Method for treating spent glue by using acid-base solution

A solution treatment, acid-base technology, applied in the field of solid glue, to achieve the effect of reducing environmental pollution, saving resources, and maintaining a long time

Inactive Publication Date: 2020-02-11
HAINAN LANDAO ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But little research has been done on how to restore stickiness to dead glue sticks

Method used

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  • Method for treating spent glue by using acid-base solution
  • Method for treating spent glue by using acid-base solution
  • Method for treating spent glue by using acid-base solution

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Embodiment Construction

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] A kind of method utilizing acid-base solution to process invalid glue, comprises the following steps,

[0021] (1) To invalidate the stickiness of the glue stick: take a stick with a mass of m s The glue stick marked No. 1 was exposed to the air, and the remaining mass was measured every 2 days, recorded as m n (n is 2, 4, 6...), when the glue stick fails completely, the quality record is m t , to calculate the mass remaining rate and mass loss change rate of the glue stick,

[0022] ...

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Abstract

The invention discloses a method for treating spent glue by using an acid-base solution. The method comprises the following steps of: deprivation of the stickiness of a glue stick: exposing one glue stick having a mass of m<s> and marked as No. 1 in the air, putting another glue stick into an air-blowing electrothermal constant-temperature drying box, setting a temperature to be 80 DEG C, and baking the another glue stick for 40 min to deprive the stickiness of the another glue stick, marking the another glue stick as No. 2, and, namely marking a normal glue stick without any treatment as No.3; stickiness recovery of the glue stick: treating the glue stick No. 2 with the acid-base solution, and checking the stickiness recovery effect of the glue stick; and stickiness recovery test: carrying out a peeling test and measuring stickiness retention time after the stickiness is recovered. The beneficial effects of the invention are as follows: after the glue stick No. 2 has been soaked in oxalic acid with a concentration of 5% for 30 min or has been soaked in acetic acid and in an oxalic acid with a concentration of 10% for 15 min respectively, the stickiness of glue stick No. 2 is wellrecovered, and the stickiness retention time is long; the stickiness of the glue stick is recovered in a simple and feasible manner; and the waste rate of glue sticks is lowered, which is of certainsignificance to conservation of resources and reduction of environmental pollution.

Description

technical field [0001] The invention relates to the technical field of solid glue, in particular to a method for treating expired glue with an acid-base solution. Background technique [0002] In recent years, the development of adhesives has been extensive, such as nano-adhesives, high-temperature-resistant adhesives, ultra-low-temperature adhesives, conductive adhesives, magnetic-conductive adhesives, sealing adhesives, photosensitive adhesives, etc. . Solid glue is also a kind of adhesive. Nowadays, solid glue is widely used, and solid glue is used in offices and when students are doing homework. Most of the main components of solid glue used in our daily life are polyvinyl alcohol. Polyvinyl alcohol (PVA) has good adhesion to porous and hydrophilic surfaces such as wood, paper, textiles and leather surfaces, and is widely used in the production of adhesives, coatings, emulsifiers, textiles, and paper processing products such as agents and plastic films. [0003] Sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J9/00G01N19/04
CPCC09J9/005G01N19/04
Inventor 刘明旺庄永卿符志坚沙马什布
Owner HAINAN LANDAO ENVIRONMENTAL PROTECTION IND
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