An odorless flame retardant rubber v-belt

A technology of flame retardant rubber and flame retardant, which is applied in the field of transmission belts to achieve the effects of reducing usage, improving compatibility and improving flame retardant effect

Active Publication Date: 2017-08-08
SANLUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the existing rubber V-belt, the invention provides a kind of odorless flame-retardant rubber V-belt, which adopts intumescent flame retardant (isoprene and dimethyl-2-amino-methylphosphoramide ester copolymer) modified natural rubber, no harmful gas is released during use and flame retardant, which meets people's requirements for environmental protection and safety, and the flame retardant has good compatibility with the rubber matrix, and has non-migration, avoiding Eliminates "secondary pollution" during the use of materials

Method used

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  • An odorless flame retardant rubber v-belt
  • An odorless flame retardant rubber v-belt
  • An odorless flame retardant rubber v-belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of odorless flame-retardant rubber V-belt, which is composed of four parts: a cloth covering layer, a stretching layer, a strength layer and a compression layer. 0.4g part of stearic acid, 2g antioxidant, 5g zinc oxide, 4g magnesium oxide and 2g softener, the LOI of the primer material is 26.7%, and the flame retardant is the copolymer shown in formula (I) :

[0026]

[0027] In this embodiment, the preparation method of flame retardant is:

[0028] (1) Add 19.6g ethanol, 14g (0.1mol) dimethyl-2-amino-methylphosphoramidate and 9.8g (0.1mol) maleic anhydride to a 250mL three-necked flask equipped with a reflux condenser and a thermometer , stirred and heated to 40 ° C for 3 hours to prepare a mixed solution containing an intumescent flame retardant;

[0029] (2) 0.02g initiator potassium persulfate is dissolved in 50mL distilled water, stand-by;

[0030] (3) 30g of ethanol, the mixed solution of 20g of step (1) and 10g of isoprene are added to the reaction v...

Embodiment 2

[0032] A kind of odorless flame-retardant rubber V-belt, which is composed of four parts: a cloth covering layer, a stretching layer, a strength layer and a compression layer. 0.5g portion of stearic acid, 3g anti-aging agent, 7g zinc oxide, 5g magnesium oxide and 3g softener, the LOI of the primer material is 28.2%, and the flame retardant is the same as the flame retardant in Example 1.

[0033] In this embodiment, the preparation method of flame retardant is:

[0034] (1) Add 32.4g ethanol, 14g (0.1mol) dimethyl-2-amino-methylphosphoramidate and 10.8g (0.11mol) maleic anhydride to a 250mL three-necked flask equipped with a reflux condenser and a thermometer , stirred and heated to 60 ° C for 5 hours to prepare a mixed solution containing an intumescent flame retardant;

[0035] (2) 0.04g initiator potassium persulfate is dissolved in 50mL distilled water, stand-by;

[0036] (3) 40g of ethanol, the mixed solution of 30g of step (1) gained and 10g of isoprene are added in t...

Embodiment 3

[0038] An odorless flame-retardant rubber V-belt, which is composed of four parts: a cloth covering layer, a stretching layer, a strength layer and a compression layer. 0.6g part of stearic acid, 4g anti-aging agent, 8g zinc oxide, 6g magnesium oxide and 5g softener, the LOI of the primer material is 27.8%, and the flame retardant is the same as the flame retardant in Example 1.

[0039] In this embodiment, the preparation method of flame retardant is:

[0040] (1) Add 47g ethanol, 14g (0.1mol) dimethyl-2-amino-methylphosphoramidate and 11.8g (0.12mol) maleic anhydride in a 250mL there-necked flask equipped with a reflux condenser and a thermometer, Stir and heat up to 72°C for 10 hours to prepare a mixed solution containing an intumescent flame retardant;

[0041] (2) 0.06g initiator potassium persulfate is dissolved in 50mL distilled water, stand-by;

[0042] (3) 50g of ethanol, the mixed solution of 40g of step (1) gained and 10g of isoprene are added in the reaction vess...

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Abstract

The invention provides an odorless flame-retardant rubber V belt which is composed of a wrapper layer, a stretching layer, a high-power layer and a compressive layer. The odorless flame-retardant rubber V belt is characterized in that the compressive layer is prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 10-20 parts of flame retardant, 5-10 parts of carbon black, 0.4-0.6 part of stearic acid, 2-4 parts of anti-aging agent, 5-8 parts of zinc oxide, 4-6 parts of magnesium oxide and 2-5 parts of softening agent. The flame retardant is a copolymer disclosed as Formula (I). By using the intumescent flame retardant (isoprene-dimethyl-2-amino-methylphosphoramidate copolymer) copolymer modified natural rubber, no harmful gas is released in the use and flame retarding process, thereby satisfying the requirements of people for environment friendliness and safety. The flame retardant has favorable compatibility with the rubber matrix and has non-mobility, thereby avoiding secondary pollution in the material use process.

Description

technical field [0001] The invention relates to the technical field of transmission belts, in particular to an odorless flame-retardant rubber V-belt. Background technique [0002] The V-belt, also known as the V-belt, is mainly composed of cloth covering layer, stretching layer, strength layer and compression layer. It is a rubber product widely used in mechanical and equipment power transmission. Compression layer rubber, also known as primer, occupies a large weight in the V-belt. During the use of V-belts, the primer is required to have the advantages of heat resistance, aging resistance, flex fatigue resistance, small compression deformation, good lateral rigidity and longitudinal flexibility. [0003] Rubber is a hydrocarbon and is a flammable material. When burning, the rubber proceeds according to the chain reaction process of free radicals, and it is easy to produce toxic and corrosive gases such as HCL, CO, HCN, and SO2. It cannot meet the safety and flame retar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L47/00C08K13/02C08K3/04C08K5/09C08K3/22B32B25/12B32B25/04C08F236/08C08F230/02
CPCB32B25/04B32B25/12C08F236/08C08L7/00C08L2201/02C08L2201/22C08L47/00C08K13/02C08K3/04C08K5/09C08K2003/2296C08K2003/222C08F230/02C08F2/04
Inventor 吴培生吴琼瑛石水祥
Owner SANLUX
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