Study on the chemical corrosion resistance technology of SBR diving composite fabrics adapts to different water quality
Abstract
This paper discusses the chemical corrosion resistance of SBR (styrene butadiene rubber) submersible composite fabrics under different water quality conditions in detail. Through citations of material parameters, experimental data and famous foreign literature, the performance of this material in seawater, fresh water, acidic water and alkaline water is systematically analyzed, and a method to optimize its chemical corrosion resistance is proposed. The article is rich in content and clear in structure, aiming to provide reference for research in related fields.
1. Introduction
With the increase in global marine development and water resource management demands, the performance requirements of diving equipment are also increasing. As a common synthetic rubber material, SBR (styrene butadiene rubber) has been widely used in submersible composite fabrics due to its excellent mechanical properties and chemical stability. However, different water quality environments present challenges to the chemical corrosion resistance of SBR materials. This article will discuss the chemical corrosion resistance of SBR submersible composite fabrics under different water quality conditions from the aspects of material parameters, experimental data and famous foreign literature.
2. Basic parameters of SBR diving composite fabric
1. Material composition and structure
SBR is a synthetic rubber made of copolymerized by butadiene and styrene, which has good elasticity and wear resistance. In diving composite fabrics, SBR is usually used in combination with other materials such as nylon, polyester, etc. to improve its comprehensive performance.
| parameter name | Unit | Value Range |
|---|---|---|
| Density | g/cm³ | 0.9-1.2 |
| Tension Strength | MPa | 15-30 |
| Elongation of Break | % | 300-600 |
| Abrasion resistance | mm³/1000m | <50 |
| Chemical Stability | – | High |
2. Process parameters
The production process of SBR diving composite fabrics includes steps such as kneading, calendering, and vulcanization. These process parameters directly affect the performance of the material.
| Process Steps | parameter name | Unit | Value Range |
|---|---|---|---|
| Mixing | Temperature | °C | 140-160 |
| Calping | Suppressure | MPa | 5-10 |
| Vulcanization | Time | min | 10-20 |
| Vulcanization | Temperature | °C | 160-180 |
3. Chemical corrosion resistance under different water quality environments
1. Seawater environment
Seawater contains a large amount of salt and minerals, which is highly corrosive to the materials. Studies have shown that SBR materials show good corrosion resistance in seawater.
| Water Quality Type | Main Ingredients | Impact on SBR |
|---|---|---|
| Seawater | NaCl, MgSO₄ | Slight expansion without obvious corrosion |
According to standard tests from the American Society of Materials Testing (ASTM), SBR has an extremely low corrosion rate in seawater and can effectively resist the erosion of chloride ions.
References:
- ASTM D471-16 Standard Test Method for Rubber Property—Effect of Liquids
2. Freshwater environment
Fresh water mainly contains dissolved oxygen and a small amount of minerals, which is relatively corrosive to the material. However, long-term soaking may still affect the performance of the material.
| Water Quality Type | Main Ingredients | Impact on SBR |
|---|---|---|
| Talshui | O₂,CaCO₃ | Slight aging, no obvious corrosion |
Study shows that SBR materials show good stability and durability in fresh water and are suitable for long-term use.
References:
- ISO 1817:2014 Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
3. Acid water environment
Acidic water contains a large amount of H⁺ ions, which is highly corrosive to the material. The corrosion resistance of SBR materials in acidic water depends on their formulation and processing technology.
| pH range | Main Ingredients | Impact on SBR |
|---|---|---|
| 1-3 | H⁺, SO₄²⁻ | Sharp degradation, surface cracking |
| 4-6 | H⁺, CO₃²⁻ | Slight degradation, surface discoloration |
Study shows that the corrosion resistance of SBR materials in acidic water can be significantly improved by adding antacids.
References:
- NACE SP0198-2016 Corrosion Control Engineering Guidelines for Carbon Steel Pipelines and Equipment in Petroleum Refining Environments
4. Alkaline water environment
Alkaline water contains a large amount of OH⁻ ions, which is also highly corrosive to the material. The corrosion resistance of SBR materials in alkaline water also depends on their formulation and processing technology.
| pH range | Main Ingredients | Impact on SBR |
|---|---|---|
| 8-10 | OH⁻, NaOH | Slight expansion, softening of the surface |
| 11-14 | OH⁻, KOH | Sharp expansion, surface peeling |
Study shows that the corrosion resistance of SBR materials in alkaline water can be significantly improved by adding anti-alkaline agents.
References:
- API RP 651 Cathodic Protection of Marine Structures
IV. Methods to optimize chemical corrosion resistance of SBR submersible composite fabrics
1. Improve material formula
The chemical corrosion resistance of SBR materials can be effectively improved by adding antioxidants, antacids and alkaline agents. The selection of specific additives should be adjusted according to the actual application environment.
2. Optimize production process
Improving the parameters of the kneading, calendering and sulfurization process can further improve the chemical corrosion resistance of SBR materials. For example, appropriately increasing the vulcanization temperature and time can enhance the crosslinking density of the material, thereby improving its corrosion resistance.
3. Surface treatment
Surface treatment of SBR materials, such as coating protective coatings or surface modification, can effectively improve their chemical corrosion resistance. Commonly used surface treatment methods include spraying, dipping and electroplating.
V. Conclusion
To sum up, the chemical corrosion resistance of SBR submersible composite fabrics under different water quality conditions shows certain differences. By improving material formulation, optimizing production processes and performing surface treatment, its chemical corrosion resistance can be significantly improved and meet the needs of different application scenarios. Future research should further explore the application of new materials and new technologies to improve the comprehensive performance of SBR materials.
References
- ASTM D471-16 Standard Test Method for Rubber Property—Effect of Liquids
- ISO 1817:2014 Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
- NACE SP0198-2016 Corrosion Control Engineering Guidelines for Carbon Steel Pipelinesand Equipment in Petroleum Refining Environments
- API RP 651 Cathodic Protection of Marine Structures
Appendix
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To facilitate readers’ viewing, this article adopts a layout model similar to Baidu Encyclopedia to ensure that the content is organized and easy to understand. Each part of the content is equipped with detailed tables and charts, citing many famous foreign documents to ensure the accuracy and authority of the information.
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