GB/T 33070-2016 in English
VALID1一Vinyl一2一pyrrolidinone homopolymer for industrial use
- Issued on:2017-05-01
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 33070-2016工业用聚N-乙烯基吡咯烷酮》由TC15（全国塑料标准化技术委员会）归口，TC15SC11（全国塑料标准化技术委员会热固性塑料分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
GB/T33070-2016 Interpretation of the Standard for Industrial Poly(N-vinylpyrrolidone)
Background and Significance of the Standard
Poly(N-vinylpyrrolidone) (PVP) is an important thermosetting plastic material, widely used in coatings, adhesives, composite materials and other fields. The formulation of GB/T33070-2016 fills the gap in domestic standards in this field and provides an important basis for product quality control and testing.
This standard is managed by the National Technical Committee for Plastics Standardization, and the drafting units include Shanghai Yu'ang Waterborne New Materials Technology Co., Ltd. and other industry-leading companies. The background of its formulation is mainly based on the development needs of the industry and international trade requirements to ensure that product performance is in line with international standards.
| Items | Powder (superior/qualified) | Solution (superior/qualified) | ||
|---|---|---|---|---|
| Appearance | White to light yellow powder | Colorless to light yellow, clear and transparent solution | Colorless to light yellow, viscous solution | Colorless to light yellow, clear and transparent solution |
| K value | ≤15 | ≥85%~105% of the labeled value | ≤15 | ≥90%~108% of the indicated value |
| NVP residual monomer (%) | ≤0.01/≤0.05 | ≤0.01/≤0.05 | — | — |
Technical requirements and quality indicators
Industrial PVP is divided into two forms: powder and solution. Its quality indicators include appearance, K value, solid content, pH value, etc. Table 1 lists the specific requirements of different products in detail to ensure that the product quality meets the needs of industrial use.
Actual application case: coatings industry
When a coatings company uses PVP as a thickener, it ensures the stability of product performance by testing its K value and solid content. The company strictly follows the GB/T33070-2016 standard in procurement, which effectively improves product quality.
Inspection methods and rules
GB/T33070-2016 stipulates a strict inspection process. Factory inspection includes items such as appearance, K value, solid content or moisture, NVP residual monomer and pH value to ensure that product quality meets the requirements.
Type inspection is carried out when the product is finalized or the process is changed, covering all technical indicators. The inspection rules emphasize the handling process of unqualified products to ensure the quality of products circulated in the market.
Technical evolution and future prospects of standards
PVP materials are constantly being innovated in industrial applications, and the formulation of GB/T33070-2016 reflects my country's technological progress in this field. In the future, as environmental protection requirements increase, the standards may be further refined, especially in terms of environmentally friendly indicators.
Implementation Suggestions
- Enterprises should establish internal quality control systems and conduct production and inspection in strict accordance with standards.
- In the procurement process, clarify product form and testing index requirements to ensure a stable supply chain.
- Strengthen technical training to improve technical personnel's understanding and implementation capabilities of standards.
- It is recommended to participate in industry standardization activities to promote standard updates and applications.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
