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Starch adhesive agent and preparation method thereof

A technology of starch adhesive and corn starch, applied in the direction of adhesive type, graft polymer adhesive, adhesive, etc., can solve the problem of not meeting the production needs of modern paper products, and not mentioning the production and preparation of starch adhesive , quality needs to be improved, etc., to achieve the effect of not being mildewy, easy to increase production and expansion, and low cost

Active Publication Date: 2009-02-18
湖南葆华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, the adhesives of paper products generally used polyvinyl acetate (that is, milky white glue) or sodium silicate. The cost of the former is high, and the latter is easy to regain moisture and efflorescence, and the drying speed is slow and toxic. Neither of these two adhesives can meet the requirements. The production needs of modern paper products
Chinese patent documents CN1621474A, CN1621475A, CN1621476A, CN1673304A, CN1769361A, CN1840601A, CN1850929A, CN1962786A and CN101020806A disclose different preparation methods of existing starch adhesives, but none of the technical solutions disclosed in the above-mentioned Chinese patent documents mentions the use of radiation bonding. branch method to carry out the production preparation of starch adhesive, and generally contain a large amount of chemical additives (as oxidizing agent, drier, reducing agent etc.) in the starch adhesive product prepared by existing method, the production cost of its product is high , the quality needs to be improved, and the performance indicators such as the drying time, viscosity, hardness, and compression resistance of the product still need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A starch adhesive, mainly prepared by radiation graft polymerization of 100kg cornstarch, 400kg water, 100kg acrylic acid and 0.1kg dodecanethiol, 0.5kg benzene was also added in the preparation of the starch adhesive Sodium formate, 0.5kg sodium tetraborate and 5kg bentonite.

[0014] The above-mentioned starch binder is specifically prepared through the following steps:

[0015] (1) Prepare raw materials of the following quality: cornstarch 100kg, water 400kg, acrylic acid 100kg, dodecanethiol 0.1kg, sodium benzoate 0.5kg, sodium tetraborate 0.5kg and bentonite 5kg;

[0016] (2) Put the prepared cornstarch and water into the reactor and mix them, then add the prepared acrylic acid and dodecanethiol, then heat up to 80°C for gelatinization;

[0017] (3) Put the gelatinized product in 60 Carry out radiation graft polymerization in the Co-γ ray radiation field, and the received dose is 0.5KGy;

[0018] (4) Add prepared sodium benzoate and sodium tetraborate to the pro...

Embodiment 2

[0020] A kind of starch adhesive, mainly by the cornstarch of 100kg, 400kg water, 50kg acrylic acid and 0.01kg dodecyl mercaptan prepared after radiation graft polymerization, also added 5kg sodium benzoate in the preparation of this starch adhesive , 0.1kg sodium tetraborate and 10kg bentonite.

[0021] Above-mentioned starch binder is to prepare through the following steps:

[0022] (1) Prepare raw materials of the following quality: cornstarch 100kg, water 400kg, acrylic acid 50kg, dodecanethiol 0.01kg, sodium benzoate 5kg, sodium tetraborate 0.1kg and bentonite 10kg;

[0023] (2) Put the prepared cornstarch and water into the reactor and mix them, then add the prepared acrylic acid and dodecanethiol, then heat up to 60°C for gelatinization;

[0024] (3) Put the gelatinized product in 60 Carry out radiation graft polymerization in the Co-γ ray radiation field, and receive a dose of 2KGy;

[0025] (4) Add prepared sodium benzoate and sodium tetraborate to the product afte...

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Abstract

The invention discloses a starch adhesive and a preparation method thereof. The starch adhesive is primarily prepared with 100 portions of starch, 350 to 450 portions of water, 50 to 100 portions of acroleic acid and 0.01 to 0.1 portion of lauryl mercaptan through radiation grafting polymerization. The preparation method comprises the following steps: the starch is added to a reactor; water is added to the starch and is uniformly stirred; subsequently, the acroleic acid and the lauryl mercaptan are added; the mixture is heated to be 60 to 85 DEG C so that the starch is gelatinized; subsequently, the mixture is arranged in a <60>Co-Gamma ray radiation field for irradiation grafting polymerization with the received dosage of 0.2 to 2KGy; after the polymerization, sodium benzoate, sodium borate and bentonite are added and are stirred uniformly. The starch adhesive has the advantages of small product density, great cohesive force, no free alkali, quickly drying, low cost, high storage stability, long flatting and storage period and so on. The preparation method has the advantages that the reaction condition is gentle, the energy consumption is lower, the increase production and the expansion are easy, the preparation process is simplified, manufacturing cost is low and so on.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a method for preparing starch adhesive by using radiation grafting technology. Background technique [0002] In the past, the adhesives of paper products generally used polyvinyl acetate (that is, milky white glue) or sodium silicate. The cost of the former is high, and the latter is easy to regain moisture and efflorescence, and the drying speed is slow and toxic. Neither of these two adhesives can meet the requirements. The production needs of modern paper products. Chinese patent documents CN1621474A, CN1621475A, CN1621476A, CN1673304A, CN1769361A, CN1840601A, CN1850929A, CN1962786A and CN101020806A disclose different preparation methods of existing starch adhesives, but none of the technical solutions disclosed in the above-mentioned Chinese patent documents mentions the use of radiation bonding. branch method to carry out the production preparation of starch a...

Claims

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Application Information

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IPC IPC(8): C09J151/02
Inventor 邵赛邓钢桥王芊金龙新李文革邹朝晖谢洪科张跃龙张乐平
Owner 湖南葆华环保科技有限公司
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