The leader of China special amines-

Articles posted by: admin

Home / admin

Application and safety evaluation of dibutyltin dilaurate in rubber industry

9月 23rd, 2024 News

Summary:
This article aims to explore the application of dibutyltin dilaurate (DBTDL) in the rubber industry and evaluate its safety. As an efficient vulcanization accelerator, DBTDL is widely used in the production of rubber products, especially in improving the vulcanization speed and enhancing the physical properties of rubber. However, due to its potential environmental and health risks, strict safety assessments have been conducted on the use of DBTDL in recent years. This article will provide an in-depth analysis of the mechanism of action, application areas, safety considerations, and possible future development directions of DBTDL.
1? Introduction
With the rapid development of the rubber industry, the demand for high-performance rubber products is increasing day by day. In order to meet this demand, chemists are constantly exploring new catalysts and accelerators to improve the processing efficiency of rubber and the quality of final products. Dibutyltin dilaurate (DBTDL), as an important vulcanization accelerator, has been widely used in the rubber industry. However, with the increasing attention to the environmental friendliness of chemicals and human health and safety, the safety assessment of DBTDL has become particularly important.
2? Introduction to dibutyltin dilaurate
Dibutyltin dilaurate is a colorless to pale yellow liquid with the molecular formula C16H34O2Sn and a molecular weight of approximately 379.04 g/mol. It is mainly used as an accelerator for rubber vulcanization, which can significantly accelerate the speed of vulcanization reaction and improve the mechanical properties of rubber products. In addition, it is also used as a heat stabilizer in the manufacturing process of certain plastic products.
3? Application in rubber industry
DBTDL, as a rubber vulcanization accelerator, can effectively shorten the vulcanization time and improve production efficiency. In practical applications, it is usually added to uncured rubber mixtures together with sulfur. When heated to a certain temperature, DBTDL decomposes to produce active tin ions, which can accelerate the cross-linking reaction between sulfur and rubber polymer chains, thereby forming a stable three-dimensional network structure. This three-dimensional network endows rubber materials with excellent mechanical strength and durability.
4? Security assessment
Although DBTDL has performed well in improving the quality of rubber products, it also has certain safety hazards. Research has shown that long-term exposure or excessive inhalation of DBTDL may cause respiratory irritation, skin allergic reactions, and even neurological damage. Therefore, strict safety measures need to be taken when using DBTDL, such as wearing appropriate personal protective equipment (PPE) and operating in a well ventilated environment.
In addition, environmental considerations cannot be ignored. DBTDL may cause pollution to water bodies and soil during production, use, and disposal, thereby affecting ecosystem balance. To this end, governments and relevant institutions around the world are gradually strengthening the supervision of products containing DBTDL, promoting the industry to develop towards a more environmentally friendly direction.
5? Future prospects
Faced with increasingly strict environmental requirements and high public attention to health issues, the rubber industry must seek new materials and technological solutions to replace DBTDL. R&D personnel are committed to developing non-toxic or low toxicity new accelerators, striving to reduce potential harm to the environment and human health while ensuring product performance. In addition, improving production processes and strengthening waste management can effectively reduce the negative impact of DBTDL.
conclusion
In summary, although dibutyltin dilaurate has played an important role in the rubber industry, its potential safety issues should not be underestimated. Future research and development directions should focus on finding safer and more reliable alternatives, and continuously improving existing usage norms and technological means, in order to achieve a positive interaction between economic benefits and environmental protection.
(Note: The above content is a general description based on existing knowledge. Specific application details and technical parameters need to refer to professional literature.)

Further reading?

cyclohexylamine

Tetrachloroethylene Perchloroethylene CAS:127-18-4

NT CAT DMDEE

NT CAT PC-5

N-Methylmorpholine

4-Formylmorpholine

Toyocat TE tertiary amine catalyst Tosoh

Toyocat RX5 catalyst trimethylhydroxyethyl ethylenediamine Tosoh

NT CAT DMP-30

NT CAT DMEA

The use of dibutyltin dilaurate as an efficient catalyst in plastic products

9月 23rd, 2024 News

Introduction

Dibutyltin dilaurate (DBTDL), as an efficient organometallic catalyst, is widely used in the production of plastic products. This article will discuss the specific application of DBTDL in the plastics industry and its mechanism of action, and analyze its advantages and disadvantages.

