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The calculation method of coating crosslinking agent
2017-8-12 12:13:28
The calculation method of coating crosslinking agent
1. Amine crosslinking agent
W (100 quality copies required amine resin crosslinking agent quality copies) / % = (amine/epoxy equivalent) * 100 = number of resin quality (amine molecular mass * 100 copies resin)/active hydrogen atoms in molecules (amine number * epoxy equivalent) = (molecular mass of amine/amine molecules in the active hydrogen atoms) * epoxy value = (molecular mass of amine/amine molecules in the active hydrogen atoms) * (epoxy group quality percentage/epoxy molecular mass)
2. Low relative molecular weight polyamide dosage calculation
Relatively low molecular weight polyamide products indicators commonly used instructions "amine value" of the index to measure the amino, Chen Sheng sharp that it can't normal correctly reflect the number of active hydrogen atom, so you can't simply be amine values as the basis of calculating dosage of polyamide. For a typical polyamide, you can use the lower formula.
W (polyamide) % = (56100 / amine value * f) * epoxy value n - 3 formula: 56100 - -- -koh (* 10 mol) f? -- -- -- -- -- -- - coefficient, f? N plus 2 over n plus 1, n is the number of CHCH in the polyethylene polyamide minus 1, n, n, 2, 2
3. Dosage of ketonine
W (ketoimide) % = (crosslink equivalent/epoxy equivalent) * 100
The equivalent of "equivalent" is equivalent to the total reaction of ketone amine and water
Sometimes on the manufacturers product specifications in addition to give the "equivalent", also will give "effective amine content" refers to the ketone imide reaction and water completely freed the reactivity of polyamine (expressed as a volume or quality score).
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
1. Amine crosslinking agent
W (100 quality copies required amine resin crosslinking agent quality copies) / % = (amine/epoxy equivalent) * 100 = number of resin quality (amine molecular mass * 100 copies resin)/active hydrogen atoms in molecules (amine number * epoxy equivalent) = (molecular mass of amine/amine molecules in the active hydrogen atoms) * epoxy value = (molecular mass of amine/amine molecules in the active hydrogen atoms) * (epoxy group quality percentage/epoxy molecular mass)
2. Low relative molecular weight polyamide dosage calculation
Relatively low molecular weight polyamide products indicators commonly used instructions "amine value" of the index to measure the amino, Chen Sheng sharp that it can't normal correctly reflect the number of active hydrogen atom, so you can't simply be amine values as the basis of calculating dosage of polyamide. For a typical polyamide, you can use the lower formula.
W (polyamide) % = (56100 / amine value * f) * epoxy value n - 3 formula: 56100 - -- -koh (* 10 mol) f? -- -- -- -- -- -- - coefficient, f? N plus 2 over n plus 1, n is the number of CHCH in the polyethylene polyamide minus 1, n, n, 2, 2
3. Dosage of ketonine
W (ketoimide) % = (crosslink equivalent/epoxy equivalent) * 100
The equivalent of "equivalent" is equivalent to the total reaction of ketone amine and water
Sometimes on the manufacturers product specifications in addition to give the "equivalent", also will give "effective amine content" refers to the ketone imide reaction and water completely freed the reactivity of polyamine (expressed as a volume or quality score).
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
4. Calculation of manny's alkaline dosage
The product of the condensation reaction of phenol, aldehydes and amine becomes mannioid. The classic mannil is produced by phenol, formaldehyde and ethylenediamine reaction and is widely used. The amount of crosslinking agent calculated in accordance with the maximum adhesion strength is consistent with the amount of crosslinking agent. Q = K (1.3 ~ 1.4)
In the formula, K is the mass fraction of epoxy in epoxy resin. %.
The ratio of crosslinking agent was calculated by using the dosage of 5 acid anhydride
5.1 when using an anhydride cross-linking agent: W (acid anhydride) % = C * (acid anhydride equivalent/epoxy equivalent) * 100
In the formula: acid anhydride equivalent = the number of molecular mass/acid anhydride with acid anhydride (C) is the correction factor. Different values of C = 0.85, general acid anhydride are used in different situations
0.6, using chloric acid anhydride or organic metal salts such as xacylic acid;
1.0,? Use of tertiary amine as crosslinking agent;
0.8,? We use tertiary and M (BF) n salts
5.2 when using two acid anhydride mixtures to crosslink epoxy resin
1) convert epoxy-equivalent to epoxy
2) the equivalent of each anhydride in mixed acid anhydride is calculated by mixing ratio
3) the equivalent of 100g of mixed acid anhydride
4) find the amount of anhydride in 100g epoxy resin
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
4. Calculation of manny's alkaline dosage
The product of the condensation reaction of phenol, aldehydes and amine becomes mannioid. The classic mannil is produced by phenol, formaldehyde and ethylenediamine reaction and is widely used. The amount of crosslinking agent calculated in accordance with the maximum adhesion strength is consistent with the amount of crosslinking agent. Q = K (1.3 ~ 1.4)
In the formula, K is the mass fraction of epoxy in epoxy resin. %.
The ratio of crosslinking agent was calculated by using the dosage of 5 acid anhydride
5.1 when using an anhydride cross-linking agent: W (acid anhydride) % = C * (acid anhydride equivalent/epoxy equivalent) * 100
In the formula: acid anhydride equivalent = the number of molecular mass/acid anhydride with acid anhydride (C) is the correction factor. Different values of C = 0.85, general acid anhydride are used in different situations
0.6, using chloric acid anhydride or organic metal salts such as xacylic acid;
1.0,? Use of tertiary amine as crosslinking agent;
0.8,? We use tertiary and M (BF) n salts
5.2 when using two acid anhydride mixtures to crosslink epoxy resin
1) convert epoxy-equivalent to epoxy
2) the equivalent of each anhydride in mixed acid anhydride is calculated by mixing ratio
3) the equivalent of 100g of mixed acid anhydride
4) find the amount of anhydride in 100g epoxy resin
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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