CN113845870A - PVC floor glue for non-absorption base layer and preparation method thereof - Google Patents

PVC floor glue for non-absorption base layer and preparation method thereof Download PDF

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Publication number
CN113845870A
CN113845870A CN202110282194.9A CN202110282194A CN113845870A CN 113845870 A CN113845870 A CN 113845870A CN 202110282194 A CN202110282194 A CN 202110282194A CN 113845870 A CN113845870 A CN 113845870A
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Prior art keywords
emulsion
pvc floor
floor glue
parts
base layer
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李伟伟
李常林
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Shanghai Yu Xin Mstar Technology Ltd
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Shanghai Yu Xin Mstar Technology Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention belongs to the technical field of water-based adhesives, and particularly relates to a PVC floor adhesive for a non-absorption base layer and a preparation method thereof. The PVC floor glue comprises, by weight, 70-90 parts of water-based emulsion, 1-5 parts of pyrolysis sealing type curing agent, 5-20 parts of tackifying emulsion, 0.5-3 parts of thickening agent, 0.1-1 part of defoaming agent, 0.2-1.0 part of bactericide and 0-2 parts of pH value regulator. The single-component PVC floor glue prepared by compounding the specific aqueous emulsion and the thermal decomposition sealing type curing agent is easy to construct, can improve the cross-linking density among copolymer molecular chains after certain hot pressing, improves the cohesive strength and the peel strength of a polymer, and can greatly improve the temperature resistance and the water resistance of the adhesive.

Description

PVC floor glue for non-absorption base layer and preparation method thereof
Technical Field
The invention belongs to the technical field of water-based adhesives, and particularly relates to a PVC floor adhesive for a non-absorption base layer and a preparation method thereof.
Background
The water-based acrylic emulsion has the advantages of high peel strength, wide production source, simple preparation process, high film forming speed, high transparency and excellent adhesion to various substrates, and is increasingly researched and applied in the fields of adhesives, coatings, leather, building sealing, medical polymers, water treatment and the like.
Along with the enhancement of environmental protection consciousness of people, the demand of the emulsion type acrylate pressure-sensitive adhesive is more and more, and compared with the solvent type pressure-sensitive adhesive, the emulsion type acrylate pressure-sensitive adhesive has the advantages of low cost, safety, low toxicity, easy operation during polymerization, higher average molecular weight and the like. However, the pure acrylic resin emulsion pressure-sensitive adhesive has poor hardness, water resistance and high temperature resistance due to the linear molecular structure and lack of crosslinking in molecules. These deficiencies limit their use, for example, non-absorbent substrates adhered to PVC flooring in the building industry, which are susceptible to adhesive failure.
At present, the high-performance pressure-sensitive adhesive with better comprehensiveness is mainly occupied by products in Europe, America and Japan, and although a few research institutions or scientific and technological enterprises in China claim to have part of high-performance water-based pressure-sensitive adhesive technology, a larger gap still exists. The method mainly shows the instability of scale production, the performance cannot reach the comprehensive performance of foreign technologies, only can reach one part of the foreign technologies on one aspect, and the method is suitable for specific regional markets or specific purposes. At present, the domestic research on the water-based acrylate pressure-sensitive adhesive mainly focuses on the preparation and modification of the conventional performance emulsion, the research on the application process is less, and the future high performance is the hotspot and development trend of the research on the water-based acrylate pressure-sensitive adhesive.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a PVC floor glue for a non-absorption base layer, and the PVC floor glue comprises, by weight, 70-90 parts of a water-based emulsion, 1-5 parts of a pyrolysis sealing type curing agent, 5-20 parts of a tackifying emulsion, 0.5-3 parts of a thickening agent, 0.1-1 part of an antifoaming agent, 0.2-1.0 part of a bactericide, and 0-2 parts of a pH value regulator.
As a preferable technical scheme, the solid content of the aqueous emulsion is 30-60 wt%.
As a preferable technical scheme of the invention, the aqueous emulsion is one or more of aqueous polyurethane emulsion, aqueous polyester emulsion, aqueous acrylic emulsion, acrylic acid modified polyurethane emulsion and polyurethane modified acrylic emulsion.
