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Telescopic pipe for automobile and preparation method of telescopic pipe

A technology of telescopic tubes and automobiles, applied in the field of pipes, can solve the problems of low impact strength, heat-resistant hardness, low tensile strength, etc., and achieve good oil resistance

Inactive Publication Date: 2017-03-22
WUXI YONGXING METAL HOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This application aims at the technical problems of low tensile strength, low impact strength, heat resistance and low hardness of the existing telescopic pipes for automobiles, and provides a telescopic pipe for automobiles and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 100 parts of PVC resin, 10 parts of calcium carbonate, 1 part of ABS, 1.5 parts of polyethylene wax, 2 parts of titanium dioxide, 5 parts of MBS, 0.5 parts of methyl tin mercaptide, 4 parts of barium sulfate, and couple 0.1 parts of DOP, 0.5 parts of lead stearate, 25 parts of stainless steel metal powder, 5 parts of dioctyl terephthalate, and 3 parts of cadmium stearate.

[0024] Put PVC resin, calcium carbonate, stainless steel metal powder and dioctyl terephthalate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 80°C, stir for 60 minutes, and the stirring speed is 800 rpm.

[0025] Raise the temperature to 105°C, add the remaining raw materials, mix for 100 minutes, and put it into the twin-screw extruder. The screw speed is 8r / min.

[0026] Shore hardness 85A, bending strength 95MPa, impact strength 55kJ / m 3 ; Vicat softening point 90°C, tensile strength 75MPa; good oil resistance, flame burning time 0.8s, flameless...

Embodiment 2

[0028] Weigh 100 parts of PVC resin, 30 parts of calcium carbonate, 5 parts of ABS, 5.5 parts of polyethylene wax, 6 parts of titanium dioxide, 25 parts of MBS, 4.5 parts of methyl tin mercaptide, 8 parts of barium sulfate, and couple 1 part of agent, 40 parts of DOP, 2.5 parts of lead stearate, 65 parts of stainless steel metal powder, 9 parts of dioctyl terephthalate, and 7 parts of cadmium stearate.

[0029] Put PVC resin, calcium carbonate, stainless steel metal powder and dioctyl terephthalate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 100°C, stir for 80 minutes, and the stirring speed is 1000 rpm.

[0030] Raise the temperature to 115°C, add the remaining raw materials, mix for 120min, and put it into the twin-screw extruder. The screw speed is 9r / min.

[0031] Shore hardness 86A, bending strength 100MPa, impact strength 60kJ / m 3 ; Vicat softening point 100°C, tensile strength 80MPa; good oil resistance, flame burning tim...

Embodiment 3

[0033] Weigh 100 parts of PVC resin, 15 parts of calcium carbonate, 2 parts of ABS, 2.5 parts of polyethylene wax, 3 parts of titanium dioxide, 10 parts of MBS, 1.5 parts of methyl tin mercaptide, 5 parts of barium sulfate, and couple 0.2 parts of DOP, 25 parts of DOP, 1 part of lead stearate, 35 parts of stainless steel metal powder, 6 parts of dioctyl terephthalate, and 4 parts of cadmium stearate.

[0034] Put PVC resin, calcium carbonate, stainless steel metal powder and dioctyl terephthalate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 80°C, stir for 60 minutes, and the stirring speed is 800 rpm.

[0035] Raise the temperature to 105°C, add the remaining raw materials, mix for 100 minutes, and put it into the twin-screw extruder. The screw speed is 8r / min.

[0036] Shore hardness 87A, bending strength 105MPa, impact strength 65kJ / m 3; Vicat softening point 110°C, tensile strength 85MPa; good oil resistance, flame burning tim...

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Abstract

The invention discloses a telescopic pipe for an automobile and a preparation method of the telescopic pipe. According to the method, PVC resin, calcium carbonate, ABS, polyethylene wax, titanium dioxide, MBS, methyl tin mercaptide, barium sulfate, a coupling agent, DOP, lead stearate, stainless steel metal powder, dioctyl terephthalate and cadmium stearate are weighed. The Shore hardness is 85-89 A, the bending strength is 95-115 MPa, the impact strength is 55-75 kJ / m<3>, the Vicat softening point is 90-130 DEG C, and the tensile strength is 75-95 MPa. Oil resistance is good, the time for flaming combustion is 0.4-0.8 second, the time for flameless combustion is 0.01-0.2 second, the breaking elongation is 450-650%, and the telescopic pipe is free of toxicity and healthful. The telescopic pipe is resistant to drop-hammer impact, the impact strength of a gap at -40 DEG C is 5-25 kJ / m<3>, and the telescopic pipe can be widely produced and constantly replace an existing material.

Description

technical field [0001] The invention relates to the field of pipe materials, in particular to a telescopic pipe for automobiles and a preparation method thereof. Background technique [0002] Telescoping tube is a technical term in physics and is located on a pipe with large temperature changes. [0003] It is a protective measure to connect telescopic tubes or bellows to pipelines with large temperature changes. [0004] Because when a solid expands with heat and contracts with cold, although the change in length is not large, it has a huge force on the object that hinders its deformation. The larger the cross-sectional area, the greater the force. For this reason, in terms of engineering technology, the force generated by thermal expansion should be considered first and necessary measures should be taken. For example, a steel bridge must be mounted on a movable support at one end so that the bridge can expand and contract freely. Another example is that when laying r...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L55/02C08L51/04C08K13/02C08K3/26C08K5/58C08K3/30C08K5/098B29C47/92B29C48/92
CPCC08L27/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/014C08L2203/18C08L2205/035C08L55/02C08L51/04C08K13/02C08K2003/265C08K5/58C08K2003/3045C08K5/098
Inventor 王志兴
Owner WUXI YONGXING METAL HOSE
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