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Modified lignin intumescent flame retardant TPO composite material as well as preparation method and application of composite material

A composite material and intumescent flame-retardant technology, which is applied in the field of modified lignin intumescent flame-retardant TPO composite material and its preparation and application, can solve the problems of loose and porous charcoal thermal conductivity and high charcoal formation rate, and achieve weather resistance Good, high char formation rate, high tensile strength at break

Inactive Publication Date: 2014-06-04
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxygen index of lignin is 40%, the charcoal formation rate is high, and the charcoal layer formed by combustion is loose and porous and has poor thermal conductivity.

Method used

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  • Modified lignin intumescent flame retardant TPO composite material as well as preparation method and application of composite material
  • Modified lignin intumescent flame retardant TPO composite material as well as preparation method and application of composite material
  • Modified lignin intumescent flame retardant TPO composite material as well as preparation method and application of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of modified lignin intumescent flame-retardant TPO composite material, the preparation method comprises the following steps:

[0024] ①Add 96% lignin by mass to the high mixer, mix 2% white oil and 2% titanate by mass, and then add to the high mixer, and mix for 5 minutes to obtain modified wood white;

[0025] ②The thermoplastic polyolefin elastomer, modified lignin, ammonium polyphosphate and melamine cyanurate were vacuum-dried at 90°C for 4 hours. The thermoplastic polyolefin elastomer was a melt blend of polypropylene and EPDM rubber. , 70% by mass of thermoplastic polyolefin elastomer, 3% by mass of modified lignin, 21.3% by mass of ammonium polyphosphate and 5.7% by mass of melamine cyanurate in the open mill Kneading at 170°C for 10min, press molding at 175°C in a flat vulcanizer.

[0026] The performance evaluation and characterization results of the roofing waterproof composite material prepared in Example 1 are shown in Table 1.

Embodiment 2

[0028] The difference from Example 1 is:

[0029] The thermoplastic polyolefin elastomer, modified lignin, ammonium polyphosphate and melamine cyanurate were vacuum-dried at 90° C. for 4 hours. The thermoplastic polyolefin elastomer was a melt blend of polypropylene and EPDM rubber. 70% by mass of thermoplastic polyolefin elastomer, 4% by mass of modified lignin, 22.7% by mass of ammonium polyphosphate and 3.3% by mass of melamine cyanurate in open mill 170 Kneading for 10min, press molding at 175°C in a flat vulcanizer.

[0030] The performance evaluation and characterization results of the roofing waterproof composite material prepared in Example 2 are shown in Table 1.

Embodiment 3

[0032] The difference from Example 1 is:

[0033] The thermoplastic polyolefin elastomer, modified lignin, ammonium polyphosphate and melamine cyanurate were vacuum-dried at 90° C. for 4 hours. The thermoplastic polyolefin elastomer was a melt blend of polypropylene and EPDM rubber. 70% by mass of thermoplastic polyolefin elastomer, 5% by mass of modified lignin, 23.4% by mass of ammonium polyphosphate and 1.6% by mass of melamine cyanurate in open mill 170 Kneading for 10min, press molding at 175°C in a flat vulcanizer.

[0034] The performance evaluation and characterization results of the roofing waterproof composite material prepared in Example 3 are shown in Table 1.

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Abstract

The invention relates to a modified lignin intumescent flame retardant thermoplastic polyolefin (TPO) composite material as well as a preparation method and an application of the composite material. The composite material contains modified lignin, wherein the modified lignin consists of the following components in percentage by mass: 94-96% of lignin, 2-4% of white oil and 1-2% of titanate; and the modified lignin accounts for 3-8% in terms of total mass of the composite material. The prepared modified lignin intumescent flame retardant TPO composite material disclosed by the invention has the beneficial effects of being high in tensile strength at break, high in elongation at break, low in heating expansion amount, good in low temperature flexibility, good in penetration resistance and strong in chemical corrosion resistance; and the composite material is excellent in weather aging resistance, applicable to damp, hot and cold natural environments in a long term, and low in performance change.

Description

technical field [0001] The present invention relates to a modified lignin intumescent flame-retardant TPO composite material and its preparation method and application. Background technique [0002] Thermoplastic polyolefin elastomer (TPO) is an important thermoplastic elastomer. It is an elastomer material composed of rubber and polyolefin. It has high elasticity, high strength, high elongation and good low temperature performance; it also has excellent It has the advantages of high heat resistance, aging resistance and UV resistance, and becomes rubber elasticity at room temperature, with low density, large bending, high low temperature impact resistance, easy processing, and reusability. It is widely used in automotive parts, electrical and electronic, building sealing, Sports equipment, machinery industry and other fields. TPO waterproof sheet is a new type of building waterproof material for waterproof engineering, but there are few researches on its flame retardant. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/16C08L97/00C08K13/02C08K5/01C08K5/10C08K3/32C08K5/3492
CPCC08L23/12C08L23/16C08L2201/02C08L2201/08C08L2207/04C08L97/00C08K13/02C08K2003/323C08K5/34928
Inventor 冯钠张红王新红谷宇刘国峰王艾爽
Owner DALIAN POLYTECHNIC UNIVERSITY
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