As a preferable technical scheme, the tackifying emulsion is one or more of terpene phenol resin emulsion, hydrogenated rosin emulsion, esterified rosin emulsion, polymerized rosin emulsion and rosin acid emulsion.
In a preferred embodiment of the present invention, the thickener is one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, alkali-swellable acrylic emulsion, and polyurethane emulsion thickener.
In a preferred embodiment of the present invention, the defoaming agent is at least one of a silicone defoaming agent, a polyether defoaming agent, a higher alcohol defoaming agent, and a polyether-modified silicone defoaming agent.
As a preferable technical scheme of the invention, the bactericide is one or more of methylisothiazolinone, methylchloroisothiazolinone and 1, 2-benzisothiazolin-3-one.
As a preferable technical scheme of the invention, the pH value regulator is one of monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, potassium hydroxide, ammonia water and 2-amino-2-methyl-1-propanol.
As a preferable technical scheme of the invention, the deblocking temperature of the pyrolysis sealing type curing agent is 100-150 ℃.
The second aspect of the invention provides a preparation method of PVC floor glue for a non-absorption base layer, which comprises the following steps: and (3) uniformly mixing and stirring the water-based emulsion, the tackifying emulsion, the thickening agent, the bactericide and the pH value regulator, adding the defoaming agent, uniformly mixing and stirring, then adding the pyrolysis sealing type curing agent, uniformly mixing and stirring to obtain the PVC floor glue.
Has the advantages that:
1. the single-component PVC floor glue prepared by compounding the specific water-based emulsion and the pyrolysis sealing type curing agent is easy to construct, can improve the crosslinking density among copolymer molecular chains after certain hot pressing, improves the cohesive strength and peel strength of the polymer, and can greatly improve the temperature resistance and water resistance of the adhesive.
2. The specific tackifying emulsion is added in the invention, and the applicant finds that the initial adhesion and the peel strength of the adhesive can be obviously improved by controlling the proportion of the tackifying emulsion to the aqueous emulsion;
3. the proper amount of the thickening agent, the defoaming agent, the bactericide and the pH value regulator is added in the PVC floor glue, so that the coating process of the PVC floor glue is more practical;
4. the invention not only eliminates the defect that the foam of a system brought by the tackifying emulsion is not easy to remove, but also enables the system to be more stable by selecting a specific defoaming agent.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of values, with a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 to 5" is disclosed, the described range should be construed as including the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein in the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes equivalents thereof that are acceptable without resulting in a change in the basic function to which it is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the description and claims of this application, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In order to solve the technical problems, the first aspect of the invention provides a PVC floor glue for a non-absorption base layer, and the PVC floor glue comprises, by weight, 70-90 parts of a water-based emulsion, 1-5 parts of a pyrolysis sealing type curing agent, 5-20 parts of a tackifying emulsion, 0.5-3 parts of a thickening agent, 0.1-1 part of an antifoaming agent, 0.2-1.0 part of a bactericide, and 0-2 parts of a pH value regulator.
In a preferred embodiment, the raw materials of the PVC floor glue comprise, by weight, 75-90 parts of aqueous emulsion, 1-3 parts of pyrolysis seal type curing agent, 4-18 parts of tackifying emulsion, 0.8-1.5 parts of thickener, 0.3-0.8 part of defoamer, 0.3-0.8 part of bactericide and 0.8-1.5 parts of pH value regulator.
Aqueous emulsion
In one embodiment, the aqueous emulsion has a solid content of 30 to 60 wt%; further preferably, the solid content of the aqueous emulsion is 45-55 wt%.
In one embodiment, the aqueous emulsion is one or more of an aqueous polyurethane emulsion, an aqueous polyester emulsion, an aqueous acrylic emulsion, an acrylic modified polyurethane emulsion, and a polyurethane modified acrylic emulsion.
