CN112387923A - Heat-resistant release agent for brake shoe manufacturing and preparation method thereof - Google Patents
Heat-resistant release agent for brake shoe manufacturing and preparation method thereof Download PDFInfo
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- CN112387923A CN112387923A CN202011134623.XA CN202011134623A CN112387923A CN 112387923 A CN112387923 A CN 112387923A CN 202011134623 A CN202011134623 A CN 202011134623A CN 112387923 A CN112387923 A CN 112387923A
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- reaction kettle
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- heat
- anionic surfactant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
The invention discloses a heat-resistant release agent for manufacturing brake shoes, which comprises the following components in parts by weight: 10-12 parts of epoxidized soybean oil; 5-7 parts of triolein; 5-7 parts of stearic acid; 4-6 parts of paraffin; 13-15 parts of seaweed extract; 10-12 parts of an anionic surfactant; 3-5 parts of fatty glyceride; 40-45 parts of soapy water; according to the invention, epoxy soybean oil, triolein, stearic acid, paraffin, seaweed extract, anionic surfactant and fatty glyceride are uniformly mixed into soap water through a scientific and reasonable ratio to prepare the heat-resistant release agent, the release agent has high heat resistance, and the release agent is prevented from losing efficacy under a high-temperature condition in the process of die casting of the brake shoe, so that the release agent is ensured to still have good release performance under the action of high temperature, and the brake shoe is convenient to release.
Description
Technical Field
The invention relates to the technical field of release agents, in particular to a heat-resistant release agent for brake shoe manufacturing and a preparation method thereof.
Background
The release agent is a functional substance between the mold and the finished product; the release agent has chemical resistance and is not dissolved when contacting with chemical components (particularly styrene and amine) of different resins; the release agent also has heat resistance and stress resistance, and is not easy to decompose or wear; the release agent adheres to the mold without transferring to the article being processed, without interfering with painting or other secondary processing operations; 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.
The release agent is an interface coating applied to the surfaces of two objects which are easily adhered to each other, and can make the surfaces of the objects easily separated, smooth and clean; the release agent is used in various mould pressing operations of glass fiber reinforced plastics, metal die casting, polyurethane foam and elastomer, injection molding thermoplastic plastics, vacuum foaming sheets, extrusion profiles and the like; when a press mold is used for manufacturing brake shoes, a mold release agent is applied to the inner wall of a mold in order to prevent the brake shoe surface from adhering to the inner wall of the mold.
The temperature is higher during the die-casting molding of the brake shoe, but the high-temperature resistance of the existing release agent is poorer, and the existing release agent easily loses activity under the action of high temperature to influence the release of the brake shoe, thereby reducing the processing efficiency of the brake shoe.
Disclosure of Invention
The invention aims to provide a heat-resistant release agent for manufacturing brake shoes and a preparation method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a heat-resistant release agent for manufacturing brake shoes comprises the following components in parts by weight:
10-12 parts of epoxidized soybean oil;
5-7 parts of triolein;
5-7 parts of stearic acid;
4-6 parts of paraffin;
13-15 parts of seaweed extract;
10-12 parts of an anionic surfactant;
3-5 parts of fatty glyceride;
40-45 parts of soapy water.
Wherein the seaweed extract is extracted from Sargassum pallidum of Sargassaceae.
Wherein the anionic surfactant is one or a mixture of two of diethyl sulfate, dimethyl sulfate, diethanolamine and triethanolamine.
Wherein, the soapy water is formed by uniformly mixing soap and purified water, and the weight ratio of the soap to the purified water is as follows: 1:15.
