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Crosslinking agent algorithm for hydroxy acrylic resin coatings
2017-8-1 17:00:40
Crosslinking agent algorithm for hydroxy acrylic resin coatings
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 two for the next calculation.
W (polyamide) % = (56100 * f)/amine value * epoxy value n - 3 type: in 56100 -- -- -- -- -- -- -- -- -- -- KOH (* 10 mol) f -- -- -- -- -- -- -- -- -- -- -- -- -- coefficient, f = (n + 2)/(n + 1), n is ethylidene polyamine in CHCH nn22 - the number of repeat minus 1
3. Dosage of ketonine
W (ketone imide) % = (crosslinking agent/epoxy equivalent) * 100 the "equivalent" refers to the fully reflect quite sometimes ketone imide and water on the manufacturers product specifications in addition to give "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).
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 = (1.3 ~ 1.4) K, K is the mass fraction of epoxy in epoxy resin, %.
5. Calculation of acid anhydride crosslinking agent
When using a anhydride crosslinking agent: W (anhydride) % = C * (acid anhydride/epoxy equivalent) * 100 type: anhydride equivalent = anhydride molecular mass/anhydride base number of C as the correction coefficient, the value of different occasions with different C = 0.85, general acid anhydride
Chinese name: Diethyl toluene diamine(DETDA)
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 two for the next calculation.
W (polyamide) % = (56100 * f)/amine value * epoxy value n - 3 type: in 56100 -- -- -- -- -- -- -- -- -- -- KOH (* 10 mol) f -- -- -- -- -- -- -- -- -- -- -- -- -- coefficient, f = (n + 2)/(n + 1), n is ethylidene polyamine in CHCH nn22 - the number of repeat minus 1
3. Dosage of ketonine
W (ketone imide) % = (crosslinking agent/epoxy equivalent) * 100 the "equivalent" refers to the fully reflect quite sometimes ketone imide and water on the manufacturers product specifications in addition to give "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).
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 = (1.3 ~ 1.4) K, K is the mass fraction of epoxy in epoxy resin, %.
5. Calculation of acid anhydride crosslinking agent
When using a anhydride crosslinking agent: W (anhydride) % = C * (acid anhydride/epoxy equivalent) * 100 type: anhydride equivalent = anhydride molecular mass/anhydride base number of C as the correction coefficient, the value of different occasions with different C = 0.85, general acid anhydride
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packingļ¼ 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).
0.6, using chloric acid anhydride or organic metal salts such as xacylic acid; 1.0. Cross-linking agent with tertiary amine; 0.8, using tertiary amine and M (BF) n salt
When using two kinds of acid anhydride mixture crosslinked 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) and 100 g epoxy anhydride amount used in PU crosslinking agent and PU PU products containing hydroxyl component ratio, the calculation method of proportioning calculation formula 1 OH value = 42 x 100 PU crosslinking agent requirements - * - * (NCO/OH ratio) 561 NCO % type: OH value, hydroxyl value containing hydroxyl resin, PU mgKOH/g561 - constant 42 - NCO equivalent 100 - PU 2 hydroxyl value set solid hydroxyl resin content (mgKOH/g), hydroxyl percentage (%), hydroxyl equivalent the conversion relationship between the hydroxyl content = (17 / hydroxyl equivalent) * 100 hydroxyl value = 33 * hydroxyl content
Hydroxyl equivalent: with a hydroxyl resin weight quite a bit, E (OH) = the hydroxyl number of hydroxyl resin molecular weight/resin content: every 100 grams of weight percent of hydroxyl resin, OH % = (N) (hydroxyl number * 17 / resin weight) * 100% 3 PU polyester paint containing hydroxyl value in the resin was 62% (non-volatile portion of the resin was 70%, the solid hydroxyl value of 120), for calculating 100 PU polyester paint should match the PJ01 NCO % 9-50 crosslinking agent how much (design requirements NCO: OH is 1.2:1)? The formulae of the calculation formula 12042 x (100 x 70% x 62%) and pj1-50 crosslinking agent were equal to 43.3 and 5619
It should be a pj1-50 crosslinking agent with NCO % of 9 and 43.3. Note: generally due to consideration of the adverse reactions of crosslinking agent and solvent, air and main paint; NCO/OH is generally greater than or equal to 1.2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
0.6, using chloric acid anhydride or organic metal salts such as xacylic acid; 1.0. Cross-linking agent with tertiary amine; 0.8, using tertiary amine and M (BF) n salt
When using two kinds of acid anhydride mixture crosslinked 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) and 100 g epoxy anhydride amount used in PU crosslinking agent and PU PU products containing hydroxyl component ratio, the calculation method of proportioning calculation formula 1 OH value = 42 x 100 PU crosslinking agent requirements - * - * (NCO/OH ratio) 561 NCO % type: OH value, hydroxyl value containing hydroxyl resin, PU mgKOH/g561 - constant 42 - NCO equivalent 100 - PU 2 hydroxyl value set solid hydroxyl resin content (mgKOH/g), hydroxyl percentage (%), hydroxyl equivalent the conversion relationship between the hydroxyl content = (17 / hydroxyl equivalent) * 100 hydroxyl value = 33 * hydroxyl content
Hydroxyl equivalent: with a hydroxyl resin weight quite a bit, E (OH) = the hydroxyl number of hydroxyl resin molecular weight/resin content: every 100 grams of weight percent of hydroxyl resin, OH % = (N) (hydroxyl number * 17 / resin weight) * 100% 3 PU polyester paint containing hydroxyl value in the resin was 62% (non-volatile portion of the resin was 70%, the solid hydroxyl value of 120), for calculating 100 PU polyester paint should match the PJ01 NCO % 9-50 crosslinking agent how much (design requirements NCO: OH is 1.2:1)? The formulae of the calculation formula 12042 x (100 x 70% x 62%) and pj1-50 crosslinking agent were equal to 43.3 and 5619
It should be a pj1-50 crosslinking agent with NCO % of 9 and 43.3. Note: generally due to consideration of the adverse reactions of crosslinking agent and solvent, air and main paint; NCO/OH is generally greater than or equal to 1.2.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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