| 品牌 |
信越 |
型号 |
硅橡胶 |
| 硬化/固化方式 |
湿固化胶粘剂 |
主要粘料类型 |
合成弹性体 |
| 基材 |
透明无机材料 |
物理形态 |
膏状型 |
| 产地 |
中国 |
|
| 粘合材料类型:塑料类,橡胶类,金属类,其他 | 有效物质≥:90（％） |
| 剪切强度:3000（mpa） | 规格尺寸:2（mm） |
| 保质期:24（个月） | 执行标准:coc |
| cas:sgs |
乐泰5248硅橡胶
医用胶粘剂
基本性能
外观透明度/颜色：半透明/淡黄色
固化类型：紫外线，湿气固化
适用基材：弹性体，金属，玻璃
粘度：50000
温度范围：-53°c到149°c
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product deion
loctite® product 5248 is a single component ultraviolet
(u.v.) light and moisture curable thixotropic silicone sealant.
upon exposure to u.v. light or atmospheric moisture this
product cures to form a durable, flexible rubber sealant.
typical applications
used for gasketing and sealing applications, especially for
medical device applications. loctite 5248 has usp class vi
certification. suitable for use in assembly of disposable
medical devices.
properties of uncured material
typical
value range
chemical type modified alkoxy
silicone
appearance clear, translucent
paste
specific gravity @ 25°c 1.02
viscosity @ 25°c, mpa.s (cp)
brookfield rvt
spindle 6 @ 2.5 rpm 65,000 50,000 to 80,000
flash point (tcc), °c >100
typical curing performance
normal processing conditions will include exposure to
sufficient uv light irradiance to effectively cure the material.
surface and/or atmospheric moisture will influence the cure
of shadowed regions. although functional strength is
developed almost instantly due to the uv curing nature of
this product, full performance properties will develop over 72
hours.
surface cure
when curing with sufficient uv light irradiance, exposed
material will cure dry to the touch in seconds. atmospheric
moisture controls the cure of material not exposed to uv
light. typically, non-uv light cured areas will skin over in
approximately 11 minutes and become tack free in 14
minutes.
uv light vs. moisture cure
it is important to state that functional strength or
performance is achieved very rapidly due to the uv light
curing nature of this product. however, full performance
properties are developed over a period of 72 hours. the
table below lists the difference in three key physical
properties between uv light only and moisture only cure
parameters.
(% of full cure values)
a. uv cure only b. moisture cure only
hardness durometer 7 60
tensile strength, psi 37 100
elongation, % 75 150
a. 40 mw/cm2 for 60 seconds/side
b. 7 days room temperature, 50% r.h. (no uv exposure)
general information
this product is not recommended for use in pure
oxygen and/or oxygen rich systems and should not be
selected as a sealant for chlorine or other strong
oxidising materials.
approvals
product 5248 has been granted usp class vi certification
which makes it particularly suited for use in disposable
medical device assemblies.
directions for use
for best performance surfaces should be clean and free of
grease or other contaminants. the product is designed to
be initially cured with uv light at a minimum irradiance of
30mw/cm2 for approximately 20 seconds. functional
strength is achieved almost instantly. full performance
properties will develop over 72 hours. moisture curing
begins immediately after the product is exposed to the
atmosphere, therefore parts to be assembled should be
mated within a few minutes after the product is dispensed.
excess material can be easily wiped away with non-polar
solvents.
storage
product shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8°c to 28°c
(46°f to 82°f) unless otherwise labelled. optimal storage is
at the lower half of this temperature range.
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