CN102977823B - Environmentally-friendly glue for wallpaper and preparation method thereof - Google Patents

Abstract

The invention relates to environmentally-friendly glue for a wallpaper and a preparation method thereof. The environmentally-friendly glue for a wallpaper comprises: by weight, 1, acrylic acid or methacrylic acid, 2, butyl acrylate, 3, one or more acrylates or methacrylate, 4, one or more emulsifiers, 5, a chain transfer agent, 6, an initiator, 7, ammonium bicarbonate, 8, deionized water, 9, hydrogen peroxide, 10, ascorbic acid, 11, a penetrant, 12, a thickening agent, 13, a defoamer and 14, ammonia water. The preparation method comprises the following steps of preparing a pre-emulsion, heating, adding the initiator into a reaction system, carrying out heat preservation, dropwisely adding the pre-emulsion, the initiator and ammonium bicarbonate into the reaction system, cooling, and adding hydrogen peroxide, ascorbic acid, the penetrant, the defoamer, ammonia water, deionized water and the thickening agent into the reaction system. The preparation method does not adopt formaldehyde and a toxic organic solvent, and has the advantages of good stability, high solidity, low viscosity, excellent comprehensive properties, high bonding strength, simple processes and convenient operation.

Description

A kind of Environmentally-frieglue glue for wallpaper and preparation method thereof

Technical field

The present invention relates to Environmentally-frieglue glue for wallpaper and manufacture method thereof, particularly relate to water-based paper and take PVC as Environmentally-frieglue glue for wallpaper and the manufacture method thereof of base material.

Background technology

Decorations industry glue is in the majority mainly with the not environmentally glue containing free formaldehyde, although this kind of glue price is low, adhesiveproperties good; But formaldehyde is a kind of colourless intense stimulus gas, is defined as carcinogenic and teratogen by the World Health Organization, and has listed glue banned substance in.Undoubtedly, formaldehyde is to the toxic effect of the mankind, if particularly employ formaldehyde in glue, then this kind of glue is after indoor are used, Form aldehyde release is slow especially, can be tested with the existence of free formaldehyde after even reaching the several years in indoor environment, the injury caused to people is irreversible, now a lot of disease of the clear and definite mankind all to there is formaldehyde with indoor relevant.Therefore, develop a kind of containing formaldehyde, the indoor decorating glue of safety and environmental protection is very urgent.

Summary of the invention

The object of this invention is to provide a kind of Environmentally-frieglue glue for wallpaper not containing formaldehyde, to solve the above-mentioned problems in the prior art.

Another object of the present invention is to provide a kind of preparation method of above-mentioned glue.

In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:

A kind of Environmentally-frieglue glue for wallpaper, composed of the following components, each components based on weight percentage content is:

As preferably, described acrylate is one or both in methyl acrylate, Hydroxyethyl acrylate, Propylene glycol monoacrylate.

As preferably, described methacrylic ester is methyl methacrylate, Rocryl 410 or hydroxyethyl methylacrylate.

As preferably, described emulsifying agent is phenolic ether sulphate or containing one or both in the polyether thiourea hydrochlorate of allyl group alkoxyl group.

As preferably, described chain-transfer agent is n-dodecyl mereaptan or aliphatics mercaptan.

As preferably, described initiator is ammonium persulphate or Potassium Persulphate.

The glue that aforesaid combination and component concentration make the present invention be formed, not containing formaldehyde, and has excellent performance.

