Dummy head skin material suitable for Chinese collision test and preparation method thereof

Abstract

The invention discloses a dummy head skin material suitable for a Chinese collision test. The material comprises the following raw materials in percentage by mass: 37.5%-40.5% of polyvinyl chloride resin, 0.1%-2% of calcium carbonate, 47.5%-50.5% of dioctyl terephthalate, 4%-7% of epoxidized soybean oil, 0.5%-3% of an antioxidant stabilizer and 3%-6% of color oil. The preparation method comprisesthe following steps: weighing the raw materials according to the formula, mixing in a container, heating a mold to 175-185 DEG C, keeping the temperature for 20-50 minutes, then pouring the uniformlymixed raw materials into the heated mold, baking for 20-50 minutes, and cooling to obtain the product. The skin prepared from the material can simulate head skin characteristics of Chinese people andis stable in performance and can accurately test collision test performance data conforming to the Chinese people, improve safety protection performance of the head of the Chinese people in the collision process of vehicle accidents and can be used repeatedly and is good in durability.

Description

technical field [0001] The invention belongs to the technical field of automobile safety, and in particular relates to the manufacture of a crash test dummy, in particular to a head skin material of a crash test dummy suitable for Chinese people and a preparation method thereof. Background technique [0002] The crash test dummy is an experimental instrument made of special materials based on the principles of ergonomics. It can replace the human body for crash experiments on cars and rail transit, thereby simulating the injuries suffered by real people. The dummy can simulate the characteristics of the human body and can be used multiple times. Using the dummy test can improve the safety performance of vehicles and other vehicles. [0003] The existing crash test dummies are mainly Hybrid III and THOR dummies, which are developed according to the human body size and biological characteristics of Europe and America. However, there are differences between Chinese human body ...

AI Technical Summary

Problems solved by technology

However, there are differences between Chinese human body characteristics and European and American human characteristics (such as differences in size, weight, and biological characteristics), which will be reflected in the material properties of crash test dummies. The data does not conform to the characteristics of the Chinese people, so that the various designs of the car cannot be well adapted to the Chinese people, which increases the potential safety risk

The head is an important part of the human body, and the performance of the head skin directly affects the safety protection performance of the head during the collision process. At present, there is no formula and process for the manufacture of the head skin of the crash test dummy in my country.

[0004] For example, the Chinese invention patent CN107641271A, although it discloses a kind of impact dummy skin and its preparation process, it is made of the following raw materials in parts by weight: 60-80 parts of polyvinyl chloride; 40-20 parts of thermoplastic polyurethane; 10-20 parts of additives part; the additives are plasticizers, heat stabilizers, lubricants and reinforcing phase fillers; but they are not designed for the characteristics of the Chinese head skin, reflecting the actual application may exist in the skin made in toughness, The ductility, elasticity, etc. are not in line with the characteristics of Chinese head skin, so the data measured with this skin material will not be applicable to Chinese people, which will directly affect the safety protection performance of the head during the collision.

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