News Details
Peroxide crosslinking agent
2017-2-23 17:50:19
Peroxide crosslinking agent, crosslinking agent is a kind of heat release free radicals to activation of polymer chain, to make them react and crosslinking of an auxiliary to each other. Linear thermoplastic resin is obtained by the crosslinking reaction between polymer chain can be three-dimensional network structure, this structure can improve the plastic heat resistance, poor mechanical strength, higher shortcomings, especially improve the thermal stability of plastic under high temperature and chemical corrosion resistance, make its have certain performance of engineering plastics to expand its use. Some processing technology such as polyolefin foam molding without crosslinking agent to help it will be difficult to implement, particularly as polypropylene foam more can't forming.
Between the linear polymer crosslinked usually by using ray irradiation or chemical reaction method. There is another possibility of crosslinking methods is to make the water diffusion into the internal silicide ethylene copolymer, by hydrolysis and polycondensation reaction caused by crosslinking form. After. Si - O - Si keys. Vinyl silicone rubber in polyethylene grafted with this method is similar.
Plastic industry is one of the most common crosslinking agent in organic peroxide, if coupled with vinyl siloxane or other unsaturated compound as crosslinking agent, can be produced in the polymer chain grafting cross-linking, to further improve performance.
Peroxide as cross-linking agent in general should satisfy the following conditions:
(1) under the regulation of temperature, the decomposition product should guarantee the crosslinking for quickly, without early response
Tendencies.
(2) occurs only on the crosslinking reaction of the polymer modification.
(3) with elastomer plastic fully compatible.
(4) in the process of transportation, storage and processing must be safe.
(5) less volatile, to avoid the loss in the process of mixing.
(6) in the mixed contain other ingredients such as packing or enhancer, must also be active.
(7) peroxide and its decomposition product must be non-toxic, should meet the requirements of industrial hygiene.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Organic peroxide crosslinking agent
Chemical name of 2, 5 - dimethyl - 2, 5 - double (tert butyl peroxide) hexane
The English name of 2, 5 - Dimethyl - 2, 5 - bis (tert - butyl peroxy) hexane, AD
Nature of the commodity form has two kinds: the purity of 90% or so to pale yellow liquid (relative density 0.85, freezing point 8 ℃); Purity is 40 ~ 50% of white powder, relative molecular mass of 290. 55 ℃ tasted the freezing point of 4 ℃, flash point,
Ignition point 175 ℃. Theory of active oxygen content of 11.02%. The activation energy of 150.7 kJ/mol. Decomposition temperature: 179 ℃ (half-life... 1
Minutes), 118 ~ 119 ℃ (half-life.. 10 h). Half-life: 17 h (115 ℃), 2.8 h (130 ℃), 0.4 h (145 ℃),
17 minutes (150 ℃), 5.8 minutes (160 ℃), 0.9 minutes (190 ℃).
Use this product for high temperature cross-linking agent. Suitable for polyethylene, chlorinated polyethylene, ethylene/vinyl acetate copolymer. Tensile strength and hardness, elongation and low compression set. Mixing device can be used in general at higher temperature range and the filler mix, no coke burning. This product as dicumyl peroxide crosslinking efficiency, but gasification and bad smell is small. This product also can be used as unsaturated polyester, silicone rubber and epdm, such as crosslinking agent.
Chemical name of 2, 5 - dimethyl - 2, 5 - double (tert butyl peroxide) acetylene - 3
English name 2, 5 - Dimethyl - 2, 5 - bis (tert - butylperoxy) hexyne - 3, YD
Nature of the commodity form has two kinds: the purity of.. About 90% is a pale yellow liquid (relative density.. 0.886, freezing point.. 8 ℃); 40 ~ 50% of white powder purity, molecular weight.. 286. Light is tasted > 92 ℃, melting point.. 188 ℃.
The theory of active oxygen content is 11.17%. Decomposition temperature: 193 ℃ (half-life 1 min), 127 ~ 128 ℃ (half-life 10 h).
Activation energy.. 151.6 kJ/mol. Half-life: 49 h (115 ℃), 8.2 h (130 ℃), 1.7 (145 ℃), 0.3 h h (160 ℃).
