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Nanometer silica modified polyvinyl chloride composite material

A nano-silica and polyvinyl chloride technology, applied in the field of polymer materials, can solve the problems of poor thermal stability and difficult processing of polyvinyl chloride, and achieve good thermal stability, strong wear resistance and corrosion resistance, and high strength. Effect

Inactive Publication Date: 2015-08-26
殷培花
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyvinyl chloride has poor thermal stability and is not easy to process. Generally, it cannot be used directly. It usually needs to be modified and compounded, and related additives, such as heat stabilizers, flame retardants, and reinforcing agents, are added to improve its performance and application. scope

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A nano-silica modified polyvinyl chloride composite material, the components of which are proportioned by mass percentage: 50% polyvinyl chloride, 10% chlorinated polyethylene, 10% nano-silica, 8% nitrile rubber, Melamine cyanurate 9%, DEHP 10%, calcium zinc stabilizer 1%, calcium stearate 1%, aluminum-titanium composite coupling agent 0.5%, tetrakis[β-(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester 0.5%, the average degree of polymerization of the polyvinyl chloride is 800-1200, the weight average molecular weight is 50000-120000, the particle size is in the range of 100-300 mesh, the particle size of the nano-silica In the range of 20-80nm.

[0017] Preparation method: (1), weigh each component according to the weight ratio; (2), add nano-silica and aluminum-titanium composite coupling agent into a high-speed mixer, stir at a speed of 1500-3000r / min, and heat After reaching 80℃~120℃, keep stirring for 20~50min, then put the material into th...

Embodiment 2

[0019] A nano-silica modified polyvinyl chloride composite material, the components of which are proportioned by mass percentage: 75% polyvinyl chloride, 5% chlorinated polyethylene, 2% nano-silica, 5% nitrile rubber, Melamine cyanurate 6%, DEHP 5%, calcium zinc stabilizer 0.5%, calcium stearate 0.5%, aluminum titanium composite coupling agent 0.5%, β-(3,5-di-tert-butyl-4-hydroxyphenyl ) 0.5% of stearyl propionate, the average degree of polymerization of the polyvinyl chloride is 800-1200, the weight-average molecular weight is 50,000-120,000, the particle size is in the range of 100-300 mesh, the particle size of the nano-silica In the range of 20-80nm.

[0020] Preparation method: (1), weigh each component according to the weight ratio; (2), add nano-silica and aluminum-titanium composite coupling agent into a high-speed mixer, stir at a speed of 1500-3000r / min, and heat After reaching 80℃~120℃, keep stirring for 20~50min, then put the material into the low-speed cooling mi...

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Abstract

The invention discloses a nanometer silica modified polyvinyl chloride composite material. The composite material comprises, by mass, 50-75% of polyvinyl chloride, 5-10% of chlorinated polyethylene, 2-10% of nanometer silica, 5-8% of butadiene-acrylonitrile rubber, 6-9% of melamine cyanurate, 5-10% of DEHP, 0.5-1.5% of a calcium and zinc stabilizer, 0.5-1% of calcium stearate, 0.1-0.5% of an aluminum and titanium composite coupling agent and 0.1-0.5% of an antioxidant, and the particle size of the nanometer silica is 20-80nm. The nanometer silica modified polyvinyl chloride composite material has the advantages of excellent impact toughness, excellent processability, good heat stability, high strength, strong wear and corrosion resistance, and excellent halogen-free flame retardation performance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a nano-silica modified polyvinyl chloride composite material. Background technique [0002] Polyvinyl chloride (PVC) is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator, and is a homopolymer of vinyl chloride. Polyvinyl chloride is a white powder with an amorphous structure. The degree of branching is small. The molecular weight is generally in the range of 50,000 to 120,000. It has a large polydispersity and no fixed melting point. It becomes a viscoelastic state, and begins to change into a viscous fluid state at 160°C~180°C. It has good mechanical properties, a tensile strength of about 60MPa, an impact strength of 5~10kJ / m2, and excellent dielectric properties. It is a A very versatile material. However, polyvinyl chloride has poor thermal stability and is not easy to process, and generally cannot be used directly. It usually ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08L9/02C08K13/06C08K9/04C08K3/36C08K5/3492C08K5/12C08K5/098C08K5/134B29B9/06B29C47/92B29C48/92
CPCC08L27/06B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08K2201/011C08L2201/02C08L2201/08C08L2201/22C08L2205/03C08L23/286C08L9/02C08K13/06C08K9/04C08K3/36C08K5/34928C08K5/12C08K5/098
Inventor 不公告发明人
Owner 殷培花
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