CN102875776B - Raw material and preparation method of modified rubber-plastic rain grate - Google Patents
Raw material and preparation method of modified rubber-plastic rain grate Download PDFInfo
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- CN102875776B CN102875776B CN201210428473.2A CN201210428473A CN102875776B CN 102875776 B CN102875776 B CN 102875776B CN 201210428473 A CN201210428473 A CN 201210428473A CN 102875776 B CN102875776 B CN 102875776B
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- rain grate
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Abstract
The invention relates to a raw material of a modified rubber-plastic rain grate and product preparation method. Diisocyanate and low-polymer polyol react to obtain a prepolymer; the prepolymer and polyisocyanate react to produce the raw material of the modified rubber-plastic rain grate; glass microbeads, silica and Moca are added into the raw material of the rain grate and molded for formation, after molding is started, sulfidization is carried out to obtain the rain grate product. Under the premise of having the advantages of light weight, low noise, low construction cost, convenience in construction and the like, the modified rubber-plastic rain grate is greatly improved in bearing capacity and hydraulic permeability.
Description
Technical field
The present invention relates to a kind of preparation method of modification rubber and plastic rain grate raw material of urethane material.And relate to the method for utilizing described raw material to prepare the rain grate.
Background technology
Water grate municipal underground pipeline well head arranges is mainly the metal water grate, and cement water grate and silicon are moulded water grate etc.Wherein, it is large that the metal water grate has intensity, and the advantage that bearing capacity is strong, but its cost is high, easily gets rusty is easily stolen, rolls noise large, the shortcoming such as weight is large.Although cement water grate has advantages of that cost is low, exists equally noise large, the shortcoming that weight is large, and also bearing capacity is smaller.Silicon is moulded the water grate that the water grate is a kind of macromolecule material of rising in recent years, has proportion little, and cost is low, and noise is little, the advantage of easy construction.But find through using, its main drawback is that bearing capacity can not meet the demands, and grinds the out-of-date phenomenon that has fragmentation or fracture at heavier vehicle and occurs.On the other hand, generally outside-10 ℃～+ 20 ℃, the scope of application is narrower for the shrinkage strain temperature of this product; And easily aging, working life is generally only about 5 years.
Summary of the invention
The present invention aims to provide the preparation method of a kind of modification rubber and plastic rain grate raw material and modification rubber and plastic rain grate, technical problem to be solved is, utilize urethane and compound a small amount of inorganic materials to be prepared into modification rubber and plastic rain grate raw material, and utilize described raw material to prepare a kind of modification rubber and plastic rain grate.Modification rubber and plastic rain grate increases substantially its supporting capacity possessing under the prerequisite of lightweight, advantages such as noise is little, cost is low, convenient construction.
Technical scheme of the present invention is as follows:
A kind of preparation method of modification rubber and plastic rain grate raw material is characterized in that:
The first step, preparation performed polymer: the vulcabond by 24.1 ~ 71.4% and 28.6 ~ 75.9% oligomer polyol were reacted under 70 ~ 80 ℃ 2 ~ 3 hours, obtained performed polymer;
Second step, preparation modification rubber and plastic rain grate raw material: the performed polymer of the first step gained with 17.1 ~ 74.7% and 25.3 ~ 82.9% polyisocyanates descended to react 0.5 ~ 1 hour at 60 ~ 70 ℃, made modification rubber and plastic rain grate raw material;
Described per-cent is mass percent.
Described vulcabond is two kinds of a kind of or arbitrary proportion in tolylene diisocyanate, diphenylmethanediisocyanate.
Described oligomer polyol is that functionality is 2 ~ 3, a kind of or arbitrary proportion in the polytetrahydrofuran ethoxylated polyhydric alcohol of number-average molecular weight between 400 ~ 4000, polyoxyethylene ethoxylated polyhydric alcohol, polyoxytrimethylene ethoxylated polyhydric alcohol, polyoxyethylene-propylene oxide copolyether polyvalent alcohol, propylene oxide-tetrahydrofuran (THF) copolyether polyvalent alcohol, polycarbonate polyol, pla-pcl polyvalent alcohol, poly adipate succinic acid ester polyvalent alcohol, poly-adipate glycol butanediol ester polyvalent alcohol, poly-adipate glycol propylene glycol ester polyvalent alcohol two or more.
Described polyisocyanates is two kinds of a kind of or arbitrary proportion in carbodiimide modified diphenylmethane diisocyanate or poly methylene poly phenyl poly isocyanate.
