CN110862791A - Pressure-sensitive adhesive of high-function self-adhesive film for refrigerator door body and preparation method thereof - Google Patents
Pressure-sensitive adhesive of high-function self-adhesive film for refrigerator door body and preparation method thereof Download PDFInfo
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- CN110862791A CN110862791A CN201911195572.9A CN201911195572A CN110862791A CN 110862791 A CN110862791 A CN 110862791A CN 201911195572 A CN201911195572 A CN 201911195572A CN 110862791 A CN110862791 A CN 110862791A
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
-
- 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
- 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
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- 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)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a pressure-sensitive adhesive of a high-function self-adhesive film for a refrigerator door body, which is prepared by reacting the following raw materials in parts by weight: 80-120 parts of SIS, 50-80 parts of SBS, 40-60 parts of natural rubber, 15-30 parts of naphthenic oil, 10-30 parts of castor oil, 30-50 parts of aliphatic mineral oil, 40-50 parts of stearic acid, 40-50 parts of rosin glyceride, 10-20 parts of C5 petroleum resin, 40-60 parts of terpene resin and 1-5 parts of anti-aging agent. The pressure-sensitive adhesive provided by the invention is prepared by reacting stearic acid with rosin glyceride to generate stearic acid rosin glyceride and matching with other components such as tackifier, toughening and modifying castor oil and the like, has excellent water resistance and excellent holding viscosity in low-temperature use, and can meet various requirements required by the use of the pressure-sensitive adhesive in a refrigerator door body. Meanwhile, the invention also correspondingly discloses a preparation method of the pressure-sensitive adhesive of the high-function self-adhesive film for the refrigerator door body.
Description
Technical Field
The invention relates to glue, in particular to a pressure-sensitive adhesive of a high-function self-adhesive film for a refrigerator door body and a preparation method thereof.
Background
Pressure-sensitive adhesives (PSAs) are a branch of adhesive systems, and are viscoelastic bodies having both liquid viscous properties and solid elastic properties. Pressure-sensitive adhesive tape (psatap), also known as "adhesive tape", is a product to which a pressure-sensitive adhesive is previously applied. It features uniform coating, permanent viscosity and adhesion by applying a certain pressure. Pressure-sensitive adhesive products can be divided into single-sided adhesive tapes and double-sided adhesive tapes according to the specific gluing mode: the double-sided adhesive tape mainly plays a role in connection; while single-sided tapes are mainly used for packaging, bundling, securing, surface protection and other applications. The refrigerator production adopts the assembly line operation, and production efficiency requires highly, and station operating time is short, and is very suitable for using pressure sensitive adhesive tape. A typical application of pressure-sensitive adhesive tapes in the production of refrigerators is the temporary fixing of components.
The finished product refrigerator is internally provided with a plurality of appearance components such as drawers and partition boards, the types of materials used by the components are various, different manufacturers are different, the finished product refrigerator mainly comprises plastic parts such as polypropylene (PP), ABS, PS and the like and various metal baking finish plates, and the components are poor in adhesion and large in brittleness and are not easy to attach. In order to prevent the parts from being damaged in the processes of carrying and transporting, a single-sided adhesive tape is used for temporarily fixing the parts in the production of the refrigerator. The application requires that the adhesive tape has good bonding strength (the 180-degree peeling strength of a standard test board for a stainless steel mirror surface is greater than 8N/25mm, the attaching time is 30min) to plastic and metal baking varnish, can be cleanly removed, and can be peeled at a high speed and a low speed without residual adhesive and shadow marks; and has excellent damp and heat resistance and cold and hot cycle impact resistance.
In the current market, pressure-sensitive adhesives for refrigerator fixing tapes are mainly classified into rubber types and acrylic types, wherein the rubber types are mainly used:
the rubber type pressure-sensitive adhesive mainly uses natural rubber as a main raw material, has low glass transition temperature, is very soft and has good compatibility with tackifying resin, so that the prepared pressure-sensitive adhesive has excellent quick viscosity and bonding strength, has good laminating property on various plastic parts with different polarities and metal parts, is particularly suitable for temporary fixing during foaming of high-grade refrigerator parts and inner containers, and can be cleanly removed, stripped at a high and low speed and free from residual adhesive due to high molecular weight of the natural rubber.
