CN113861583B - Preparation method of dummy head skin material suitable for Chinese collision test - Google Patents

Preparation method of dummy head skin material suitable for Chinese collision test Download PDF

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Publication number
CN113861583B
CN113861583B CN202111068290.XA CN202111068290A CN113861583B CN 113861583 B CN113861583 B CN 113861583B CN 202111068290 A CN202111068290 A CN 202111068290A CN 113861583 B CN113861583 B CN 113861583B
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percent
skin material
head skin
chinese
raw materials
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CN113861583A (en
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黄彬兵
许述财
殷绩伟
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Suzhou Qingtai Automobile Safety Technology Co ltd
Suzhou Automotive Research Institute of Tsinghua University
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Suzhou Qingtai Automobile Safety Technology Co ltd
Suzhou Automotive Research Institute of Tsinghua University
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The invention discloses a preparation method of a dummy head skin material suitable for Chinese collision test, which comprises the following steps: weighing all raw materials of the head skin material according to a formula, uniformly mixing, heating a die to 175-185 ℃, then pouring the uniformly mixed raw materials into the heated die, baking, and cooling to prepare the skin material; wherein, the raw materials of the head skin material comprise the following components in percentage by mass: 37.5 to 40.5 percent of polyvinyl chloride resin, 0.1 to 2 percent of calcium carbonate, 47.5 to 50.5 percent of dioctyl terephthalate, 4 to 7 percent of epoxidized soybean oil, 0.5 to 3 percent of antioxidant stabilizer and 3 to 6 percent of oil; the skin prepared by the invention can simulate the head skin characteristics of Chinese, has stable performance, can accurately test the collision test performance data conforming to the Chinese, improves the safety protection performance of the head of the Chinese in the collision process of vehicle accidents, can be used for multiple times, and has better durability.

