CN113668285A - High-adhesion paper organic silicon release agent and preparation method thereof - Google Patents
High-adhesion paper organic silicon release agent and preparation method thereof Download PDFInfo
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- CN113668285A CN113668285A CN202110788068.0A CN202110788068A CN113668285A CN 113668285 A CN113668285 A CN 113668285A CN 202110788068 A CN202110788068 A CN 202110788068A CN 113668285 A CN113668285 A CN 113668285A
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- release agent
- paper
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- release
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
Abstract
The invention belongs to the technical field of organic silicon release agents, release films and release paper, and particularly relates to a high-adhesion paper organic silicon release agent which is prepared from the following components in parts by weight: 100 parts of branched silicone oil, 0.2 part of inhibitor, 1-5 parts of cross-linking agent and 10-100 parts of platinum catalyst. In addition, the invention also discloses a preparation method of the high-adhesion paper organosilicon release agent, which comprises the following steps: weighing the branched silicone oil, the inhibitor and the cross-linking agent according to the proportion and then uniformly stirring; adding platinum catalyst and stirring. The invention can improve the overall curing speed of the release agent, improve the adhesion of the release agent to paper, has particularly obvious effect on laminating paper, enhances the adhesion of the release agent and a base material, and simultaneously improves the residual adhesion rate of the release agent.
Description
Technical Field
The invention relates to the technical field of organic silicon release agents, release films and release paper, in particular to a high-adhesion paper organic silicon release agent and a preparation method thereof.
Background
The organic silicon release agent mainly comprises polydimethylsiloxane, is coated and cured on paper or a polyester film to form a compact organic silicon surface coating, has the functions of preventing adhesion and protecting the adhesive coating due to the characteristic of low surface energy, and is widely applied to the industries of labels, sanitary products, advertising stickers, food baking, adhesive tapes and the like.
The organic silicon release agent is mainly divided into a photo-curing type and a thermosetting type. The thermosetting type mainly comprises vinyl silicone oil, an inhibitor, a cross-linking agent, an anchoring agent and a catalyst, wherein the components are uniformly mixed and then coated on paper or a polyester film, and the paper or the polyester film is cured through a drying tunnel to prepare release paper or release film.
The conventional organic silicon release agent has poor binding force with the surface of a base material, and is easy to separate from the base material through friction after high temperature and high humidity.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a release agent with high curing speed and high adhesiveness and a preparation method thereof.
In order to achieve the above object, the present invention provides the following solutions: a high-adhesion paper organosilicon release agent is prepared from the following components in parts by weight:
silicone branched Silicone oil 100
Inhibitor 0.2
Crosslinking agent 1-5
10-100ppm of platinum catalyst
Further, the structural formula of the organosilicon branched silicone oil is as follows:
CH2＝CH-(Si-O-Si)a-O-SiCH3R1-O-(Si-O-Si)b-CH＝CH2
wherein R is1is-O- (Si-O-Si)c-CH＝CH2；a/b/c＝20-100；
Further, the inhibitor is one or more of alkynes and alkynols.
Further, the cross-linking agent is hydrogen-containing silicone oil.
Further, the platinum catalyst is a platinum complex.
A preparation method of the high-adhesion organic silicon release agent comprises the following steps: the silicone branched silicone oil, the inhibitor and the cross-linking agent are weighed according to the proportion and then stirred evenly, and the platinum catalyst is added and stirred evenly.
The release agent applied to paper, which is obtained by the invention, adopts the organic silicon branched silicone oil, so that the overall curing speed of the release agent can be improved, the adhesion of the release agent to the paper can be improved, and the effect on laminating paper is particularly obvious. The inhibitor and the hydrogen-containing silicone oil cross-linking agent are compounded for use, so that the curing speed of the release agent can be adjusted, the reaction time of the release agent and the base material can be adjusted, the adhesion between the release agent and the base material is enhanced, and the residual adhesion rate of the release agent is improved.
