ASTM C1126 - 24 饰面或非饰面硬质蜂窝酚醛隔热材料的标准规范

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Designation: C1126 −24
Standard Speciﬁcation for
Faced or Unfaced Rigid Cellular Phenolic Thermal
Insulation
1
This standard is issued under the ﬁxed designation C1126; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This speciﬁcation covers faced or unfaced, rigid cellular
phenolic thermal insulation. Boards shall be faced or unfaced.
Tubular forms and board cut from a block or bun covered by
this standard shall be unfaced. It does not apply to ﬁeld
expanded cellular phenolic materials.
NOTE 1—If a facer or vapor retarder is to be used for the tubular form
or board, then refer to Practice C921.
1.2 Materials covered by this speciﬁcation are used as roof
insulation; sheathing or rigid board for non-load bearing,
building material applications; and pipe or board insulation cut
from a block or bun for use between −40 and 257°F (−40 and
125°C). Type II and Type III materials with an appropriate
vapor retarder covering on the warm surface are used to a
lower temperature limit of −290°F (−180°C). (See 7.3.)
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
and are not considered standard.
1.4 This speciﬁcation covers closed cell rigid cellular phe-
nolic thermal insulation manufactured using blowing agents
with an ozone depletion potential of 0 (ODP 0).
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
For speciﬁc precautionary statements, see Section 16.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
2
C165 Test Method for Measuring Compressive Properties of
Thermal Insulations
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measure-
ments and Thermal Transmission Properties by Means of
the Guarded-Hot-Plate Apparatus
C209 Test Methods for Cellulosic Fiber Insulating Board
C335/C335M Test Method for Steady-State Heat Transfer
Properties of Pipe Insulation
C390 Practice for Sampling and Acceptance of Thermal
Insulation Lots
C518 Test Method for Steady-State Thermal Transmission
Properties by Means of the Heat Flow Meter Apparatus
C550 Test Method for Measuring Trueness and Squareness
of Rigid Block and Board Thermal Insulation
C585 Practice for Inner and Outer Diameters of Thermal
Insulation for Nominal Sizes of Pipe and Tubing
C921 Practice for Determining the Properties of Jacketing
Materials for Thermal Insulation (Withdrawn 2021)
3
C1045 Practice for Calculating Thermal Transmission Prop-
erties Under Steady-State Conditions
C1058/C1058M Practice for Selecting Temperatures for
Evaluating and Reporting Thermal Properties of Thermal
Insulation
C1303/C1303M Test Method for Predicting Long-Term
Thermal Resistance of Closed-Cell Foam Insulation
C1363 Test Method for Thermal Performance of Building
Materials and Envelope Assemblies by Means of a Hot
Box Apparatus
C1763 Test Method for Water Absorption by Immersion of
Thermal Insulation Materials
D1621 Test Method for Compressive Properties of Rigid
Cellular Plastics
1
This speciﬁcation is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
Organic and Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Sept. 1, 2024. Published October 2024. Originally
approved in 1989. Last previous edition approved in 2019 as C1126 – 19. DOI:
10.1520/C1126-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. For Annual Book of
ASTM Standards volume information, refer to the standard’s Document Summary
page on the ASTM website.
3
The last approved version of this historical standard is referenced on
www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