In a preferred embodiment, the aqueous emulsion is one or more of aqueous polyurethane emulsion, aqueous acrylic emulsion and polyurethane modified acrylic emulsion; further preferably, the aqueous emulsion is an aqueous polyurethane emulsion or a polyurethane modified acrylic emulsion.
In one embodiment, the aqueous polyurethane emulsion is Dispercoll U54.
In one embodiment, the polyurethane modified acrylic emulsion is Sancure AU-4010.
The applicant finds that the PVC floor glue prepared by using the aqueous polyurethane emulsion or the polyurethane modified acrylic emulsion with the solid content of 45-55 wt% in the system has good peel strength. Probably because the solid content of the aqueous polyurethane emulsion or the polyurethane modified acrylic emulsion has high cohesive force and better initial adhesion with other components in the system.
Viscosity-increasing emulsion
In one embodiment, the weight ratio of the viscosifying emulsion to the aqueous emulsion is 1: (5-20); further preferably, the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: (6-18).
In one embodiment, the tackifying emulsion is one or more of a terpene-phenol resin emulsion, a hydrogenated rosin emulsion, an esterified rosin emulsion, a polymerized rosin emulsion, and a rosin acid emulsion.
In a preferred embodiment, the tackifying emulsion is an esterified rosin emulsion and/or a polymerized rosin emulsion; further preferably, the tackifying emulsion is a polymerized rosin emulsion.
In one embodiment, the polymerized rosin emulsion has a softening point of 30 ℃ to 170 ℃; further preferably, the softening point of the polymerized rosin emulsion is 90-120 ℃; still more preferably, the polymerized rosin emulsion has a softening point of 100 ℃.
In one embodiment, the polymerized rosin emulsion is purchased from guaninol 6150, flying in Guangxi province.
The applicant has unexpectedly found that when a polymerized rosin emulsion with a specific softening point is used to interact with an aqueous emulsion, and when the softening point is too low or too high, the performance of the prepared PVC floor glue is poor, probably because when the softening point of the polymerized rosin emulsion is too low, the tackifying performance of the polymerized rosin emulsion in a system is poor, and when the softening point is too high, the compatibility of the tackifying emulsion and the system is poor; applicants have also found that it is desirable in the present system to have a weight ratio of the viscosifying emulsion to the aqueous emulsion of from 1: (6-18) is better, probably because the addition of the polymerized rosin emulsion can improve the wettability and initial adhesion of the PVC floor glue, but when the addition amount of the polymerized rosin emulsion is too large, the crosslinking density of the system can be reduced, so that the mechanical property of the PVC floor glue is influenced.
Thickening agent
In one embodiment, the thickener is one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, alkali-swellable acrylic emulsion, polyurethane emulsion thickener.
In a preferred embodiment, the thickener is an alkali-swellable acrylic emulsion and/or a polyurethane emulsion thickener; further preferably, the thickener is a polyurethane emulsion thickener.
In one embodiment, the polyurethane emulsion thickener is coapu 830W.
Defoaming agent
In one embodiment, the defoaming agent is at least one of a silicone defoaming agent, a polyether defoaming agent, a higher alcohol defoaming agent, and a polyether-modified silicone defoaming agent.
In a preferred embodiment, the defoamer is a higher alcohol type defoamer.
In one embodiment, the higher alcohol defoamer is purchased from Xister environmental protection materials science and technology, Inc. of Fujian province under model number XST-4930.
In the invention, the polymerized rosin in the polymerized rosin emulsion has certain surface activity and has certain stabilization effect on foam, and the specific defoaming agent is added into the system to remove the foam in the system. Probably because the higher alcohol type defoamer mixes easily with the water in the system of the present invention and is environmentally friendly.
The defoaming agent is a silicone defoaming agent, and the silicone defoaming agent is purchased from Xister environmental protection materials of Fujian province, the Limited liability company and has the model of Z-201.
Bactericide
In one embodiment, the antimicrobial agent is one or more of methylisothiazolinone, methylchloroisothiazolinone, 1, 2-benzisothiazolin-3-one; 1, 2-benzisothiazolin-3-one (CAS number: 2634-33-5) is preferred.
pH value regulator
In one embodiment, the pH adjusting agent is one of monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, potassium hydroxide, ammonia, 2-amino-2-methyl-1-propanol (AMP-95); preferably aqueous ammonia.