A preparation method of a heat-resistant release agent for manufacturing brake shoes comprises the following steps:
s1, respectively weighing epoxidized soybean oil, triolein, stearic acid and fatty glyceride by an electronic scale according to the weight, sequentially adding the weighed epoxidized soybean oil, triolein, stearic acid and fatty glyceride into a reaction kettle, adjusting the temperature of the reaction kettle to 75-85 ℃, stirring for 10-15 minutes by the reaction kettle, and uniformly mixing the epoxidized soybean oil, triolein, stearic acid and fatty glyceride together;
s2, respectively weighing paraffin and seaweed extract by an electronic scale according to the weight, then sequentially adding the weighed paraffin and seaweed extract into a reaction kettle, and stirring for 10-15 minutes through the reaction kettle at 75-85 ℃ so that the paraffin and seaweed extract are uniformly mixed into the solution in the reaction kettle;
s3, weighing the anionic surfactant by an electronic scale according to the weight, adding the weighed anionic surfactant into a reaction kettle, and stirring for 8-10 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the anionic surfactant into the solution in the reaction kettle;
s4, weighing soap water by an electronic scale according to the weight, adding the weighed soap water into a reaction kettle, adjusting the temperature of the reaction kettle to 85-90 ℃, stirring for 15-20 minutes by the reaction kettle, uniformly mixing the soap water into the solution inside the reaction kettle, adjusting the temperature of the reaction kettle to a normal temperature state, continuously using the reaction kettle for stirring, taking out the mixture inside the reaction kettle when the temperature inside the reaction kettle is reduced to the room temperature, and performing sterilization treatment, thereby preparing the heat-resistant release agent.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the heat-resistant release agent is prepared by uniformly mixing epoxidized soybean oil, triolein, stearic acid, paraffin, a seaweed extract, an anionic surfactant and fatty glyceride into soap water according to a scientific and reasonable ratio, and the preparation method is simple; the epoxy soybean oil is used for replacing engine oil, so that pollution is reduced, the thermal stability of the release agent is improved, and the mechanical strength and the weather resistance of the release agent are improved; the activity of the release agent can be improved through the seaweed extract and the soapy water, the lubricating effect of the release agent is improved, and the release of the brake shoe formed by die casting is facilitated; meanwhile, the release agent has higher heat resistance, and is prevented from losing efficacy under the high-temperature condition in the process of die casting of the brake shoe, so that the release agent is ensured to still have good release performance under the high-temperature action, and the brake shoe is convenient to release.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the 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.
Embodiment 1, the present invention provides a technical solution: a heat-resistant release agent for manufacturing brake shoes comprises the following components in parts by weight:
11 parts of epoxidized soybean oil;
6 parts of triolein;
6 parts of stearic acid;
4 parts of paraffin;
13 parts of seaweed extract;
12 parts of an anionic surfactant;
4 parts of fatty glyceride;
43 parts of soapy water.
Wherein, the epoxy soybean oil is used for replacing engine oil, thereby not only reducing pollution, but also improving the thermal stability of the release agent and simultaneously improving the mechanical strength and the weather resistance of the release agent.
The glycerol trioleate has a high lubricating effect, and the lubricating performance of the release agent is improved by adding the glycerol trioleate into the release agent.
Among them, stearic acid is mainly used as a release agent, a stabilizer, and a surfactant, and the addition of stearic acid to the release agent can improve the stability of the release agent and improve the activity of the release agent.
The paraffin can be prepared into detergents, emulsifiers, dispersants, plasticizers, lubricating grease and the like, and the paraffin is added into the release agent, so that the synthesis of the release agent is facilitated, and the lubricating performance of the release agent is improved.
Wherein the seaweed extractive solution is extracted from Sargassum pallidum of Sargassaceae, and the addition of seaweed extractive solution in the mold release agent has thickening effect.
The surface activity of the release agent is improved by the anionic surfactant which is one or a mixture of two of diethyl sulfate, dimethyl sulfate, diethanolamine and triethanolamine.
Wherein, the soapy water is formed by uniformly mixing soap and purified water, and the weight ratio of the soap to the purified water is as follows: 1: 15; the activity of the release agent can be improved through soapy water, the lubricating effect of the release agent is improved, and the brake shoe formed by die casting is convenient to release.
A preparation method of a heat-resistant release agent for manufacturing brake shoes comprises the following steps:
s1, respectively weighing epoxidized soybean oil, triolein, stearic acid and fatty glyceride by an electronic scale according to the weight, sequentially adding the weighed epoxidized soybean oil, triolein, stearic acid and fatty glyceride into a reaction kettle, adjusting the temperature of the reaction kettle to 75-85 ℃, stirring for 10-15 minutes by the reaction kettle, and uniformly mixing the epoxidized soybean oil, triolein, stearic acid and fatty glyceride together;
s2, respectively weighing paraffin and seaweed extract by an electronic scale according to the weight, then sequentially adding the weighed paraffin and seaweed extract into a reaction kettle, and stirring for 10-15 minutes through the reaction kettle at 75-85 ℃ so that the paraffin and seaweed extract are uniformly mixed into the solution in the reaction kettle;
s3, weighing the anionic surfactant by an electronic scale according to the weight, adding the weighed anionic surfactant into a reaction kettle, and stirring for 8-10 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the anionic surfactant into the solution in the reaction kettle;
s4, weighing soap water by an electronic scale according to the weight, adding the weighed soap water into a reaction kettle, adjusting the temperature of the reaction kettle to 85-90 ℃, stirring for 15-20 minutes by the reaction kettle, uniformly mixing the soap water into the solution inside the reaction kettle, adjusting the temperature of the reaction kettle to a normal temperature state, continuously using the reaction kettle for stirring, taking out the mixture inside the reaction kettle when the temperature inside the reaction kettle is reduced to the room temperature, and performing sterilization treatment, thereby preparing the heat-resistant release agent.
