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Method for rapid detection of impact performance of automobile modified plastic

A technology of impact performance and detection method, which is applied in the direction of testing the strength of materials with one impact force, and can solve the problems of long time required for health preservation

Inactive Publication Date: 2012-12-19
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems such as the long time required for the maintenance of special modified polypropylene injection parts for automobiles under standard conditions, and proposes a rapid detection method for the impact performance of modified polypropylene under non-standard conditions.

Method used

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  • Method for rapid detection of impact performance of automobile modified plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Mix 40 parts of Daqing Petrochemical Z30S resin, 25 parts of Daqing Petrochemical T30S, and 32 parts of talcum powder in a high-speed mixer for 2 to 5 minutes, and then discharge the mixture. The screw speed of the machine is 200-350r / min, and the barrel temperature is 190-230°C. Injected parts under standard and non-standard conditions, under standard climate conditions with a temperature of (23±2)°C and a relative humidity of (50±6)%, the impact span: (40±2)mm; impact energy : 0.5J~4J; impact velocity: 2.9m / s or 3.8m / s; sample thickness ≥ 4mm or ≥ 2.66mm; ±2°, no less than 6 samples for each group; during the test, the impact blade is aligned with the center of the sample, and the impact blade of the notched sample is aligned with the center of the back of the notch. If pores appear after the sample is damaged, it should be marked and discarded, and another sample should be taken to make up. The impact performance test results are shown in Table 1.

Embodiment 2

[0012] Mix 15 parts of Z30S resin of Daqing Petrochemical, 50 parts of T30S of Daqing Petrochemical, 38 parts of talcum powder, and 7 parts of POE, and mix them with a high-speed mixer for 2 to 5 minutes before discharging. The mixture is extruded and granulated through a twin-screw extruder with a diameter of 30 mm. , the screw speed of the extruder is 200-350r / min, and the barrel temperature is 190-230°C. Injected parts under standard and non-standard conditions, under standard climate conditions with a temperature of (23±2)°C and a relative humidity of (50±6)%, the impact span: (40±2)mm; impact energy : 0.5J~4J; impact velocity: 2.9m / s or 3.8m / s; sample thickness ≥ 4mm or ≥ 2.66mm The impact blade is in contact with the striking surface of the sample, the contact line is perpendicular to the long axis of the sample, and the deviation is not more than ± 2°, no less than 6 samples for each group; during the test, the impact blade is aligned with the center of the sample, and ...

Embodiment 3

[0014] Mix 50 parts of Daqing Petrochemical T30S, 15 parts of Dalian Mankerui Z69S, 38 parts of talcum powder, and 7 parts of POE, and mix them with a high-speed mixer for 2 to 5 minutes before discharging. The mixture is extruded through a twin-screw extruder with a diameter of 30 mm For granulation, the screw speed of the extruder is 200-350r / min, and the barrel temperature is 190-230°C. Injected parts under standard and non-standard conditions, under standard climate conditions with a temperature of (23±2)°C and a relative humidity of (50±6)%, the impact span: (40±2)mm; impact energy : 0.5J~4J; impact velocity: 2.9m / s or 3.8m / s; sample thickness ≥ 4mm or ≥ 2.66mm; ±2°, no less than 6 samples for each group; during the test, the impact blade is aligned with the center of the sample, and the impact blade of the notched sample is aligned with the center of the back of the notch. If pores appear after the sample is damaged, it should be marked and discarded, and another sample...

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Abstract

A method for rapid detection of impact performance of automobile modified plastic is characterized in that maintenance under special conditions is carried out and impact mechanical properties are tested according to an ISO179 standard after a part injection based on standards, wherein an impact span is 40 + / - 2 mm, an impact energy is 0.5 to 4 J, an impact speed is 2.9 to 3.8 m / s and a sample thickness is not less than 4 mm or not less than 2.66 mm. A pendulum is lifted to a predetermined height, samples are put on a support of a testing machine, an impact blade just faces hit centers of the samples, the samples are perpendicular to a center line of the pendulum, and each group has not less than six samples. The method has advantages of simple operation, high detection efficiency, low detection cost and strong reliability, and is suitable for the rapid detection of the impact performance of the automobile modified plastic under non-standard situations.

Description

technical field [0001] The invention discloses a rapid detection method for the impact performance of polypropylene specially used for automobiles. Specifically, it relates to a rapid detection method for impact performance specially used for automotive modified polypropylene materials under non-standard conditions. technical background [0002] The rapid detection method mainly solves the problems such as the long time required for the health of modified polypropylene injection parts for automobiles under standard conditions, and a rapid detection method for the impact properties of modified polypropylene under non-standard conditions is proposed. [0003] With the higher and stricter requirements for product safety performance in the automotive industry, higher requirements are put forward for the high toughness of automotive materials, especially the modification of interior materials such as automotive air-conditioning shells has received more and more attention. Plasti...

Claims

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Application Information

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IPC IPC(8): G01N3/30
Inventor 张艳霞顾武云丹马庆维
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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