified oxidized starch adhesive as well as a preparation method and an application thereof. The modified oxidized starch adhesive is characterized by being prepared from the following components in parts by weight: 100 parts of oxidized starch, 0.2-0.8 parts of an initiator, 0.5-0.8 parts of an anionic emulsifier, 0.5-1.2 parts of a non-ionic emulsifier, 1-2 parts of a thickener, 30-50 parts of a modified monomer, 6-9 parts of a stabilizer and 340 parts of water. The modified oxidized starch adhesive has high adhesion strength, low moisture absorption rate and excellent water resistance.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a modified oxidized starch adhesive, its preparation method and application. Background technique [0002] Oxidized starch is an environmentally friendly natural adhesive raw material, which is widely used in many fields. However, the unmodified oxidized starch adhesive has high moisture absorption rate and low strength. Whether the oxidized starch can be modified to improve the properties of adhesive raw materials is the subject of current research. On the other hand, glycidyl methacrylate (GMA) is an acrylic monomer with an epoxy group, and its own double bond can undergo graft polymerization with free radicals; whether methacrylic acid can shrink The introduction of glyceride into the modification of oxidized starch to improve the properties of oxidized starch used as adhesive is also the subject of research. Contents of the invention [0003] Based on the current situation in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C08F251/00C08F220/32
CPCC08F251/00C09J151/02C08F220/325
Inventor 李卫东吴立波黄馨曹英杰李晶波白永平卫晓波董志强
Owner WUXI HAITE NEW MATERIAL RES INST
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