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Degradable nitrile butadiene rubber sealant

A nitrile rubber and sealant technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of nitrile rubber sealants that are difficult to reuse, difficult to degrade naturally, and not very perfect, and achieve Low cost, high solid content, improved cold resistance and thermal oxygen aging resistance

Active Publication Date: 2012-12-26
GUANGDONG SANVO CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nitrile rubber sealant prepared by the traditional process is difficult to reuse after the first use, and the domestic solid waste recycling mechanism is not perfect. The waste rubber after dismantling cannot be effectively recycled and is discarded in the environment. It is difficult to degrade naturally. If it is disposed of by landfill, it will easily cause environmental pollution. Even if these waste rubbers are disposed of by traditional incineration, the products after combustion, such as carbon monoxide and sulfur dioxide, will easily cause secondary pollution and bring environmental health problems. The enormous pressure of

Method used

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  • Degradable nitrile butadiene rubber sealant
  • Degradable nitrile butadiene rubber sealant
  • Degradable nitrile butadiene rubber sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. According to the proportion by weight, respectively masticate 20 parts of nitrile rubber and 5 parts of chlorinated polyethylene, and then masticate the rubber, 5 parts of hydrogenated rosin, 0.25 parts of sodium stearate, light calcium carbonate 30 parts, 5 parts of aluminum tripolyphosphate, 0.05 parts of JL-G02 filler modifier, 0.01 part of nano-ceramic high-temperature antioxidant, 1 part of epoxy soybean oil, 0.001 part of photocatalyst titanium dioxide dispersion, JHSM biodegradable masterbatch 0.1 part is mixed evenly, cooled and chopped into mixed colloidal particles.

[0029] 2. According to the proportion by weight, add 45 parts of butyl acetate and 5 parts of methylcyclohexane into the reaction kettle, put the mixed rubber particles obtained in the above preparation method 1 into the stirring state, and stir until the glue is uniform, to obtain finished product.

Embodiment 2

[0031] 1. According to the proportioning by weight, 21 parts of nitrile rubber and 7 parts of chlorinated polyethylene are plasticized respectively, and then the plasticized rubber, 8 parts of phenolic resin, 0.1 part of iron stearate, organic high-purity montmorillonite 20 parts, 10 parts of light calcium carbonate, 1 part of aluminum tripolyphosphate, 0.1 part of JL-G02 filler modifier, 0.01 part of nano-ceramic high-temperature antioxidant, 2 parts of epoxy soybean oil, 0.001 part of photocatalyst titanium dioxide dispersion 1 part, 0.02 part of metalloporphyrin, 2 parts of JHSM biodegradable masterbatch, mixed evenly, cooled and chopped into mixed colloidal particles.

[0032] 2. According to the proportion by weight, add 35 parts of butyl acetate and 15 parts of methylcyclohexane into the reaction kettle, put the mixed rubber particles obtained in the above preparation method 1 into the stirring state, and stir until the glue is uniform, to obtain finished product.

Embodiment 3

[0034] 1. According to the proportion by weight, 15 parts of nitrile rubber and 5 parts of chlorinated polyethylene are masticated respectively, and then the masticated rubber, 8 parts of coumarone resin, 0.5 part of calcium stearate, and light 20 parts of calcium carbonate, 5 parts of aluminum tripolyphosphate, 0.3 parts of JL-G02 filler modifier, 0.01 part of nano-ceramic high-temperature antioxidant, 3 parts of epoxy soybean oil, 0.008 parts of metal porphyrin, JHSM biodegradable parent The 3 parts of the material were mixed evenly, cooled and chopped into mixed colloidal particles.

[0035] 2. According to the proportion by weight, add 40 parts of butyl acetate and 10 parts of methylcyclohexane into the reaction kettle, put the mixed rubber particles obtained in the above preparation method 1 into the stirring state, stir until the glue is uniform, and obtain finished product.

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Abstract

The invention relates to a degradable nitrile butadiene rubber sealant which is characterized by comprising the following main components: nitrile butadiene rubber, chlorinated polyethylene, a tackifier, organically chelated metal salt, a filler, a filler modifier, a high-temperature antioxidant, a degradable plasticizer, a photocatalyst, a biodegradable master batch and an environmentally-friendly solvent. The sealant has the advantages that: 1, used waste sealant can be naturally degraded, and by adopting the organically chelated metal salt, the photocatalyst, the biodegradable master batch and the degradable plasticizer, a photodegradation effect and a biodegradation effect are obtained; 2, the nitrile butadiene rubber with low acrylonitrile content is used as a base material, and the chlorinated polyethylene and nano ceramic crystal high-temperature antioxidant are used in coordination with the nitrile butadiene rubber, so that cold resistance and thermal oxidative aging resistance of the sealant are improved; 3, butyl acetate and methyl cyclohexane are used as a mixed solvent, so that environmental protection requirement is met; and 4, the filler modifier has extremely high affinity to the inorganic filler, so that the amount of the filler is increased without affecting sealing property and cost of the sealant is reduced.

Description

technical field [0001] The invention relates to the field of liquid sealant, in particular to a nitrile rubber sealant with good performance, wide applicable temperature range and natural degradation. Background technique [0002] With the rapid development of the automobile industry, the demand for automotive adhesives has greatly increased, and liquid sealant is one of the main ones. Commonly used rubbers for liquid sealants include neoprene, chlorosulfonated polyethylene, and nitrile rubber. Due to their fast drying speed, low price, and easy use, they are widely used in automotive engines, oil pan seals, and mechanical seals. and other fields. As the most typical liquid sealant with excellent oil resistance, nitrile rubber sealant occupies most of the liquid sealant market. [0003] As we all know, the common nitrile rubber sealants on the market are generally composed of nitrile rubber, pigments, fillers, additives, organic solvents, etc. Due to the non-crystallinity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J109/02C09J123/28C09J11/08C09J11/06C09J11/04C09K3/10
Inventor 陈炳耀陈亮李乐
Owner GUANGDONG SANVO CHEM IND TECH
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