Optimization of dibutyltin dilaurate treatment process and its performance in elastomer materials

Introduction

Dibutyltin dilaurate (DBTDL), as an efficient catalyst and stabilizer, is widely used in the production of elastomer materials. This article will discuss the optimization method of DBTDL treatment process and its specific performance in elastomer materials, aiming to improve the performance and production efficiency of the material.

1. Treatment process optimization of dibutyltin dilaurate

1. Raw material selection and pretreatment

   • High-purity raw materials: Select high-purity dibutyltin oxide and lauric acid as raw materials to ensure product purity and performance.
   • Pretreatment: Pretreatment of raw materials, such as drying, filtration, etc., to remove impurities and improve reaction efficiency.

2. Optimization of reaction conditions

   • Temperature control: Strictly control the reaction temperature, usually within the range of 120-150°C, to ensure the smooth progress of the reaction.
   • Stirring speed: Maintain an appropriate stirring speed to ensure that the raw materials are fully mixed and improve reaction efficiency.
   • Reaction time: Adjust the reaction time according to the actual situation to ensure that the reaction is completed, usually 2-4 hours.
   • Pressure control: In a closed reaction system, control the appropriate reaction pressure to prevent the loss of volatile substances.

3. Optimization of catalyst addition amount

   • Experimental design: Determine the amount of catalyst added through orthogonal experimental design. Usually, the amount of DBTDL added is between 0.1% and 1%.
   • Performance test: Determine the amount of elastomer added by testing the properties of elastomer materials at different amounts, such as tensile strength, elongation at break, etc.

4. Post-processing and purification

   • Dehydration: The water produced during the reaction can be removed through a water separator to promote the reaction toward the product.
   • Refining: The product is further purified through methods such as distillation or extraction to remove residual raw materials and other impurities.
   • Drying: Dry the refined DBTDL in a vacuum drying oven to remove residual moisture and solvent.
   • Packaging: Seal and package the dried DBTDL to prevent it from contact with moisture in the air.

2. Performance of dibutyltin dilaurate in elastomer materials

1. Improve vulcanization performance

   • Accelerate the vulcanization reaction: DBTDL can significantly accelerate the vulcanization reaction, shorten the vulcanization time, and improve production efficiency.
   • Increase the degree of vulcanization: DBTDL helps to increase the degree of vulcanization, form a more uniform vulcanization network structure, and improve the performance of the material.

2. Improve physical and mechanical properties

   • Tensile strength: After adding DBTDL, the tensile strength of elastomer materials is significantly improved, usually by 10%-20%.
   • Elongation at break: The addition of DBTDL can increase the elongation at break of elastomer materials and enhance the flexibility and tear resistance of the material.
   • Hardness: An appropriate amount of DBTDL can adjust the hardness of elastomer materials to meet different application requirements.

3. Improve thermal stability

   • Thermal Aging Performance: DBTDL can improve the thermal stability of elastomer materials and reduce performance degradation during thermal aging.
   • High temperature performance: Under high temperature conditions, DBTDL can maintain stable material performance and extend the service life of the material.

4. Improve processing performance

   • Fluidity: DBTDL can improve the fluidity of elastomer materials and improve operability during processing.
   • Surface finish: After adding DBTDL, the surface finish of the elastomer material is improved and surface defects are reduced.

3. Experimental analysis and case studies

1. Experimental Design

   • Raw material selection: Use high-purity dibutyltin oxide and lauric acid.
   • Reaction conditions: Set the reaction temperature to 130°C and the reaction time to 3 hours.
   • Catalyst addition amount: Test the DBTDL addition amount of 0.1%, 0.5% and 1.0% respectively.
   • Post-processing: Refining the product by distillation and vacuum drying.

2. Experimental results

   • Purity Testing: HPLC test results show that the purity of DBTDL reaches 99.5%.
   • Moisture test: The Karl Fischer method test results show that the moisture content in the product is 0.1%.
   • Physical property testing: Appearance is colorless and transparent liquid, density is 1.02 g/cm³, viscosity is 150 mPa·s.

3. Performance testing

   • Tensile strength: After adding 0.5% DBTDL, the tensile strength of the elastomer material increased by 15%.
   • Breaking elongationElongation: After adding 0.5% DBTDL, the elongation at break of the elastomer material increased by 20%.
   • Hardness: After adding 0.5% DBTDL, the hardness of the elastomer material is moderate to meet the application requirements.
   • Thermal stability: After adding 0.5% DBTDL, the thermal aging performance of the elastomer material is significantly improved, and the high temperature performance is stable.

4. Application Cases

   • High-performance tires: A tire manufacturer uses elastomer materials with 0.5% DBTDL added in the production of high-performance tires. Test results show that the tire’s wear resistance and tear resistance are significantly improved, and its service life is extended.
   • Sealing materials: A sealing material manufacturer used elastomer materials with 0.5% DBTDL added in the production process. The test results show that the sealing performance and aging resistance of the sealing material are significantly improved, meeting customer needs.

4. Conclusion and outlook

Through the optimization of the treatment process of dibutyltin dilaurate and its application in elastomer materials, we have reached the following conclusions:

1. Process Optimization: By optimizing raw material selection, reaction conditions, catalyst addition, post-treatment and other steps, the purity and performance of DBTDL can be significantly improved.
2. Performance improvement: The application of DBTDL in elastomer materials can significantly improve the tensile strength, elongation at break, hardness and thermal stability of the material, and improve the processing performance of the material.
3. Wide application: DBTDL has excellent application performance in high-performance tires, sealing materials and other fields, and has broad application prospects.

Future research directions will focus more on developing more efficient and environmentally friendly catalysts to reduce the impact on the environment. In addition, by further optimizing the usage conditions of DBTDL, such as addition amount, reaction temperature, etc., its application effect in elastomer materials can be further improved and provide technical support for the development of related industries.

5. Suggestions

1. Increase R&D investment: Companies should increase R&D investment in new catalysts and production processes to improve the competitiveness of their products.
2. Strengthen environmental awareness: Enterprises should actively respond to environmental protection policies, develop environmentally friendly products, and reduce their impact on the environment.
3. Expand application fields: Enterprises should actively expand the application of DBTDL in other fields, such as medical care, construction, etc., to find new growth points.
4. Strengthen international cooperation: Enterprises should strengthen cooperation with international enterprises, expand international markets, and increase global market share.

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This article provides a detailed introduction to the optimization of the dibutyltin dilaurate treatment process and its application in elastomeric materials. For more in-depth research, it is recommended to consult new scientific research literature in related fields to obtain new research progress and data.

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