Pyrolysis sealing type curing agent
In one embodiment, the deblocking temperature of the pyrolysis sealing type curing agent is 100-150 ℃; preferably 100 deg.c.
In one embodiment, the thermal decomposition-blocking curing agent is a hydrophilic aliphatic isocyanate.
In one embodiment, the aliphatic isocyanate is purchased from Shanghai Siwa chemical FB-15.
The second aspect of the invention provides a preparation method of PVC floor glue for a non-absorption base layer, which comprises the following steps: and (3) uniformly mixing and stirring the water-based emulsion, the tackifying emulsion, the thickening agent, the bactericide and the pH value regulator, adding the defoaming agent, uniformly mixing and stirring, then adding the pyrolysis sealing type curing agent, uniformly mixing and stirring to obtain the PVC floor glue.
In one embodiment, the PVC floor glue is used by the following method: and (3) bonding a PVC floor on the non-absorption base layer, coating the PVC floor glue on two sides, immediately attaching the glue film after water is evaporated and the glue film is dried, then carrying out hot pressing for 2-3 minutes by using a heating and pressing roller at 100 ℃, and maintaining for 48 hours.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
The PVC floor glue for the non-absorption base layer is improved in the embodiment 1, and the raw materials of the PVC floor glue comprise, by weight, 90 parts of water-based emulsion, 2 parts of pyrolysis sealing type curing agent, 5 parts of tackifying emulsion, 1 part of thickener, 0.5 part of defoaming agent, 0.5 part of bactericide and 1 part of pH value regulator;
the solid content of the aqueous emulsion is 50 wt%; the aqueous emulsion is aqueous polyurethane emulsion; the aqueous polyurethane emulsion is Dispercoll U54 from Corsia;
the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: 18; the tackifying emulsion is polymerized rosin emulsion; the softening point of the polymerized rosin emulsion is 100 ℃; the polymerized rosin emulsion is purchased from Guangxi Fei Zhuo Guiinox 6150;
the thickening agent is a polyurethane emulsion thickening agent; the polyurethane emulsion thickener is Coapur 830W;
the defoaming agent is a high-carbon alcohol type defoaming agent; the high-alcohol defoaming agent is purchased from Xister environmental protection materials science and technology Limited liability company in Fujian province, and has the model of XST-4930;
the bactericide is 1, 2-benzisothiazolin-3-one (CAS number: 2634-33-5);
the pH value regulator is ammonia water;
the deblocking temperature of the pyrolysis sealing type curing agent is 100 ℃; the pyrolysis sealing type curing agent is hydrophilic aliphatic isocyanate; the aliphatic isocyanate was purchased from Shanghai Siwa chemical FB-15.
The preparation method of the PVC floor glue comprises the following steps: uniformly mixing and stirring the aqueous emulsion, the tackifying emulsion, the thickening agent, the bactericide and the pH value regulator, adding the defoaming agent, uniformly mixing and stirring, then adding the pyrolysis sealing type curing agent, uniformly mixing and stirring to obtain the PVC floor glue.
Example 2
The embodiment 2 of the invention provides a PVC floor glue for a non-absorption base layer, which comprises the following raw materials, by weight, 80 parts of water-based emulsion, 2 parts of pyrolysis sealing type curing agent, 15 parts of tackifying emulsion, 1 part of thickener, 0.5 part of defoamer, 0.5 part of bactericide and 1 part of pH value regulator;
the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: 6;
the aqueous emulsion, the thermal decomposition sealing type curing agent, the tackifying emulsion, the thickening agent, the defoaming agent, the bactericide and the pH value regulator are the same as those in the embodiment 1;
the preparation method of the PVC floor glue is the same as that of the example 1.
Example 3
Embodiment 3 of the invention provides a PVC floor glue for a non-absorption base layer, which is the same as embodiment 1 in specific implementation mode, and is characterized in that the water-based emulsion is polyurethane modified acrylic emulsion, specifically Sancure AU-4010.