Detailed Description
The present invention is described in detail below with reference to examples, and the description in this section is only for illustrating and explaining the present invention and is not limited to the present invention.
Example 1
The structural formula of the organic silicon branched silicone oil is as follows:
CH2＝CH-(Si-O-Si)a-O-SiCH3R1-O-(Si-O-Si)b-CH＝CH2
wherein R is1is-O- (Si-O-Si)c-CH＝CH2；a/b/c＝40；
Weighing the following components in parts by weight: 100 parts of organosilicon branched silicone oil, 0.2 part of inhibitor, 4.5 parts of hydrogen-containing silicone oil and 50ppm of platinum catalyst.
Example 2
The structural formula of the organic silicon branched silicone oil is as follows:
CH2＝CH-(Si-O-Si)a-O-SiCH3R1-O-(Si-O-Si)b-CH＝CH2
wherein R is1is-O- (Si-O-Si)c-CH＝CH2；a/b/c＝60；
Weighing the following components in parts by weight: 100 parts of organic silicon branched silicone oil, 0.2 part of inhibitor, 3.0 parts of hydrogen-containing silicone oil and 50ppm of platinum catalyst.
Example 3
The structural formula of the organic silicon branched silicone oil is as follows:
CH2＝CH-(Si-O-Si)a-O-SiCH3R1-O-(Si-O-Si)b-CH＝CH2
wherein R is1is-O- (Si-O-Si)c-CH＝CH2；a/b/c＝80；
Weighing the following components in parts by weight: 100 parts of organosilicon branched silicone oil, 0.2 part of inhibitor, 2.3 parts of hydrogen-containing silicone oil and 50ppm of platinum catalyst.
Laboratory application mode: after the components are uniformly stirred, a solvent-free release agent coating roller is used for coating the release agent on PEK laminating paper, and the PEK laminating paper is cured in a 110C oven for 20 seconds to obtain the organic silicon release paper.
The coating weight test method comprises the following steps: the Hitachi X-ray coating weight tester was used, in gsm.
The method for testing the release force comprises the following steps: a germansa 7475 standard tape was attached to release paper and the sample was rolled back and forth twice with a standard test roller. Pressing a sample by using a standard stainless steel pressing strip, placing the sample in a baking oven at 23 ℃ and 70 ℃ for 20 hours, removing the pressing strip, placing the sample in a room temperature for 1 hour, and testing 180-degree peel force on a tensile testing machine at a speed of 0.3m/min to obtain normal-temperature release force and aging release force in g/inch.
The method for testing the residual adhesion rate comprises the following steps: the day east 31B tape was attached to release paper and teflon film and the sample was rolled back and forth twice with a standard test roller. Pressing a sample by using a standard stainless steel pressing strip, placing the sample in a 70C oven for 20 hours, removing the pressing strip, placing the sample in a room temperature for 1 hour, peeling off a 31B adhesive tape, attaching the tape to a PET film, placing the film in a room temperature for 30 minutes, and testing 180-degree peeling force on a pressure testing machine at 0.3 m/min. The ratio of the two is the residual adhesion, expressed in%.
The adhesion test method comprises: after the coating amount of the sample was measured, the sample was rubbed with a nonwoven fabric by a rubbing machine 30 back and forth, and the coating amount after the rubbing was measured. The ratio of the two is the adhesion, expressed as%.
And aging the release paper in an environment with relative humidity of 60 ℃/90% for 3 days, and testing the adhesiveness according to the method to obtain the adhesiveness after aging.
The test results are shown below:
| example 1 | Example 2 | Example 3 | |
| Coating weight (gsm) | 1.1 | 1.1 | 1.1 |
| Normal temperature release force (g/inch) | 9 | 7 | 6 |
| Aging release force (g/inch) | 15 | 13 | 12 |
| Residual adhesion (%) | 99 | 99 | 99 |
| Adhesion (%) | 95 | 96 | 97 |
| Adhesion after aging (%) | 65 | 68 | 75 |
From the above results, it can be seen that the release papers prepared by using the release agents of examples 1 to 8 all can achieve <10g/inch release force, > 95% residual adhesion, adhesion > 95%, and adhesion > 60% after high temperature and high humidity aging.