Embodiment 2, the present invention provides a technical solution: a heat-resistant release agent for manufacturing brake shoes comprises the following components in parts by weight:
11 parts of epoxidized soybean oil;
6 parts of triolein;
6 parts of stearic acid;
4 parts of paraffin;
14 parts of seaweed extract;
12 parts of an anionic surfactant;
4 parts of fatty glyceride;
43 parts of soapy water.
A preparation method of a heat-resistant release agent for manufacturing brake shoes comprises the following steps:
s1, respectively weighing epoxidized soybean oil, triolein, stearic acid and fatty glyceride by an electronic scale according to the weight, sequentially adding the weighed epoxidized soybean oil, triolein, stearic acid and fatty glyceride into a reaction kettle, adjusting the temperature of the reaction kettle to 75-85 ℃, stirring for 10-15 minutes by the reaction kettle, and uniformly mixing the epoxidized soybean oil, triolein, stearic acid and fatty glyceride together;
s2, respectively weighing paraffin and seaweed extract by an electronic scale according to the weight, then sequentially adding the weighed paraffin and seaweed extract into a reaction kettle, and stirring for 10-15 minutes through the reaction kettle at 75-85 ℃ so that the paraffin and seaweed extract are uniformly mixed into the solution in the reaction kettle;
s3, weighing the anionic surfactant by an electronic scale according to the weight, adding the weighed anionic surfactant into a reaction kettle, and stirring for 8-10 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the anionic surfactant into the solution in the reaction kettle;
s4, weighing soap water by an electronic scale according to the weight, adding the weighed soap water into a reaction kettle, adjusting the temperature of the reaction kettle to 85-90 ℃, stirring for 15-20 minutes by the reaction kettle, uniformly mixing the soap water into the solution inside the reaction kettle, adjusting the temperature of the reaction kettle to a normal temperature state, continuously using the reaction kettle for stirring, taking out the mixture inside the reaction kettle when the temperature inside the reaction kettle is reduced to the room temperature, and performing sterilization treatment, thereby preparing the heat-resistant release agent.
Compared with the prior art, the invention provides a technical scheme that: a heat-resistant release agent for manufacturing brake shoes comprises the following components in parts by weight:
11 parts of epoxidized soybean oil;
6 parts of triolein;
6 parts of stearic acid;
4 parts of paraffin;
12 parts of an anionic surfactant;
4 parts of fatty glyceride;
and 43 parts of purified water.
A preparation method of a heat-resistant release agent for manufacturing brake shoes comprises the following steps:
s1, respectively weighing epoxidized soybean oil, triolein, stearic acid and fatty glyceride by an electronic scale according to the weight, sequentially adding the weighed epoxidized soybean oil, triolein, stearic acid and fatty glyceride into a reaction kettle, adjusting the temperature of the reaction kettle to 75-85 ℃, stirring for 10-15 minutes by the reaction kettle, and uniformly mixing the epoxidized soybean oil, triolein, stearic acid and fatty glyceride together;
s2, respectively weighing paraffin by an electronic scale according to the weight, then sequentially adding the weighed paraffin into a reaction kettle, and stirring for 10-15 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the paraffin and the solution in the reaction kettle;
s3, weighing the anionic surfactant by an electronic scale according to the weight, adding the weighed anionic surfactant into a reaction kettle, and stirring for 8-10 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the anionic surfactant into the solution in the reaction kettle;
s4, weighing purified water according to the weight by an electronic scale, adding the weighed purified water into a reaction kettle, adjusting the temperature of the reaction kettle to 85-90 ℃, stirring for 15-20 minutes by the reaction kettle, uniformly mixing the purified water into the solution inside the reaction kettle, adjusting the temperature of the reaction kettle to a normal temperature state, continuing to use the reaction kettle for stirring, taking out the mixture inside the reaction kettle when the temperature inside the reaction kettle is reduced to the room temperature, and performing sterilization treatment, thereby preparing the heat-resistant release agent.
Wherein, the heat-resistant release agent prepared in example 1 and comparative example is distinguished in that seaweed extract is used in the preparation raw material, purified water is replaced by soapy water in example 1, and other components are the same, brake shoe die casting is carried out by using the heat-resistant release agent prepared in example 1 and comparative example, brake shoe die-cast by using the die coated with the heat-resistant release agent prepared in example 1 is easy to release, brake shoe die-cast is difficult to release by using the heat-resistant release agent prepared in comparative example, so that the heat-resistant performance and surface activity of the heat-resistant release agent are improved by adding the seaweed extract to the heat-resistant release agent.
