GB/T 33428-2016 in English

1. Background and significance of the standard

Polyacrylate rubber (Polyacrylubber) is an important synthetic rubber material, widely used in the fields of automobiles, construction, chemicals, etc. The GB/T33428-2016 standard is formulated to regulate the production and application of polyacrylate rubber and ensure that its quality and performance meet market demand.

2. Comparison of standard frameworks

3. Naming and brand of polyacrylate rubber

According to GB/T5576, the code of polyacrylate rubber is ACM. Its brand consists of three parts:

• Part 1:Variety code ACM
• Part 2:Three Arabic numerals, representing the cold resistance grade, vulcanization point monomer type and antioxidant information.
• Part 3:Additional information, such as low oil resistance (L) or specific modified monomer (X).

4. Technical requirements and evaluation methods

Table 1 lists the technical indicators of polyacrylate rubber in detail, including volatile matter, ash content, Mooney viscosity and vulcanized rubber properties. For example:

• Volatile matter/%: ≤1.3 (GB/T24131-2009)
• Ash content/%: ≤1.3 (GB/T4498.1-2013)
• Mooney viscosity ML(1+4) 100℃:Depending on the grade, the range is 35±10 to 55±10.

5. Implementation Suggestions

To ensure that the quality and performance of polyacrylate rubber meet the GB/T33428-2016 standard, it is recommended that:

1. Naming and classification should be carried out strictly in accordance with the grade rules specified in the standard.
2. During the production and inspection process, focus on key indicators such as volatile matter, ash content and Mooney viscosity.
3. Use the sample preparation method specified in Appendix A to ensure that the vulcanization conditions meet the requirements.