Polypropylene corrugated pipe

A bellows and polypropylene technology, applied in the field of bellows materials, can solve the problems of high cost, insufficient heat resistance, easy cracking, etc. Effect

Inactive Publication Date: 2014-11-12
安徽省宁国新鼎汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, high-density polyethylene is mainly used as the material of bellows, and its cost is relatively high, while polypropylene with lower cost has defects of insufficient heat resistance and easy cracking, which needs to be improved

Method used

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  • Polypropylene corrugated pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of polypropylene bellows proposed in this embodiment is made of the following raw materials in parts by weight:

[0014] Ethylene-propylene copolymer polypropylene: 105 parts; tetrabromobisphenol S bis(2,3-dibromopropyl) ether: 9 parts; antimony trioxide: 5 parts; β-(3,5-di-tert-butyl- 4-Hydroxyphenyl) propionate n-octadecyl ester: 0.35 parts; Dilaurate thiodipropionate: 0.4 parts; Poly(1-hydroxyethyl-2,2,6,6,-tetramethyl -4-hydroxypiperidine) succinate: 0.7 parts; Zinc stearate: 1.0 parts; Calcium stearate: 0.4 parts; Sodium benzoate: 0.2 parts; Pimelic acid / calcium stearate complex: 0.3 share;

[0015] According to the above ratio, prepare the polypropylene corrugated pipe according to the following steps: S1: weigh each raw material by weight; S2: put the raw materials obtained in S1 into a mixer for mixing, and the mixing time is 3.5 minutes ; S3: Add the material mixed in S2 into a twin-screw extruder to extrude and granulate to obtain the corrugated pipe ...

Embodiment 2

[0017] A kind of polypropylene bellows proposed in this embodiment is made of the following raw materials in parts by weight:

[0018] Ethylene-propylene copolymer polypropylene: 110 parts; tetrabromobisphenol S bis(2,3-dibromopropyl) ether: 8 parts; antimony trioxide: 6 parts; β-(3,5-di-tert-butyl- 4-Hydroxyphenyl) propionate n-octadecyl ester: 0.2 parts; Dilaurate thiodipropionate: 0.5 parts; Poly(1-hydroxyethyl-2,2,6,6,-tetramethyl -4-hydroxypiperidine) succinate: 0.6 parts; Zinc stearate: 1.2 parts; Calcium stearate: 0.3 parts; Sodium benzoate: 0.3 parts; Pimelic acid / calcium stearate complex: 0.2 parts share;

[0019] According to the above proportions, the polypropylene corrugated pipe was prepared according to the following steps: S1: weigh each raw material by weight; S2: put the raw materials obtained in S1 into a mixer for mixing, and the mixing time was 5 minutes; S3: Add the material that has been mixed in S2 into a twin-screw extruder to extrude and granulate to...

Embodiment 3

[0021] A kind of polypropylene bellows proposed in this embodiment is made of the following raw materials in parts by weight:

[0022] Ethylene-propylene copolymer polypropylene: 100 parts; tetrabromobisphenol S bis(2,3-dibromopropyl) ether: 10 parts; antimony trioxide: 4 parts; β-(3,5-di-tert-butyl- 4-Hydroxyphenyl) propionate n-octadecyl ester: 0.5 parts; Dilaurate thiodipropionate: 0.3 parts; Poly(1-hydroxyethyl-2,2,6,6,-tetramethyl -4-hydroxypiperidine) succinate: 0.8 parts; Zinc stearate: 0.8 parts; Calcium stearate: 0.5 parts; Sodium benzoate: 0.1 parts; Pimelic acid / calcium stearate complex: 0.4 share;

[0023] According to the above ratio, the polypropylene corrugated pipe was prepared according to the following steps: S1: Weigh each raw material according to parts by weight; S2: Put the raw materials obtained in S1 into a mixer for mixing, and the mixing time is 2 minutes; S3: Add the material that has been mixed in S2 into a twin-screw extruder to extrude and granu...

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Abstract

The invention discloses a polypropylene corrugated pipe which is prepared from the following raw materials in parts by weight: 100-110 parts of ethylene and propylene copolymerized polypropylene, 8-10 parts of tetrabromobisphenol S bi(2, 3-dibromopropyl) ether, 4-6 parts of antimonous oxide, 0.2-0.5 part of beta-octadecyl-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 0.3-0.5 part of dilauryl thiodipropionate, 0.6-0.8 part of poly(1-ethoxyl-2, 2, 6, 6-tetramethyl-4- hydroxypiperidine) succinate, 0.8-1.2 parts of zinc stearate, 0.3-0.5 part of calcium stearate, 0.1-0.3 part of sodium benzoate and 0.2-0.4 part of a pimelic acid/calcium stearate compound. The polypropylene corrugated pipe is prepared by the following steps: mixing raw materials in a mixer for 2 minutes-5 minutes; adding the mixed materials into a twin-screw extruder to be extruded and pelleted to obtain a material of the corrugated pipe; and processing the material of the corrugated pipe.

Description

technical field [0001] The invention belongs to the technical field of bellows materials, in particular to a polypropylene bellows. Background technique [0002] The bellows is a common elastic part, which uses the elasticity of the material to achieve the required function, changes the shape and size of the element under the external load, and returns to the original state when the load is removed, so as to realize the measurement , connection, conversion, compensation, isolation, sealing, shock absorption and other functions. At present, bellows are widely used in automobiles, and bellows for automobiles require materials with good flame retardancy, heat resistance, insulation and toughness. In the prior art, high-density polyethylene is mainly used as the material of the corrugated pipe, and its cost is relatively high, while polypropylene, which is relatively low in cost, has the defects of insufficient heat resistance and easy cracking, which needs to be improved. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K5/136C08K3/22C08K5/134C08K5/372C08K5/098
CPCC08L23/16C08K2201/014C08L2201/02C08L2201/08C08L2203/18C08L67/02C08K13/02C08K5/136C08K3/2279C08K5/1345C08K5/372C08K5/098
Inventor 陈清海陈青山
Owner 安徽省宁国新鼎汽车零部件有限公司
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