Claims (6)
1. The high-adhesion paper organosilicon release agent is characterized by being prepared from the following components in parts by weight: 100 parts of branched silicone oil, 0.2 part of inhibitor, 1-5 parts of cross-linking agent and 10-100 parts of platinum catalyst.
2. The high adhesion paper silicone release agent according to claim 1, characterized in that: the structural formula of the branched silicone oil is as follows:
CH2=CH-(Si-O-Si)a-O-SiCH3R1-O-(Si-O-Si)b-CH=CH2
wherein R1 is-O- (Si-O-Si) c-CH = CH 2; a/b/c = 20-100.
3. The high adhesion paper silicone release agent according to claim 2, characterized in that: the inhibitor is one or more of alkynes and alkynols.
4. The high adhesion paper silicone release agent according to claim 3, characterized in that: the cross-linking agent is hydrogen-containing silicone oil.
5. The high adhesion paper silicone release agent according to claim 4, characterized in that: the platinum catalyst is a platinum complex.
6. A method for preparing the high-adhesion paper organosilicon release agent according to any one of claims 1 to 5, characterized in that: the method comprises the following steps: weighing the branched silicone oil, the inhibitor and the cross-linking agent according to the proportion and then uniformly stirring; adding platinum catalyst and stirring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788068.0A CN113668285A (en) | 2021-07-13 | 2021-07-13 | High-adhesion paper organic silicon release agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110788068.0A CN113668285A (en) | 2021-07-13 | 2021-07-13 | High-adhesion paper organic silicon release agent and preparation method thereof |
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| CN113668285A true CN113668285A (en) | 2021-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908604A (en) * | 2022-05-16 | 2022-08-16 | 江苏至昕新材料有限公司 | Organic silicon release agent for low-release-force PET (polyethylene terephthalate) film and preparation method thereof |
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|---|---|---|---|---|
| CN1281881A (en) * | 1999-07-23 | 2001-01-31 | 陶氏康宁公司 | Silicone demoulding coating composition |
| CN104130705A (en) * | 2014-06-29 | 2014-11-05 | 惠州市永卓科技有限公司 | High residual adhesive rate solvent-type paper isolation agent and preparation method thereof |
| CN107503231A (en) * | 2017-08-24 | 2017-12-22 | 中科院广州化学有限公司南雄材料生产基地 | The vinyl silicone oil of end hydroxyl is as application of the off-type force conditioning agent in mould release is prepared and its mould release and mould release membrance |
| CN111286031A (en) * | 2018-12-10 | 2020-06-16 | 上海万华科聚化工科技发展有限公司 | Branched polysiloxane and preparation method and application thereof |
-
2021
- 2021-07-13 CN CN202110788068.0A patent/CN113668285A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281881A (en) * | 1999-07-23 | 2001-01-31 | 陶氏康宁公司 | Silicone demoulding coating composition |
| CN104130705A (en) * | 2014-06-29 | 2014-11-05 | 惠州市永卓科技有限公司 | High residual adhesive rate solvent-type paper isolation agent and preparation method thereof |
| CN107503231A (en) * | 2017-08-24 | 2017-12-22 | 中科院广州化学有限公司南雄材料生产基地 | The vinyl silicone oil of end hydroxyl is as application of the off-type force conditioning agent in mould release is prepared and its mould release and mould release membrance |
| CN111286031A (en) * | 2018-12-10 | 2020-06-16 | 上海万华科聚化工科技发展有限公司 | Branched polysiloxane and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908604A (en) * | 2022-05-16 | 2022-08-16 | 江苏至昕新材料有限公司 | Organic silicon release agent for low-release-force PET (polyethylene terephthalate) film and preparation method thereof |
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Application publication date: 20211119 |