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Preparation method of nano silicon dioxide modified polyvinyl chloride composite material

A technology of nano-silica and polyvinyl chloride, which is applied in the field of polyvinyl chloride modification, can solve the problems that the performance of composite materials cannot reach the ideal state, and achieve outstanding plasticizing processing performance, high impact strength, and good thermal stability Effect

Active Publication Date: 2012-02-15
河南海博瑞硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary nano-silica is difficult to disperse at the nanometer level in polymer materials, and cannot make the performance of the composite material reach an ideal state.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Add 200g of PVC resin (SG-7 type), 12g of heat stabilizer, 0.6g of lubricant, and 8g of nano-silica (RNS-D type: the surface of the particle is modified by an organic carbon chain containing double bonds) into the preheated In the high-speed mixer, 3000r / min high-speed mixing for 8-28min.

[0021] (2) Cool down to room temperature after unloading, knead on a double-roller plastic mixer, the temperature of the kneader rolls is 150-200°C, remove it after kneading for 5-20 minutes, and put it in a preheated to 160-200°C In a heat press mold.

[0022] (3) Put the mold into the vulcanizing machine, slightly pressurize and preheat for 3-10min, then pressurize to 10-25MPa and press for 5-15min.

[0023] (4) Finally, take out the material and put it into a cold press, and cool it to room temperature with cold water under a pressure of 5 MPa. Take out the existing nano-silica / polyvinyl chloride composite material and cut it into required samples.

[0024] The notched impa...

Embodiment 2

[0026] (1) Add 200g of PVC resin (SG-7 type), 12g of heat stabilizer, 0.6g of lubricant, and 4g of nano-silica (DNS-3 type: the particle surface is modified by an inert organic carbon chain) into the preheated high-speed In the mixer, mix at a high speed of 3000r / min for 8-28min.

[0027] (2) Cool down to room temperature after unloading, knead on a double-roller plastic mixer, the temperature of the kneader rolls is 150-200°C, remove it after kneading for 5-20 minutes, and put it in a preheated to 160-200°C In a heat press mold.

[0028] (3) Put the mold into the vulcanizing machine, slightly pressurize and preheat for 3-10min, then pressurize to 10-25MPa and press for 5-15min.

[0029] (4) Finally, take out the material and put it into a cold press, and cool it to room temperature with cold water under a pressure of 5 MPa. Take out the existing nano-silica / polyvinyl chloride composite material and cut it into required samples.

[0030] The notched impact strength of the n...

Embodiment 3

[0032] (1) Add 200g of PVC resin (SG-7 type), 12g of heat stabilizer, 0.6g of lubricant, and 6g of nano-silica (DNS-2 type: the particle surface is modified by hexamethyl silicon) into the preheated high-speed In the mixer, mix at a high speed of 3000r / min for 8-28min.

[0033] (2) Cool down to room temperature after unloading, knead on a double-roller plastic mixer, the temperature of the kneader rolls is 150-200°C, remove it after kneading for 5-20 minutes, and put it in a preheated to 160-200°C In a heat press mold.

[0034] (3) Put the mold into the vulcanizing machine, slightly pressurize and preheat for 3-10min, then pressurize to 10-25MPa and press for 5-15min.

[0035] (4) Finally, take out the material and put it into a cold press, and cool it to room temperature with cold water under a pressure of 5 MPa. Take out the existing nano-silica / polyvinyl chloride composite material and cut it into required samples.

[0036] The notched impact strength of the nano-silica / ...

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Abstract

The invention relates to a preparation method of a nano-silica modified polyvinyl chloride composite material with high impact strength, excellent thermal performance and excellent processing performance, which contains 100 parts of PVC resin and 4.0 to 10 parts of heat stabilizer according to the weight unit , 0.5-5 parts of lubricant, 0.5-20 parts of nano-silica; the present invention effectively overcomes the characteristics of poor impact toughness and thermal stability of pure polyvinyl chloride through the modification of polyvinyl chloride by nano-silica , significantly improving the notched impact strength, thermal stability and plasticizing processability of the material.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride modification, in particular to a preparation method of a nano-silica polyvinyl chloride composite material. Background technique [0002] Polyvinyl chloride (PVC) is one of the main general-purpose plastics. It has excellent characteristics such as flame retardancy, insulation, and chemical corrosion resistance. It is widely used in construction, light industry, agriculture, packaging, and daily use. However, polyvinyl chloride also has defects such as poor impact resistance and poor thermal stability, which limit the application range of polyvinyl chloride to a certain extent. The traditional PVC toughening method is to add rubber elastomers such as CPE, ACR, and MBS to the matrix. The addition of rubber elastomers greatly improves the toughness of the material, but at the same time greatly reduces the stiffness, strength, and heat distortion temperature of the material. , and increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K9/04C08K9/06C08K5/098C08K5/09C08K5/57B29B7/28B29B7/72B29C43/58B29C35/02
Inventor 田爱娟李小红束华东王志东李庆华候克伟张治军
Owner 河南海博瑞硅材料科技有限公司