NFPA701：2004 Fire Tests for Flame Propagation 方法介绍

李新

<P>NFPA 701：2004 Fire Tests for Flame Propagation of Textiles and Films </P>
<P>Method 1： </P>
<P>Scope：</P>
<P>（1）Table Skirts</P>
<P>&nbsp;(2) Table Linens </P>
& e: u# E5 x: n7 N5 O2 A( g" x6 J<P>(3) Display booth separators </P>
<P>(4) Textile wall hangings Not apply to the specimens having an areal density greater than 700g/m2 (21 oz/yd2) Not apply to the Vinyl-coated fabric. </P>
<P>Method 2: Apply to the specimens having an areal density greater than 700g/m2 (21 oz/yd2) Apply to the Vinyl-coated fabric. </P>
0 u0 x  O" D- R- w' P( I% V<P>Apply to the plastic films. If the sample is claimed to durability to cleaning or weathering, then Original sample and the cleaned or weathered sample should be tested for flame propagation. </P>
4 D+ i: O- k2 v+ Y5 a, l6 ]<P>Method 1: NFPA701 Method 1:2004 　</P>
<P>Sample size 　Lead time 　Unit price (RMB) </P>
) U2 t  F5 o( S3 ^<P>initial 1.5m *full width 5 working days After 5 washes 1.5m *full width 7 working days After 3 dry cleanings 1.5m *full width 7 working days After accelerated water leaching 1.5m *full width 8 working days </P>
/ Z# [8 ]# I/ Z% O* l3 D<P>Specimen: 400*150mm *10 pcs The specimen is vertically hanged. The specified gas flame shall be applied to the center of the lower edge of the specimen for 45 seconds. </P>
& @7 F! H* E  J1 x<P>Criteria: </P>
<P>(1) The fragments and residues that fall to the floor of the test chamber shall not continue to burn for more than an average of 2 seconds. </P>
<P>(2) The average weight loss of the 10 specimens in a sample shall be 40 percent or less. Method 2: NFPA701 Method 2:2004 　</P>
<P>Sample size 　Lead time 　Unit price (RMB) initial 3m *full width 5 working days 850 After 5 washes 3m *full width 7 working days 1350 After 3 dry cleanings 3m *full width 7 working days 1300 After accelerated water leaching 3m *full width 8 working days 1800 Specimen: Flat sheet : 125*1200mm * 10 pcs Foldable: 610 *1200mm *4 pcs Fail </P>
9 S7 G& H7 m7 W  H# h0 ?<P>Criteria: (1) When any specimen continues flaming for more than 2 seconds after the test flame is removed from contact with the specimen, the material shall be recorded as having failed the test.</P>
7 p9 B6 Z8 M+ X+ Z) S  r<P>&nbsp;(2) When the length of char of any individual folded specimen exceeds 1050 mm, the material shall be recorded as having failed the test. </P>
" `" y" L" ^8 ?9 a! @( @<P>(3) When the char length of any single flat specimen exceeds 435mm, the material shall be recorded as having failed the test. </P>
<P>(4) The fragments and residues that fall to the floor of the test chamber shall not continue to burn for more than 2 seconds. </P>