ASTM RR-C16-1038 2012

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This Research Report is issued under the fixed designation RR: C16-1038. You agree not to reproduce or circulate or quote, in whole or

part, this document outside of ASTM International Committee/Society activities, or submit it to any other organization or standards

body (whether national, international or other) except with the approval of the Chairman of the Committee having jurisdiction and the

written authorization of the President of the Society. If you do not agree to these conditions, please immediately destroy all copies of

1 May 2012

Committee C16 on Thermal Insulation

Subcommittee C16.30 on Thermal Measurement

Research Report C16-1038

Interlaboratory Study to Establish Precision Statements for ASTM

C1303-12, Test Method for Predicting Long-Term Thermal Resistance

of Closed-Cell Foam Insulation

Technical contact:

Michel Drouin,

2604 Blvd Perrot

DORION, QC J7V-8P4

DROUINM@VIDEOTRON.CA

ASTM International

100 Barr Harbor Drive

West Conshohocken, PA 19428-2959

RR: C16-1038

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1. Introduction:

Interlaboratory Study 404 was conducted to establish a precision statement for C1303,

Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam

Insulation using the Prescriptive Approach.

The data for this Interlaboratory Study 404 came from a round robin that started

in 2002 to determine the bias of the thin slicing procedure to predict long term

thermal resistance (LTTR), described in the Annex of ASTM C1289-02

Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation

Board. In addition to what is required by the Specification C1289 Annex,

additional measurements were made that allowed the application of the

Prescriptive Method of C1303.

See ASTM Research Report C16-1035 for complete information about the inter

laboratory test study for LTTR test procedure included in ASTM C1289-02

Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board

2. Test Method:

The Test Method used for this ILS is C1303-12. To obtain a copy of C1303, go to

ASTM’s website, www.astm.org, or contact ASTM Customer Service by phone at 610-

832-9585 (8:30 a.m. - 4:30 p.m. Eastern U.S. Standard Time, Monday through Friday) or

by email at service@astm.org.

3. Participating Laboratories:

Two manufacturers located in Canada supplied the products. Two laboratories

independent of the industry were included (Bodycote Testing Group and Oak Ridge

National Laboratory - ORNL). 13 participating laboratories were initially part of the

testing program (see in Annex D the complete list of participants and contact names at

the time the study was started). Two laboratories never supplied any data and one lost the

samples and stopped sending data after about one year into the program. Finally, one

laboratory lost the samples for the 5-year measurement, but supplied all the required data

up to that time.

4. Description of Samples:

The study used three polyisocyanurate thermal insulation products (1.0, 2.0 and 3.0 inch)

from two different manufacturers. These products were ASTM C1289 Type II, Class 1,

Grade 2. Only third generation blowing agents were used to make the products.

All three products from each supplier were manufactured within a three-week period

using the same raw materials. Products were made with typical glass fiber reinforced

cellulosic felt as the facer. This facer is permeable to gas exchange.

From each manufacturer, seven 4 ft x 4 ft polyiso boards 2.0 inch thick with a permeable

facer were shipped to the 13 participants. About two weeks later, four 4 ft x 4 ft boards

1.0 inch thick, and four 4 ft x 4 ft boards 3.0 inch thick of the same type as the 2.0 inch

were also shipped. The boards were marked with the machine direction. It was requested

to store products as required in section A1.7.3 of the ASTM C1289-02 Annex (i.e. 73

+5oF and 50 +20% relative humidity).

RR: C16-1038

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5. Interlaboratory Study Instructions

Laboratory participants were emailed the test program instructions. For a copy of the

instructions, please see Annex A.

6. Description of Equipment/Apparatus1:

For information on the equipment/apparatus used by each laboratory, please see Annex

7. Data Report Forms:

Each laboratory was provided with a data report form for the collection of data.

The 13 participants signed a confidentiality agreement. This agreement stipulates that

all results, documents, and records of the testing done will be held strictly

confidential, will not be used for commercial comparative purposes nor will they

be released to, nor discussed with, any third party. The complete raw database of

thermal resistance results of the Round Robin will remain confidential to PIMA.

8. Statistical Data Summary:

A summary of the statistics calculated from the data returned by the participating

laboratories is provided in Annex C.

9. Precision and Bias Statement:

9.6 A round robin was started in 2002 to determine the bias of the thin slicing

procedure described in the Annex of Specification C1289 on polyisocyanurate foam

insulation. Two manufacturers supplied products and the study involved 10 participating

laboratories. These products were ASTM C1289 Type II, Class 1, Grade 2, made with

typical glass fiber reinforced cellulosic felt as the facer. This facer is permeable to gas

exchange. Separate stacks of core and surfaces slices with a thickness of 10 mm [0.4 in]

were used in the study. The slices were prepared from 50.8 mm [2.0 in.] product. Three

full thickness products at 25.4 mm [1.0 in.], 50.8 mm [2.0 in.] and 76.2 mm [3.0 in.] were

also included in the study and their thermal resistance was measured every year. After

five years, bias results were calculated by comparing the predictions made from thin

slices to the thermal resistance of the three full thickness products aged in laboratory

conditions. In addition to what is required by the Specification C1289 Annex, additional

measurements were made that allowed the application of the Prescriptive Method in

C1303 with the following exceptions: the homogeneity and alternate thickness

applicability criteria were not tested, some of the measurements were made within three

to five days of the required date (exceeds C1303 prescriptive limits), some slices from a

few labs did not meet the thickness uniformity criteria, and only surface and core slice

stacks were measured. Despite these deviations from the prescriptive method, the results

1 The equipment listed was used to develop a precision statement for C1303-12. This listing is not an

endorsement or certification by ASTM International.

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摘要：

ASTM RR-C16-1038 2012 是美国材料与试验协会发布的一项研究报告（Research Report），该报告专注于耐火材料与隔热材料领域，旨在提供与 C16 委员会相关标准制定或修订过程中所依据的实验数据、检测结果及技术分析。该文档虽然不等同于正式标准，但为 C16 标准体系（如绝缘材料、耐火砖、轻质保温制品等）的验证、修订和合理应用提供了重要的原始数据支撑。对于从事高温工业、窑炉建造、隔热工程设计以及材料性能测试的专业人士而言，ASTM RR-C16-1038 2012 是理解

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