The preparation method of the modification rubber and plastic rain grate of described modification rubber and plastic rain grate raw material is characterized in that:
The first step: with modification rubber and plastic rain grate raw material in a vacuum after deaeration, the glass microballon that adds modification rubber and plastic rain grate raw material 1%, the white carbon black of modification rubber and plastic rain grate raw material 3%, the Moca of modification rubber and plastic rain grate raw material 10% ~ 15%, stir, pour 80 ~ 100 ℃ and in the mould of brushing releasing agent into; Insulation 20 ~ 30min, Qi Mo namely gets goods;
Second step: more than goods are placed in 80 ~ 90 ° of baking ovens sulfuration 16h, slowly cool to room temperature; Natural vulcanization 3 ~ 7d under room temperature;
The usage ratio of described Moca is in solid Moca, and before adding, heating in advance makes it to become liquid state;
Described per-cent is mass percent.
Positively effect of the present invention is:
(1), shock resistance and supporting capacity obviously improve.After testing, prepared rain grate raw material have higher tensile strength (40～50Mpa), higher Young's modulus (70～80Mpa) and higher tear strength.A kind of not easy fracture, not cracky.Shock-resistant load (failure load): 154KN.
Yantai City's product quality supervision is checked rain grate of the present invention on December 30th, 2011 through check, and provided survey report on January 9th, 2012, report number: (2012) 2100018, its test basis is CJ/T121-2000, rain grate specifications and models are 400 Х 700 Х 35(mm), cushion block diameter 356mm, sample state are side's plate with holes, assay is: trial load 240KN keeps 5min seminess not occur.
Yantai City's product quality supervision is checked rain grate of the present invention on October 23rd, 2012 through check, and provided survey report on October 23rd, 2012, report number: (2012) 2101179, its test basis is CJ/T121-2005, rain grate specifications and models are 400 Х 600 mm, sample state is square, and assay is: failure load: 154KN.
(2), solar ultraviolet can't penetrate rain grate raw material of the present invention, rain grate ageing-resistant performance of the present invention is very good, and prepared material good weatherability, and is indeformable in-40 ℃～+ 70 ℃ scopes, greatly widened the scope of application.And have the characteristics such as oil resistant, weak acid and alkali resistance, anti-solvent.Apart from measuring and calculating, working life was over 30 years.
(3), to have cost low, noise is little, easily installs, easily the advantage such as unlatchings, be difficult for stolen owing to substantially recycling value simultaneously.
(4), the contraction ratio of well lid of the present invention under high temperature and low temperature environment be in 0.15% left and right, and be suitable with metal rain grate.
(5), permeability rate is high, water displacement is large.Guaranteeing under the prerequisite of use properties, rain grate percentage of open area of the present invention can reach 40%～60%, and cast iron water grate percentage of open area is 30% left and right, and the percentage of open area that cement and silicon are moulded the water grate is only 20% left and right.
Embodiment
Further illustrate the present invention below in conjunction with specific examples.
One, the synthesis technique of modification rubber and plastic rain grate raw material
the first step: by weight percentage, reacted 2 ~ 3 hours at 70 ~ 80 ℃ by vulcabond 24.1 ~ 71.4% and oligomer polyol 28.6 ~ 75.9%, obtain the isocyano mass content and be 10 ~ 15% performed polymer, described vulcabond is tolylene diisocyanate, one or both in diphenylmethanediisocyanate, it is 2 ~ 3 that described oligomer polyol adopts functionality, the polytetrahydrofuran ethoxylated polyhydric alcohol of number-average molecular weight in 400 ~ 4000 scopes, the polyoxyethylene ethoxylated polyhydric alcohol, the polyoxytrimethylene ethoxylated polyhydric alcohol, polyoxyethylene-propylene oxide copolyether polyvalent alcohol, propylene oxide-tetrahydrofuran (THF) copolyether polyvalent alcohol, polycarbonate polyol, the pla-pcl polyvalent alcohol, the poly adipate succinic acid ester polyvalent alcohol, poly-adipate glycol butanediol ester polyvalent alcohol, one or more in poly-adipate glycol propylene glycol ester polyvalent alcohol.
Second step: by weight percentage, be that 10 ~ 15% performed polymer 17.1 ~ 74.7% mixed 0.5 ~ 1 hour at 60 ~ 70 ℃ with polyisocyanates 25.3 ~ 82.9% with the first step gained isocyano mass content, make isocyano-content and be 20 ~ 25% mixture, described polyisocyanates is one or both in carbodiimide modified diphenylmethane diisocyanate or poly methylene poly phenyl poly isocyanate.
Two, product process
1, mould and die preheating (80 ~ 100 ℃).
2, brushing releasing agent (requiring evenly).
3, after the mixture deaeration in a vacuum (60 ~ 75 ℃) with isocyano-content 20 ~ 25%, take 4 ~ 7kg(and look the goods specification).
4, add 1% glass microballon and 3% white carbon black.
