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UPVC pipe material/element and preparation method thereof

A technology for pipes and polyvinyl chloride resins, applied in the field of plastic processing, can solve the problems of poor mechanical properties of pipes or pipe fittings, unreasonable formulations, poor mechanical properties, etc., and achieves improved mechanical properties, reduced structural defects, and increased heat resistance temperature. Effect

Inactive Publication Date: 2009-09-16
内蒙古桂华塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009]Current UPVC pipes and fittings are mostly formulated with lead salt system, which not only has poor mechanical properties, but also is harmful to human body; In the method of preparing UPVC pipes and fittings, because the formula is not reasonable enough, the mechanical properties of the prepared pipes or fittings are not good, the wall thickness of the pipes is thicker, more materials are used, and the heat resistance and corrosion resistance need to be improved.

Method used

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  • UPVC pipe material/element and preparation method thereof
  • UPVC pipe material/element and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052]UPVC pipes, in parts by weight, contain 50 parts of polyvinyl chloride resin; 0.75 parts of hard lead; 0.85 parts of hard calcium carbonate; 4 parts of chlorinated polyethylene; 2 parts of polyvinyl chloride resin processing modifier; 0.28 parts of paraffin; 0.23 parts of stearic acid; 4.5 parts of light calcium carbonate; 0.15 parts of rare earth composite stabilizer.

[0053] The preparation method of the pipe is as follows:

[0054] 1) Stir polyvinyl chloride resin, hard lead, hard calcium carbonate, chlorinated polyethylene, polyvinyl chloride resin processing modifier, paraffin, stearic acid, light calcium carbonate and rare earth composite stabilizer, and mix well ;

[0055] 2) Kneading the fully mixed raw materials in step 2 at a temperature of 8°C;

[0056] 3) In a vacuum environment, the material is automatically loaded through the automatic feeding machine;

[0057] 4) Put the above mixture into a twin-screw extruder and extrude it into a mold. The specific ...

Embodiment 2

[0066] UPVC pipe material, by weight, contains 80 parts of polyvinyl chloride resin; 1 part of hard lead; 1.2 parts of hard calcium carbonate; 5 parts of chlorinated polyethylene; 3 parts of polyvinyl chloride resin processing modifier; 0.4 part of paraffin; 0.4 parts of stearic acid; 7 parts of light calcium carbonate; 0.25 parts of rare earth composite stabilizer.

[0067] The preparation method of the pipe is as follows:

[0068] 1) The polyvinyl chloride resin, hard lead, hard calcium carbonate, chlorinated polyethylene, polyvinyl chloride resin processing modifier, paraffin, stearic acid, light calcium carbonate and rare earth composite stabilizer prepared according to the formula Stir well and mix thoroughly;

[0069] 2) Kneading the fully mixed raw materials in step 2 at a temperature of 60°C;

[0070] 3) Loading in a vacuum environment;

[0071] 4) Put the above mixture into a twin-screw extruder and extrude it into a mold. The specific parameters are:

[0072] Die...

Embodiment 3

[0080] The UPVC pipe material contains 100 parts by weight of polyvinyl chloride resin; 1.4 parts of hard lead; 1.7 parts of hard calcium carbonate; 9.4 parts of chlorinated polyethylene; 5 parts of polyvinyl chloride resin processing modifier; 0.6 parts of paraffin; 0.6 parts of stearic acid; 10 parts of light calcium carbonate; 0.5 parts of rare earth composite stabilizer.

[0081] The preparation method of the pipe is as follows:

[0082] 1) raw material processing;

[0083] 2) The polyvinyl chloride resin, hard lead, hard calcium carbonate, chlorinated polyethylene, polyvinyl chloride resin processing modifier, paraffin, stearic acid, light calcium carbonate and rare earth composite stabilizer prepared according to the formula Stir well and mix well;

[0084] 3) kneading the fully mixed raw materials in step 2 at a temperature of 115°C;

[0085] 4) Loading in a vacuum environment;

[0086] 5) Put the above mixture into a twin-screw extruder and extrude it into a mold. ...

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Abstract

The invention discloses a UPVC pipe material / element and preparation method thereof; the UPVC pipe material / element contains polyvinyl chloride (PVC) resin of 50-100 parts, hard lead of 0.75-1.4 parts, hard calcium carbonate of 0.85-1.7 parts, chlorinated polyvinyl chloride of 4-9.4 parts, PVC resin processing modifier of 2-5 parts, paraffin of 0.28-0.6 parts, stearic acid of 0.23-0.6 parts, light calcium carbonate of 4.5-10 parts, and rare-earth composite complex stabilizer of 0.15-0.5 parts by weight. Compared with existing product, this pipe material / element enhances mechanics performance by 20%, improves pressure resistance by 15%, reduces wall thickness of pipe material by 15%, and greatly enhances heat resistance as well as corrosion resistance. Correspondingly, this invention further claims a UPVC pipe material and a preparation method thereof.

Description

technical field [0001] The invention relates to the technical field of plastic processing, in particular to UPVC pipes and parts and their preparation methods. Background technique [0002] UPVC, also known as hard PVC, is an amorphous thermoplastic resin made of vinyl chloride monomer through polymerization reaction plus certain additives. In addition to using additives, it also adopts the method of blending and modifying with other resins, so that it has obvious practical value. These resins include CPVC, PE, ABS, EVA, MBS, etc. UPVC pipe has the following characteristics: [0003] 1. Excellent physical and chemical properties. The pipes and fittings made of PVC are resistant to corrosion, high in impact strength, and small in fluid resistance (the flow rate is 30% higher than that of cast iron pipes of the same diameter). Anti-aging, long service life (according to the test data of the Ministry of Construction, the service life is 40-50 years), it is an ideal material...

Claims

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Application Information

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IPC IPC(8): F16L9/12C08L27/06C08K13/02C08K5/098C08K3/26C08K5/09B29C47/00B29C47/20B29C47/92B29C69/02B29C57/02B29C45/00B29C45/76B29B9/00B29C48/32B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/40B29C48/625B29C2948/92609B29C2948/92895B29C2948/92904B29C2948/92933
Inventor 王桂花
Owner 内蒙古桂华塑料有限公司
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