1. Basic properties of dibutyltin dilaurate

Dibutyltin dilaurate (DBTDL) is a commonly used organometallic catalyst with the following basic properties:

  • Chemical formula: C22H46O2Sn
  • Appearance: colorless to light yellow transparent liquid
  • Boiling point: approximately 210°C (under vacuum conditions)
  • Melting point: -45°C
  • Solubility: Soluble in most organic solvents

2. Application in plastic products

The application of dibutyltin dilaurate in the production of plastic products is mainly reflected in the following aspects:

  1. PVC Stabilizer
    • Soft PVC: In soft PVC products, DBTDL serves as an auxiliary heat stabilizer, which can improve the thermal stability and processing performance of PVC.
    • Rigid PVC: For rigid PVC products, DBTDL can also play a role in enhancing material performance, especially in situations where transparency is required.
  2. Catalyst
    • Polyurethane foam: In the production process of polyurethane foam, DBTDL acts as a catalyst to promote the reaction between isocyanate and polyol and accelerate foam curing.
    • Polyester resin: Used to catalyze the curing of unsaturated polyester resin to improve reaction rate and product quality.
  3. Modifier
    • Elastomer: Adding DBTDL to some elastomer materials can improve their elasticity and mechanical strength.

3. Mechanism of action

The reason why DBTDL can play an important role in plastic products is closely related to its unique chemical structure and catalytic activity:

  1. Catalytic Mechanism
    • Promote reaction: DBTDL reduces the reaction activation energy by interacting with the active groups in the reactants, thereby accelerating the reaction process.
    • Stabilized intermediates: The intermediates formed during the reaction can be stabilized by DBTDL to prevent side reactions.
  2. Thermal Stability
    • Improve heat resistance: DBTDL can react with unstable chlorine free radicals in PVC, reduce dehydrochlorination reaction, and improve the thermal stability of the material.
    • Delay aging: During long-term use, DBTDL can continue to play a role in delaying the aging process of materials.

4. Analysis of advantages and disadvantages

  1. Advantages
    • High efficiency: As a catalyst, DBTDL can exert significant catalytic effect at a lower concentration and improve production efficiency.
    • Versatility: In addition to its role as a catalyst, DBTDL can improve the thermal stability and mechanical properties of materials.
    • Wide range of application: Suitable for the production of a variety of plastic products, such as PVC, polyurethane foam, etc.
  2. Disadvantages
    • Environmental issues: DBTDL contains heavy metal tin, which may cause environmental pollution during its production, use and disposal.
    • Health risks: Long-term exposure to DBTDL may have adverse effects on human health, and necessary protective measures need to be taken.
    • Regulatory restrictions: With the tightening of environmental regulations, the use of DBTDL is subject to certain restrictions, especially in food contact materials.

5. Application case studies

  1. PVC Flooring
    • Case Background: A PVC flooring manufacturer used a heat stabilizer containing DBTDL in its production process.
    • Application effect: The addition of DBTDL significantly improves the thermal stability and service life of PVC flooring, allowing the product to gain a good reputation in the market.
    • Environmental protection: In order to reduce the impact on the environment, the company actively develops new environmentally friendly heat stabilizers and gradually reduces the proportion of DBTDL used.
  2. Polyurethane foam
    • Case Background: A polyurethane foam manufacturer introduced DBTDL as a catalyst in the production process.
    • Application effect: The addition of DBTDL greatly shortens the foam curing time and improves production efficiency.
    • Health and Safety: The company is aware of the potential health risks of DBTDL, strengthens safety protection measures in the workplace, and conducts regular health checks on workers.

6. Future development direction

With the growing demand for environmentally friendly materials, the future development trend of the plastics industry will be more inclined to develop and use more environmentally friendly and safer alternatives. This includes but is not limited to:

  1. Bio-based catalysts: Research and develop catalysts based on natural renewable resources to reduce environmental impact.
  2. Non-toxic or low-toxic catalysts: Explore a new generation of catalysts that do not contain heavy metals to improve material safety.
  3. Multifunctional composite materials: Composite technology integrates multiple functions into a single material to improve overall performance.
  4. Circular economy model: Promote the use of recyclable and degradable plastic products to reduce the burden of waste on the environment.

7. Conclusion

Dibutyltin dilaurate, as an efficient organometallic catalyst, plays an important role in the production of plastic products. However, its potential environmental and health risks cannot be ignored. Through technological innovation and strict regulatory management, the adverse effects of DBTDL on the environment and human health can be minimized while ensuring the development of the plastics industry. Future research and practice will pay more attention to sustainability and social responsibility, and promote the development of the plastics industry in a greener and healthier direction.

This article provides a study of the use of dibutyltin dilaurate in plastic products. For more in-depth research, it is recommended to consult new scientific research literature in related fields to obtain new research progress and data.

Extended reading:

cyclohexylamine

Tetrachloroethylene Perchloroethylene CAS:127-18-4

NT CAT DMDEE

NT CAT PC-5

N-Methylmorpholine

4-Formylmorpholine

Toyocat TE tertiary amine catalyst Tosoh

Toyocat RX5 catalyst trimethylhydroxyethyl ethylenediamine Tosoh

NT CAT DMP-30

NT CAT DMEA

How to properly store dibutyltin dilaurate to extend its service life

9月 23rd, 2024 News

Introduction

Dibutyltin dilaurate (DBTDL), as an efficient catalyst, is widely used in many industrial fields. Correct storage methods are essential to maintain its performance and extend its service life. This article will introduce in detail the correct storage method of DBTDL and the scientific principles behind it.