Prepare the method for above-mentioned Environmentally-frieglue glue for wallpaper, comprise the following steps successively:

A. start reactor 1 agitator, rotating speed is 30r/min;

B. the deionized water of the ionized water total amount 60% that accounts for is added;

C.5, after ~ 10min, the emulsifying agent accounting for emulsifying agent total amount 4/5 is added;

D.5, after ~ 10min, whole acrylic or methacrylic acid is added;

E.5, after ~ 10min, the mixture of whole acrylate or methacrylic ester and butyl acrylate is added;

F.5, after ~ 10min, whole chain-transfer agents is added;

G.5 after ~ 10min, add the initiator accounting for initiator total amount 1/3, after adding initiator, rotating speed increases to as 85r/min, stirs 30min, obtains pre-emulsion;

H. start reactor 2 agitator, rotating speed is 60r/min;

I. the deionized water adding the ionized water total amount 38% that accounts for and the pre-emulsion accounting for pre-emulsion total amount 1/10 and remaining emulsifying agent;

J. heat up, when temperature is elevated to 72-78 DEG C, add the initiator accounting for initiator total amount 1/3, after continuing to be warmed up to 82-88 DEG C, be incubated 30min;

K. continue insulation, drip remaining pre-emulsion, initiator and whole bicarbonate of ammonia, the tear drop time is about 3-4h simultaneously;

L. after tear drop terminates, insulation 40min;

M. lower the temperature, when temperature is down to 65 DEG C, add whole hydrogen peroxide and whole xitix successively;

N. lower the temperature, when temperature is down to 60 DEG C, add whole permeate agents and whole defoamers successively;

O. lower the temperature, when temperature is down to 50 DEG C, add whole ammoniacal liquor;

P. the deionized water and whole thickening materials that account for total amount 2% is added;

Q. lower the temperature, when temperature is down to 30 DEG C, discharging completes preparation.

In aforesaid method, step g, pre-emulsification the even monomer of dispersing and mixing, control molecular weight and distribution thereof; Step g, adds initiator in pre-emulsion, makes initiator enter micella, obtains the micelle that size distribution is narrower; Step k, controls time for adding and temperature, can control speed of response, improves transformation efficiency; Step m, adds redox initiator, is to be fallen by the monomer reaction being wrapped in ammonium persulphate inside micelle and cannot entering initiation, improves transformation efficiency and reduces the smell of glue; Step o, add ammoniacal liquor regulation system pH value for alkalescence, when can prevent from being coated with, glue shrinks.

According to technical scheme of the present invention, can obtain and not add formaldehyde, do not add toxic organic solvents, can not work the mischief to Human and nature, and product has good stability, high-solid lower-viscosity, excellent combination property, cohesive strength is high, technique is simple, the advantage such as easy to operate.

Embodiment

Below the present invention is described in further detail:

In the examples below, represent the effective constituent of glue with solid content, this numerical value is higher, illustrates that effective constituent is more, and unit plane gum deposit amount is more, and cohesiveness is better; Represent the viscosity of glue by viscosity, this numerical value is higher, illustrates that viscosity is better; With just gluing the tack representing glue, this numerical value is higher, illustrates that glue is better to the wettability of base material; With holding the cohesive strength of gluing and representing glue with stripping strength, this numerical value is higher, and illustrate that the cohesive strength of glue is larger, cohesiveness is better.

Embodiment 1

By each component of specifying in table 1 and content, carry out following preparation process successively:

A. start reactor 1 agitator, rotating speed is 30r/min;

B. the deionized water of the ionized water total amount 60% that accounts for is added;

C.5, after ~ 10min, the emulsifying agent accounting for emulsifying agent total amount 4/5 is added;

D.5, after ~ 10min, whole vinylformic acid is added;

E.5, after ~ 10min, whole acrylate and the mixture of butyl acrylate is added;

F.5, after ~ 10min, whole chain-transfer agents is added;

G.5 after ~ 10min, add the initiator accounting for initiator total amount 1/3, after adding initiator, rotating speed increases to as 85r/min, stirs 30min, obtains pre-emulsion;

H. start reactor 2 agitator, rotating speed is 60r/min;

I. the deionized water adding the ionized water total amount 38% that accounts for and the pre-emulsion accounting for pre-emulsion total amount 1/10 and remaining emulsifying agent;

J. heat up, when temperature is elevated to 75 DEG C, add the initiator accounting for initiator total amount 1/3, after continuing to be warmed up to 85 DEG C, be incubated 30min;

