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Nano silicon dioxide and intumescent flame retardant synergistic flame-resistance polypropylene/ethylene propylene diene monomer rubber composite material and preparation method thereof

A technology of nano-silica and EPDM, applied to intumescent flame-retardant polypropylene/EPDM composite materials, synergistic flame-retardant polypropylene/EPDM composite materials and their preparation, nano In the field of silica and expanded flame-retardant polypropylene/EPDM composite materials and their preparation, they can solve the problems of decreased mechanical properties, poor compatibility, and poor dispersion of materials, and achieve improved mechanical properties, improved compatibility, and improved resistance. The effect of flammability

Inactive Publication Date: 2017-08-08
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the flammability of polypropylene / EPDM alloys limits its application range, so it is of great significance to study flame-retardant polypropylene / EPDM alloys
Intumescent flame retardants have become one of the most active additive-type environmentally friendly polymer flame retardants at home and abroad because of their flame-retardant effects such as heat insulation, oxygen insulation, smoke suppression, anti-drip, and low toxicity, but intumescent flame-retardant polypropylene / three Ethylene propylene rubber composite materials have poor compatibility, easy agglomeration, and poor dispersion during processing and mixing, resulting in a large amount of addition and a rapid decline in the mechanical properties of the material

Method used

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  • Nano silicon dioxide and intumescent flame retardant synergistic flame-resistance polypropylene/ethylene propylene diene monomer rubber composite material and preparation method thereof
  • Nano silicon dioxide and intumescent flame retardant synergistic flame-resistance polypropylene/ethylene propylene diene monomer rubber composite material and preparation method thereof

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Embodiment 1-5

[0024] The proportioning of table 1 embodiment 1-5

[0025]

Embodiment 1

[0027] The preparation method of embodiment 1

[0028] A method for preparing a synergistic flame-retardant polypropylene / EPDM composite material of nano-silica and intumescent flame retardant, comprising the steps of:

[0029] (1) Prepare ammonium polyphosphate, dipentaerythritol, and melamine in proportion to form an intumescent flame retardant, and dry it in an oven at 120°C for 2 hours together with nano-silica, and set it aside.

[0030] (2) Dissolve the silane coupling agent in 10 times its volume of anhydrous methanol to make a coupling agent / methanol solution, spray it on the surface of the intumescent flame retardant and nano-silica, and mix it in a high-speed mixer to improve After drying for 10 minutes, take it out, and then place it in an oven at 120°C to dry for 2 hours to obtain a surface-modified intumescent flame retardant and nano-silica (dry surface modification).

[0031] (3) According to the ratio in Table 1, mix the surface-modified nano-silica / intumescen...

Embodiment 2

[0032] The preparation method of embodiment 2

[0033] A method for preparing a synergistic flame-retardant polypropylene / EPDM composite material of nano-silica and intumescent flame retardant, comprising the steps of:

[0034] (1) Prepare ammonium polyphosphate, dipentaerythritol, and melamine in proportion to form an intumescent flame retardant, and dry it in an oven at 120°C for 2 hours together with nano-silica, and set it aside.

[0035] (2) Dissolve the silane coupling agent in 10 times its volume of anhydrous methanol to make a coupling agent / methanol solution, spray it on the surface of the intumescent flame retardant and nano-silica, and mix it in a high-speed mixer to improve After drying for 10 minutes, take it out, and then place it in an oven at 120°C to dry for 2 hours to obtain a surface-modified intumescent flame retardant and nano-silica (dry surface modification).

[0036](3) According to the ratio in Table 1, mix the surface-modified nano-silica / intumescent...

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Abstract

The invention discloses a nano silicon dioxide and intumescent flame retardant synergistic flame-resistance polypropylene / ethylene propylene diene monomer rubber composite material and a preparation method thereof. In parts by weight, a formula of the composite material consists of: 1 to 5 parts of nano silicon dioxide, 20 to 30 parts of intumescent flame retardant, 0.1 to 1.0 part of silane coupling agent, 50 to 70 parts of polypropylene, 5 to 15 parts of ethylene propylene diene monomer rubber, and 0.1 to 0.2 part of oxidized polyethlene wax. In the preparing process, the nano silicon dioxide and the intumescent flame retardant are surface-modified by the silane coupling agent. The surface-modified synergistic flame retardant is mixed with polypropylene / ethylene propylene diene monomer rubber and the like, and mixing and granulation are carried out by utilizing a three-screw extruder to prepare the nano silicon dioxide and intumescent flame retardant synergistic flame-resistance polypropylene / ethylene propylene diene monomer rubber composite material. The nano silicon dioxide provided by the invention not only can obviously improve flame retardant efficiency of the intumescent flame retardant for polypropylene / ethylene propylene diene monomer rubber alloy, but also greatly promotes mechanical performance of the intumescent flame retardant composite material.

Description

technical field [0001] The invention relates to an intumescent flame-retardant polypropylene / EPDM composite material; in particular to a synergistic flame-retardant polypropylene / EPDM composite material and a preparation method thereof; in particular to a nano-dioxide The invention discloses a composite material of silicon and expanded flame-retardant polypropylene / EPDM rubber and a preparation method thereof; it belongs to the technical field of polymer material modification. Background technique [0002] Polypropylene is an important general-purpose plastic with excellent comprehensive performance and processing performance. However, due to its large molding shrinkage rate, low low-temperature notched impact strength, and large grain size, it is brittle and limits its promotion and application. [0003] EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. As a rubber, its high elasticity and good low temperature performance are very beneficial to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/16C08L23/30C08K13/06C08K9/06C08K3/36C08K3/32C08K5/06C08K5/3492B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/9258B29C2948/92704C08K2003/323C08K2201/011C08L2201/02C08L2205/03C08L23/16C08L23/30C08K13/06C08K9/06C08K3/36C08K3/32C08K5/06C08K5/34922
Inventor 吴正环王权范其香蔡玉俊
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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