Preparation and use method of odor evaluation reference sample block for automotive interior trim part material

Abstract

The invention relates to a preparation method of an odor evaluation reference sample block of an automotive upholstery material. The method comprises the following steps: 1) screening an odor grading team; 2) screening reference sample blocks; 3) grading the reference sample blocks; and 4) mass production of reference sample blocks. According to the method, the accuracy, the stability and the repeatability of the odor grade of the reference sample block are ensured by means of screening of an odor grading team, grading of the reference sample block, stability verification and the like. The smell evaluation reference sample block prepared by the method has good smell representativeness, can better represent the actual smell in the automotive upholstery, and is beneficial for a smell evaluator to give objective smell evaluation. Even for interior trim parts of any smell type, representative actual materials can be found, and reference sample blocks with similar smells can be simulated, so that objective evaluation of smell grades by smell evaluators is facilitated.

Description

Technical field[0001]The present invention relates to the field of odor detection, and more particularly to the preparation and use of an automotive interior material odor evaluation reference sample.Background technique[0002]The air quality problem in the car is increasingly caused by consumers and major host plants. The smell of the car will directly affect the sensory experience of consumers and the evaluation of vehicle quality. According to JDPower (Jun Di) China New Car Quality Research (IQS) report, at its statistics, the number of questions (PP100) per 100 cars (PP100), "There is a unpleasant smell in the car" complaints for 5 consecutive years old new car problem Top list (2015 ~ 2019). In view of the main source of automotive interior parts, how to effectively control the odor of automotive interior parts, it has become a hotspot, key points and difficulties in the automotive industry.[0003]The origin of the odor in the car has been launched in 1992, the German Automotive ...

AI Technical Summary

Problems solved by technology

[0018] 1) The single odor chemical substance solution represented by n-butanol lacks representativeness and practicability as a reference sample for odor training and calibration: First, a large number of actual test data show that even a single-material interior part emits There are generally dozens of types of chemical substances, such as PU polyurethane foam materials, which usually contain more than 50 kinds of chemical substances such as amines, aldehydes, ethers, and phenols; EPDM ternary ethylene propylene rubber material, the chemical substances it emits also contain more than 40 kinds of chemical substances such as phenols, amines, thiazoles, alkanes, etc.

Moreover, the odor chemicals emitted by these interior materials have completely different odor properties from n-butanol solutions, that is, the single odor chemical substance solutions represented by n-butanol solutions are not representative of the odor of automotive interior materials

[0019] Moreover, due to the variety of automotive interior materials and their combinations, such as PP (polypropylene), PC (polycarbonate), PA (nylon), ABS, PU, ​​PET, leather and the instrument panel composed of them, Steering wheels, ceilings, seats, carpets and other parts also have diverse and variable odor properties, and none of the materials or parts have completely similar odor properties to n-butanol. Therefore, n-butanol is used It is extremely limited for odor evaluators to carry out odor training and calibration with solution. It is difficult for the odor evaluators selected under this training system to quickly be competent for the odor evaluation of automotive interior parts. However, due to the characteristics of the sense of smell, it often leads to disputes in the results of odor evaluation

[0020] 2) Directly smelling and distinguishing the odor chemical substance solution has a high risk to the human body and seriously interferes with the human sense of smell. The n-butanol solution is highly irritating and will irritate the eyes, nose, and throat of the human body. Translucent air bubbles will form, headache, dizziness, drowsiness, contact dermatitis can occur if you accidentally touch your hands

In addition, the n-butanol solution has a strong odor and a long-lasting odor. Generally, after evaluating n-butanol, the odor evaluator needs to rest for half an hour before evaluating other odor bottles, which is not conducive to personnel training and odor evaluation work.

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