A kind of molding process of polystyrene pipe

A technology of polystyrene molding process, which is applied in the field of polystyrene pipe molding technology, can solve the problems of pipe rigidity, flexibility, low stability, and complicated process, so as to improve the comprehensive mechanical properties, simplify the molding process, and reduce the production cost. cost effect

Active Publication Date: 2018-04-20
四川塑金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a forming process for polystyrene pipes, which mainly solves the problems of complex process and low rigidity, flexibility and stability of the pipes in the existing forming process of polystyrene pipes

Method used

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  • A kind of molding process of polystyrene pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] The invention provides a new technology for making polystyrene pipes. The raw materials used include polystyrene recycled crushed material, toughening agent, HDPE (high density polyethylene) crushed material, filler, EBS (ethylene bishard Fatty amide), antioxidant, coupling agent, stearic acid. The ratio of parts of various components is as follows:

[0031] Polystyrene recycled crushed material: 80-90

[0032] Toughener: 2~4

[0033] HDPE broken material: 3~5

[0034] Filling: 4~6

[0035] EBS: 0.2~0.5

[0036] Antioxidant: 0.2~0.5

[0037] Coupling agent: 0.4~3.5

[0038] Stearic acid: 0.2 to 0.5.

[0039] Among the above components, the toughening agent can be SBS or SEBS; the filler can be talcum powder, or it can be obtained by mixing wollastonite and talc powder in a ratio of 1:2.

[0040] The coupling agent is preferably a titanate coupling agent (the addition ratio of titanate is 2%); and the antioxidant is preferably antioxidant 1010.

[0041] Accordin...

example 1

[0052] The various raw materials used in this example have the ratios of parts: polystyrene recycled crushed material: 90 parts, SBS: 2 parts, HDPE crushed material: 3 parts, talcum powder: 4 parts, EBS: 0.2 parts, anti- Oxygen agent: 0.2 parts, coupling agent: 0.4 parts, stearic acid: 0.2 parts.

example 2

[0054] The various raw materials used in this example have the following ratios: polystyrene recycled crushed material: 80 parts, SEBS: 4 parts, HDPE crushed material: 5 parts, wollastonite: 2 parts, talcum powder: 4 parts , EBS: 0.5 parts, antioxidant: 0.5 parts, coupling agent: 3.5 parts, stearic acid: 0.5 parts.

[0055] Table 1 shows the performance comparison of pipes made of special materials obtained from the components of Example 1 and Example 2 with PP pipes and ordinary polystyrene pipes. The comparison parameters also include ring stiffness, deformation, and TIP.

[0056]

[0057] Table 1

[0058] As can be seen from Table 1, compared with PP pipes and common polystyrene pipes, the use of Example 1 and Example 2 of the present invention has obvious advantages in various technical parameters. The TIP value of rigidity (ring stiffness), flexibility (deformation) and drop hammer impact of the polystyrene pipe made by the present invention has been significantly opt...

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Abstract

The invention discloses a molding process of polystyrene pipes, including: (1) cleaning, drying and homogenizing polystyrene recycled materials; (2) breaking polystyrene recycled materials and HDPE materials respectively, and Mix and stir together with the toughening agent; (3) Add EBS, antioxidant and stearic acid in sequence and mix again, and stir again; (4) Add the surface-activated filler and continue stirring; (5) Make the mixture with Extruding in a molten state to obtain a pipe material; (6) extruding the pipe material into a pipe mold; (7) cooling the pipe material in the pipe mold, and then demoulding to form a polystyrene pipe. The invention has reasonable process and convenient operation, greatly improves the comprehensive mechanical properties (rigidity, flexibility, toughness) of polystyrene pipes, effectively reduces the cost of pipe production, and meets the requirements of "health, safety, and environmental protection" for green plastic pipes. Therefore, the present invention is suitable for popularization and application.

Description

technical field [0001] The invention relates to a molding process of polystyrene pipes. Background technique [0002] Stimulated by increasing demand in municipal engineering, construction, agriculture, industry and other industries, the plastic pipe industry has developed rapidly. At present, the most used areas of plastic pipes in my country are mainly urban construction water supply and drainage systems. In recent years, polyethylene pipes (PE), polypropylene pipes (PP), polybutylene pipes (PB), polystyrene pipes (PS) and aluminum-plastic composite pipe (PAP) and other water supply and drainage pipe sales increased rapidly. In 2003, the domestic consumption of plastic pipes in this field reached 300,000 tons, and a complete industrial chain of special pipe materials, pipe processing, and municipal engineering applications has been formed. Many plastic pipe manufacturers have also begun to lean towards municipal engineering. [0003] With the continuous development and pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L23/06C08L53/02C08K13/06C08K9/04C08K5/09C08K3/34C08K5/134
Inventor 吴永刚陈道明
Owner 四川塑金科技有限公司
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