阅读说明：本技术 一种滑爽剂改性有机硅脱模剂及其制备方法 (Slip agent modified organic silicon release agent and preparation method thereof ) 是由 刘倩 童飞 于 2021-09-09 设计创作，主要内容包括：本发明涉及脱模剂技术领域,具体涉及一种滑爽剂改性有机硅脱模剂及其制备方法：包含有20-30重量份的甲基硅油、2-10重量份的甲基苯基硅油、3-10重量份的硅烷偶联剂、2-10重量份的硅藻土、3-5重量份的云母粉、1-3重量份的催化剂、6-9重量份的改性聚硅氧烷分散体、1-5重量份的催化剂和6-8重量份的辅助剂；本发明以改性聚硅氧烷分散体为材料,使得制备的脱模剂,可成膜,可与水无限稀释直接喷涂于物体表面,与各类阴离子,阳离子,非离子材料相容性好,提升涂层光泽以及舒适的自然手感,降低摩擦系数,提供优异的耐磨抗划痕效果,赋予涂层超级滑爽效。(The invention relates to the technical field of release agents, in particular to a slip agent modified organic silicon release agent and a preparation method thereof, wherein the preparation method comprises the following steps: comprises 20-30 parts by weight of methyl silicone oil, 2-10 parts by weight of methyl phenyl silicone oil, 3-10 parts by weight of silane coupling agent, 2-10 parts by weight of diatomite, 3-5 parts by weight of mica powder, 1-3 parts by weight of catalyst, 6-9 parts by weight of modified polysiloxane dispersoid, 1-5 parts by weight of catalyst and 6-8 parts by weight of auxiliary agent; the modified polysiloxane dispersoid is used as a material, so that the prepared release agent can be formed into a film, can be infinitely diluted with water and directly sprayed on the surface of an object, has good compatibility with various anionic, cationic and nonionic materials, improves the gloss of a coating, has comfortable natural hand feeling, reduces the friction coefficient, provides excellent wear-resistant and scratch-resistant effects, and endows the coating with super smooth effect.)

1. The slip agent modified organic silicon release agent is characterized by comprising 20-30 parts by weight of methyl silicone oil, 2-10 parts by weight of methyl phenyl silicone oil, 3-10 parts by weight of silane coupling agent, 2-10 parts by weight of diatomite, 3-5 parts by weight of mica powder, 1-3 parts by weight of catalyst, 6-9 parts by weight of modified polysiloxane dispersoid, 1-5 parts by weight of catalyst and 6-8 parts by weight of auxiliary agent.

2. The slip agent modified silicone release agent of claim 1 wherein the adjuvants comprise: 1-3 parts of solvent, 2-3 parts of propellant, 0.3-0.8 part of wetting agent, 0.2-0.5 part of preservative and 0.1-0.15 part of colorant.

3. The slip agent-modified silicone release agent according to claim 1, wherein the silane coupling agent is one or more of a sulfur-containing silane, an aminosilane, a vinyl silane, an epoxy silane, and a methacryloxy silane.

4. The slip agent modified silicone release agent of claim 1 wherein the catalyst is methyl benzene sulfonic acid.

5. A method for preparing a slip agent modified silicone release agent, characterized in that a slip agent modified silicone release agent according to any one of claims 1 to 4 is used, comprising the steps of:

s1, preparing a modified polysiloxane dispersion;

s2, preparing an auxiliary agent;

s3, preparing the release agent.

6. The method for preparing the slip agent modified silicone release agent according to claim 5, wherein in the step S1, a modified polysiloxane dispersion is prepared, comprising the following steps:

s101, mixing isophorone diisocyanate, a catalyst A, a stabilizer and a polymerization inhibitor with a sulfide monomer, and heating to 52-58 ℃ for reaction under the condition of introducing inert gas;

s102, adding a catalyst B and dimethyldichlorosilane until the-NCO value is 8-16%, and heating to 85-88 ℃;

s103, reacting for 3-4 hours until the-NCO value is 0-0.1%, adding an end-capping reagent, and reacting for 0.6-0.9 hour at 80-90 ℃;

s104, adding water, stirring, and separating by using a separator to obtain the modified polysiloxane.

7. The method for preparing the slip agent modified organosilicon release agent according to claim 6, wherein in operation S101, the catalyst A is one or more of organosilicon, organotin and organocobalt.

8. The method for preparing the slip agent modified organic silicon release agent according to claim 6, wherein in operation S102, the catalyst B is one or more of organic tin, organic bismuth, organic zinc and organic amine.

