Rubber joint is a flexible connector used to connect pipelines. Its main features are that it can absorb vibration, reduce noise and compensate displacement during pipeline operation. It is widely used in many large buildings and important facilities. In the production of rubber joints, you can try to add some EPDM reclaimed rubber, which can reduce the cost of raw materials, save electricity costs, and achieve good economic benefits while ensuring the original physical performance indicators remain unchanged.
EPDM reclaimed rubber, as a new type of rubber material, has the following advantages:
1. Good mechanical properties. EPDM reclaimed rubber can be mixed with natural rubber, synthetic rubber and other materials to make various types of rubber products, and has high strength and wear resistance.
2. Excellent anti-aging performance. EPDM reclaimed rubber molecules contain stabilizers and antioxidants, making it difficult to age, crack or harden during long-term use.
3. Environmentally friendly and sustainable. Compared with traditional synthetic rubber, EPDM reclaimed rubber uses resources such as waste EPDM compound rubber, EPDM rubber, and waste EPDM sealing strips for recycling, which reduces environmental pollution and conforms to the concept of sustainable development .
4. Low cost. Since EPDM reclaimed rubber is recovered from raw materials, its price is relatively low, and it has obvious advantages in some large-scale application fields.
Under the modern society's pursuit of saving resources, protecting the environment and reducing costs, E3Y5y23 EPDM reclaimed rubber, as a new type of environmentally friendly material, has broad application prospects.
Formulation of rubber joints produced by EPDM reclaimed rubber, taking a 35-liter internal mixer as an example:
Premium EPDM reclaimed rubber 25kg, N550 carbon black 3kg, light calcium carbonate 5kg, coumarone resin 1.5kg, paraffin oil 1.5kg, polyethylene glycol 230g, zinc oxide 180g, stearic acid 270g , accelerator CZ120g, accelerator DM110g, accelerator TMTD35g, sulfur 260g. The vulcanization temperature is 160°C, and the vulcanization time is determined according to the product size.
In the production of water pipe joints from EPDM reclaimed rubber, the following process points need to be paid attention to in mixing and vulcanizing rubber:
1. Mixing formula. The performance of EPDM reclaimed rubber is different from that of new rubber. It is necessary to adjust the mixing formula and select appropriate plasticizers, anti-aging agents, fillers and other additives to ensure the processing performance, aging resistance and Product performance.
2. Mixing time and temperature. The mixing reaction speed of EPDM reclaimed rubber may be different. It is necessary to control the mixing time and temperature to ensure its full comprehensiveness and uniformity of rubber quality.
3. Vulcanization process. The vulcanization reaction temperature and time of EPDM reclaimed rubber may be different from that of new rubber. It is necessary to select the appropriate vulcanization temperature and time according to the vulcanization activity of reclaimed rubber to meet the hardness requirements.
The key to producing water pipe joints from EPDM reclaimed rubber is to select the appropriate process technology and parameters according to the characteristics of the reclaimed rubber, especially to focus on the control of mixing, vulcanization and other processes, and to ensure the performance and quality of the product through strict quality control The quality meets the requirements for use. The advantages of EPDM reclaimed rubber can only be brought into play if we have a deep understanding of the material properties and carefully design and implement the production process.
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