D1622 Test Method for Apparent Density of Rigid Cellular
Plastics
D1623 Test Method for Tensile and Tensile Adhesion Prop-
erties of Rigid Cellular Plastics
D2126 Test Method for Response of Rigid Cellular Plastics
to Thermal and Humid Aging
D6226 Test Method for Open Cell Content of Rigid Cellular
Plastics
E84 Test Method for Surface Burning Characteristics of
Building Materials
E96/E96M Test Methods for Gravimetric Determination of
Water Vapor Transmission Rate of Materials
3. Terminology
3.1 The deﬁnitions and terms in Terminology C168 shall
apply to this speciﬁcation.
3.2 Deﬁnitions of Terms Speciﬁc to This Standard:
3.2.1 foam core—rigid cellular thermal installation without
any facers or barriers on the surface of the installation.
3.2.2 closed cell material—foam where more than 90 % of
the cells are totally enclosed by cell walls, and not intercon-
nected with other cells.
3.2.3 open cell material—foam whose cells are not totally
enclosed by its walls and therefore exhibits a predominance of
interconnecting cells.
3.2.4 ozone depletion potential (ODP)—a relative index
indicating the extent to which a chemical product causes ozone
depletion.
3.2.4.1 Discussion—The reference level of 1 is the potential
of trichloroﬂuoromethane (R-11 or CFC-11) to cause ozone
depletion. ODP 0 is an ozone depletion potential of zero.
4. Classiﬁcation
4.1 The thermal insulation shall be of the following types:
4.1.1 Type I—For use as roof insulation board. Produced
without integral vapor retarder facers.
4.1.2 Type II—For use as sheathing or rigid panel for
non-load bearing applications. Produced with integral vapor
retarder facers.
4.1.3 Type III—For use as pipe insulation. Produced without
integral vapor retarder facers.
4.1.3.1 Type III, grade 1—Density, min 2 lbs/ft
3
4.1.3.2 Type III, grade 2—Density, min 3.75 lbs/ft
3
4.1.3.3 Type III, grade 3—Density, min 5 lbs/ft
3
4.1.3.4 Type III, grade 4—Density, min 7.5 lbs/ft
3
5. Ordering Information
5.1 Orders for materials purchased under this speciﬁcation
shall include the following information:
5.1.1 Designation of this speciﬁcation.
5.1.2 Product name and type.
5.1.3 Size and dimensions.
5.1.4 Quantity of material.
5.1.5 Special requirements for inspection and/or testing.
5.1.6 Pipe insulation jacketing (optional).
6. Materials and Manufacture
6.1 Foam Core Chemical Composition—The foam shall be
produced by a chemical reaction of a phenolic resin, surfactant,
blowing agent, and other additives as needed.
6.2 Facings—Facing on Type II material shall be adhered to
the core stock and suitable for the service intended. They shall
be supplied as agreed upon between manufacturer and pur-
chaser.
7. Physical Properties
7.1 The material shall conform to the requirements as
shown in Table 1 and Table 2.
7.2 The Type III higher density material shall conform to the
requirements as shown in Table 2.
7.3 Not all physical properties at temperatures below −40°F
(−40°C) have been fully tested, and the user shall consult the
manufacturer for any properties and performance required at
these lower temperatures.
8. Dimensions and Tolerances
8.1 Dimensions—The dimensions shall be as agreed upon
between the purchaser and the supplier, but commonly shall be
as follows:
8.1.1 Type I—Width, 24 in., 36 in., or 48 in. (610 mm, 915
mm, or 1220 mm). Length, 48 in. or larger (1220 mm or
larger).
8.1.2 Type II—Width, 48 in. (1220 mm). Length, 96 in. or
larger (2440 mm or larger).
8.1.3 Type III—Pipe insulation with dimensions that are in
accordance with Practice C585.
8.2 Tolerances—Unless otherwise agreed upon between the
purchaser and the supplier, the tolerances shall be as follows:
8.2.1 Types I and II— When measured at 73.4 63.6°F (23
62°C) and 50 65 % relative humidity, these types shall
conform to the following:
8.2.1.1 Length—Not to exceed 6
1
⁄
4
in. (66.4 mm).
8.2.1.2 Width—Not to exceed 6
1
⁄
4
in. (66.4 mm).
8.2.1.3 Thickness—Not to exceed 6
1
⁄
8
in. (63.1 mm).
8.2.2 Type III—Thicknesses available for various pipe and
tube sizes shall be in accordance with Practice C585. The
average measured length shall not differ from the standard
dimension of the manufacturer by more than 6
1
⁄
4
in. (6.4 mm).
8.3 Other Parameters for Types I and II:
8.3.1 Squareness—Board squareness shall be within re-
quired tolerance if the two diagonal measurements of the board
differ by no more than
1
⁄
4
in. (6.4 mm).
8.3.2 Straightness—Unless otherwise speciﬁed, the boards
shall be furnished with straight edges which shall not deviate
by more than
1
⁄
32
in./ft (2.6 mm/m).
8.3.3 Flatness—The boards shall not depart from absolute
ﬂatness by more than
1
⁄
16
in./ft of width or length (5.2 mm/m).
8.3.4 The straightness and ﬂatness shall be determined in
accordance with Practice C550, except that a straight edge
longer than the dimension being determined shall be used.
C1126 − 24
2

9. Workmanship, Finish, and Appearance

9.1 The insulation shall have no defects that adversely affect

its service qualities.

10. Qualiﬁcation Requirements

10.1 For the purpose of initial material or product

qualiﬁcation, each Type of insulation shall meet the applicable

test results of Table 1 and Table 2.

10.2 Acceptance qualiﬁcation for lots and shipments of

qualiﬁed product shall be agreed upon by purchaser and

supplier.

10.3 When it is anticipated that phenolic foam will be in

direct contact with metal, the foam supplier shall provide the

proper installation procedure. In some cases, type 1 phenolic

foams contain some compounds which promote corrosion in

the presence of liquid water. There are currently no directly

applicable ASTM corrosion tests for phenolic foams. An

attempt will be made to develop a meaningful corrosion test

and will be incorporated into the standard when it becomes

available.

