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Plastic steel screw

A plastic-steel screw and screw technology, which is applied in the field of plastic-steel screws, can solve problems such as low product quality, environmental pollution, and harm to human health, and achieve the effects of fewer production processes, uniform outer diameter, and wide range of uses for finished products

Inactive Publication Date: 2010-01-20
刘国兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in the whole production process of the metal screw, the technological process is complicated and various, which causes serious pollution to the surrounding environment.
Among them, several picklings are required, and the waste sulfuric acid in the pickling pool will seriously pollute the surrounding environment and endanger human health; the cold galvanizing process will not only produce a large amount of acid pollution, but also produce a large amount of heavy metal pollution. And the organic pollution of additives in the plating solution; in the cold drawing process, there is a lot of dust and noise, and due to the influence of the metal material, the outer diameter of the metal round steel after cold drawing cannot be guaranteed to be uniform, resulting in low product quality

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The engineering plastic can be a flame-retardant acrylonitrile / butadiene / styrene copolymer (flame-retardant ABS). The flame-retardant ABS is based on the basic formula of ABS by adding a flame retardant to achieve a flame-retardant effect. The flame retardants used may be brominated flame retardants, including octabromodiphenyl ether (OBDPO), tetrabromobisphenol A (TBBPA), 1,2-bis(2,4,6-tribromophenoxy) Polybrominated flame retardant compounds such as ethane (BTBPOE).

[0023] Its specific preferred formula one (by mass fraction / %): ABS 74.4%, F-2016 (brominated epoxy resin, 50% bromine) 19.0%, antimony dioxide 6.6%.

[0024] Concrete preferred formula one (by mass fraction / %): ABS 73.6%, cloning 15.9%, polysiloxane surfactant 1.1%, impact modifier (acrylonitrile-butadiene copolymer 27% AN) 3.2%, antimony dioxide 6.2%.

Embodiment 2

[0026] The engineering plastic can be flame-retardant polypropylene (PP), and flame-retardant polypropylene (PP) is based on the basic formula of polypropylene (PP) with an appropriate amount of flame retardant added to improve the flame-retardant effect. The flame retardant used may be chlorinated paraffin, decabromodiphenyl ether, octabromoether, tetrabromobisphenol A (TBBPA), hexabromocyclododecane and the like.

[0027] Its specific preferred formula one (by mass fraction / %): PP 96.25%, decabromodiphenyl ether 3.05%, Sb 2 o 3 0.7%.

[0028] Concrete preferred formula two (by mass fraction / %): PP 88.5%, octabromotrimethylbenzene 6.5%, Sb 2 o 3 5%.

Embodiment 3

[0030] Engineering plastics can be flame-retardant polyamide (nylon PA), and flame-retardant polyamide is based on polyamide (including PA6 and PA66) with an appropriate amount of flame retardant added to improve the flame-retardant effect. The flame retardant used may be a chlorine-containing flame retardant or a bromine-containing flame retardant. Brominated flame retardants include decabromodiphenyl ether (DBDPO), pentabromodiphenyl ether (PBDO), brominated styrene (PDBS) and 1,2-bis(pentabromophenyl)ethane (BPBPE), etc. .

[0031] Its specific preferred formula one (by weight): PA6100, pentabromodiphenyl ether 15.3, antimony dioxide 6.2, polytetrafluoroethylene 1.3.

[0032] Specific preferred formula 2 (by mass fraction / %): PA66 79%, cloning 16%, antimony dioxide 1.4%, zinc oxide 3.6%.

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Abstract

The invention relates to a plastic steel screw made of a thermoplastic plastic material. A manufacturing method comprises the following steps that: a thermoplastic resin material is added into an extrusion molding production line to produce a round bar material; and the round bar material is rolled by a roller and can be packaged to form a finished product. The plastic steel screw has the functions of antirust, acid and alkali anticorrosion and good flexibility and the like which a metal screw does not have. Simultaneously, the plastic steel screw overcomes the defects of difficult processing and complicated and excessive processes of the prior metal screw. The plastic steel screw can be molded once only through the extrusion molding process, has few production process flows, simple production equipment, zero pollution and even thickness of external diameter, can adopt the plastic materials with different properties according to different application requirements, has wide application of a finished product and can meet different requirements of different fields.

Description

technical field [0001] The invention relates to the field of screws used in industries such as building decoration, in particular to plastic-steel screws. Background technique [0002] Because of its special structure, the screw is widely used in building decoration and other industrial fields. The screws currently on the market are all iron screws. Although iron screws have the advantages of good strength and high hardness, they have the disadvantages of being easy to rust, not resistant to acid and alkali, expensive, and high in quality. [0003] Additionally, if figure 1 As shown, the iron screw manufacturing process is responsible and the pollution is serious. The current iron screw manufacturing process is as follows: first, put the construction metal round steel wire in a pickling pool and pickle it with sulfuric acid to remove dirt and rust; then place it on a cold drawing machine for cold drawing; then straighten it through a straightening machine; then Place the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C47/00B29C59/02B29K67/00B29K77/00B29K59/00B29K71/00B29K55/02B29L1/00
Inventor 刘国兴
Owner 刘国兴
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