EEWORLDEEWORLDEEWORLD

Part Number

Search

3M 4949 CIRCLE-0.75"-5

Description
TAPE DBL COAT BLK 3/4" DIA 5/RL
Categoryaccessories   
File Size156KB,6 Pages
Manufacturer3M
Websitehttp://3M.com/esd
Environmental Compliance
Download Datasheet Parametric View All

3M 4949 CIRCLE-0.75"-5 Overview

TAPE DBL COAT BLK 3/4" DIA 5/RL

3M 4949 CIRCLE-0.75"-5 Parametric

Parameter NameAttribute value
Tape typeDouble coated, double sided
Adhesiveacrylic acid
base fabric, carrierPolyester film
thickness0.0450"(45.0 mils,1.143mm)
Thickness - Adhesive0.0430"(43.0 mils,1.092mm)
Thickness - base fabric, carrier0.0020"(2.0 mils,0.051mm)
width0.75" (19.05mm) 3/4" diameter
length-
colorblack
use-
temperature range200°F (93°C) maximum
shelf life24 months
Shelf life start dateShip date
3
3M VHB Tape Durability
TM
TM
Technical Bulletin
Summary
August, 2018
This bulletin addresses the long-term durability of 3M™ VHB™ Tapes and
their ability to perform in certain types of demanding environments. This
will be addressed from a variety of view-points including chemical
composition, resistance to harsh environments, 3M and independent tests
for product durability, and certain applications where 3M™ VHB™ Tape
products have demonstrated excellent ability to perform in demanding
applications. Test results on moisture resistance, UL durability,
accelerated weathering, outdoor weathering, thermal cycling and fatigue
resistance will be discussed.
3M is a technological leader in acrylate pressure sensitive adhesive (PSA)
technology. 3M™ VHB™ Tapes represent examples of 3M’s proprietary,
state-of-the-art chemistry. The long-term aging resistance lies in the
polymer comprising 3M™ VHB™ Tapes. The chemical bonds that make up
the polymer chains consist of carbon-carbon single bonds that are highly
resistant to energy in the form of heat or ultraviolet light, as well as
chemical attack. In less durable foams or adhesives, such conditions could
lead to cleaving of the polymer backbone and thus a weakening of
mechanical properties. In the case of acrylic adhesives and foams,
however, additional crosslinking is chemically favored over chain scission
(cleavage). This means that, rather than undergoing a process of
decomposition, the acrylate materials will tend to build modulus very
slightly over extended exposures. This translates to a stronger, long lasting
bond.
Temperature Exposure
Because of the demanding and diverse applications users have for
3M™ VHB™ Tapes, durability has always been a key interest in the
performance of these products. One of the first issues for tapes is
retention of tack and adhesion after exposure to elevated
temperatures. Bonds made with 3M™ VHB™ Tapes can tolerate
periodic, short- term exposures to temperatures up to 300°F (150°C)
for most Foam Tapes.
Composition
Durability Testing
24V to 16V circuit problem
[u]This voltage value is needed in the project. I used LM317 for the first board, but the voltage dropped when connected to a load. [/u] [u]I want to use MC34063 instead, but the simulation with Prote...
chenbingjy Analog electronics
What is the difference between s3c2410x and s3c2410?
My development board is based on the s3c2410x chip. Is there any difference between this chip and the s3c2410? I checked the information online and it seems that there is no difference....
chengj Embedded System
How to read circuit diagrams: Recommended resources: XVI. Quick start on reading wireless circuit diagrams (I)
[align=center][size=5]How to read circuit diagrams Recommended resources 16. [color=rgb(0, 0, 0)][backcolor=rgb(237, 235, 235)][font=微软雅黑] Quick start guide to reading wireless circuit diagrams (I) [/...
tiankai001 Download Centre
The self-made isp programmer cannot detect it. . . .
[img]http://www.jiangx.net/upload/51 MCU ISP Download Cable.jpg[/img]The schematic diagram is this. . . . [img]http://hiphotos.baidu.com/txz01/pic/item/4301494ca448bee2d62afc39.jpg[/img]This is the is...
kendy630314511 Embedded System
Is there anyone here who does EMS?
I currently have an EMS position in a Fortune 500 company, located in Hangzhou. If anyone is interested, you can add me to MSN: vivi_zhou1227@hotmail.com...
七七零零 Embedded System
Open 1081 Wifi Demos to test EasyLink issues
:Cry: I have been too busy recently... I haven't touched the board for a long time... I'm so sad... Well, let's stop talking nonsense and test the board in the middle of the night. Let's play Wifi Dem...
High哥 RF/Wirelessly

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1296  2680  1679  2269  1440  27  54  34  46  29 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号