1. Basic storage requirements

To ensure that the quality of DBTDL is not affected, the following are some basic storage requirements:

  1. Sealed storage

    • Use sealed containers to store DBTDL to avoid contact with moisture or other impurities in the air to prevent chemical changes.

  2. Cryogenic storage

    • Save DBTDL at a lower temperature as much as possible to reduce the speed of chemical reactions and extend its service life.

  3. Store away from light

    • Light may accelerate certain chemical reactions, so DBTDL should be stored in a cool place away from direct sunlight.

  4. Dry environment

    • Keep the storage environment dry to avoid the impact of high humidity on DBTDL.

  5. Keep away from fire

    • DBTDL is a flammable chemical and should be kept away from fire and heat sources to avoid accidents.

  6. Independent storage

    • It is best to store DBTDL separately and avoid mixing it with other chemicals to prevent cross-contamination.

2. Selection of storage environment

  1. Warehouse conditions

    • Choose a warehouse with good ventilation and moderate temperature for storage.
    • The temperature should be controlled within the room temperature range (about 15°C to 25°C) and avoid high or low temperature environments.

  2. Packaging materials

    • Use high-quality airtight containers, such as glass bottles or stainless steel buckets, and make sure the seals are intact.
    • Packaging materials should be compatible with DBTDL and should not react chemically.

  3. Stacking method

    • When stacking in the warehouse, ensure that there is enough space between containers to facilitate air circulation.
    • Avoid stacking too high to prevent tipping or breakage.

3. Precautions during storage

  1. Clear labels

    • Clearly label each storage container with information such as chemical name, batch number, production date, and expiration date.

  2. Regular inspection

    • Regularly check whether the temperature, humidity and other parameters of the storage environment meet the requirements.
    • Check container seals to ensure there are no leaks or damage.

  3. Record Management

    • Establish detailed entry and exit records to track the usage of each batch of DBTDL.
    • Record any abnormal situations and take timely measures to deal with them.

  4. Safety training

    • Conduct safety training for all personnel involved in the storage and use of DBTDL to ensure that they understand the correct operating procedures and emergency response methods.

4. Special requirements for long-term storage

  1. Regularly replace containers

    • During long-term storage, the tightness of the container should be checked at regular intervals and replaced with new sealed containers as necessary.

  2. Temperature control

    • For DBTDL that needs to be stored for a long time, you can consider placing it in a specially designed low-temperature warehouse or refrigeration equipment.

  3. Moisture-proof measures

    • When storing in a high-humidity environment, additional moisture-proof measures should be taken, such as using hygroscopic agents.

  4. Regular sampling inspection

    • For long-term storage of DBTDL, samples should be taken regularly for quality testing to ensure that its chemical properties have not changed.

5. Case Analysis

Suppose a chemical company encounters the following problems when storing DBTDL:

  • Leaking container: A minor crack in one of the containers due to improper handling.
  • Ambient temperature fluctuation: Seasonal changes in the area where the warehouse is located cause frequent changes in indoor temperature.
  • Chaos in inventory management: The lack of an effective inventory management system resulted in the failure to process some expired DBTDL in a timely manner.

To solve these problems, the company has taken the following measures:

  • Strengthen container management: Re-evaluate the sealing performance of all storage containers and replace problematic containers in a timely manner.
  • Optimize storage conditions: Install air conditioning systems to maintain constant temperature and humidity in the warehouse.
  • Improve the information system: Establish an electronic inventory management system to realize real-time monitoring of each batch of DBTDL.

6. Summary

Correct storage of dibutyltin dilaurate can not only ensure its stable performance, but also effectively extend its service life. By following the above storage requirements and making appropriate adjustments based on specific application scenarios, the value of DBTDL can be maximized. In the future, with science and technologyWith the advancement of technology and the improvement of environmental awareness, the storage and management of DBTDL will be more strict and scientific.

7. Outlook

With the continuous emergence of new materials and new technologies, the storage of chemicals will pay more attention to environmental protection and safety in the future. Enterprises should actively adopt advanced management concepts and technical means to improve the safety management level of chemicals and contribute to sustainable development.

This article provides comprehensive guidance on the correct storage of dibutyltin dilaurate. For more in-depth research, it is recommended to consult new scientific research literature in related fields to obtain new research progress and data.

Extended reading:

cyclohexylamine

Tetrachloroethylene Perchloroethylene CAS:127-18-4

NT CAT DMDEE

NT CAT PC-5

N-Methylmorpholine

4-Formylmorpholine

Toyocat TE tertiary amine catalyst Tosoh

Toyocat RX5 catalyst trimethylhydroxyethyl ethylenediamine Tosoh

NT CAT DMP-30

NT CAT DMEA

1•16481649165016511652•2080
Page 1650 of 2080