Example 4
Embodiment 4 of the invention provides a PVC floor glue for a non-absorption base layer, which is the same as embodiment 2 in specific implementation mode, and is characterized in that the water-based emulsion is polyurethane modified acrylic emulsion, specifically Sancure AU-4010.
Example 5
Example 5 of the present invention is an improved PVC floor glue for a non-absorbent base layer, and the specific embodiment thereof is the same as example 1, except that the aqueous emulsion is an aqueous acrylic emulsion, specifically, korean Soluryl R-20.
Example 6
Example 6 of the present invention is an improved PVC floor glue for a non-absorbent base layer, and the specific embodiment thereof is the same as example 2, except that the aqueous emulsion is an aqueous acrylic emulsion, specifically, korean Soluryl R-20.
Example 7
Embodiment 7 of the invention provides a PVC floor glue for a non-absorption base layer, which comprises 80 parts by weight of aqueous emulsion, 2 parts by weight of pyrolysis sealing type curing agent, 20 parts by weight of tackifying emulsion, 1 part by weight of thickener, 0.5 part by weight of defoamer, 0.5 part by weight of bactericide and 1 part by weight of pH value regulator;
the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: 4;
the aqueous emulsion, the thermal decomposition sealing type curing agent, the tackifying emulsion, the thickening agent, the defoaming agent, the bactericide and the pH value regulator are the same as those in the embodiment 1;
the preparation method of the PVC floor glue is the same as that of the example 1.
Example 8
The embodiment 8 of the invention provides a PVC floor glue for a non-absorption base layer, which comprises the following raw materials, by weight, 100 parts of water-based emulsion, 2 parts of pyrolysis sealing type curing agent, 4 parts of tackifying emulsion, 1 part of thickener, 0.5 part of defoamer, 0.5 part of bactericide and 1 part of pH value regulator;
the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: 25;
the aqueous emulsion, the thermal decomposition sealing type curing agent, the tackifying emulsion, the thickening agent, the defoaming agent, the bactericide and the pH value regulator are the same as those in the embodiment 1;
the preparation method of the PVC floor glue is the same as that of the example 1.
Example 9
Embodiment 9 of the present invention provides a PVC floor adhesive for a non-absorptive base layer, which comprises, by weight, 90 parts of an aqueous emulsion, 2 parts of a thermal decomposition sealing type curing agent, 10 parts of a tackifying emulsion, 1 part of a thickener, 0.5 part of a defoaming agent, 0.5 part of a bactericide, and 1 part of a pH regulator;
the weight ratio of the tackifying emulsion to the aqueous emulsion is 1: 9;
the aqueous emulsion, the thermal decomposition sealing type curing agent, the tackifying emulsion, the thickening agent, the defoaming agent, the bactericide and the pH value regulator are the same as those in the embodiment 1;
the preparation method of the PVC floor glue is the same as that of the example 1.
Example 10
The embodiment 10 of the invention provides a PVC floor glue for a non-absorption base layer, which is implemented in the same way as the embodiment 1, and is characterized in that the defoaming agent is a silicone defoaming agent, and the silicone defoaming agent is purchased from Xister environmental protection materials science and technology Limited liability company in Fujian province, and has the model of Z-201.
Performance testing
The PVC floor glue for the non-absorption base layer prepared in the embodiments 1 to 10 is used for adhering a PVC floor on the non-absorption base layer, double-sided gluing is carried out, after water is evaporated and the glue film is dried, the glue film is immediately attached, hot pressing is carried out for 3 minutes by using a heating and pressing roller at the temperature of 100 ℃, and after curing is carried out for 48 hours, the peel strength, the shear strength and the drawing strength at the temperature of 90 degrees are tested.
A commercially available one-component water-based adhesive, Hangao K188E, was tested for 90-degree peel strength, shear strength, and pull strength as described above.
