Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Polyvinyl chloride (PVC)/whisker calcium sulfate composite material and preparation method thereof

A whisker calcium sulfate and composite material technology is applied in the field of PVC/whisker calcium sulfate composite material and its preparation, and achieves the effects of excellent mechanical properties, good thermal stability, and resource reuse.

Inactive Publication Date: 2012-05-30
SHANGHAI UNIV OF ENG SCI
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to literature reports, whisker calcium sulfate is used as a reinforcing material in polymer materials such as polypropylene, polyethylene, ethylene-propylene rubber and epoxy resin. It can also be used with petroleum asphalt as a paving material, which can significantly improve the performance of petroleum asphalt. Performance, but the application of whisker calcium sulfate in PVC has not been reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare 43.9kg of PVC compound according to the following ratio,

[0026] PVC: 30kg

[0027] DOP: 9kg

[0028] Ca / Zn composite heat stabilizer: 0.9kg

[0029] Epoxidized soybean oil: 1kg

[0030] Stearic acid: 0.3kg

[0031] Gos: 0.3kg

[0032] Whisker calcium sulfate A: 1.5kg

[0033] Implementation process: fully mix the above raw materials in an internal mixer, the mixing temperature is 120°C, and the mixing time is 15 minutes, then put the mixed material into the extruder, after extrusion, granulate to obtain whisker calcium sulfate / PVC composite. The temperature of the three sections of the extruder and the temperature of the die are controlled at 170°C, 175°C, 180°C and 180°C, respectively.

[0034] The product performance of the obtained composite material: the tensile strength is 19MPa, the elongation at break is 450%, the thermal deformation is <0.4mm (190°C), and the thermal stability time is 160min (Congo red method, the ...

Embodiment 2

[0036] Prepare 44.5kg of PVC mixture according to the following proportions.

[0037] PVC: 30kg

[0038] DOP: 9kg

[0039] Ca / Zn composite heat stabilizer: 0.9kg

[0040] Epoxidized soybean oil: 1kg

[0041] Stearic acid: 0.3kg

[0042] Gos: 0.3kg

[0043] Whisker calcium sulfate B: 3kg

[0044] Implementation process: fully mix the above raw materials in an internal mixer, the mixing temperature is 120°C, and the mixing time is 15 minutes, then put the mixed material into the extruder, after extrusion, granulate to obtain whisker calcium sulfate / PVC composite. The temperature of the three sections of the extruder and the temperature of the die are controlled at 170°C, 175°C, 180°C and 180°C, respectively.

[0045] The product performance of the obtained composite material: the tensile strength is 18MPa, the elongation at break is 420%, the thermal deformation is <0.4mm (170°C), and the thermal stability time is 138min (Congo red method, t...

Embodiment 3

[0047] Prepare 44.5kg of PVC mixture according to the following proportions.

[0048] PVC: 30kg

[0049] DOP: 9kg

[0050] Ca / Zn composite heat stabilizer: 0.9kg

[0051] Epoxidized soybean oil: 1kg

[0052] Stearic acid: 0.3kg

[0053] Gos: 0.3kg

[0054] Whisker calcium sulfate A: 3kg

[0055] Implementation process: fully mix the above raw materials in an internal mixer, the mixing temperature is 120°C, and the mixing time is 15 minutes, then put the mixed material into the extruder, after extrusion, granulate to obtain whisker calcium sulfate / PVC composite. The temperature of the three sections of the extruder and the temperature of the die are controlled at 170°C, 175°C, 180°C and 180°C, respectively.

[0056] The product performance of the obtained composite material: the tensile strength is 21MPa, the elongation at break is 320%, the thermal deformation is <0.4mm (190°C), and the thermal stability time is 181min (Congo red method, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyvinyl chloride (PVC) / whisker calcium sulfate composite material and a preparation method thereof. The polyvinyl chloride (PVC) / whisker calcium sulfate composite material is composed of PVC, a plasticizer, a heat stabilizer, a co-stabilizer, stearic acid, an external lubricant and whisker calcium sulfate. The composite material has the characteristics of favorable mechanical property and heat stability.

Description

technical field [0001] The invention relates to the field of industrial materials, in particular to a PVC / whisker calcium sulfate composite material and a preparation method thereof. Background technique [0002] Due to the existence of unstable groups such as allyl chloride in the structure of polyvinyl chloride and its copolymers, during processing and use, under the action of heat and light, the degradation reaction caused by the removal of HCl will occur. A series of conjugated structures are generated in the process. When the number of conjugated structures exceeds 5, PVC will gradually turn yellow and black, so that the macromolecular chains are completely degraded and lose their function. Therefore, during the processing and use of PVC, heat stabilizers must be added to inhibit the degradation reaction of PVC de-HCl. The main function of heat stabilizers is to inhibit the degradation of PVC during PVC processing and use. [0003] Most of the heat stabilizers used fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/06C08K5/09C08K7/08C08K3/30C08K5/12C08K5/1515
Inventor 张书华李强方波龚欣雨侯诚来王燮李青凤
Owner SHANGHAI UNIV OF ENG SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com