K. continue insulation, drip remaining pre-emulsion, initiator and whole bicarbonate of ammonia, the tear drop time is about 3-4h simultaneously;

L. after tear drop terminates, insulation 40min;

M. lower the temperature, when temperature is down to 65 DEG C, add whole hydrogen peroxide and whole xitix successively;

N. lower the temperature, when temperature is down to 60 DEG C, add whole permeate agents and whole defoamers successively;

O. lower the temperature, when temperature is down to 50 DEG C, add whole ammoniacal liquor;

P. the deionized water and whole thickening materials that account for total amount 2% is added;

Q. lower the temperature, when temperature is down to 30 DEG C, discharging completes preparation.

Wherein, acrylate is Hydroxyethyl acrylate, and chain-transfer agent is n-dodecyl mereaptan, and initiator is ammonium persulphate, and emulsifying agent is phenolic ether sulphate.

The assay method of GB/T 2793-1995 tackiness agent non-volatile content is adopted to measure the solid content of obtained glue; The pH value assay method of GB/T 14518-1993 tackiness agent is adopted to measure the pH value of obtained glue; GB/T 4852-2002_ pressure-sensitive adhesive tape tack testing method is adopted to measure the first sticky of obtained glue; It is sticky that employing GB/T 4851-1998 pressure sensitive adhesive holds holding of the obtained glue of Adhesion Test Method mensuration; GB/T2792-1998 pressure-sensitive adhesive tape 180 ° of peeling strength test test determines are adopted to obtain the peeling force of glue.

List measurement result in Table 1.

Embodiment 2

Repeat the method for embodiment 1 by each component concentration of specifying in table 1, and list measurement result.

Embodiment 3

Repeat the method for embodiment 1 by each component concentration of specifying in table 1, and list measurement result.

Embodiment 4

Repeat the method for embodiment 1 by each component concentration of specifying in table 1, and list measurement result.

Embodiment 5

Repeat the method for embodiment 1 by each component concentration of specifying in table 1, and list measurement result.

In following table 1, the test data of each embodiment illustrates, no matter at single performance, or in over-all properties, the present invention has good performance.

Table 1

Embodiment 6

By each component of specifying in table 2 and content, carry out following preparation process successively:

A. start reactor 1 agitator, rotating speed is 30r/min;

B. the deionized water of the ionized water total amount 60% that accounts for is added;

C.5, after ~ 10min, the emulsifying agent accounting for emulsifying agent total amount 4/5 is added;

D.5, after ~ 10min, whole methacrylic acids is added;

E.5, after ~ 10min, whole methacrylic esters and the mixture of butyl acrylate is added;

F.5, after ~ 10min, whole chain-transfer agents is added;

G.5 after ~ 10min, add the initiator accounting for initiator total amount 1/3, after adding initiator, rotating speed increases to as 85r/min, stirs 30min, obtains pre-emulsion;

H. start reactor 2 agitator, rotating speed is 60r/min;

I. the deionized water adding the ionized water total amount 38% that accounts for and the pre-emulsion accounting for pre-emulsion total amount 1/10 and remaining emulsifying agent;

J. heat up, when temperature is elevated to 75 DEG C, add the initiator accounting for initiator total amount 1/3, after continuing to be warmed up to 85 DEG C, be incubated 30min;

K. continue insulation, drip remaining pre-emulsion, initiator and whole bicarbonate of ammonia, the tear drop time is about 3-4h simultaneously;

L. after tear drop terminates, insulation 40min;

M. lower the temperature, when temperature is down to 65 DEG C, add whole hydrogen peroxide and whole xitix successively;

N. lower the temperature, when temperature is down to 60 DEG C, add whole permeate agents and whole defoamers successively;

O. lower the temperature, when temperature is down to 50 DEG C, add whole ammoniacal liquor;

P. the deionized water and whole thickening materials that account for total amount 2% is added;

Q. lower the temperature, when temperature is down to 30 DEG C, discharging completes preparation.

Wherein, methacrylic ester is Rocryl 410, and chain-transfer agent is n-dodecyl mereaptan, and initiator is Potassium Persulphate, and emulsifying agent is the polyether thiourea hydrochlorate containing allyl group alkoxyl group.

