GB/T 31135-2014 in English
VALIDFiber reinforced unsaturated polyester powder moulding compounds(UP-PMC)for electrical purposes
- Issued on:2014-09-03
- Implemented on:2015-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 31135-2014 |
| Document status: | VALID |
| Title in English: | Fiber reinforced unsaturated polyester powder moulding compounds(UP-PMC)for electrical purposes |
| Title in Chinese: | 电气用纤维增强不饱和聚酯粉状模塑料（UP-PMC） |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2014-09-03 |
| Implemented on: | 2015-02-01 |
| ICS Classification: | 29.035.20-Plastics and rubber insulating materials |
| Chinese Classification: | K15-Electrical insulating material and its products |
| Professional Classification: | GB-National Standard |
| Related Topics: | fiber reinforced
Unsaturated Unsaturated polyester plastic up plastic up Unsaturated polyester plastic up unsaturated polyester molding compound powder version GBT31135 GB/T 31135-2014 Glass fiber cloth unsaturated polyester composite material standard Polyester fiber reinforced hose execution |
《GB/T 31135-2014电气用纤维增强不饱和聚酯粉状模塑料（UP-PMC）》由TC51（全国绝缘材料标准化技术委员会）归口，TC51SC1（全国绝缘材料标准化技术委员会电工用热固性模塑料分会）执行，主管部门为中国电器工业协会。
本标准规定了电气用纤维增强不饱和聚酯粉状模塑料(UP-PMC)的产品分类命名、性能要求、试验方法、检验、标志、包装、运输和贮存。
本标准适用于以不饱和聚酯树脂为基体,以纤维为增强材料制成的电气用纤维增强粉状模塑料(UP-PMC)。
Introduction
GB/T31135—2014 Technical Specification Interpretation
Background and Significance of Standard Formulation
With the growing demand for high-performance insulation materials in the electrical industry, GB/T31135—2014 "Fiber-reinforced Unsaturated Polyester Powder Molding Compound for Electrical Use (UP-PMC)" came into being. This standard is based on the ISO14530 series and is adjusted in accordance with the actual domestic situation to ensure the advancement and applicability of technical indicators.
Technology Evolution and Application Fields
UP-PMC materials are widely used in transformers, switchgear and other fields due to their excellent mechanical and electrical properties. In recent years, with the improvement of environmental protection requirements, material formulations have gradually developed towards low VOC and recyclability.
| Classification dimension | Matrix resin code | Reinforcement material type | Processing method | Performance index comparison |
|---|---|---|---|---|
| Matrix resin code | UP | Glass fiber (GF), mineral filler (MD), etc. | Injection molding (Q)/Compression molding (M) | Tensile stress at break ≥20 MPa, flexural strength ≥60 MPa |
| Reinforcement material type | - | Carbon (C), talc (T), polyaramid (R) | - | Dielectric strength ≥220 kV/mm, dielectric loss factor ≤0.03 |
| Processing method | - | - | Injection molding (Q), compression molding (M) | Molding shrinkage 1.80~2.10, density within the agreed range |
Implementation suggestions and precautions
Selection and verification: Select appropriate reinforcement materials and matrix resins according to the application environment. For example, GF30+MD50 formula is recommended for high temperature environments.
Test method: Carry out mechanical properties, electrical strength and other tests according to standard requirements, and ensure that the sample preparation conditions (temperature, humidity) comply with GB/T2918-1998.
Storage and transportation: Keep the packaging intact, avoid moisture and high temperature, it is recommended to store in a cool and dry place, and conduct type inspection regularly.
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