9. The method for preparing the slip agent modified silicone release agent according to claim 5, wherein in the step S2, the preparation of the auxiliary agent comprises the following steps:

s201, cleaning the interior of a stirring device by using distilled water, wherein the interior of the stirring device is free of impurities, and drying the interior of the stirring device for later use after cleaning;

s202, adding the solvent, the propellant, the wetting agent, the preservative and the colorant into a stirring device for stirring at the speed of 30-50r/S for 0.5-1 h;

s203, after stirring, using a heater to raise the temperature to 60-70 ℃;

s204, after the temperature is increased, the speed is increased to 450 and 600r/S for stirring, and meanwhile, an ultrasonic vibrator is used for vibrating, and the auxiliary agent is obtained after the reaction is carried out for 3-4 h.

10. The method for preparing the slip agent modified silicone release agent according to claim 5, wherein in the step S3, the step of preparing the release agent comprises the following steps:

adding methyl silicone oil, methyl phenyl silicone oil, a silane coupling agent, diatomite, mica powder, a catalyst, a modified polysiloxane dispersion, the catalyst and an auxiliary agent into a stirring device for stirring at the speed of 450-600r/s, and stirring for 3 hours to obtain the organic silicon release agent.

Technical Field

The invention relates to the technical field of release agents, and particularly relates to a slip agent modified organic silicon release agent and a preparation method thereof.

Background

The mold release agent (molddischargingagent) is a functional substance between the mold and the finished product, has heat and stress resistance, and is not easy to decompose or wear.

According to the chemical components of the release agent, the release agent can be divided into three types of inorganic substances, organic substances and high polymers. The release agent is chemically resistant and does not dissolve when in contact with the chemical components of different resins, particularly styrene and amines. The release agent adheres to the mold without transferring to the part being processed, and does not interfere with painting or other secondary processing operations. The release agent acts to separate the cured composite article from the mold only smoothly, resulting in a smooth, flat article and a substance that ensures repeated use of the mold. The amount of release agent used is also greatly increased due to the rapid development of injection molding, extrusion, calendering, molding, lamination and other processes.

When the existing release agent is used, only the release can be carried out, and the function is single, so that the performance of the prepared release agent is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a slip agent modified organic silicon release agent and a preparation method thereof, the invention takes modified polysiloxane dispersoid as a material, so that the prepared release agent can be formed into a film, can be infinitely diluted with water and directly sprayed on the surface of an object, has good compatibility with various anions, cations and nonionic materials, improves the gloss and comfortable natural hand feeling of a coating, reduces the friction coefficient, provides excellent wear-resistant and scratch-resistant effects, and endows the coating with super slip effect.

In order to achieve the purpose, the invention provides the following technical scheme:

a slip agent modified organic silicon release agent comprises 20-30 parts by weight of methyl silicone oil, 2-10 parts by weight of methyl phenyl silicone oil, 3-10 parts by weight of silane coupling agent, 2-10 parts by weight of diatomite, 3-5 parts by weight of mica powder, 1-3 parts by weight of catalyst, 6-9 parts by weight of modified polysiloxane dispersion, 1-5 parts by weight of catalyst and 6-8 parts by weight of auxiliary agent.

By adopting the technical scheme: the modified polysiloxane dispersoid is used as a material, so that the prepared release agent can be formed into a film, can be infinitely diluted with water and directly sprayed on the surface of an object, has good compatibility with various anions, cations and nonionic materials, improves the luster and comfortable natural hand feeling of a coating, reduces the friction coefficient, provides excellent wear-resistant and scratch-resistant effects, and endows the coating with super smooth effect.

The invention is further configured to: the auxiliary agent comprises: 1-3 parts of solvent, 2-3 parts of propellant, 0.3-0.8 part of wetting agent, 0.2-0.5 part of preservative and 0.1-0.15 part of colorant.

By adopting the technical scheme: the solvent makes the prepared release agent be in a solution state, the propellant is a spraying power source of the aerosol and is a solvent of the release agent, the wetting agent is used for keeping the release agent moist, the preservative prevents the release agent from being corroded, and the colorant changes the solution into a milky liquid.

The invention is further configured to: the silane coupling agent is one or more of sulfur-containing silane, amino silane, vinyl silane, epoxy silane and methacryloxy silane.

