SH/T 1846-2024 in English
VALIDAcrylonitrile-styrene-acrylate (ASA) co-extrusion materials for synthetic resin tile
- Issued on:2024-04-10
- Implemented on:2024-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
本文件规定了合成树脂瓦用丙烯腈-苯乙烯-丙烯酸酯（ASA）共挤专用料的分类与命名、要求、试样制备、试验方法、检验规则、标志和随行文件及包装、运输和贮存。 本文件适用于以丙烯腈-苯乙烯-丙烯酸酯树脂为基体材料，添加了着色剂、抗氧剂、光稳定剂等助剂，用于合成树脂瓦共挤表面的专用料。
Introduction
Analysis of the core content of the standard
This document systematically standardizes the technical system of ASA co-extrusion special materials for synthetic resin tiles for the first time. Its core indicators highlight the balance between weather resistance and processing performance:
| Key performance | Technical requirements | Test methods |
|---|---|---|
| Ultraviolet blocking rate | ≤0.0001 | GB/T 2680 |
| Xenon lamp aging color difference | △E≤1(10000h) | GB/T16422.2 |
| Heat reflection performance | Solar reflectance ≥ 0.5 (RF type) | GB/T 2680 |
Detailed explanation of material naming system
The standard establishes a five-section naming rule: ASA-GJ-10-RF-R means:
- Base material type: ASA resin
- Application code: GJ (co-extrusion)
- Melt index value: 10g/10min
- Heat reflection function: RF (available)
- Color identification: R (red)
Typical application case
A project adopts ASA-GJ-15-PT-G material production of synthetic resin tiles, after testing:
- 10 years of natural exposure to color difference △E = 0.8
- Vicat softening temperature of 85 ℃
- Tensile strength retention rate> 95%
Technology Evolution Analysis
Compared with traditional PVC tile materials, the ASA material specified in this standard has three major breakthroughs:
| Comparison Dimensions | ASA Materials | Traditional PVC |
|---|---|---|
| Weathering Life | 15-20 Years | 5-8 Years |
| Ambient temperature adaptability | -40℃~80℃ | -10℃~60℃ |
| Difficulty of recycling | Reprocessable 3 times | Serious thermal degradation |
Implementation suggestions
Key points of production process control
- Drying conditions: (80±5)℃×4h, material layer thickness ≤3cm
- Injection molding parameters: melt temperature 230℃, mold temperature 60℃
- Color difference control: Use D65 light source, measuring aperture ≥20mm
Quality verification plan
- Each batch must be tested: melt index, tensile strength, Vicat temperature
- Annual type inspection: including all 9 basic performance items
- Aging verification: 1000h xenon lamp test is equivalent to 3 years of outdoor use
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