The assay method of GB/T 2793-1995 tackiness agent non-volatile content is adopted to measure the solid content of obtained glue; The pH value assay method of GB/T 14518-1993 tackiness agent is adopted to measure the pH value of obtained glue; GB/T 4852-2002_ pressure-sensitive adhesive tape tack testing method is adopted to measure the first sticky of obtained glue; It is sticky that employing GB/T 4851-1998 pressure sensitive adhesive holds holding of the obtained glue of Adhesion Test Method mensuration; GB/T2792-1998 pressure-sensitive adhesive tape 180 ° of peeling strength test test determines are adopted to obtain the peeling force of glue.

List measurement result in table 2.

Embodiment 7

Repeat the method for embodiment 6 by each component concentration of specifying in table 2, and list measurement result.

Embodiment 8

Repeat the method for embodiment 6 by each component concentration of specifying in table 2, and list measurement result.

Embodiment 9

Repeat the method for embodiment 6 by each component concentration of specifying in table 2, and list measurement result.

Embodiment 10

Repeat the method for embodiment 6 by each component concentration of specifying in table 2, and list measurement result.

In following table 2, the test data of each embodiment illustrates, no matter at single performance, or in over-all properties, the present invention has good performance.

Table 2

In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.

Claims (1)

1. prepare a method for Environmentally-frieglue glue for wallpaper, it is characterized in that: be made up of following steps successively:

What A. take following component and corresponding weight percent prepares material:

Described acrylate is one or both in methyl acrylate, Isooctyl acrylate monomer, Hydroxyethyl acrylate, Propylene glycol monoacrylate;

Described methacrylic ester is methyl methacrylate, Rocryl 410 or hydroxyethyl methylacrylate;

Described emulsifying agent be phenolic ether sulphate or containing allyl group alkoxyl group polyether thiourea hydrochlorate in one or both;

Described chain-transfer agent is n-dodecyl mereaptan;

Described initiator is ammonium persulphate or Potassium Persulphate;

B. following steps are carried out successively:

A. start reactor 1 agitator, rotating speed is 30r/min;

B. the deionized water of the ionized water total amount 60% that accounts for is added;

C.5, after ~ 10min, the emulsifying agent accounting for emulsifying agent total amount 4/5 is added;

D.5, after ~ 10min, whole acrylic or methacrylic acid is added;

E.5, after ~ 10min, the mixture of whole acrylate or methacrylic ester and butyl acrylate is added;

F.5, after ~ 10min, whole chain-transfer agents is added;

G.5 after ~ 10min, add the initiator accounting for initiator total amount 1/3, after adding initiator, rotating speed increases to as 85r/min, stirs 30min, obtains pre-emulsion;

H. start reactor 2 agitator, rotating speed is 60r/min;

I. the deionized water adding the ionized water total amount 38% that accounts for and the pre-emulsion accounting for pre-emulsion total amount 1/10 and remaining emulsifying agent;

J. heat up, when temperature is elevated to 72-78 DEG C, add the initiator accounting for initiator total amount 1/3, after continuing to be warmed up to 82-88 DEG C, be incubated 30min;

K. continue insulation, drip remaining pre-emulsion, initiator and whole bicarbonate of ammonia, the tear drop time is 3-4h simultaneously;

L. after tear drop terminates, insulation 40min;

M. lower the temperature, when temperature is down to 65 DEG C, add whole hydrogen peroxide and whole xitix successively;

N. lower the temperature, when temperature is down to 60 DEG C, add whole permeate agents and whole defoamers successively;

O. lower the temperature, when temperature is down to 50 DEG C, add whole ammoniacal liquor;

P. the deionized water and whole thickening materials that account for total amount 2% is added;

Q. lower the temperature, when temperature is down to 30 DEG C, discharging completes preparation.