Description

Preparation method of dummy head skin material suitable for Chinese collision test
The invention relates to a head skin material for a collision test dummy applicable to Chinese and a preparation method thereof, which are divisional applications of Chinese invention patent application with application date of 2019, 12, 11, application number of 2019112638459 and application name of the Chinese invention patent application.
Technical Field
The invention belongs to the technical field of automobile safety, in particular relates to manufacture of a collision test dummy, and particularly relates to a preparation method of a head skin material of the collision test dummy suitable for Chinese.
Background
The collision test dummy is an experimental instrument made of special materials according to the principle of human engineering, and can replace a human body to be used for collision experiments of automobiles, rail transit and the like, so that the injury condition of a real person is simulated. The dummy can simulate the characteristics of human bodies and can be used for multiple times, and the safety performance of vehicles such as vehicles can be improved by using the dummy test.
The existing crash test dummies are mainly Hybrid III and THOR dummies, and the dummies are developed according to the size and biological characteristics of European and American human bodies. The difference (such as the difference of size, weight and biological characteristics) exists between the Chinese human body characteristics and the European and American human body characteristics, which can be reflected in the material performance of the collision test dummy, so that the test data possibly does not conform to the characteristics of the Chinese people if the head skin of the dummy of the European and American is adopted, thereby various designs of the automobile can not be well suitable for the Chinese people, and the potential safety risk is promoted. The head is an important part of a human body, the performance of the skin of the head directly influences the safety protection performance of the head in the collision process, and at present, no formula and technology for manufacturing the skin of the head of a collision test dummy exist in China.
For example, chinese patent No. CN107641271A discloses a collision dummy skin and a preparation process, which is prepared from the following raw materials in parts by weight: 60-80 parts of polyvinyl chloride; 40-20 parts of thermoplastic polyurethane; 10-20 parts of additive; the additive is plasticizer, heat stabilizer, lubricant and reinforcing phase filler; however, the skin characteristics of the head of the Chinese are not designed, and the skin prepared by the skin material is not in accordance with the characteristics of the head skin of the Chinese in the aspects of toughness, ductility, elasticity and the like in actual application, so that the data measured by the skin material is difficult to be suitable for the Chinese, and the safety protection performance of the head in the collision process is directly influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an improved preparation method of the head skin material for the Chinese collision test dummy.
In order to achieve the above purpose, the invention adopts a technical scheme that:
a dummy head skin material suitable for Chinese collision test, wherein the head skin material comprises polyvinyl chloride resin as raw materials, and calcium carbonate, dioctyl terephthalate, epoxidized soybean oil, an antioxidant stabilizer and oil;
wherein, the raw materials comprise the following components in percentage by mass:
according to some preferred aspects of the invention, the raw materials comprise, in mass percent:
according to a further preferred aspect of the present invention, the raw materials comprise, in mass percent:
according to a still further preferred aspect of the present invention, the raw materials comprise, in mass percent:
according to some preferred aspects of the present invention, the paste viscosity of the polyvinyl chloride resin is 2450 to 2550 mPas and the bulk density is 0.20 to 0.40g/ml.
According to some preferred aspects of the invention, the epoxidized soybean oil has an epoxy value of 6.5 to 7.0mol/100 g and an acid value of 0.2 to 0.4 KOH/(mg/g).
According to some preferred aspects of the present invention, the polyvinyl chloride resin, the calcium carbonate, the dioctyl terephthalate and the epoxidized soybean oil are fed in a mass ratio of 1:0.004-0.0052:1.2-1.3:0.13-0.15.
According to some specific and preferred aspects of the invention, the antioxidant stabilizer is SC-72 available from ADK of japan; the oil was purchased from Dari refinement under the trade designation VT KK 151/286-1191.
The invention provides another technical scheme that: the preparation method of the dummy head skin material suitable for the collision test of Chinese people comprises the following steps: weighing the raw materials according to the formula, mixing in a container, heating a die to 175-185 ℃ and keeping the temperature for 20-50min, pouring the uniformly mixed raw materials into the heated die, baking for 20-50min, and cooling to prepare the head skin material of the collision test dummy suitable for Chinese.
According to some preferred aspects of the invention, the mixed raw materials are controlled to be poured into a heated mold without generating bubbles.
According to some specific aspects of the invention, the method for controlling the pouring of the uniformly mixed raw materials into a heated mold without generating bubbles comprises the following steps: slowly pouring the uniformly mixed raw materials into a heated mold, and/or after pouring the uniformly mixed raw materials into the heated mold, shaking the mold to further empty bubbles.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the invention, based on the common skin material polyvinyl chloride resin, the specific content of calcium carbonate, the specific content of dioctyl terephthalate and the specific content of epoxidized soybean oil are innovatively adopted for compounding, and especially the content of polyvinyl chloride and dioctyl terephthalate is controlled within a specific range, so that the prepared head skin material accords with the head skin characteristics of Chinese in the aspects of toughness, ductility, elasticity and the like, and meanwhile, the synthetic acceleration measured through a drop test also accords with the numerical range of the head skin of Chinese, thereby being beneficial to accurately obtaining safety protection test data of the head, especially the head of Chinese, in the collision process of an automobile, and further enabling vehicles designed for Chinese to adopt reasonable data for specific design, and improving the safety protection performance of the head; meanwhile, the utility model can be used for multiple times, and has better durability.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that these examples are presented to illustrate the basic principles, main features and advantages of the present invention, and that the present invention is not limited by the following examples. The implementation conditions employed in the examples may be further adjusted according to specific requirements, and the implementation conditions not specified are generally those in routine experiments. The raw materials used in the examples are all commercially available industrial products.
In the examples which follow, all starting materials are essentially obtained commercially or are prepared by methods conventional in the art, unless otherwise specified.
Example 1
The example provides a dummy head skin material suitable for Chinese collision test, which comprises the following raw materials in percentage by mass:
wherein the polyvinyl chloride resin is PVC paste resin H-24 purchased from Kaneka, and the calcium carbonate is GF-250 purchased from Shanghai river chemical industry; epoxidized soybean oil available from ADK, model 0-130C; antioxidant stabilizer is available from Japanese ADK under the model number SC-72; the oil was purchased from Dari and refined under the trade designation VT KK 151/286-1191.
The preparation method comprises the following steps: weighing the raw materials according to the formula, mixing in a container, heating the mold to 180 ℃ and keeping the temperature for 30min, slowly pouring the uniformly mixed raw materials into the heated mold, shaking the mold after pouring to discharge bubbles, baking for 30min, and cooling to prepare the head skin material of the dummy suitable for collision test of Chinese.
Example 2
The example provides a dummy head skin material suitable for Chinese collision test, which comprises the following raw materials in percentage by mass:
the procedure is as in example 1.
Example 3
The example provides a dummy head skin material suitable for Chinese collision test, which comprises the following raw materials in percentage by mass:
the procedure is as in example 1.
Comparative example 1
Substantially the same as in example 1, the only difference is that: the dioctyl terephthalate is replaced by the usual dioctyl phthalate.
Comparative example 2
Substantially the same as in example 1, the only difference is that: the content of the polyvinyl chloride resin was adjusted to 30.99%, and the content of dioctyl terephthalate was adjusted to 57.12%.
Comparative example 3
Substantially the same as in example 1, the only difference is that: the content of the polyvinyl chloride resin was adjusted to 46.99%, and the content of dioctyl terephthalate was adjusted to 41.12%.
Performance testing
The skin materials obtained in examples 1 to 3 and comparative examples 1 to 3 were subjected to the following performance tests, and the specific results are shown in Table 1.
Scalp test method: reference is made to the relevant test standard for European and American physical sign dummy, namely the test method in Subpart B in the United states Federal regulations 49CFR PART 572.
The skull assembled with the scalp of the collision test dummy is hung on the head falling device, the vertical distance between the forehead position and the surface 376+/-1 mm of the collision, and the vertical distance between the nose tip position and the forehead position is 12.7mm, so that the left and right balance of the head is kept as much as possible. The surface of the falling collision is a smooth and clean horizontal metal surface, the material is a chrome-plated steel plate, and the finish is 2-0.2 mu m. After the scalp-equipped skull suspension is placed in the above position, a drop test is performed, and the data acquired by the triaxial accelerometer installed in the skull is used for reflecting the relevant collision performance of the scalp and the injury value of the head.
TABLE 1
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (7)

