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Efficient halogen-free flame retardant rubber system as well as preparation method thereof

A technology of intumescent flame retardant and rubber, which is applied in the field of flame retardant rubber system and its preparation, which can solve the problems of insufficient environmental protection, solvent toxicity, complicated modification methods, etc., achieve excellent flame retardant effect, improve mechanical properties, and improve the modification method simple effect

Active Publication Date: 2015-04-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent application with the publication number CN 102796283A discloses "a composite intumescent flame retardant and its preparation method". group, which has a good effect on forming a better interface between expanded graphite and the substrate, but the modification method is complicated, and the solvents involved are highly toxic and not environmentally friendly

Method used

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  • Efficient halogen-free flame retardant rubber system as well as preparation method thereof
  • Efficient halogen-free flame retardant rubber system as well as preparation method thereof
  • Efficient halogen-free flame retardant rubber system as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Put 100 parts of nitrile rubber into the kneader and knead to form a wrapped roll, then add 30 parts of carbon black, 2 parts of zinc borate, 1 part of graphite powder and 1 part of anti-aging agent A, and then add 0.5 parts of peroxide Dicumyl vulcanizing agent and 0.1 part of vulcanization accelerator DM are fully mixed to obtain a mixed rubber; the obtained mixed rubber is pressed in a flat vulcanizer at 160 ° C for 10 minutes to form a flame-retardant nitrile rubber system .

[0051] The tensile strength of the prepared rubber system is 28.8 MPa, the LOI is 30.6%, and the UL-94 is V-1.

Embodiment 2

[0053] Put 100 parts of nitrile rubber into the kneader and knead to form a wrapped roll, then add 40 parts of carbon black, 6 parts of zinc borate, 2 parts of graphite powder and 2 parts of anti-aging agent A, and then add 1 part of peroxide Dicumyl vulcanizing agent and 1 part of vulcanization accelerator DM are fully mixed to obtain a mixed rubber; the obtained mixed rubber is pressed in a flat vulcanizer at 160°C for 10 minutes to form a flame-retardant nitrile rubber system .

[0054] The tensile strength of the prepared rubber system is 26.5 MPa, the LOI is 35.8%, and the UL-94 is V-0.

Embodiment 3

[0056] Put 100 parts of ethylene-propylene rubber into the mixer and knead to form a wrapped roll, then add 50 parts of precipitated silica, 5 parts of aluminum hypophosphite, 5 parts of expanded graphite and 2 parts of anti-aging agent 4010, and then add 1.5 parts of dicumyl peroxide vulcanizing agent and 0.1 part of vulcanization accelerator DM are fully mixed to obtain a compound rubber; the obtained compound rubber is held in a flat vulcanizer at 150°C for 10 minutes and pressed into a plate to obtain a flame retardant Ethylene Propylene Rubber System.

[0057] The tensile strength of the prepared rubber system is 20.3 MPa, the LOI is 28.9%, and the UL-94 is V-0.

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Abstract

The invention provides an efficient halogen-free flame retardant rubber system which comprises the following components in parts by weight: 100 parts of rubber, 30-50 parts of a fortifier, 0-10 parts of a structural controller, 0.5-2 parts of a vulcanizing agent, 0.1-2 parts of an accelerant, 1-20 parts of a flame retardant and 1-20 parts of a synergist. The tensile strength of the rubber system is 5.4-33.8MPa, LOI is 28.9-45.5% and UL-94 is V-1 to V-0. The invention further provides a preparation method of the system. According to the rubber system provided by the invention, as the flame retardant and the flame retardant synergist which are matched with the rubber system, since the addition is a little, mechanical property is hardly affected and a good flame retardant effect can be further realized.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant rubber systems and their preparation, and in particular relates to a high-efficiency halogen-free intumescent flame-retardant rubber system and a preparation method thereof. Background technique [0002] Rubber is the basic raw material of the rubber industry. Because its molecular chain can be cross-linked, the cross-linked rubber has the ability to recover quickly when it is deformed by an external force, and has good physical and mechanical properties and chemical stability. Blending is carried out to learn from each other to obtain a rubber blend with better performance. Therefore, it has been widely used in the manufacture of tires, hoses, tapes, cables, medical equipment and other rubber products since it was discovered and industrialized. However, rubber needs to be vulcanized during the processing process. Once the vulcanized pure rubber cannot self-extinguish after burning, it wil...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L23/16C08L9/06C08L11/00C08L83/04C08L7/00C08L9/00C08K13/02C08K3/04C08K3/38C08K5/14C08K3/32C08K13/04C08K7/24C08K13/06C08K9/04C08K9/06C08K5/3492C08K3/34
CPCC08K3/04C08K3/32C08K3/346C08K3/38C08K5/34922C08K5/5313C08K7/24C08K9/04C08K9/06C08K13/06C08K2003/323C08K2003/327C08K2003/387C08L7/00C08L9/00C08L9/02C08L9/06C08L11/00C08L23/16C08L83/04C08L2201/02C08L2201/22
Inventor 王玉忠朱晨曹警予邓聪汪秀丽
Owner SICHUAN UNIV
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