Evaluation criteria:
a is a peel strength at 1.90 degrees of 70N/50mm (25 ℃); the 90-degree peel strength is 65N/50mm (25 ℃) or more, and B is less than 70N/50mm (25 ℃); the 90-degree peel strength is 60N/50mm (25 ℃) or more, and C is less than 65N/50mm (25 ℃); the 90-degree peel strength was less than 60N/50mm (25 ℃ C.) and D.
2. The shear strength is more than or equal to 1.35N/mm and is A; the shear strength is more than or equal to 1.15N/mm, and less than 1.35N/mm is B; c represents a shear strength of 0.8N/mm or more and less than 1.15N/mm; d is the shear strength less than 0.8N/mm.
3. The drawing strength is more than or equal to 0.7MPa and is A; the drawing strength is greater than or equal to 0.55MPa and less than 0.7MPa, and is B; the drawing strength is more than or equal to 0.4MPa and less than 0.55MPa, and is C; d is the drawing strength less than 0.4 MPa.
The test results are shown in table 1:
TABLE 1
Figure BDA0002979021460000101
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Where numerical ranges are used in the claims, also included are sub-ranges within them, and variations in these ranges are also to be construed as being covered by the appended claims where possible.

Claims (10)

1. The PVC floor glue for the non-absorption base layer is characterized by comprising, by weight, 70-90 parts of water-based emulsion, 1-5 parts of pyrolysis sealing type curing agent, 5-20 parts of tackifying emulsion, 0.5-3 parts of thickening agent, 0.1-1 part of defoaming agent, 0.2-1.0 part of bactericide and 0-2 parts of pH value regulator.
2. The PVC floor glue for non-absorbent base layer as claimed in claim 1, wherein the aqueous emulsion has a solid content of 30-60 wt%.
3. The PVC floor glue for the non-absorption base layer as claimed in claim 1 or 2, wherein the aqueous emulsion is one or more of aqueous polyurethane emulsion, aqueous polyester emulsion, aqueous acrylic emulsion, acrylic acid modified polyurethane emulsion and polyurethane modified acrylic emulsion.
4. The PVC floor glue for non-absorbent base layer as claimed in claim 1, wherein the tackifying emulsion is one or more of terpene phenol resin emulsion, hydrogenated rosin emulsion, esterified rosin emulsion, polymerized rosin emulsion and rosin acid emulsion.
5. The PVC floor glue for non-absorption base layer as claimed in claim 1, wherein the thickener is one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, alkali swelling acrylic emulsion, polyurethane emulsion thickener.
6. The PVC floor glue for a non-absorption base layer as claimed in claim 1, wherein the defoaming agent is at least one of a silicone defoaming agent, a polyether defoaming agent, a higher alcohol defoaming agent and a polyether modified silicone defoaming agent.
7. The PVC floor glue for non-absorbent substrate according to claim 1, wherein the bactericide is one or more of methylisothiazolinone, methylchloroisothiazolinone, 1, 2-benzisothiazolin-3-one.
8. The PVC floor paste for a non-absorbent substrate according to claim 1, wherein the pH regulator is one of monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, potassium hydroxide, ammonia water, and 2-amino-2-methyl-1-propanol.
9. The PVC floor glue for the non-absorption base layer as claimed in claim 1, wherein the deblocking temperature of the thermal decomposition sealing type curing agent is 100-150 ℃.
10. A method for preparing the PVC floor glue for the non-absorbent base layer according to any one of claims 1 to 9, wherein the method for preparing the PVC floor glue comprises: and (3) uniformly mixing and stirring the water-based emulsion, the tackifying emulsion, the thickening agent, the bactericide and the pH value regulator, adding the defoaming agent, uniformly mixing and stirring, then adding the pyrolysis sealing type curing agent, uniformly mixing and stirring to obtain the PVC floor glue.
CN202110282194.9A 2021-03-16 2021-03-16 PVC floor glue for non-absorption base layer and preparation method thereof Pending CN113845870A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110282194.9A CN113845870A (en) 2021-03-16 2021-03-16 PVC floor glue for non-absorption base layer and preparation method thereof

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Publication Number Publication Date
CN113845870A true CN113845870A (en) 2021-12-28

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Application Number Title Priority Date Filing Date
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