High-hydrophilia polyvinyl chloride and preparation method thereof

A technology of polyvinyl chloride and hydrophilicity, which is applied in the chemical industry, can solve problems such as the limitation of the scope of use, and achieve the effects of improved hydrophilicity, excellent mechanical properties, and improved hydrophilicity

Active Publication Date: 2014-03-05
JIANGSU HENGFENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the hydrophobicity of PVC, its application range is greatly limited

Method used

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  • High-hydrophilia polyvinyl chloride and preparation method thereof
  • High-hydrophilia polyvinyl chloride and preparation method thereof
  • High-hydrophilia polyvinyl chloride and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Test formula:

[0018] Formula material

Dosage (parts by weight)

PVC (medical grade)

100

Calcium Zinc Composite Stabilizer

3.3

Double 2-5 (initiator)

0.4-0.6

Lubricant stearic acid

0.8-1.0

DOP (medical grade)

24

Methacrylate

2.4

[0019] Stir PVC, stabilizer, initiator, lubricant, DOP and methacrylic acid in a high-speed mixer to 100 ° C, add to a twin-screw extruder for extrusion granulation, and the screw speed used for extrusion granulation is 80 -100 rpm; the temperature settings of the twin-screw extruder are shown in the table below:

[0020]

[0021] The obtained highly hydrophilic polyvinyl chloride has a contact angle of 96° as tested by a measuring instrument, while the contact angle of existing commercially available PVC is only 64°, and while the hydrophilicity of PVC of the present invention is significantly increased, other mechanical properties are uniform. The same...

Embodiment 2

[0023] Test formula:

[0024] Formula material

Dosage (parts by weight)

PVC (medical grade)

95

Calcium Zinc Composite Stabilizer

3.6

Double 2-5 (initiator)

0.4-0.6

Lubricant stearic acid

0.8-1.0

DOP (medical grade)

28

Methacrylate

2.8

[0025] Stir PVC, stabilizer, initiator, lubricant, DOP and methacrylic acid in a high-speed mixer to 100 ° C, add to a twin-screw extruder for extrusion granulation, and the screw speed used for extrusion granulation is 80 -100 rpm; the temperature settings of the twin-screw extruder are shown in the table below:

[0026]

[0027] The obtained highly hydrophilic polyvinyl chloride has a contact angle of 95° as tested by a measuring instrument, while the contact angle of existing commercially available PVC is only 64°, and while the hydrophilicity of PVC of the present invention is significantly increased, other mechanical properties are all the same. The ...

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Abstract

The invention discloses a high-hydrophilia polyvinyl chloride and a preparation method thereof. The polyvinyl chloride is prepared from the following components in parts by weight: 90-110 parts of PVC (Polyvinyl Chloride), 3-3.8 parts of a stabilizer, 0.4-1 part of an initiator, 0.5-1.0 part of lubricant, 24-30 parts of dioctyl phthalate and 2.4-3.0 parts of methacrylic acid. The high-hydrophilia polyvinyl chloride has excellent dynamic and mechanical properties as well as hydrophilia, and can be used for preparing cable products such as cable insulating materials and sheaths.

Description

Technical field: [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a highly hydrophilic polyvinyl chloride and a preparation method thereof. Background technique: [0002] Polyvinyl chloride, referred to as PVC, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It is a homopolymer of vinyl chloride. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is a white powder with an amorphous structure and a small degree of branching. The molecular weight of industrially produced PVC is generally in the range of 50,000 to 120,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80-85°C, and becomes viscoelastic at 130°C , 160 ~ 180 ℃ began to change into a viscous flow state; good mechanical properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/04C08F220/06C08K13/02C08K5/12C08K5/09B29B9/06B29C47/92B29C48/92
CPCB29C48/92
Inventor 张建康邰锡峰蒋周山姚建强储旭超
Owner JIANGSU HENGFENG CABLE
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