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Accelerated determining method for heat-resisting life of plastic material

A technology of plastic materials and measurement methods, applied in thermal analysis of materials, analyzing materials, measuring devices, etc., can solve the problems of shortened material life, material aging and breaking, and achieve the effects of accelerating material aging, saving manpower and material resources, and shortening the development cycle

Inactive Publication Date: 2012-10-03
杭州金州高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many manufacturers of material modification can basically meet people's needs to a certain extent by modifying materials and adding certain additives. However, with the use of products, the material life of products has been shortened until the materials are aged and broken.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Prepare PP samples of washing machine parts (actual parts, standard samples or cutting samples);

[0021] 2) Hang the sample in a ventilated high-temperature accelerated aging box, blast drying box or drying box with a temperature B of 150°C and an air exchange rate of 100 times / H, without stress, to resist heat aging Until the material appears powdered, the aging time T1 is 150H;

[0022] 3) Make sure that the operating temperature A of the sample in actual use is 60℃;

[0023] 4) According to , To determine the service life of the sample at the actual use temperature T2 = 150H× =76800H≈8.9 years;

[0024] This PP sample is used at 60°C and it is expected to be used for 8.9 years, and the material will age.

[0025] At the same time, a long-term durability test was performed on the washing machine component PP at a use temperature of 60°C. As a result, the washing machine component PP was aging after 8.5 years, with an error of less than 5%, which shows that the measuremen...

Embodiment 2

[0027] 1) Prepare PE samples of air-conditioning components;

[0028] 2) Without stress, hang the sample in a ventilating high-temperature accelerated aging box, blast drying box or drying box with temperature B of 120℃ and air exchange rate of 140 times / H, heat-resistant aging Until the material appears powdered, the aging time T1 is 123H;

[0029] 3) Make sure that the operating temperature A of the sample in actual use is 30°C;

[0030] 4) According to , To determine the service life of the sample at the actual use temperature T2 = 123H× =62976H≈7.3 years;

[0031] This PE sample is used at 30°C and is expected to be used for 7.3 years, and the material will age.

[0032] At the same time, the air-conditioning component PE was subjected to a long-term durability test at a use temperature of 30°C. As a result, the air-conditioning component PE was aging after 7.1 years with an error of less than 5%, which shows that the measurement method of the present invention conforms to the ac...

Embodiment 3

[0034] 1) Prepare ABS samples of vacuum cleaner parts;

[0035] 2) Without stress, hang the sample in a ventilated high-temperature accelerated aging box, blast drying box or drying box with a temperature B of 100℃ and a ventilation rate of 120 times / H to resist heat aging Until the material appears powdered, the aging time T1 is 1450H;

[0036] 3) Make sure that the operating temperature A of the sample in actual use is 40℃;

[0037] 4) According to , To determine the service life of the sample at the actual use temperature T2 = 1450H× =92800H≈10.6 years;

[0038] This ABS sample is used at 40°C and it is expected to be used for 10.6 years, and the material will age.

[0039] At the same time, the vacuum cleaner component ABS was subjected to a long-term durability test at a use temperature of 40°C. As a result, the vacuum cleaner component ABS was aging after 10.5 years, and the error was within 5%, which shows that the measurement method of the present invention conforms to the ac...

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Abstract

The invention relates to an accelerated determining method for heat-resisting life of a plastic material and belongs to the technical field of a determining method for service life of a resin material. The accelerated determining method comprises the following processing steps: 1) preparing a sample; 2) hanging the sample under a stress-free condition in an air exchange type high-temperature accelerated aging box, blasting drying box or drying box, heatproof aging till the material enters into powdered state, thereby obtaining aging time; 3) confirming use temperature of the sample under actual use state; and 4) confirming the practical service life of the sample. The accelerated determining method for the heat-resisting life of the plastic material has the beneficial effects that: 1) the long-time durability evaluation of a great quantity of parts is avoided, a material aging process is simulated under a high-temperature condition and the material aging is accelerated, so that the material evaluation period is reduced by above 80%, the developing period of the product is shortened and a great quantity of manpower and material resources are saved, and 2) the material sample can be effectively selected according to the accelerated determining method, the flexibility is high and the defect that large equipment is required for evaluating large parts is overcome.

Description

Technical field [0001] The invention belongs to the technical field of materials measuring methods for the life of resin materials, and in particular relates to an accelerated method for measuring the heat-resistant life of plastic materials. Background technique [0002] Now there are more and more plastic parts. In many fields, plastic products have replaced metal parts. Because plastic products are non-toxic, environmentally friendly, light weight, strong, easy to process, and low cost, they have become the main force in many fields. At present, China's annual plastic products have reached thousands of tons, which shows the status of plastic materials. With the improvement of people's living standards and the development of science and technology, human demand for products is no longer a simple single-function requirement, but is favored and multi-functional. The more functions and performance a certain product has, the more it is liked by people and the easier it is to domi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 王晓群陈家锋黄柯伟
Owner 杭州金州高分子科技有限公司
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