11. Sampling

11.1 Unless otherwise speciﬁed in the purchase order or

contract, sampling shall be in accordance with Practice C390.

12. Specimen Preparation

12.1 Unless otherwise speciﬁed in the test procedure, all

tests shall be made on specimens conditioned at least 24 h at

73.4 63.6°F (23 62°C) and 50 65 % relative humidity.

12.2 All Type II test specimen have facers present and Type

I and Type III test specimens are foam core samples except

where otherwise indicated.

12.3 All cut edges shall be smooth and free of any mechani-

cal damage which would affect test results.

TABLE 1 Physical Property Requirements

NOTE 1—As Type II insulation is produced with integral vapor retarder facers, the orientation of the facer is important in preventing moisture

penetration into the insulation and the water vapor permeance of the Type II faced insulation is valid as long as the facer does not fail.

Property Unit Type I Type II

Density, min lbs/ft

(kg ⁄m

) N/A

2 (32)

Compressive resistance, min (faced or unfaced) at 10 %

deformation or yield whichever occurs ﬁrst

psi (kPa) 16 (108) 18 (124)

Closed cell content minimum % % 90 90

Tensile strength, min (faced) psf (Pa) 150 (7180) N/A

Apparent Thermal Btu·in./h·ft

·°F (W/mK)

Conductivity, max

(foam core):

−250°F (−157°C) mean temp. N/A

0.12 (0.017)

−200°F (−129°C) mean temp. N/A

0.13 (0.018)

−150°F (−101°C) mean temp. N/A

0.14 (0.019)

−100°F (−73°C) mean temp. N/A

0.15 (0.021)

−50°F (−46°C) mean temp. N/A

0.15 (0.021)

−0°F (−17°C) mean temp. N/A

0.15 (0.021)

40°F (4°C) mean temp. 0.16 (0.022) 0.15 (0.021)

75°F (24°C) mean temp. 0.17 (0.025) 0.15 (0.021)

110°F (43°C) mean temp. 0.19 (0.028) 0.17 (0.024)

150°F (65°C) mean temp. N/A

N/A

200°F (93°C) mean temp. N/A

N/A

Dimensional stability, 1 week

% lin chg, max

Exposure (foam core):

257 ± 4°F (125 ± 2°C), ambient RH N/A

N/A

-40 ± 6°F (−40 ± 3°C), ambient RH 2 2

158 ± 4°F (70 ± 2°C), 97 ± 3 % RH 2 2

Water absorption, max, (foam core): % by volume 3.0 3.0

Water vapor permeance, perms, (facer only) grains/h·ft

·in.·Hg

(ng/s·m

·Pa)

#1.0 (57)

Water vapor permeability, max, perm-in. (foam core) Perm-inch (ng/s·m·Pa) 5.0 (7.2) 5.0 (7.2)

Flame spread index, max

F,G

(foam core) 25 25

Smoke developed index, max

F,G

(foam core) 50 50

N/A = not applicable.

Apparent Thermal Conductivity tests shall be used for classiﬁcation purposes only. The thermal conductivity values shown in this table were obtained using Test Method

C518 or C177.

Dimensional stability data at lower temperature will be added when testing is complete.

No minimum or maximum values are required for Type I material. It is expected roof design will reﬂect actual building and environmental conditions. Under certain

circumstances a vapor retarder is required.

Consult manufacturer for certain application in cold climates where greater permeance values are desirable.

This standard is used to measure and describe the response of materials, products, or assemblies to heat and ﬂame under controlled conditions, but does not by itself

incorporate all factors required for ﬁre-hazard or ﬁre-risk assessment of the materials, products, or assemblies under the actual ﬁre conditions.

In some cases facings used on composite products cause the ﬂame spread index and smoke developed index of the composite to be signiﬁcantly different than those

of the foam core itself.

C1126 − 24

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本页面提供 ASTM C1126 - 24 标准规范的完整内容解读，该标准规范了饰面或非饰面硬质蜂窝酚醛隔热材料的性能要求、测试方法与认证标准。作为建筑与工业隔热领域的重要参考，ASTM C1126 适用于高温环境下具有优异阻燃性与低烟毒性表现的酚醛泡沫板，广泛应用于暖通管道、冷库、洁净室及屋面隔热系统。了解该规范有助于工程师与采购人员确认材料的导热系数、压缩强度、尺寸稳定性及表面燃烧特性，确保选材符合国际防火安全标准与节能规范。页面同步更新最新修订版本与测试流程指南，为项目方案设计与合规审查提

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