By adopting the technical scheme: can be subjected to surface treatment, improves the compatibility of inorganic filler, and can improve the performances of bonding strength, water resistance, weather resistance and the like.

The invention is further configured to: the catalyst is methyl benzene sulfonic acid.

By adopting the technical scheme: in the catalytic reaction, the catalyst is convenient to remove.

A preparation method of a slip agent modified organic silicon release agent comprises the following steps:

s1, preparing a modified polysiloxane dispersion;

s2, preparing an auxiliary agent;

s3, preparing the release agent.

By adopting the technical scheme: the prepared release agent has ideal effect.

The invention is further configured to: in the step S1, a modified polysiloxane dispersion is prepared, including the steps of:

s101, mixing isophorone diisocyanate, a catalyst A, a stabilizer and a polymerization inhibitor with a sulfide monomer, and heating to 52-58 ℃ for reaction under the condition of introducing inert gas;

s102, adding a catalyst B and dimethyldichlorosilane until the-NCO value is 8-16%, and heating to 85-88 ℃;

s103, reacting for 3-4 hours until the-NCO value is 0-0.1%, adding an end-capping reagent, and reacting for 0.6-0.9 hour at 80-90 ℃;

s104, adding water, stirring, and separating by using a separator to obtain the modified polysiloxane.

By adopting the technical scheme: the modified polysiloxane dispersion prepared was very pure and was used as the main material in the preparation of release agents.

The invention is further configured to: in operation S101, the catalyst a is one or more of organic silicon, organic tin, and organic cobalt.

By adopting the technical scheme: the catalyst A is granular after reaction, and the prepared modified polysiloxane has no impurities.

The invention is further configured to: in operation S102, the catalyst B is one or more of organic tin, organic bismuth, organic zinc, and organic amine.

By adopting the technical scheme: the catalyst B is granular after reaction, and the prepared modified polysiloxane has no impurities.

The invention is further configured to: in the step S101, a method for preparing a nanocomposite substrate includes:

in the step S2, an adjuvant is prepared, including the steps of:

s201, cleaning the interior of a stirring device by using distilled water, wherein the interior of the stirring device is free of impurities, and drying the interior of the stirring device for later use after cleaning;

s202, adding the solvent, the propellant, the wetting agent, the preservative and the colorant into a stirring device for stirring at the speed of 30-50r/S for 0.5-1 h;

s203, after stirring, using a heater to raise the temperature to 60-70 ℃;

s204, after the temperature is increased, the speed is increased to 450 and 600r/S for stirring, and meanwhile, an ultrasonic vibrator is used for vibrating, and the auxiliary agent is obtained after the reaction is carried out for 3-4 h.

By adopting the technical scheme: the adjuvant is prepared and the release agent is brought into a solution state when the auxiliary is used.

The invention is further configured to: in the step S3, a mold release agent is prepared, including the steps of:

adding methyl silicone oil, methyl phenyl silicone oil, a silane coupling agent, diatomite, mica powder, a catalyst, a modified polysiloxane dispersion, the catalyst and an auxiliary agent into a stirring device for stirring at the speed of 450-600r/s, and stirring for 3 hours to obtain the organic silicon release agent.

By adopting the technical scheme, the film can be obtained, the film can be infinitely diluted with water and directly sprayed on the surface of an object, the compatibility with various anions, cations and non-ionic materials is good, the gloss and comfortable natural hand feeling of the coating are improved, the friction coefficient is reduced, the excellent wear-resistant and scratch-resistant effect is provided, and the coating is endowed with the release agent with the super-smooth effect.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

the modified polysiloxane dispersoid is used as a material, so that the prepared release agent can be formed into a film, can be infinitely diluted with water and directly sprayed on the surface of an object, has good compatibility with various anionic, cationic and nonionic materials, improves the gloss of a coating and comfortable natural hand feeling, reduces the friction coefficient, provides excellent wear-resistant and scratch-resistant effects, and endows the coating with super smooth effect.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Example 1

A slip agent modified organic silicon release agent comprises 20 parts by weight of methyl silicone oil, 2 parts by weight of methyl phenyl silicone oil, 3 parts by weight of silane coupling agent, 2 parts by weight of diatomite, 3 parts by weight of mica powder, 1 part by weight of catalyst, 6 parts by weight of modified polysiloxane dispersoid, 1 part by weight of catalyst and 6 parts by weight of auxiliary agent, wherein the auxiliary agent comprises: 1-3 parts of solvent, 2-3 parts of propellant, 0.3-0.8 part of wetting agent, 0.2-0.5 part of preservative and 0.1-0.15 part of coloring agent, wherein the silane coupling agent is one or more of sulfur-containing silane, aminosilane, vinyl silane, epoxy silane and methacryloxy silane, and the catalyst is methyl benzenesulfonic acid.