However, rubber-type pressure-sensitive adhesives are inferior in aging resistance and weather resistance. The glue can be aged and degraded under the action of light and heat for a long time, so that the glue residue phenomenon can occur; the rubber type pressure sensitive adhesive has good elasticity at room temperature, brownian motion of particles is weakened along with temperature reduction, and the rubber is in a leather shape because of increase of internal viscosity. When the brownian motion of the particles is completely stopped when the temperature is further reduced, the rubber is frozen, namely enters an embrittled glassy region, so that the elasticity of the pressure-sensitive adhesive layer is deteriorated, the brittleness of the pressure-sensitive adhesive layer is increased, and the pressure-sensitive adhesive layer is easy to crack or fall off.
Therefore, there is a need for improvement of the existing rubber-type pressure-sensitive adhesive to improve the usability thereof in low temperature environments.
Disclosure of Invention
The invention aims to solve the problem of poor service performance of the existing rubber pressure-sensitive adhesive in a low-temperature environment, and provides a pressure-sensitive adhesive of a high-function self-adhesive film for a refrigerator door body.
The technical scheme for realizing the first purpose of the invention is as follows:
a pressure-sensitive adhesive of a high-function self-adhesive film for a refrigerator door body is prepared by reacting the following raw materials in parts by weight,
by adopting the scheme, the formula of the pressure-sensitive adhesive of the high-function self-adhesive film for the refrigerator door body is provided, and the mixture of SIS, SBS and natural rubber is specifically adopted as a main polymer base material, so that the low-temperature anti-freezing capacity of the pressure-sensitive adhesive is improved; stearic acid rosin glyceride generated by reaction of stearic acid and rosin glyceride in the formula is matched with tackifier combination of C5 petroleum resin and terpene resin to adjust viscosity of the pressure-sensitive adhesive and improve low-temperature resistance of the pressure-sensitive adhesive, castor oil is used for epoxy toughening, viscosity of the pressure-sensitive adhesive is improved, and plasticizer combination of naphthenic oil and aliphatic mineral oil improves compatibility of various components, so that the final pressure-sensitive adhesive can keep good flexibility at low temperature.
Further, the terpene resin is a mixture of T-100 terpene resin and T-120 terpene resin.
By adopting the scheme, the terpene resin composition is provided, the relative melt viscosity is low, the viscosity of the pressure-sensitive adhesive can be effectively adjusted, and the lasting viscosity of the pressure-sensitive adhesive in a low-temperature environment is improved.
Further, the terpene resin is a mixture of T-100 and T-120 terpene resins in a weight part ratio of 1: 1.
By adopting the scheme, the adjusting effect on the viscosity of the pressure-sensitive adhesive is better, and the existing lasting viscosity of the pressure-sensitive adhesive in a low-temperature environment is improved.
Further, the anti-aging agent is any one of styrenated phenol, an antioxidant 1010 or an antioxidant 264.
By adopting the scheme, the added anti-aging agent plays a role in preventing the plane material deformation of the pressure-sensitive adhesive caused by oxidation, and meanwhile, the addition of the anti-aging agent can also reduce the oxidation aging of each component in the processing process.
Further, the mass part ratio of stearic acid to rosin glyceride is 1: 1.
By adopting the scheme, the stearic acid rosin glyceride generated by the reaction has excellent effect of adjusting the viscosity of the pressure-sensitive adhesive.
The invention also aims to provide a preparation method of the pressure-sensitive adhesive of the high-function self-adhesive film for the refrigerator door body.
The technical scheme for realizing the other purpose of the invention is as follows:
the preparation method of the pressure-sensitive adhesive of the high-function self-adhesive film for the refrigerator door body comprises the following steps,
grinding rosin glyceride with a ratio calculated amount, adding the ground rosin glyceride into a stirring reaction kettle, adding stearic acid with an equivalent amount, heating to 240 ℃, and carrying out heat preservation reaction for 4 hours;
step two, cooling the reaction kettle to 150 ℃, adding naphthenic oil, castor oil, C5 petroleum resin and terpene resin, and introducing N2Protecting, heating to 200 ℃ under stirring condition, and enabling the added materials to be molten;
and step three, continuously adding the SIS, SBS and natural rubber, stirring for 2h, and stopping heating to obtain the high-function self-adhesive film pressure-sensitive adhesive for the refrigerator door body.