1. The preparation method of the dummy head skin material suitable for the collision test of Chinese people is characterized in that the raw materials of the dummy head skin material comprise polyvinyl chloride resin, calcium carbonate, dioctyl terephthalate, epoxidized soybean oil, an antioxidant stabilizer and oil; wherein, the raw materials of the head skin material comprise the following components in percentage by mass: 37.5 to 40.5 percent of polyvinyl chloride resin, 0.1 to 2 percent of calcium carbonate, 47.5 to 50.5 percent of dioctyl terephthalate, 4 to 7 percent of epoxidized soybean oil, 0.5 to 3 percent of antioxidant stabilizer and 3 to 6 percent of oil;
the paste viscosity of the polyvinyl chloride resin is 2450-2550 mPa.s, and the volume density is 0.20-0.40g/mL; the epoxy value of the epoxidized soybean oil is 6.5-7.0mol/100 g, and the acid value is 0.2-0.4 KOH/(mg/g);
the preparation method of the dummy head skin material suitable for the collision test of Chinese comprises the following steps: weighing the raw materials according to the formula, uniformly mixing, heating the die to 175-185 ℃, pouring the uniformly mixed raw materials into the heated die, and shaking the die to control that the uniformly mixed raw materials are poured into the heated die without generating bubbles, baking and cooling to prepare the head skin material of the dummy suitable for the collision test of Chinese.
2. The method for preparing the dummy head skin material for the collision test of Chinese according to claim 1, wherein in the preparation process, the temperature of the die is raised to 175-185 ℃ and then the die is kept for 20-50min.
3. The method for preparing the dummy head skin material for the collision test of Chinese according to claim 1, wherein the baking time is controlled to be 20-50min during the preparation process.
4. The method for preparing the dummy head skin material for the collision test of Chinese according to claim 1, wherein the mass ratio of the polyvinyl chloride resin to the calcium carbonate to the dioctyl terephthalate to the epoxidized soybean oil is 1:0.004-0.0052:1.2-1.3:0.13-0.15.
5. The method for preparing the dummy head skin material suitable for the collision test of Chinese according to claim 1, wherein the head skin material comprises the following raw materials in percentage by mass: 38-40% of polyvinyl chloride resin, 0.1-1% of calcium carbonate, 48-50% of dioctyl terephthalate, 4.5-6.5% of epoxidized soybean oil, 1-2.5% of antioxidant stabilizer and 3.5-5.5% of oil.
6. The method for preparing the dummy head skin material suitable for the collision test of Chinese according to claim 5, wherein the raw materials of the head skin material are as follows in percentage by mass: 38.5 to 39.5 percent of polyvinyl chloride resin, 0.1 to 0.5 percent of calcium carbonate, 48.5 to 49.5 percent of dioctyl terephthalate, 5 to 6 percent of epoxidized soybean oil, 1.2 to 2 percent of antioxidant stabilizer and 4 to 5 percent of oil.
7. The method for preparing the dummy head skin material suitable for the collision test of Chinese according to claim 6, wherein the raw materials of the head skin material are as follows in percentage by mass: 38.6 to 39.2 percent of polyvinyl chloride resin, 0.1 to 0.3 percent of calcium carbonate, 48.8 to 49.3 percent of dioctyl terephthalate, 5.2 to 5.8 percent of epoxidized soybean oil, 1.3 to 1.8 percent of antioxidant stabilizer and 4.3 to 4.9 percent of oil.
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CN113999436B (en) * 2021-11-05 2023-03-31 中汽研汽车检验中心（天津）有限公司 Rubber scalp for collision dummy and manufacturing method
CN114441186B (en) * 2021-12-24 2023-01-31 中国汽车技术研究中心有限公司 Method for manufacturing limb skin layer of dummy for automobile crash test
CN114479311B (en) * 2021-12-24 2023-05-26 清华大学苏州汽车研究院（相城） Rib damping material for Chinese human body sign dummy and application thereof
CN114369319A (en) * 2022-01-14 2022-04-19 北京可维汇众科技发展有限公司 Dummy skin and preparation method thereof
CN115071036B (en) * 2022-07-19 2022-11-25 中国汽车技术研究中心有限公司 Method, device and storage medium for preprocessing raw materials of skin muscle layer of collision dummy

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