Use this product for high temperature cross-linking agent. Suitable for high density and low density polyethylene, ethylene/vinyl acetate copolymer, unsaturated polyester plastic, etc. Crosslinking efficiency is not affected by acid, alkali and neutral packing. This product also can be used as silicone rubber, fluorine rubber,
Ethylene propylene rubber crosslinking agent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Between the linear polymer crosslinked usually by using ray irradiation or chemical reaction method. There is another possibility of crosslinking methods is to make the water diffusion into the internal silicide ethylene copolymer, by hydrolysis and polycondensation reaction caused by crosslinking form. After. Si - O - Si keys. Vinyl silicone rubber in polyethylene grafted with this method is similar.
Plastic industry is one of the most common crosslinking agent in organic peroxide, if coupled with vinyl siloxane or other unsaturated compound as crosslinking agent, can be produced in the polymer chain grafting cross-linking, to further improve performance.
Peroxide as cross-linking agent in general should satisfy the following conditions:
(1) under the regulation of temperature, the decomposition product should guarantee the crosslinking for quickly, without early response
Tendencies.
(2) occurs only on the crosslinking reaction of the polymer modification.
(3) with elastomer plastic fully compatible.
(4) in the process of transportation, storage and processing must be safe.
(5) less volatile, to avoid the loss in the process of mixing.
(6) in the mixed contain other ingredients such as packing or enhancer, must also be active.
(7) peroxide and its decomposition product must be non-toxic, should meet the requirements of industrial hygiene.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Organic peroxide crosslinking agent
Chemical name of 2, 5 - dimethyl - 2, 5 - double (tert butyl peroxide) hexane
The English name of 2, 5 - Dimethyl - 2, 5 - bis (tert - butyl peroxy) hexane, AD
Nature of the commodity form has two kinds: the purity of 90% or so to pale yellow liquid (relative density 0.85, freezing point 8 ℃); Purity is 40 ~ 50% of white powder, relative molecular mass of 290. 55 ℃ tasted the freezing point of 4 ℃, flash point,
Ignition point 175 ℃. Theory of active oxygen content of 11.02%. The activation energy of 150.7 kJ/mol. Decomposition temperature: 179 ℃ (half-life... 1
Minutes), 118 ~ 119 ℃ (half-life.. 10 h). Half-life: 17 h (115 ℃), 2.8 h (130 ℃), 0.4 h (145 ℃),
17 minutes (150 ℃), 5.8 minutes (160 ℃), 0.9 minutes (190 ℃).
Use this product for high temperature cross-linking agent. Suitable for polyethylene, chlorinated polyethylene, ethylene/vinyl acetate copolymer. Tensile strength and hardness, elongation and low compression set. Mixing device can be used in general at higher temperature range and the filler mix, no coke burning. This product as dicumyl peroxide crosslinking efficiency, but gasification and bad smell is small. This product also can be used as unsaturated polyester, silicone rubber and epdm, such as crosslinking agent.
Chemical name of 2, 5 - dimethyl - 2, 5 - double (tert butyl peroxide) acetylene - 3
English name 2, 5 - Dimethyl - 2, 5 - bis (tert - butylperoxy) hexyne - 3, YD
Nature of the commodity form has two kinds: the purity of.. About 90% is a pale yellow liquid (relative density.. 0.886, freezing point.. 8 ℃); 40 ~ 50% of white powder purity, molecular weight.. 286. Light is tasted > 92 ℃, melting point.. 188 ℃.
The theory of active oxygen content is 11.17%. Decomposition temperature: 193 ℃ (half-life 1 min), 127 ~ 128 ℃ (half-life 10 h).
Activation energy.. 151.6 kJ/mol. Half-life: 49 h (115 ℃), 8.2 h (130 ℃), 1.7 (145 ℃), 0.3 h h (160 ℃).
Use this product for high temperature cross-linking agent. Suitable for high density and low density polyethylene, ethylene/vinyl acetate copolymer, unsaturated polyester plastic, etc. Crosslinking efficiency is not affected by acid, alkali and neutral packing. This product also can be used as silicone rubber, fluorine rubber,
Ethylene propylene rubber crosslinking agent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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