By adopting the scheme, the prepared pressure-sensitive adhesive has excellent flexibility and sustained viscosity in a low-temperature environment, and the low-temperature service performance is superior to that of the common rubber pressure-sensitive adhesive in the market.
The invention has the following positive effects:
1. by reasonably adjusting the formula of the pressure-sensitive adhesive, the obtained pressure-sensitive adhesive can meet the use requirement at normal temperature, can keep excellent flexibility and sustained viscosity in a low-temperature environment, and has far better low-temperature use performance than the existing rubber pressure-sensitive adhesive;
2. stearic acid and rosin glyceride react to generate stearic acid rosin glyceride, and the stearic acid rosin glyceride is combined with tackifier C5 petroleum resin and terpene resin with relatively low molecular weight for use, so that tackifier molecules can enter a cross-linked network structure of a block copolymer, and meanwhile, the tackifier combination has good compatibility with a rubber system, and the viscosity of the pressure-sensitive adhesive is adjusted, and simultaneously, the stability of the final pressure-sensitive adhesive is improved, especially the low-temperature stability of the pressure-sensitive adhesive;
3. the castor oil is used as a toughening modification component, so that the viscosity of the pressure-sensitive adhesive is improved, and the stability of a pressure-sensitive adhesive system is improved; the plasticizer combination of naphthenic oil and aliphatic mineral oil is added, so that the capability of the pressure-sensitive adhesive for keeping flexibility under low temperature is improved, and the pressure-sensitive adhesive has excellent low-temperature service performance.
Detailed Description
The raw material sources used in the examples are as follows:
TABLE 1 raw materials Source Table
The other reagents are not indicated by manufacturers, and can be obtained by conventional products on the market.
Example 1:
a pressure-sensitive adhesive of label paper of a high-function self-adhesive film for a refrigerator door body,
is prepared by the following components in percentage by weight:
80kg of SIS, 50kg of SBS, 45kg of natural rubber, 15kg of naphthenic oil, 15kg of castor oil, 35kg of aliphatic mineral oil, 42.5kg of stearic acid, 42.5kg of rosin glyceride, 12kg of C5 petroleum resin, 45kg of terpene resin and 2kg of anti-aging agent.
Wherein the terpene resin is a mixture of T-100 and T-120 terpene resins in a weight part ratio of 1: 1; the antioxidant is any one of styrenated phenol, antioxidant 1010 or antioxidant 264, and in the embodiment, the antioxidant 1010 is selected.
The preparation method comprises the following steps:
grinding the rosin glyceride weighed according to the proportion, adding the ground rosin glyceride into a stirring reaction kettle, adding stearic acid with the same amount, heating to 240 ℃, and carrying out heat preservation reaction for 4 hours;
step two, cooling the reaction kettle to 150 ℃, adding naphthenic oil, castor oil, C5 petroleum resin and terpene resin, and introducing N2Protecting, heating to 200 ℃ under stirring condition, and enabling the added materials to be molten;
and step three, continuously adding the SIS, SBS and natural rubber, stirring for 2h, and stopping heating to obtain the high-function self-adhesive film pressure-sensitive adhesive for the refrigerator door body.
Examples 2 to 6:
examples 2 to 6 each relate to a pressure-sensitive adhesive for a label paper of a highly functional self-adhesive film for a refrigerator door body, and the amounts of the components used in examples 2 to 6 are specifically shown in table 2.
TABLE 2 table of the component ratios in examples 2 to 6
The specific preparation method of examples 2-6 comprises the following steps:
step one, grinding the rosin glyceride weighed according to the proportion in the table 2, adding the ground rosin glyceride into a stirring reaction kettle, adding stearic acid with the same amount, heating to 240 ℃, and carrying out heat preservation reaction for 4 hours;
step two, cooling the reaction kettle to 150 ℃, adding naphthenic oil, castor oil, C5 petroleum resin and terpene resin, and introducing N2Protecting, heating to 200 ℃ under stirring condition, and enabling the added materials to be molten;
and step three, continuously adding the SIS, SBS and natural rubber, stirring for 2h, and stopping heating to obtain the high-function self-adhesive film pressure-sensitive adhesive for the refrigerator door body.
