Method for producing plastic pipe fitting with insert made from polyphenylene sulfide alloy material

A technology for polyphenylene sulfide and plastic pipe fittings, which is applied in the field of building materials, can solve the problems of layered water leakage, large difference in expansion coefficient, complicated processing technology, etc. Effect

Inactive Publication Date: 2008-10-01
GUANGZHOU SUPER DRAGON ENG PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inserts in the current plastic pipe fittings are basically made of metal copper, that is, the metal copper rods are used as materials and made through five machining processes such as blanking, rough turning, fine turning, turning and milling. The connection between fittings and plastic pipe fittings is integrated by one-time injection molding (insert molding). The use of copper to make inserts for plastic pipe fittings has disadvantages such as large proportion, high production cost, low efficiency and complicated processing technology. Copper is an inorganic metal material and plastic pipe fittings are organic polymer materials, so the adhesion between the two is poor, and the pipe fittings are prone to leak at the junction of the pipe fitting and the insert under the action of external force
In addition, due to the large difference in the linear expansion coefficient between the copper insert and the plastic pipe fitting, when the ambient temperature difference changes greatly, it is easy to delaminate and leak water at the junction of the pipe fitting and the insert
In addition, due to the different linear expansion coefficients of copper inserts and plastic pipe fittings, when the ambient temperature difference changes greatly, it is easy to delaminate and leak water at the junction of pipe fittings and inserts

Method used

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  • Method for producing plastic pipe fitting with insert made from polyphenylene sulfide alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for manufacturing a plastic pipe fitting with a polyphenylene sulfide alloy material insert, which can be manufactured by the following method:

[0031] A: The production method of polyphenylene sulfide composite material, which consists of the following components, by weight percentage:

[0032] Polyphenylene sulfide 60%; polypropylene graft 8%; polypropylene 5%; nylon 10%; filler 15%; coupling agent 1%; antioxidant 1%;

[0033] Dry polyphenylene sulfide at 140°C for 5 hours; dry nylon at 90°C for 6 hours, add and mix polypropylene grafts, polypropylene, fillers, coupling agents, and antioxidants accurately After mixing in the machine for 20 minutes, add the twin-screw extrusion granulator; through the twin-screw extrusion granulator, add glass fiber into the glass fiber port to fully melt and plasticize extrusion, stranding, cooling, pelletizing, and homogenization Made of polyphenylene sulfide composite material;

[0034] B: Inject the polyphenylene sulfid...

Embodiment 2

[0045] A method for manufacturing a plastic pipe fitting with a polyphenylene sulfide alloy material insert, which can be manufactured by the following method:

[0046] A: The production method of polyphenylene sulfide composite material, which consists of the following components, by weight percentage:

[0047] Polyphenylene sulfide 50%; polypropylene graft 5%; polypropylene 5%; nylon 15%; filler 22%; coupling agent 2%; antioxidant 1%;

[0048] Dry polyphenylene sulfide at 140°C for 3 hours; dry nylon at 85°C for 5 hours, add and mix polypropylene grafts, polypropylene, fillers, coupling agents, and antioxidants accurately After mixing in the machine for 10 minutes, add the twin-screw extrusion granulator; through the twin-screw extrusion granulator, add glass fiber into the glass fiber port to fully melt and plasticize extrusion, stranding, cooling, pelletizing, and homogenization Made of polyphenylene sulfide composite material;

[0049] B: Inject the polyphenylene sulfid...

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Abstract

The invention relates to a method for making a plastic pipe with an insert made from a PPS alloy material. Materials such as PPS, nylon, etc. are treated with steps of blending, extrusion, strip stretching, cooling, pelletizing, homogenization, injection molding, etc. so as to obtain the plastic pipe with the insert made from the PPS alloy material. The making method of the invention has simple and easy technique; the alloy material has the advantages of small specific weight, good heat and corrosion resistance as well as good dimensional stability; in addition, the obtained pipe has good sealing, high notched impact strength, etc. The plastic pipe provided by the invention has wide range of application and can be applicable to water supply and drainage systems and drinking water pipe systems, gas transmission systems and industrial pipe systems, heating systems and agricultural pipe systems.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for making plastic pipe fittings from polyphenylene sulfide composite materials. Background technique [0002] Plastic pipes are mainly used in the construction industry for water supply and drainage and water pipe systems, gas transmission and industrial pipe systems, heating systems and agricultural pipe systems. Plastic types for making plastic pipes and fittings include HDPE, PP, PPB, PPR, PPH, PVC, ABS, and PA, etc. Plastic pipe fittings are also called plastic fittings, which include joints, elbows, tees and crosses, etc. The inserts in the current plastic pipe fittings are basically made of metal copper, that is, the metal copper rods are used as materials and made through five machining processes such as blanking, rough turning, fine turning, turning and milling. The connection between fittings and plastic pipe fittings is integrated by one-time injection mold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29B11/08B29B9/06B29B9/14C08L81/02C08K7/14C08L51/06C08L23/12C08K5/56C08K5/54C08K3/00B29L23/00
Inventor 郝源增李明泽郝建鑫李鑫
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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