EEWORLDEEWORLDEEWORLD

Part Number

Search

3M 4646 CIRCLE-0.75"-250

Description
TAPE DBL COAT GRY 3/4" DIA 250PK
Categoryaccessories   
File Size156KB,6 Pages
Manufacturer3M
Websitehttp://3M.com/esd
Environmental Compliance
Download Datasheet Parametric View All

3M 4646 CIRCLE-0.75"-250 Overview

TAPE DBL COAT GRY 3/4" DIA 250PK

3M 4646 CIRCLE-0.75"-250 Parametric

Parameter NameAttribute value
Tape typeDouble coated, double sided
AdhesivePressure Sensitive Adhesive (PSA)
base fabric, carrieracrylic foam
thickness0.0250" (25 mil, 0.635mm)
Thickness - Adhesive-
Thickness - base fabric, carrier-
width0.75" (19.05mm) 3/4" diameter
length-
colorgrey
useUniversal
temperature range300°F(149°C)
Shelf life start dateShip date
shelf life24 months
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
Questions about CASIOdt-930m51e
Does anyone have this model of compiler? I can't find the help document!...
kids Embedded System
Oh, the almighty altar, look at what this is made of?
The blue light of the KF750 key is multiple circles stacked, and there is a "ripple" effect when touched. Today, a customer wanted to make the original ordinary key into this effect on a product. It i...
zhuxl DIY/Open Source Hardware
What is the temperature measurement range of thermistor?
Can anyone tell me the temperature range of thermistor? Thank you....
猪猪 Test/Measurement
Experts help with LED programming
org 00h start: mov a, #00h mov p0, a mov p2, a display: mov r0, #2 mov 30H, #00h scan_sets: mov r1, #00h mov r2, #0ffh dis_sets: mov r3, #32 mov r4 , 30h dis_char: call load inc r1 djnz r3, dis_char m...
罗达爷 51mcu
13 Electronic Games Ask for Advice
[i=s] This post was last edited by paulhyde on 2014-9-15 03:35 [/i] Will Renesas chips be mandatory? ? Are sensor modules purchased online allowed in the e-sports competition? Or do I have to solder t...
kun7809 Electronics Design Contest
Share your thoughts! Tell us how you learned to write driver programs! Give me some advice!
The driver seems so complicated! I don't know where to start. I spent the whole afternoon reading the serial port layered driver source code and it's overwhelming! I hope someone with experience can g...
proudsky Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2467  1137  1043  745  524  50  23  21  15  11 
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