Comparative example 1:
the commercially available rubber type pressure-sensitive adhesive comprises the following raw materials in parts by weight:
comparative example 2:
the commercially available rubber type pressure-sensitive adhesive comprises the following raw materials in parts by weight:
comparative example 3:
a rubber-type pressure-sensitive adhesive, based on example 4, differs from example 4 only in that: the formula does not contain stearic acid.
Comparative example 4:
a rubber-type pressure-sensitive adhesive, based on example 4, differs from example 4 only in that: the formula does not contain rosin glyceride.
Comparative example 5:
a rubber-type pressure-sensitive adhesive, based on example 4, differs from example 4 only in that: the formula does not contain stearic acid and rosin glyceride.
Performance test Using the pressure-sensitive adhesives of examples 1 to 6 and comparative examples 1 to 5 as samples, the following experiments were conducted:
1) coating the sample on a test plate to form a pressure-sensitive adhesive layer, and then determining the water absorption rate according to GB/T1733-93;
2) applying a sample on the surface of the silicon-coated release paper, compounding a layer of PE film to prepare a sample adhesive tape, and respectively testing the initial viscosity, 180-degree peel strength and permanent viscosity of the sample adhesive tape:
A. the initial adhesion test is carried out according to GB/T4852-2002 of initial adhesion test method (ball rolling method) of pressure-sensitive adhesive tape;
B. the 180-degree peel strength test is carried out according to GB/T2792-assistant 2014 of adhesive tape peel strength test method, and the peel strength is respectively tested under the conditions of-5 ℃, 25 ℃ and 70 ℃;
C. the permanent adhesion test was conducted at-5 ℃ and 25 ℃ and 70 ℃ for 1 week, respectively, in accordance with GB/T4851-1998 "method for permanent adhesion test of pressure-sensitive adhesive tape".
The results of the experiments are reported in tables 3-4,
TABLE 3 test results of examples 1-6
TABLE 4 test results of comparative examples 1 to 5
By comparing the experimental data in tables 3 and 4, it can be seen that: compared with the prior art, the pressure-sensitive adhesive disclosed by the invention has lower water absorption rate, namely better water resistance. Meanwhile, experimental data show that the pressure-sensitive adhesive has excellent peel strength and holding viscosity, particularly the peel strength under the low-temperature condition is far superior to that of the comparative example, the pressure-sensitive adhesive has excellent low-temperature service performance, and can meet various performances of the pressure-sensitive adhesive used as a self-adhesive film of a refrigerator door body. In addition, the experimental data show that the stearic acid and the rosin glyceride are blended to synergistically promote the peel strength of the pressure-sensitive adhesive, and particularly the synergistic promotion effect on the peel strength in a low-temperature environment is better; furthermore, the experimental data of comparative examples 4 to 6 show that the effect of improving the peel strength of the pressure-sensitive adhesive is most remarkable when the weight ratio of stearic acid to rosin glycerin ester is 1: 1.
It is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the inventive process concepts and solutions, or its application to other applications without modification.
Claims (6)
1. The utility model provides a pressure-sensitive adhesive that is used for high function self-adhesive film of refrigerator door body which characterized in that: is prepared by the following raw materials in parts by weight through reaction,
80-120 parts of SIS
50-80 parts of SBS
40-60 parts of natural rubber
15-30 parts of naphthenic oil
10-30 parts of castor oil
30-50 parts of aliphatic mineral oil
40-50 parts of stearic acid
40-50 parts of rosin glyceride
10-20 parts of C5 petroleum resin
40-60 parts of terpene resin
1-5 parts of an anti-aging agent.
2. The pressure-sensitive adhesive for the high-function self-adhesive film of the refrigerator door according to claim 1, characterized in that: the terpene resin is a mixture of T-100 terpene resin and T-120 terpene resin.
3. The pressure-sensitive adhesive for the high-function self-adhesive film of the refrigerator door according to claim 2, characterized in that: the terpene resin is a mixture of T-100 and T-120 terpene resins in a weight ratio of 1: 1.
