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Polyvinyl alcohol glue and its preparation method and application

A technology of polyvinyl alcohol glue and polyvinyl alcohol, applied in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of poor water resistance of transformer adhesives

Active Publication Date: 2016-08-10
ANHUI LANXIANG ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned prior art, the purpose of the present invention is to overcome the problem of poor water resistance of transformer glue in the prior art, thereby providing a polyvinyl alcohol glue with good water resistance and good viscosity and its preparation method

Method used

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Examples

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preparation example Construction

[0016] The present invention provides a kind of preparation method of polyvinyl alcohol glue, wherein, described preparation method comprises:

[0017] (1) mixing polyvinyl alcohol and water to obtain a mixture M1;

[0018] (2) adding formaldehyde and succinic acid to the mixture M1 to obtain the mixture M2;

[0019] (3) Add acrylamide to the mixture M2 to obtain the mixture M3;

[0020] (4) Ammonium persulfate is added to the mixture M3 to obtain polyvinyl alcohol glue; wherein,

[0021] Relative to 100 parts by weight of the polyvinyl alcohol, the amount of water used is 500-1200 parts by weight, the amount of formaldehyde used is 2-10 parts by weight, and the amount of succinic acid used is 8-15 parts by weight, The amount of acrylamide is 50-150 parts by weight, and the amount of ammonium persulfate is 200-500 parts by weight.

[0022] The present invention mixes polyvinyl alcohol and succinic acid, and at the same time adds acrylamide, ammonium persulfate and formaldeh...

Embodiment 1

[0031] Mix 100g of polyvinyl alcohol and 800g of water heated to 50°C to obtain a mixture M1; add 5g of formaldehyde and 10g of succinic acid to the mixture M1 heated to 9°C to obtain a mixture M2; add 80g of acrylamide to the mixture M2 to obtain Mixture M3: Add 300 g of ammonium persulfate to the mixture M3 cooled to 50° C. to obtain polyvinyl alcohol glue A1.

Embodiment 2

[0033] Mix 100g of polyvinyl alcohol and 1000g of water heated to 65°C to obtain a mixture M1; add 8g of formaldehyde and 12g of succinic acid to the mixture M1 heated to 100°C to obtain a mixture M2; add 120g of acrylamide to the mixture M2 to obtain Mixture M3; 400 g of ammonium persulfate was added to the mixture M3 cooled to 80° C. to obtain polyvinyl alcohol glue A2.

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Abstract

The invention discloses a polyvinyl alcohol glue, and a preparation method and application thereof. The preparation method comprises: (1) mixing polyvinyl alcohol and water to obtain a mixture M1; (2) adding formaldehyde and succinic acid into the mixture M1 to obtain a mixture M2; (3) adding acrylamide into the mixture M2 to obtain a mixture M3; and (4) adding ammonium persulfate into the mixture M3 to obtain the polyvinyl alcohol glue. Based on 100 parts by weight of polyvinyl alcohol, the usage amount of water is 500-1200 parts by weight, the usage amount of formaldehyde is 2-10 parts by weight, the usage amount of succinic acid is 8-15 parts by weight, the usage amount of acrylamide is 50-150 parts by weight, and the usage amount of ammonium persulfate is 200-500 parts by weight. Through the above design, the prepared polyvinyl alcohol glue has good waterproof performance, and thus the usage scope of the polyvinyl alcohol glue is substantially expanded.

Description

technical field [0001] The invention relates to the field of preparation of glue for transformers, in particular to a polyvinyl alcohol glue and its preparation method and application. Background technique [0002] Transformers are widely used in daily production and life. As large as a community, a factory, or as small as a family, transformers are closely related to our daily life. The internal structure of the transformer is also relatively complex. Many parts can be placed directly in the transformer box, but some parts need to be connected with each other with a certain connection relationship when placed in the box. Therefore, it is necessary to use various Glue connects them. During the use of the transformer, it is often in contact with the external environment, and the use environment of the transformer is relatively diverse, and it often encounters environments such as water vapor. [0003] Therefore, it is an urgent problem to be solved in the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06
Inventor 姚强吴子敏方裕西
Owner ANHUI LANXIANG ELECTRICAL EQUIP
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