CN101831080A - Endotherm-exotherm equilibrious foaming agent - Google Patents
Endotherm-exotherm equilibrious foaming agent Download PDFInfo
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- CN101831080A CN101831080A CN200910037752A CN200910037752A CN101831080A CN 101831080 A CN101831080 A CN 101831080A CN 200910037752 A CN200910037752 A CN 200910037752A CN 200910037752 A CN200910037752 A CN 200910037752A CN 101831080 A CN101831080 A CN 101831080A
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Abstract
The invention discloses an endotherm-exotherm equilibrious foaming agent, which comprises the following components in part by weight: 20 to 80 parts of bicarbonate, 20 to 80 parts of azodicarbonamide, 1 to 15 parts of organic carboxylic acid and 0.00001 to 1 part of N,N-dicyclohexyl carbodiimide. In the endotherm-exotherm equilibrious foaming agent, the organic carboxylic acid and the N,N-dicyclohexyl carbodiimide are added besides the bicarbonate and the azodicarbonamide, so the prepared foaming agent has the advantages of no ammonia odor, high foaming efficiency, uniform foaming pores and the like.
Description
Technical field
The present invention relates to a kind of whipping agent.
Background technology
According to the mode difference that produces gas in foaming process, whipping agent generally can be divided into pneumatogen and chemical foaming agent, and wherein chemical foaming agent is a whipping agent commonly used in the plastic foam product.Common whipping agent has inorganic foaming agent and organic blowing agent.The former is generally heat absorbing type (as NaHCO
3), because foaming process absorbs a large amount of heats, be difficult for bubble and cause expansion ratio low, directly influence the density of product; The latter is generally heat release type (as AC), and single heat release type whipping agent, can produce bubbling, and phenomenon such as bubble because of emitting a large amount of heats suddenly again, and is unfavorable to the performance of goods.Therefore, good whipping agent system should be that the suction exothermic effect is in a basic balance, the balanced mild system of decomposition course.But the suction exothermic equilibrium type whipping agent based on supercarbonate and Cellmic C 121 can discharge ammonia at present, makes goods have the ammonia stink, and environment is polluted, corrosion copper zinc-tin spare.Simultaneously, because the rate of decomposition of supercarbonate and Cellmic C 121 is inconsistent, cause goods abscess inequality easily.
Summary of the invention
Purpose of the present invention is exactly the weak point of inhaling exothermic equilibrium type whipping agent at existing, tradition is inhaled exothermic equilibrium type whipping agent improve, and provides a kind of no ammonia, foaming abscess to inhale exothermic equilibrium type whipping agent uniformly.
Suction exothermic equilibrium type whipping agent of the present invention, this whipping agent is composed of the following components by weight:
20～80 parts of supercarbonates
20～80 parts of Cellmic C 121s
1～15 part of organic carboxyl acid
N, 0.00001～1 part of N-dicyclohexylcarbodiimide.
In above-mentioned foaming agent composotion, supercarbonate is ammonium hydrogencarbonate, sodium bicarbonate, saleratus, Magnesium hydrogen carbonate, Calcium hydrogen carbonate or its mixture wherein most preferably sodium bicarbonate or ammonium hydrogencarbonate.
Used organic carboxyl acid is meant monobasic, binary, ternary or quaternary carboxylic acid or its mixture of the straight or branched that contains 2～36 carbon atoms in the foaming agent composotion of the present invention, can be acetate, toxilic acid, oxysuccinic acid, citric acid, hexanodioic acid, sebacic acid, palmitic acid, stearic acid, montanic acid, wherein most preferably citric acid, hexanodioic acid, sebacic acid, palmitic acid, stearic acid, montanic acid.
Suction exothermic equilibrium type whipping agent of the present invention is mainly used in product of rubber and plastic, is particularly suitable for polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer foam materials such as (EVA).
