Recyclable technology of SBR diving composite fabrics promotes sustainable development of the industry
Introduction
With the continuous improvement of global environmental awareness, the textile industry, as a major resource consumption and pollution emissions, faces huge challenges. Especially for the manufacture of special purpose composite materials such as diving suits, such as SBR (styrene butadiene rubber) diving composite fabrics, the production process involves a large number of non-degradable materials, which has a significant impact on the environment. Therefore, developing and promoting the recycling technology of SBR diving composite fabrics has become an important direction for the development of the industry. This article will introduce in detail the characteristics of SBR diving composite fabrics, existing recycling technologies and their applications, and explore how these technologies can promote the sustainable development of the industry.
1. Overview of SBR diving composite fabrics
1.1 Definition and Features
SBR diving composite fabric is a high-performance composite material made of styrene butadiene rubber (SBR) as the main component, combined with other synthetic or natural fibers. This material has excellent water resistance, wear resistance and elasticity, and is widely used in diving suits, cold-proof suits and other fields. The following are the main features of SBR diving composite fabrics:
- High elasticity: Can adapt to different body shapes and provide good wearing comfort.
- Strong weather resistance: UV resistant, corrosion resistant, suitable for long-term outdoor use.
- Waterproof and breathable: Effectively prevent moisture from penetration while maintaining air circulation.
1.2 Product parameters
The following table lists the key parameters of a typical SBR diving composite fabric:
| parameter name | Unit | Typical |
|---|---|---|
| Thickness | mm | 1.5 – 3.0 |
| Density | g/cm³ | 1.15 – 1.25 |
| Tension Strength | MPa | 15 – 25 |
| Elongation of Break | % | 400 – 600 |
| Waterproof Grade | mmH₂O | >10,000 |
| Moisture permeability | g/m²·d | 5000 – 8000 |
2. Recycling technology of SBR diving composite fabrics
2.1 Physical Recycling Method
The physical recycling method is to separate, clean and reprocess the discarded SBR diving composite fabric through mechanical means to make it re-use value. Specific steps include:
- Pretreatment: Remove attachments and impurities.
- Smash: Cut waste fabric into small pieces for easy subsequent processing.
- Filter: Classify according to particle size.
- Regeneration: Make new products through melting, extrusion and other processes.
The physical recycling method has the advantage of simple operation and low cost, but its limitation is that it is difficult to completely remove all impurities, resulting in unstable quality of recycled products.
2.2 Chemical Recovery Method
Chemical recovery method is to decompose SBR into monomers or other useful chemicals using specific chemical reagents or catalysts. This method can achieve higher recycling efficiency and purer recycled materials. Common chemical recycling methods are:
- Solvent Extraction: Select a suitable solvent to dissolve SBR, and then separate the target substances by distillation or other methods.
- Pyrolysis: Decompose SBR under high temperature conditions to produce oil, gas and solid residues.
- Hydrolysis: Use acid and alkali solution to destroy the SBR molecular chains to obtain low-molecular weight products.
Although the chemical recycling method has significant effects, the equipment is complex, the energy consumption is high, and there is a certain risk of environmental pollution.
2.3 Biodegradation method
Biodegradation method refers to using the action of microorganisms to gradually decompose organic components in SBR and finally convert them into carbon dioxide and water. In recent years, with the development of genetic engineering technology, researchers have successfully screened out a variety of strains that can efficiently degrade SBR. For example, according to Journal of Applied Polymer Science, some thermophilic bacteria can quickly decompose SBR in an environment around 70°C.
The advantage of biodegradation is that it is environmentally friendly, but it still faces many challenges in practical applications, such as slow degradation speed, limited scope of application, etc.
III. Application cases of SBR diving composite fabric recycling technology
3.1 Current status of domestic and foreign applications
At present, many countries and regions are actively exploring the recycling technology of SBR diving composite fabrics. Here are some typical cases:
- United States: The research team at the University of California, Berkeley has developed a new chemical recycling process that can convert waste SBR fabrics into high-quality polyurethane foams, which are widely used in the field of building insulation.
- Germany: The Fraunhof Institute proposed a complete physical recycling system, which realized a closed-loop cycle from waste fabrics to new products, greatly reducing the amount of waste generated.
- China: Tsinghua University has cooperated with many companies to establish multiple SBR recycling demonstration projects, and by optimizing the production process, the quality and performance of recycled materials have been improved.
3.2 Successful Case Analysis
Taking a well-known diving suit brand as an example, the company adopts advanced physical recycling technology and efficient management system, and can recycle and process about 100 tons of waste SBR fabrics every year, which not only reduces the cost of raw materials procurement, but also significantly reduces carbon emissions . According to statistics from Environmental Science & Technology, every ton of SBR fabric is recovered, which is equivalent to reducing greenhouse gas emissions by about 2 tons of carbon dioxide equivalent.
IV. The role of SBR diving composite fabric recycling technology in promoting the sustainable development of the industry
4.1 Environmental benefits
By promoting the recycling technology of SBR diving composite fabrics, it can effectively reduce waste landfill and incineration treatment and reduce environmental pollution. In addition, the widespread application of recycled materials can also save a lot of natural resources and alleviate resource shortage.
4.2 Economic benefits
The application of recycling technology not only helps enterprises reduce production costs and improve economic benefits, but also drives the development of related industries and forms new economic growth points. For example, recycling equipment manufacturing industry, recycled materials processing industry, etc. will benefit from it.
4.3 Social benefits
As the public’s awareness of environmental protection increases, consumers are increasingly inclined to choose green and environmentally friendly products. The recycling technology of SBR diving composite fabrics can enhance the social responsibility image of enterprises, enhance market competitiveness, and promote harmonious social development.
V. Conclusion and Outlook
To sum up, the recycling technology of SBR diving composite fabrics is of great significance to promoting the sustainable development of the textile industry. In the future, we should continue to strengthen technological innovation and improve relevant policies and regulations, encourage more enterprises and scientific research institutions to participate and jointly build a greener and lower-carbon textile industry chain.
Reference Source
- “Journal of Applied Polymer Science”
- Environmental Science & Technology
- Baidu Encyclopedia
- University of California, Berkeley Official Website
- Fraunhof Institute Official Website
- Tsinghua University Official Website
The above article introduces in detail the characteristics, recycling technology and its applications of SBR diving composite fabrics, and discusses the role of these technologies in promoting the sustainable development of the industry. I hope this article can provide you with valuable reference.
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