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Water-soluble polymer adhesive and preparation method thereof

A technology of water-soluble polymers and adhesives, applied in the direction of adhesives, unsaturated alcohol copolymer adhesives, adhesive types, etc., can solve the problem of endangering the earth's environment and human health, unfavorable dismantling of cargo packing boxes, waste of materials and time-consuming and other problems, to achieve the effect of saving materials, saving man-hours, and broad application prospects

Inactive Publication Date: 2015-06-03
XIAN BRIGHT MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems caused by the extensive use of plastic stretch film: first, it is time-consuming and costly; second, it is not environmentally friendly. The production of stretch film consumes a lot of petroleum energy. Garbage will seriously endanger the earth's environment and human health
Traditionally used polymer adhesives have isotropic bonding strength, which is easy to form a permanent fix while fixing the cargo packaging box, which is not conducive to the disassembly of the cargo packaging box

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The water-soluble polymer adhesive of this embodiment is made of the following raw materials in weight percentage: 40% of modified starch solution, 3.2% of water-soluble polymer, 0.14% of film-forming agent, 0.064% of cross-linking agent, and the balance is water; The water-soluble polymer is polyvinyl alcohol; the film-forming agent is polyacrylamide; the cross-linking agent is trisodium trimetaphosphate; the modified starch solution is oxidized by a starch solution with a mass concentration of 8%. Gelatinization is made, and concrete preparation method comprises the following steps:

[0029] Step 1, in the starch solution of 8% mass concentration to 40g mass concentration, dropwise add the NaOH solution that mass concentration is 1% to the pH value of starch solution is 9, then the starch solution after adjusting the pH value is heated to 55 ℃, add to starch solution 6.72g of NaClO solution with a mass concentration of 10% was added dropwise to the mixture and incubat...

Embodiment 2

[0036] This embodiment is the same as Example 1, except that the water-soluble polymer is polyethylene glycol or acrylic acid polymer, or two or three of polyethylene glycol, polyvinyl alcohol and acrylic acid polymer. The film-forming agent is polyethylene oxide or polyvinylpyrrolidone, or two or three of polyacrylamide, polyethylene oxide and polyvinylpyrrolidone; the crosslinking agent is a thiol compound or sodium borate, Or two or three of thiol compound, trisodium trimetaphosphate and sodium borate.

Embodiment 3

[0038] The water-soluble polymer adhesive of this embodiment is made of the following raw materials in weight percentage: 30% of modified starch solution, 5% of water-soluble polymer, 0.1% of film-forming agent, 0.1% of cross-linking agent, and the balance is water; Described water-soluble polymer is polyethylene glycol and polyacrylic acid (acrylic polymers such as polymethyl acrylate, polyethyl acrylate, polybutyl acrylate, polymethyl methacrylate or polyethyl methacrylate can also be used to replace ) is mixed according to the mass ratio of 2:3; the film-forming agent is polyethylene oxide; the crosslinking agent is sodium borate; the modified starch solution is oxidized and gelatinized by the starch solution with a mass concentration of 6%. Made, the specific preparation method comprises the following steps:

[0039] Step 1, in 50g mass concentration is the starch solution of 6%, drip the NaOH solution that mass concentration is 3% to the pH value of starch solution is 10,...

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Abstract

The invention discloses a water-soluble polymer adhesive. The water-soluble polymer adhesive is prepared from the following materials in weight percent: 30-50 percent of modified starch solution, 1-5 percent of water-soluble polymer, 0.1-0.2 percent of film forming agent, 0.01-0.1 percent of crosslinking agent and the balance of water. In addition, the invention also discloses a method for preparing the water-soluble polymer adhesive. The water-soluble polymer adhesive disclosed by the invention is prepared from the water-soluble polymer and oxidized and gelatinized modified starch solution, aldehyde groups and carboxyl groups contained in the modified starch solution and the water-soluble polymer take effect with each other to mutually dehydrate to form a network structure, simultaneously the modified starch and the water-soluble polymer further cross link and produce crosslinking to form an interpenetrating network structure under the action of the crosslinking agent, and therefore, the water-soluble polymer adhesive just has high adhesion strength in the transverse direction and almost has no adhesion strength in the longitudinal direction.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a water-soluble polymer adhesive and a preparation method thereof. Background technique [0002] In the logistics and transportation of medicine, food, books, chemicals, electronics and other products, a stable pallet system is required to prevent any type of lateral displacement of goods during handling and stacking, resulting in tilting, falling and damage. At present, plastic wrapping films are mostly used, such as polyethylene film, polypropylene film, etc., to wrap and fix various goods on the pallet in multiple layers. The problems caused by the extensive use of plastic stretch film: first, it is time-consuming and costly; second, it is not environmentally friendly. The production of stretch film consumes a lot of petroleum energy. Garbage will seriously endanger the earth's environment and human health. [0003] As people are concerned about the exacerbatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J171/02C09J129/04C09J133/00C09J11/08C09J11/06C09J11/04
Inventor 闫蔚吴志刚
Owner XIAN BRIGHT MATERIAL TECH
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