POM LD755旭化成
更新时间:2024-06-12 16:58:52 信息编号:5843509 发布者IP:59.63.224.246 浏览:32次![](http://img.11467.com/2020/07-24/3888236991.jpg)
- 供应商
- 东莞市晶宏塑胶原料有限公司 商铺
- 认证
- 资质核验:已通过营业执照认证入驻顺企:第7年主体名称:东莞市晶宏塑胶原料有限公司组织机构代码:91441900MA5152YX6E
- 报价
- 请来电询价
- 生产厂商
- 日本旭化成
- 牌号
- LD755
- 特性
- 共聚物,高流量,高刚度,低翘曲变形
- 关键词
- LD755
- 所在地
- 东莞市樟木头镇百果洞百顺小区三巷5号一楼(注册地址)
- 联系电话
- 18200646066
- 手机号
- 18200646066
- 微信号
- 18200646066
- 经理
- 蒋珂 请说明来自顺企网,优惠更多
产品详细介绍
POM LD755旭化成,LD755是一种聚甲醛(POM)共聚物产品,低粘度、高刚度、高流动性, 密度:1.52 g/cm3 吸水率:0.2 % 成型收缩率:1.5 % 缺口冲击强度:29 硬度:80 热变形温度:130 ℃
物理性能 额定值 单位制 测试方法 比重 1.52 g/cm³ ASTM D792, ISO 1183 熔流率(熔体流动速率) (190°C/2.16 kg) 25 g/10 min ISO 1133 收缩率 - 流动 1.4 到 1.6 % 内部方法 吸水率 (23°C, 24 hr, 50% RH) 0.20 % ASTM D570 硬度 额定值 单位制 测试方法 洛氏硬度 ASTM D785 M 级 70 ASTM D785 R 级 115 ASTM D785 机械性能 额定值 单位制 测试方法 拉伸模量 3500 MPa ISO 527-2 拉伸应力 屈服 53.0 MPa ISO 527-2 -- 51.0 MPa ASTM D638 伸长率 断裂 8.0 % ASTM D638 断裂 10 % ISO 527-2 弯曲模量 -- 3390 MPa ASTM D790 -- 3400 MPa ISO 178 弯曲强度 86.0 MPa ASTM D790 冲击性能 额定值 单位制 测试方法 简支梁缺口冲击强度 3.0 kJ/m² ISO 179 悬壁梁缺口冲击强度 32 J/m ASTM D256 热性能 额定值 单位制 测试方法 载荷下热变形温度 0.45 MPa, 未退火 159 °C ASTM D648 0.45 MPa, 未退火 160 °C ISO 75-2/B 1.8 MPa, 未退火 130 °C ASTM D648 1.8 MPa, 未退火 110 °C ISO 75-2/A 线形热膨胀系数 - 流动 8.0E-5 cm/cm/°C ASTM D696, ISO 11359-2 可燃性 额定值 测试方法 UL 阻燃等级 (0.710 mm) HB UL 94
The time of developing POM in China is almost the same as that of DuPont Company, which is earlier than that of Asahi Cheng Company in Japan. However, after ten years'development, there is a big gap in technology level between China and foreign companies, which is characterized by small scale, high energy consumption, low grade and unstable product quality. In the past, POM in China missed the opportunity of industrialization of R&D achievements due to insufficient development of downstream products, small demand and planned economic system, and so on. At present, POM is only operating in pilot-scale plants, which is bound to be difficult to compete with foreign products. However, it should also be noted that POM has better conditions in terms of self-development technology level, stable operation time of 1000-ton plant and source of raw materials in domestic engineering plastics. Some experts in the industry believe that domestic technology has the ability to construct large-scale plants in some key technological links, but it needs a certain amount of capital investment. The existing production units will run well, and various auxiliary processes will be improved to prepare conditions for the expansion of the plant scale.
From the production process of POM, formaldehyde is used as the
polymerization monomer in homopolymerization. Its chemical
properties are very active, which brings many problems to the
refining and polymerization process. The copolymerization method
uses triformaldehyde as the polymeric monomer. Triformaldehyde is a
stable six-segment ring. Compared with formaldehyde, it is more
convenient to purify and polymerize. So when the process route of
triformaldehyde appears, industry seldom considers formaldehyde as
the polymeric monomer. At present, the copolymerization technology
of triformaldehyde as the polymeric monomer accounts for about the
total of polyformaldehyde in the world. Production capacity.
Homopolyformaldehyde from the properties of resin products of two
processes
Its crystallinity is slightly higher and its physical and
mechanical properties are slightly stronger than that of
copolymerized formaldehyde, but its thermal stability and
acid-alkali corrosion resistance are obviously lower than that of
copolymerized formaldehyde, and its processing temperature range is
narrower, while the conditions of copolymerized formaldehyde
processing and shaping are not as harsh as that of
homopolyformaldehyde. During the processing, less formaldehyde gas
is released from thermal decomposition, which can be recycled
Obviously affect the quality of products, these advantages are
valued and hoped by users.
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