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Sizing formula of flame-retarding elastic support rubber product

A technology for formulating rubber products and rubber compounds, applied in the field of raw rubber and additives, can solve the problems of low oxygen index, high smoke index, no flame retardant performance and smoke suppression performance, etc. The effect of fast speed and excellent comprehensive mechanical and physical properties

Inactive Publication Date: 2010-07-28
铁岭华晨橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the formula of rubber materials for elastic support rubber products is only to meet the needs of shock absorption, and the rubber elastic support products produced only have certain physical and chemical properties such as strength, elasticity, hardness, and anti-aging that are suitable for shock absorption. It does not have flame retardant performance and smoke suppression performance. Its oxygen index is low and smoke index is high. It is not suitable for floor skeleton and floor when laying floors in public places, passenger trains, subways, buses, etc. with fire protection requirements. rubber elastic support

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The components of the compound formula of the flame-retardant elastic support rubber product and the mass parts of each component are:

[0016] Type 21-322 Neoprene: 30, Standard 1# Natural Rubber: 70, Zinc Oxide: 8, Light Magnesium Oxide: 5, Sulfur: 0.8, Accelerator DM: 0.8, Accelerator CZ: 0.8, Accelerator Na -22: 0.3, semi-reinforcing carbon black: 15, antiaging agent 4010: 1, antiaging agent 264: 0.5, 2500 mesh antimony trioxide: 20, 2500 mesh aluminum hydroxide: 55, 70 solid chlorinated paraffin: 27.

[0017] After vulcanization under the condition of 153°C×10 minutes, the properties of the obtained rubber products: tear strength: 16Mpa, elongation at break: 550%, Shore hardness: 53, brittleness temperature: -40°C unbroken, 70°C ×72h hot air aging: hardness change rate: 4%, tear strength change rate: -3.15%, break elongation change rate: -5.12%, fire prevention and smoke emission: meet the M3F2 level required in the NFF16-101 standard.

Embodiment 2

[0019] The components of the compound formula of the flame-retardant elastic support rubber product and the mass parts of each component are:

[0020] Type 21-322 neoprene: 25, standard part 1# natural rubber: 75, zinc oxide: 7.5, light magnesium oxide: 4.5, sulfur: 0.8, accelerator DM: 0.8, accelerator CZ: 0.8, accelerator Na -22: 0.3, antioxidant RD: 1, antioxidant 4010: 1, antioxidant 264: 0.5, 2500 mesh antimony trioxide: 20, 2500 mesh aluminum hydroxide: 55, semi-reinforcing carbon black: 15, 70 solid Chlorinated paraffin: 27.

[0021] After vulcanization under the condition of 153°C×10 minutes, the properties of the obtained rubber products are:

[0022] Breaking strength: 17Mpa, breaking elongation: 560%, Shore hardness: 52, 70℃×72h hot air aging: hardness change rate: 5%, breaking strength change rate: -4.28%, breaking elongation Change rate: -5.85%, brittle temperature: -40℃ unbroken, fire protection and smoke emission: meet the M3F2 level required in the NFF16-101 ...

Embodiment 3

[0024] The components of the compound formula of the flame-retardant elastic support rubber product and the mass parts of each component are:

[0025] Type 21-322 Neoprene: 30, Standard 1# Natural Rubber: 70, Zinc Oxide: 7.5, Light Magnesium Oxide: 4.5, Sulfur: 0.8, Accelerator DM: 0.8, Accelerator CZ: 0.8, Accelerator Na -22: 0.3, antioxidant RD: 1, antioxidant 4010: 1, antioxidant 264: 0.5, 2500 mesh antimony trioxide: 20, 2500 mesh aluminum hydroxide: 55, semi-reinforcing carbon black: 15, 70 solid Chlorinated paraffin: 27, dispersant-25: 0.5, microcrystalline wax 85: 1.5.

[0026] After vulcanization under the condition of 153°C×10 minutes, the properties of the obtained rubber products are tear strength: 16Mpa, elongation at break: 550%, Shore hardness: 54, 70°C×72h hot air aging: hardness change rate: 4% change rate of breaking strength -3.15%, change rate of elongation at break -5.12%, brittle temperature: 40 ℃ unbroken, fire prevention and smoke emission: meet the M3F...

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Abstract

The invention discloses a sizing formula of a flame-retarding elastic support rubber product. The sizing formula is characterized in that components of the rubber product are as follows (parts by mass of each component are shown in brackets): 21-type-322 neoprene (25-35), standard 1# natural rubber (65-75), zinc oxide (7-9), light magnesium oxide (4-6), sulfur (0.1-1.0), an accelerant CZ (1.3-1.7), an accelerant Na-22 (0.4-0.6), an ageing inhibitor 4,010 (0.8-1.2), 2,500-mesh diantimony trioxide (15-25), 2,500-mesh aluminium hydroxide (50-60) and semi-reinforcing carbon black (10-20). In the invention, unvulcanized rubber is a combination of the neoprene and the natural rubber, a vulcanizing system is a combination of metal oxide and the sulfur, a flame retardant is a combination of the diantimony trioxide and aluminium hydroxide, and the semi-reinforcing carbon black is used for reinforcing; therefore, the prepared rubber product has good physicochemical properties, especially has high oxygen index and low smoke index. The invention is applicable to preparing the elastic support rubber product used between a floor board and a floor board framework when floor boards are laid in a public place and on a passenger train, a subway as well as a bus.

Description

technical field [0001] The invention relates to a rubber compound formula for elastically supported rubber products, in particular to raw rubber and auxiliary agents in the rubber compound formula for elastically supported rubber products with flame-retardant properties. Background technique [0002] Rubber products are made of raw rubber with certain additives through mixing and vulcanization. Rubber products have good elasticity and have shock absorption properties. Among rubber products, some rubber products are used as elastic support rubber products for shock absorption, such as elastic support pads between the floor skeleton and the floor when laying the floor. The elastic supporting rubber products between the floor frame and the floor should have certain physical and chemical properties such as strength, elasticity, hardness, and anti-aging. In some public places, passenger trains, subways, buses, etc., floors are laid on the ground. For the fire safety of these pub...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L11/00C08K13/02C08K3/22C08K3/06C08K3/04
Inventor 杜艳军
Owner 铁岭华晨橡塑制品有限公司
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