Wherein, the heat-resistant release agent prepared in example 2 and the comparative example is distinguished in that seaweed extract is used in the preparation raw material, purified water is replaced by soapy water in example 2, and the other components are the same, brake shoe die casting is carried out by using the heat-resistant release agent prepared in example 2 and the comparative example, brake shoes die-cast by using a die coated with the heat-resistant release agent prepared in example 2 are easy to release, brake shoe die casting is difficult to release by using the heat-resistant release agent prepared in the comparative example, so that the heat-resistant performance and the surface activity of the heat-resistant release agent are improved by adding the seaweed extract to the heat-resistant release agent.
Wherein, the heat-resistant release agent is prepared by uniformly mixing epoxidized soybean oil, triolein, stearic acid, paraffin, seaweed extract, an anionic surfactant and fatty glyceride into soap water according to a scientific and reasonable proportion, and the preparation method is simple; the epoxy soybean oil is used for replacing engine oil, so that pollution is reduced, the thermal stability of the release agent is improved, and the mechanical strength and the weather resistance of the release agent are improved; the activity of the release agent can be improved through the seaweed extract and the soapy water, the lubricating effect of the release agent is improved, and the release of the brake shoe formed by die casting is facilitated; meanwhile, the release agent has higher heat resistance, and is prevented from losing efficacy under the high-temperature condition in the process of die casting of the brake shoe, so that the release agent is ensured to still have good release performance under the high-temperature action, and the brake shoe is convenient to release.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A heat-resistant release agent for manufacturing brake shoes is characterized by comprising the following components in parts by weight:
10-12 parts of epoxidized soybean oil;
5-7 parts of triolein;
5-7 parts of stearic acid;
4-6 parts of paraffin;
13-15 parts of seaweed extract;
10-12 parts of an anionic surfactant;
3-5 parts of fatty glyceride;
40-45 parts of soapy water.
2. The heat-resistant mold release agent for brake shoe production according to claim 1, characterized in that: the seaweed extract is extracted from Sargassum pallidum of Sargassaceae.
3. The heat-resistant mold release agent for brake shoe production according to claim 1, characterized in that: the anionic surfactant is one or a mixture of two of diethyl sulfate, dimethyl sulfate, diethanolamine and triethanolamine.
4. The heat-resistant mold release agent for brake shoe production according to claim 1, characterized in that: the soapy water is formed by uniformly mixing soap and purified water, and the soap and the purified water are in a weight ratio of: 1:15.
5. The method for producing a heat-resistant release agent for brake shoe production according to any one of claims 1 to 4, characterized by comprising the steps of:
s1, respectively weighing epoxidized soybean oil, triolein, stearic acid and fatty glyceride by an electronic scale according to the weight, sequentially adding the weighed epoxidized soybean oil, triolein, stearic acid and fatty glyceride into a reaction kettle, adjusting the temperature of the reaction kettle to 75-85 ℃, stirring for 10-15 minutes by the reaction kettle, and uniformly mixing the epoxidized soybean oil, triolein, stearic acid and fatty glyceride together;
s2, respectively weighing paraffin and seaweed extract by an electronic scale according to the weight, then sequentially adding the weighed paraffin and seaweed extract into a reaction kettle, and stirring for 10-15 minutes through the reaction kettle at 75-85 ℃ so that the paraffin and seaweed extract are uniformly mixed into the solution in the reaction kettle;
s3, weighing the anionic surfactant by an electronic scale according to the weight, adding the weighed anionic surfactant into a reaction kettle, and stirring for 8-10 minutes at 75-85 ℃ through the reaction kettle to uniformly mix the anionic surfactant into the solution in the reaction kettle;
s4, weighing soap water by an electronic scale according to the weight, adding the weighed soap water into a reaction kettle, adjusting the temperature of the reaction kettle to 85-90 ℃, stirring for 15-20 minutes by the reaction kettle, uniformly mixing the soap water into the solution inside the reaction kettle, adjusting the temperature of the reaction kettle to a normal temperature state, continuously using the reaction kettle for stirring, taking out the mixture inside the reaction kettle when the temperature inside the reaction kettle is reduced to the room temperature, and performing sterilization treatment, thereby preparing the heat-resistant release agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011134623.XA CN112387923A (en) | 2020-10-21 | 2020-10-21 | Heat-resistant release agent for brake shoe manufacturing and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134623.XA CN112387923A (en) | 2020-10-21 | 2020-10-21 | Heat-resistant release agent for brake shoe manufacturing and preparation method thereof |
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