Comparative Testing of C-type Vs. IC-type Thermal Insulation Strips

The summary report of the comparison about the performance test of IC type thermal insulation strip and C type thermal insulation strip

1.  Background of the project

With advancements in thermal insulation profiles and evolving market demands, new functionalities have been introduced to thermal insulation strips, leading to the development of non-I-type variants. Among these, the C-type insulation strip has emerged, enhancing the waterproofing, dustproofing, and aesthetic properties of traditional I-type strips while maintaining thermal insulation performance.However, despite these added benefits, the C-type strip suffers from structural limitations, particularly a significant reduction in lateral (transverse) tensile strength, which restricts its application scope.To address this issue, Jiangyin Liangyou developed the IC-type thermal insulation strip, which combines the waterproof, dustproof, and aesthetic advantages of the C-type strip while ensuring superior horizontal tensile strength. This innovation represents a key direction in the development of special-shaped thermal insulation profiles.This study aims to compare and validate the transverse tensile performance of IC-type and C-type insulation strips, highlighting the technical advantages of the IC-type design.

2.  Test purpose

2.1 Through the test to understand whether the lateral tensile properties of IC thermal insulation strip is better than one of C-type thermal insulation strip.

2.2 Through the test results to understand whether the horizontal tensile properties of IC thermal insulation strip meet the requirement of GB/T 23615.1-2009.

3.  Test

3.1 Sample source

IC-type heat insulation strips are provided by domestic companies those produce heat insulation strip .

The C-type heat insulation strip is an excellent quality C-shape strip among 8 heat-insulation-strip companies.

3.2 Test participants unit

standard of amendation centers and test sites

3.3 Test Equipment

Electronic universal material testing machine with high temperature

3.4 Test items

Perform horizontal, high-temperature, and low-temperature horizontal tensile tests on IC and C-insulated bars

3.5 Test process

Sampling according to GB/T 23615.1-2009 standard and horizontal and high temperature horizontal tensile strength test.

4.  Test result

4.1 Table 1 lists the tensile strength at room temperature of IC strips and C strips tested by seven participating units.

	1#test unit	2#Test unit	3#Test unit	4#Test unit	5#Test unit	6#Test unit	7#Test unit	average
IC strips	82	69	93	82	78	85	76	81
C strip	27	28	29	30	30	33	21	28
different rate%	204	146	224	174	156	157	272	190

Table 1 Comparison of Tensile Strength at Room Temperature Between IC and C

Test Environment: 23°C  50%RH Test Condition: Drying at 140°C 6H, transverse stretching in room temperature.

4.2 Table 2 lists the high temperature horizontal tensile strengths of IC strips and C strips tested by 7 test units.

		1#test unit	1#test unit	1#test unit	1#test unit	1#test unit	1#test unit	1#test unit	average
IC strip	46		45	51	45	46	45	37	45
C strip	23		20	21	24	22	22.	13	21
Different rate%	100		125	142	89	111	102	174	120

Table II Comparison of high-temperature transverse tensile strength of IC strips and C strips

Test conditions: 90 °C  Test conditions: 140 °C 6H drying, transverse stretching at room temperature

4.3 Table 3 lists the low temperature transverse tensile strengths of IC strips and C strips tested by 7 test units

	1#test unit	2#test unit	3#test unit	4#test unit	5#test unit	6#test unit	7#test unit	average
IC strip	75	75	73	80	65	82	65	74
C strip	15	15	21	14	13	22	11	16
Different rate%	400	400	247	457	415	279	514	387

Table III Comparison of Low-Temperature Tensile Strength of IC Strips and C Strips

Test temperature: -30°C Test conditions: Drying at 140°C6H, transverse stretching at room temperature

5.  Test conclusions

5.1 From the test results, it can be seen that the transverse tensile strength of the IC type thermal insulation strip is better than that of the C type thermal insulation strip.

5.2 Table 1 shows that the horizontal tensile strength data of 6 tested ICs at room temperature meet the requirements of GB/T 23615.1-2009, 1 data is slightly lower than that of GB/T 23615.1-2009, and C indicates tensile strength at room temperature. Neither meet the requirements of GB/T23615.1-2009.

5.3 Table 2 shows that the high temperature horizontal tensile strength data of 6 IC strips tests meet the requirements of GB/T 23615.1-2009, 1 data is lower than the requirements of GB/T 23615.1-2009, and all the data of C type high temperature horizontal tensile strength does not meet the requirements of GB/T23615.1-2009.

5.4 Table 3 shows that the low temperature horizontal tensile strength data of IC strips test meets the requirements of GB/T23615.1-2009, the five data are lower than the requirements of GB/T23615.1-2009, and all data of the C low temperature tensile strength does not meet the requirements of GB/T23615.1-2009.

5.5 The average tensile strength at room temperature of IC strip at room temperature is 1.9 times higher than the tensile strength at room temperature in the transverse direction of C. The average high temperature tensile strength of IC strip is 1.2 times higher than the tensile strength at high temperature of strip C at an average, and the average tensile strength at low temperature of IC strip is C low temperature tensile strength of 3.9 times.

5.6 The development of special-shape heat insulation strips can meet the requirements of new functions and meet the mechanical properties specified in GB/T23615.1-2009.