Flame-retardant foaming adhesive tape and preparation process thereof

A technology of styrofoam and flame retardant, applied in the field of flame retardants, can solve the problems of large smoke production and high cost of raw materials for rubber strips, and achieve the effect of less equipment investment, low cost and good flame retardant effect

Pending Publication Date: 2022-05-10
临朐瑞星塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects, the object of the present invention is to provide a flame-retardant foamed rubber strip and its preparation process, aiming to solve the technical problems of large amount of smoke and high cost of raw materials when the rubber strip is used in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 50~80 parts of EPDM rubber, 15~20 parts of expandable graphite, 30~40 parts of calcium carbonate, 80~100 parts of inorganic flame retardant, 20~40 parts of organic flame retardant, 5~8 parts of zinc oxide 0.5-4 parts of azodicarbonamide, 15-30 parts of paraffin oil, 1-3 parts of sulfur, and 1-3 parts of 2,2-dithiodibenzothiazole.

[0025] Expandable graphite is dissolved in ethanol solution after ultrasonic dispersion, added titanate, heated to 50°C and ultrasonically impregnated for 150min, transferred to an oven for drying at 90°C, and set aside.

[0026] Weigh 50 parts of EPDM rubber, 15 parts of expandable graphite, 30 parts of calcium carbonate and 15 parts of paraffin oil and place them in a mixer, raise the temperature to 85°C, and mix for 5 minutes at a speed of 60 r / min; Increase the temperature of the mixer to 130°C, add 80 parts of inorganic flame retardant (the ratio of hydrotalcite and antimony trioxide is 1:1), 20 parts of organic flame retardant, 5 ...

Embodiment 2

[0028] Expandable graphite is dissolved in ethanol solution after ultrasonic dispersion, added titanate, heated to 50°C and ultrasonically impregnated for 150min, transferred to an oven for drying at 90°C, and set aside.

[0029] Weigh 65 parts of EPDM rubber, 18 parts of expandable graphite, 35 parts of calcium carbonate and 25 parts of paraffin oil and place them in a mixer, raise the temperature to 85°C, and mix for 10 minutes at a speed of 70r / min; l Increase the temperature of the mixer to 135°C, add 80 parts of inorganic flame retardant (the ratio of hydrotalcite and antimony trioxide is 1:2), 30 parts of organic flame retardant, 6 parts of zinc oxide, 2 parts of azodicarbonamide, 2 parts of sulfur, 2 parts of 2,2-dithiodibenzothiazole, adjust the rotating speed to 80r / min, and mix for 30min; Foam rubber strips; the rubber strips are placed on a flat vulcanizing machine, set the temperature at 145°C for one-stage vulcanization for 25 minutes, and then transferred to an o...

Embodiment 3

[0031] Expandable graphite is dissolved in ethanol solution after ultrasonic dispersion, added titanate, heated to 50°C and ultrasonically impregnated for 150min, transferred to an oven for drying at 90°C, and set aside.

[0032] Weigh 80 parts of EPDM rubber, 20 parts of expandable graphite, 40 parts of calcium carbonate and 30 parts of paraffin oil and place them in a mixer, raise the temperature to 90°C, and mix for 10 minutes at a speed of 70 r / min; Increase the temperature of the mixer to 140°C, add 100 parts of inorganic flame retardant (the ratio of hydrotalcite and antimony trioxide is 1:3), 40 parts of organic flame retardant, 8 parts of zinc oxide, 4 parts of azodicarbonamide, 3 parts of sulfur, 3 parts of 2,2-dithiodibenzothiazole, adjust the rotating speed to 80r / min, and mix for 30min; transfer the mixed material to a twin-screw extruder, extrude and granulate, and obtain a flame-retardant hair Foam rubber strips; the rubber strips are placed on a flat vulcanizing...

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Abstract

The invention discloses a flame-retardant foaming adhesive tape and a preparation process, and relates to the technical field of flame retardants, the flame-retardant foaming adhesive tape comprises the following raw materials by weight: 50-80 parts of ethylene propylene diene monomer, 15-20 parts of expansible graphite, 30-40 parts of calcium carbonate, 80-100 parts of an inorganic flame retardant, 20-40 parts of an organic flame retardant, 5-8 parts of zinc oxide, 0.5-4 parts of azodicarbonamide, 15-30 parts of paraffin oil, 1-3 parts of sulfur, and 1-3 parts of 2, 2-dithiobisbenzothiazole. The flame-retardant foaming adhesive tape is obtained by mixing the raw materials, melting and mixing, extruding and granulating, and carrying out segmented vulcanization. The prepared flame-retardant foaming adhesive tape has excellent flame retardance and compressive deformation resistance, the preparation method is simple, the finished product is low in smoke and low in toxicity, the manufacturing cost is low, and the flame-retardant foaming adhesive tape belongs to an environment-friendly flame-retardant foaming adhesive tape.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to a flame retardant foam rubber strip and a preparation process. Background technique [0002] EPDM rubber is an important rubber material, which is widely used in automobiles, electronic appliances and other industries. However, this rubber is a flammable material with a low oxygen index, and the amount of smoke generated during combustion is relatively large, and the amount of carbon formed is very low. Therefore, it is very important to flame-retardant EPDM rubber. [0003] At present, EPDM rubber is used as raw material and flame retardant to prepare flame retardant foam strips, which has a good flame retardant effect, but many formulas contain plasticizers, because plasticizers produce a lot of smoke when they burn , so that the smoke density is higher, which makes the flame retardant effect not good. Even if the paraffin oil with high flash point and low volatility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K3/26C08K3/22C08K3/32C08J9/10
CPCC08J9/103C08J9/0066C08J2323/16
Inventor 刘爱芹
Owner 临朐瑞星塑胶制品有限公司
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