Suction exothermic equilibrium type whipping agent of the present invention can be prepared into powdery solid by the high-speed mixing method, also can by extrude, method such as spraying is prepared into sheet or granular.Wherein, with sheet and granular be optimum.
Suction exothermic equilibrium type whipping agent of the present invention can use separately, also can with urea.Blowing promotors such as zinc oxide mix use.For the low material of processing temperature, mix result of use with frothing aid better.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention has been by having added organic carboxyl acid and N in supercarbonate and Cellmic C 121, the N-dicyclohexylcarbodiimide, and regulate its blending ratio, make the whipping agent that makes not produce ammonia in use, thereby avoided air is polluted.(2) material of the present invention's use is cheap, has reduced the cost of whipping agent.(3) whipping agent of the present invention efficient height when foaming, abscess is even.
Embodiment
Further specify the present invention below by embodiment and Comparative Examples.
Embodiment 1
Get Cellmic C 121 300g, sodium bicarbonate 100g, hexanodioic acid 50g, N, N-dicyclohexylcarbodiimide 1.0g mixes, and in 150 ℃ of thermostatically heating 30min, measuring pH value is 7, no ammonia stink.
Comparative Examples 1
Get Cellmic C 121 300g, sodium bicarbonate 100g, in 150 ℃ of thermostatically heating 30min, measuring PH is 11, and the strong ammonia stink is arranged.
From embodiment 1 and Comparative Examples 1 as can be seen, embodiment 1 can obviously reduce the release of ammonia.
Embodiment 2
Get Cellmic C 121 100g, sodium bicarbonate 300g, stearic acid 10g, N, N-dicyclohexylcarbodiimide 0.05g mixes, and the measurement gas forming amount is 142mL/g.
Comparative Examples 2
Get Cellmic C 121 100g, sodium bicarbonate 300g mixes, and measures gas forming amount and be 136mL/g. from embodiment 2 and Comparative Examples 2 as can be seen, and the foaming efficient of embodiment 2 is higher.
Embodiment 3
Get Cellmic C 121 300g, sodium bicarbonate 200g, citric acid 20g, N, N-dicyclohexylcarbodiimide 0.4g mixes.
Comparative Examples 3
Get Cellmic C 121 300g, sodium bicarbonate 200g mixes.
Embodiment 4
The prescription of embodiment 3 and Comparative Examples 3 is carried out frothing test.100 parts of raw material: PVC, 8 parts of foaming control agent ZB530,5 parts of ACR201,10 parts in lime carbonate, 0.5 part of organotin stabilizer, 0.3 part of oxidized polyethlene wax, 1 part of whipping agent.Extruder temperature is set: 170 ℃, and 180 ℃, 185 ℃ (test-results sees Table 1).
From table 1, embodiment 3 foaming effects are better, and mechanical property is better.
Embodiment 5
Get Cellmic C 121 300g, sodium bicarbonate 50g, stearic acid 5g, citric acid 3g, N, N-dicyclohexylcarbodiimide 1.0g mixes.
Comparative Examples 4
Get Cellmic C 121 300g, sodium bicarbonate 50g mixes.
Embodiment 6
With embodiment 5, the prescription of Comparative Examples 4 carries out frothing test.100 parts of raw material: EVA, 1.5 parts in zinc oxide, 1.0 parts of dicumyl peroxides, 2.0 parts of whipping agents.Two rollers 2min that plasticates, vulcanizing press is pressed into thick 1cm, the cake of diameter 15cm, 180 ℃ of moulding 5min (test-results sees Table 2).
From table 2, the foaming efficient height of embodiment 5, products appearance is good.
The test data of embodiment 3 and Comparative Examples 3 explanation in the table 1, suction exothermic equilibrium type whipping agent of the present invention obviously is better than the suction exothermic equilibrium type whipping agent of Comparative Examples 3.
The test data of embodiment 5 and Comparative Examples 4 explanation in the table 2, suction exothermic equilibrium type whipping agent of the present invention obviously is better than the suction exothermic equilibrium type whipping agent of Comparative Examples 4.