4. The pressure-sensitive adhesive for the high-function self-adhesive film of the refrigerator door according to claim 1, characterized in that: the anti-aging agent is any one of styrenated phenol, an antioxidant 1010 or an antioxidant 264.
5. The pressure-sensitive adhesive for the high-function self-adhesive film of the refrigerator door according to claim 1, characterized in that: the mass part ratio of stearic acid to rosin glyceride is 1: 1.
6. The preparation method of the pressure-sensitive adhesive of the high-functional self-adhesive film for the refrigerator door body according to claim 1 is characterized in that: the method comprises the following steps:
grinding rosin glyceride with a ratio calculated amount, adding the ground rosin glyceride into a stirring reaction kettle, adding stearic acid with an equivalent amount, heating to 240 ℃, and carrying out heat preservation reaction for 4 hours;
step two, cooling the reaction kettle to 150 ℃, adding naphthenic oil, castor oil, C5 petroleum resin and terpene resin, and introducing N2Protecting, heating to 200 ℃ under stirring condition, and enabling the added materials to be molten;
and step three, continuously adding the SIS, SBS and natural rubber, stirring for 2h, and stopping heating to obtain the high-function self-adhesive film pressure-sensitive adhesive for the refrigerator door body.
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| CN201911195572.9A CN110862791A (en) | 2019-11-29 | 2019-11-29 | Pressure-sensitive adhesive of high-function self-adhesive film for refrigerator door body and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978896A (en) * | 2020-07-16 | 2020-11-24 | 嘉好(太仓)新材料股份有限公司 | Left and right waist tape structural adhesive capable of meeting online production conditions and preparation method thereof |
| CN112521884A (en) * | 2020-12-02 | 2021-03-19 | 浙江金科胶粘制品有限公司 | Double-sided film and preparation method thereof |
| CN113004841A (en) * | 2021-04-16 | 2021-06-22 | 江苏欧西盾科技有限公司 | Special hot-melt pressure-sensitive adhesive for non-asphalt-based pre-laid waterproof coiled material and preparation method thereof |
| CN115011270A (en) * | 2022-06-30 | 2022-09-06 | 中山市皇冠胶粘制品有限公司 | Preparation method of high-cohesion rubber type pressure-sensitive adhesive and double-sided adhesive tape |
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| CN102363717A (en) * | 2011-08-26 | 2012-02-29 | 江苏达胜热缩材料有限公司 | Anticorrosive pressure sensitive adhesive tape and preparation method thereof |
| US20180282588A1 (en) * | 2017-04-03 | 2018-10-04 | Eastman Chemical Company | Modified resins and uses thereof |
| CN108856712A (en) * | 2018-03-27 | 2018-11-23 | 浙江易亲工业科技有限公司 | A kind of MIM technique feeding binder and its application |
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Patent Citations (3)
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| CN102363717A (en) * | 2011-08-26 | 2012-02-29 | 江苏达胜热缩材料有限公司 | Anticorrosive pressure sensitive adhesive tape and preparation method thereof |
| US20180282588A1 (en) * | 2017-04-03 | 2018-10-04 | Eastman Chemical Company | Modified resins and uses thereof |
| CN108856712A (en) * | 2018-03-27 | 2018-11-23 | 浙江易亲工业科技有限公司 | A kind of MIM technique feeding binder and its application |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978896A (en) * | 2020-07-16 | 2020-11-24 | 嘉好(太仓)新材料股份有限公司 | Left and right waist tape structural adhesive capable of meeting online production conditions and preparation method thereof |
| CN112521884A (en) * | 2020-12-02 | 2021-03-19 | 浙江金科胶粘制品有限公司 | Double-sided film and preparation method thereof |
| CN113004841A (en) * | 2021-04-16 | 2021-06-22 | 江苏欧西盾科技有限公司 | Special hot-melt pressure-sensitive adhesive for non-asphalt-based pre-laid waterproof coiled material and preparation method thereof |
| CN115011270A (en) * | 2022-06-30 | 2022-09-06 | 中山市皇冠胶粘制品有限公司 | Preparation method of high-cohesion rubber type pressure-sensitive adhesive and double-sided adhesive tape |
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Application publication date: 20200306 |