A preparation method of a slip agent modified organic silicon release agent comprises the following steps:

step one, preparing a modified polysiloxane dispersion, comprising the following steps:

101) mixing isophorone diisocyanate, a catalyst A, a stabilizer, a polymerization inhibitor and a sulfide monomer, and heating to 52-58 ℃ to react under the condition of introducing inert gas, wherein the catalyst A is one or more of organic silicon, organic tin and organic cobalt;

102) adding a catalyst B and dimethyldichlorosilane until the-NCO value is 8-16%, heating to 85-88 ℃, wherein the catalyst B is one or more of organic tin, organic bismuth, organic zinc and organic amine;

103) reacting for 3-4 hours until the-NCO value is 0-0.1%, adding an end-capping reagent, and reacting for 0.6-0.9 hour at 80-90 ℃;

104) adding water, stirring, and separating by using a separator to obtain the modified polysiloxane.

Step two, preparing the auxiliary agent.

The preparation of the adjuvant comprises the following steps:

201) cleaning the interior of the stirring device by using distilled water, wherein the interior of the stirring device has no impurities, and drying the interior of the stirring device after cleaning for later use;

202) adding the solvent, the propellant, the wetting agent, the preservative and the colorant into a stirring device for stirring at the speed of 30-50r/s for 0.5-1 h;

203) after stirring, using a heater to raise the temperature to 60-70 ℃;

204) after the temperature is raised, the speed is raised to 450-

Step three, preparing the release agent.

Preparing a release agent, comprising the following steps:

adding methyl silicone oil, methyl phenyl silicone oil, a silane coupling agent, diatomite, mica powder, a catalyst, a modified polysiloxane dispersion, the catalyst and an auxiliary agent into a stirring device for stirring at the speed of 450-600r/s, and stirring for 3 hours to obtain the organic silicon release agent.

Example 2

The slip agent modified organic silicon release agent and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: 15 parts by weight of methyl silicone oil, 6.5 parts by weight of methylphenyl silicone oil, 7 parts by weight of silane coupling agent, 6.5 parts by weight of diatomaceous earth, 4 parts by weight of mica powder, 2 parts by weight of catalyst, 7.5 parts by weight of modified polysiloxane dispersion, 3.5 parts by weight of catalyst and 7 parts by weight of adjuvant.

Example 3

The slip agent modified organic silicon release agent and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: 30 parts by weight of methyl silicone oil, 10 parts by weight of methylphenyl silicone oil, 10 parts by weight of silane coupling agent, 10 parts by weight of diatomaceous earth, 5 parts by weight of mica powder, 3 parts by weight of catalyst, 9 parts by weight of modified polysiloxane dispersion, 5 parts by weight of catalyst and 8 parts by weight of adjuvant

Comparative example 1

The slip agent modified organic silicon release agent and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: no adjuvant was added.

Comparative example 2

The slip agent modified organic silicon release agent and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: no catalyst was added.

Comparative example 3

The slip agent modified organic silicon release agent and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: no modified polysiloxane dispersion was added.

Performance testing

Taking the slip agent modified organic silicon release agent prepared in the examples 1-3 and the comparative examples 1-3, and detecting the related performance of the prepared toothbrush with the high-efficiency Bass tooth brushing method, wherein the detection method comprises the following steps:

respectively detecting the compatibility of the nonionic materials of the organic silicon release agents according to detection standards GB/T5560-2003, respectively detecting the friction coefficient performance of the organic silicon release agents according to detection standards GB1006, respectively detecting the wear resistance and scratch resistance of the organic silicon release agents according to detection standards GB/T9279-2007, and recording the obtained test results in Table 1;

TABLE 1 detection table for silicone release agent

By analyzing the relevant data in the table, the modified polysiloxane dispersion of the slip agent modified organic silicon release agent prepared by the invention is used as a material, so that the prepared release agent can be formed into a film, can be infinitely diluted with water and directly sprayed on the surface of an object, has good compatibility with various anions, cations and nonionic materials, improves the gloss and comfortable natural hand feeling of a coating, reduces the friction coefficient, provides excellent wear-resistant and scratch-resistant effects, and endows the coating with super slip effect.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.