Table 1. embodiment 3 and the foaming experiment of Comparative Examples 3 prescriptions in PVC
| Project | Outward appearance | Tensile strength/MPa |
| Embodiment 3 | Bubble is empty thick, has and steeps phenomenon | ??16.8 |
| Comparative Examples 3 | Bubble is empty evenly fine and smooth | ??16.9 |
Table 2. embodiment 5 and the foaming experiment of Comparative Examples 4 prescriptions in EVA
| Project | Expansion ratio | Outward appearance |
| Embodiment 5 | ??1.52 | Bubble is evenly empty |
| Comparative Examples 4 | ??1.5 | Idol has and steeps |
Claims (5)
1. inhale exothermic equilibrium type whipping agent for one kind, it is characterized in that this whipping agent is composed of the following components by weight:
20～80 parts of supercarbonates
20～80 parts of Cellmic C 121s
1～15 part of organic carboxyl acid
N, 0.00001～1 part of N-dicyclohexylcarbodiimide.
2. according to the described whipping agent of claim 1, it is characterized in that described supercarbonate is ammonium hydrogencarbonate, sodium bicarbonate, saleratus, Magnesium hydrogen carbonate, Calcium hydrogen carbonate or its mixture.
3. according to the described whipping agent of claim 1, it is characterized in that described organic carboxyl acid is monobasic, binary, ternary or the quaternary carboxylic acid that contains the straight or branched of 2～36 carbon atoms.
4. according to the described whipping agent of claim 3, it is characterized in that described organic carboxyl acid is acetate, toxilic acid, oxysuccinic acid, citric acid, hexanodioic acid, sebacic acid, palmitic acid, stearic acid or montanic acid.
5. according to the described whipping agent of claim 4, it is characterized in that described organic carboxyl acid is citric acid, hexanodioic acid, sebacic acid, palmitic acid, stearic acid or montanic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100377524A CN101831080B (en) | 2009-03-10 | 2009-03-10 | Endotherm-exotherm equilibrious foaming agent |
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| CN2009100377524A CN101831080B (en) | 2009-03-10 | 2009-03-10 | Endotherm-exotherm equilibrious foaming agent |
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| CN101831080A true CN101831080A (en) | 2010-09-15 |
| CN101831080B CN101831080B (en) | 2011-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151594A (en) * | 2014-06-30 | 2014-11-19 | 安徽恒森新材料有限公司 | Foaming agent synergistic auxiliary agent |
| CN111875281A (en) * | 2020-08-11 | 2020-11-03 | 衡阳市九州建材有限公司 | Powdery water reducing agent and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544525A (en) * | 2003-11-27 | 2004-11-10 | 中国科学院长春应用化学研究所 | Method for preparing biodegradable poly-lactic acid foam plastic |
| CN101215391B (en) * | 2007-12-29 | 2011-02-02 | 谭成章 | Method for preparing chlorinated polyethylene modified butadiene acrylonitrile rubber foaming material |
-
2009
- 2009-03-10 CN CN2009100377524A patent/CN101831080B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104151594A (en) * | 2014-06-30 | 2014-11-19 | 安徽恒森新材料有限公司 | Foaming agent synergistic auxiliary agent |
| CN111875281A (en) * | 2020-08-11 | 2020-11-03 | 衡阳市九州建材有限公司 | Powdery water reducing agent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101831080B (en) | 2011-12-28 |
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Owner name: GUANGDONG BOSI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGZHOU BOSI PLASTIC PIGMENTS CO., LTD. |
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Address after: 510530 Guangdong city of Guangzhou province Luogang District Yun Hing Road No. 7 Patentee after: Guangdong Persia Technology Co., Ltd. Address before: 510530, C1, No. 22, Po Po (Baiyun) Industrial Zone, Guangzhou, Guangdong Patentee before: Guangzhou Bosi Plastic Pigments Limited Co., Ltd. |