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Pressure-sensitive adhesive tape capable of being repeatedly adhered and preparation method thereof

A technology of pressure-sensitive tape and pressure-sensitive adhesive, which is applied in the field of pressure-sensitive adhesive and can solve problems such as loss of viscosity

Inactive Publication Date: 2020-06-05
安徽富印新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pressure-sensitive tape that can be pasted repeatedly and its preparation method, aiming to solve the technical problem that the pressure-sensitive tape in the prior art will lose its stickiness after repeated pasting and peeling off

Method used

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  • Pressure-sensitive adhesive tape capable of being repeatedly adhered and preparation method thereof
  • Pressure-sensitive adhesive tape capable of being repeatedly adhered and preparation method thereof

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preparation example Construction

[0044] The embodiment of the present invention also provides the preparation method of the pressure-sensitive tape that can be pasted repeatedly, comprising the following steps:

[0045]1) Preparation of the dispersed phase: weigh isooctyl acrylate, methyl methacrylate, acrylic acid, hydroxyethyl acrylate, acetoacetoxyethyl methacrylate, glycidyl methacrylate and initiator , stirring and mixing uniformly to obtain the dispersed phase;

[0046] 2) Preparation of the continuous phase: Weigh the non-ionic surfactant, anionic surfactant and polymer dispersant in proportion, add deionized water and control the oil-water ratio to 1:1.5-3, stir and mix evenly, A continuous phase is produced;

[0047] 3) Preparation of emulsion: add the dispersed phase into the storage tank of the SPG membrane emulsification device, and extrude to the continuous phase through the through hole on the SPG membrane under the pressure of nitrogen to form the emulsion. 0.02~0.08Mpa; Stirring keeps the em...

Embodiment 1

[0060] A pressure-sensitive adhesive tape that can be pasted repeatedly in this embodiment includes a substrate 100 and a microsphere pressure-sensitive adhesive coating 200 disposed on the surface of the substrate 100 . The microspherical pressure-sensitive adhesive coating 200 includes the following raw materials by mass percentage: 75kg of isooctyl acrylate; 6kg of methyl methacrylate; 2kg of acrylic acid; 6kg of hydroxyethyl acrylate; 3kg of methyl Acetoacetoxyethyl acrylate; 1.5kg of nonionic surfactant; 4.5kg of anionic surfactant; 1kg of polymer dispersant; 1kg of initiator.

[0061] The initiator includes the following raw materials: benzoyl peroxide and 2,2-azobisisobutyronitrile, the mass ratio of which is 1:0.8. The base material 100 is a polyethylene foam plastic base material 100, and its density is 60kg / m 3 .

[0062] The embodiment of the present invention also provides the preparation method of the pressure-sensitive tape that can be pasted repeatedly, compri...

Embodiment 2

[0072] The difference between this embodiment and Embodiment 1 is that the microspherical pressure-sensitive adhesive coating 200 includes the following raw materials in terms of mass percentage: 79kg of isooctyl acrylate; 4kg of methyl methacrylate; 2kg of Acrylic acid; 4kg of hydroxyethyl acrylate; 2kg of acetoacetoxyethyl methacrylate; 1.2kg of nonionic surfactants; 2.2kg of anionic surfactants; 0.5kg of polymer dispersants; 0.3kg The initiator of; The thickener of 3kg, the plasticizer of 0.8kg, the glycidyl methacrylate of 0.5kg and the antifungal agent of 0.5kg.

[0073] In the preparation method of the described re-pastable pressure-sensitive adhesive tape provided in this embodiment:

[0074] 3) Preparation of the dispersed phase: weigh isooctyl acrylate, methyl methacrylate, acrylic acid, hydroxyethyl acrylate, acetoacetoxyethyl methacrylate, glycidyl methacrylate and initiator , stirring and mixing uniformly to obtain the dispersed phase.

[0075] 7) Glue compoundin...

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Abstract

The invention discloses a pressure-sensitive adhesive tape capable of being repeatedly adhered. The pressure-sensitive adhesive tape comprises a base material and a microsphere type pressure-sensitiveadhesive coating arranged on the surface of the base material, wherein the microsphere type pressure-sensitive adhesive coating comprises the following raw materials in percentage by mass: 75-85% of2-ethylhexyl acrylate, 2-6% of methyl methacrylate, 1-3% of acrylic acid, 2-6% of hydroxyethyl acrylate, 1-3% of acetoacetoxyethyl methacrylate, 1-1.5% of a nonionic surfactant, 2-7% of an anionic surfactant, 0.5-1% of a polymeric dispersant, and 0.3-1% of an initiator. The invention further discloses a preparation method of the pressure-sensitive adhesive tape capable of being repeatedly pasted.The pressure-sensitive adhesive tape capable of being repeatedly adhered still keeps good adhesive property after being repeatedly adhered and stripped for multiple times, and the stripping strength is not obviously reduced; tests show that the initial peel strength of the pressure-sensitive adhesive tape capable of being repeatedly pasted can reach 1.31 N / 25mm, and the minimum value of the peel strength after 100 times of pasting and peeling is 1.15 N / 25mm.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesives, in particular to a pressure-sensitive adhesive tape that can be pasted repeatedly and a preparation method thereof. Background technique [0002] Acrylate pressure-sensitive adhesives are copolymerized from various acrylate monomers. Acrylate copolymers are the most important type of resin-type pressure-sensitive adhesives. They have many advantages: colorless and transparent appearance and good weather resistance; generally good pressure-sensitive adhesive performance can be obtained without using additives such as tackifying resin, softener and anti-aging agent. [0003] Tapes made from acrylate pressure-sensitive adhesives are pressure-sensitive tapes. The Chinese patent with the patent number ZL201910640915.1 discloses a pressure-sensitive adhesive tape, a preparation method thereof, and a resin composition for preparing a pressure-sensitive adhesive tape. The raw mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/26C09J133/08C08F220/18C08F220/14C08F220/06C08F220/20C08F220/28C08F220/32C08F2/20
CPCC09J7/385C09J7/26C09J133/14C08F220/18C08F2/20C09J2433/00C09J2423/046
Inventor 徐振东韩奎一
Owner 安徽富印新材料股份有限公司
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