5, take 520 ~ 910gMoca solution, jointly stir with above-mentioned mixing liquid, pour in the mould of 80 ~ 100 ℃.That described Moca is solid Moca, is heated in advance 105 ~ 110 ℃ before adding and makes it to become liquid state.
6, insulation (80 ~ 100 ℃) 20 ~ 30min, Qi Mo namely gets goods.
7, goods are placed in 80 ~ 90 ° of baking ovens sulfuration 16h more than, slowly cool to room temperature.
8, resulting product is placed in room temperature, makes its natural vulcanization 3 ~ 7d.
The glass microballon that the embodiment of the present invention adopts is to be formed by the borosilicate Raw material processing, and granularity is 10-250 microns, wall thickness 1-2 micron.This product has light weight, low heat conduction, higher intensity, the good advantages such as chemical stability, and its surface has the oleophyllie hydrophobic performance through special processing, is very easy to be scattered in the organic materials system.Its Chemical Composition: SiO2〉67%, CaO〉8.0% MgO 2.5% Na2O＜14%, Al2O3 0.5-2.0 Fe2O3〉0.15 other 2.0%.Its proportion: 2.4-2.6 g/cc, tap density: 1.5 g/ccs, Mohs' hardness: 6-7 Mohs, Rockwell hardness: 48-52 HRC.Outward appearance: bright and clean, rounding, glass transparent inclusion-free become the circle rate higher than 85%.Magnetic particle is no more than 0.1% of product weight.In granulated glass sphere pearl body, air bubble content is lower than 10%.
MOCA of the present invention (not card) belongs to the Diamines chainextender, name of product: 3,3'-two chloro-4,4'-diaminodiphenyl-methane or two adjacent chlorodiphenyl amine methane
,Molecular formula: C13H12N2Cl2.
Claims (4)
1. the preparation method of a modification rubber and plastic rain grate is characterized in that:
The first step: with modification rubber and plastic rain grate raw material in a vacuum after deaeration, the glass microballon that adds modification rubber and plastic rain grate raw material 1%, the white carbon black of modification rubber and plastic rain grate raw material 3%, the Moca of modification rubber and plastic rain grate raw material 10% ~ 15%, stir, pour 80 ~ 100 ℃ and in the mould of brushing releasing agent into; Insulation 20 ~ 30min, Qi Mo namely gets goods;
Second step: more than goods are placed in 80 ~ 90 ℃ of baking ovens sulfuration 16h, slowly cool to room temperature; Natural vulcanization 3 ~ 7d under room temperature;
The usage ratio of described Moca is in solid Moca, and before adding, heating in advance makes it to become liquid state;
The preparation method of described modification rubber and plastic rain grate raw material:
The first step, preparation performed polymer: the vulcabond by 24.1 ~ 71.4% and 28.6 ~ 75.9% oligomer polyol were reacted under 70 ~ 80 ℃ 2 ~ 3 hours, obtained performed polymer;
Second step, preparation modification rubber and plastic rain grate raw material: the performed polymer of the first step gained with 17.1 ~ 74.7% and 25.3 ~ 82.9% polyisocyanates descended to react 0.5 ~ 1 hour at 60 ~ 70 ℃, made modification rubber and plastic rain grate raw material;
Described per-cent is mass percent.
2. the preparation method of modification rubber and plastic rain grate as claimed in claim 1 is characterized in that: described vulcabond is two kinds of a kind of or arbitrary proportion in tolylene diisocyanate, diphenylmethanediisocyanate.
3. the preparation method of modification rubber and plastic rain grate as claimed in claim 1, it is characterized in that: described oligomer polyol is that functionality is 2 ~ 3, the polytetrahydrofuran ethoxylated polyhydric alcohol of number-average molecular weight between 400 ~ 4000, the polyoxyethylene ethoxylated polyhydric alcohol, the polyoxytrimethylene ethoxylated polyhydric alcohol, polyoxyethylene-propylene oxide copolyether polyvalent alcohol, propylene oxide-tetrahydrofuran (THF) copolyether polyvalent alcohol, polycarbonate polyol, the pla-pcl polyvalent alcohol, the poly adipate succinic acid ester polyvalent alcohol, poly-adipate glycol butanediol ester polyvalent alcohol, a kind of or arbitrary proportion in poly-adipate glycol propylene glycol ester polyvalent alcohol two or more.
4. the preparation method of modification rubber and plastic rain grate as claimed in claim 1 is characterized in that: described polyisocyanates is two kinds of a kind of or arbitrary proportion in carbodiimide modified diphenylmethane diisocyanate or poly methylene poly phenyl poly isocyanate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210428473.2A CN102875776B (en) | 2012-11-01 | 2012-11-01 | Raw material and preparation method of modified rubber-plastic rain grate |
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| CN201210428473.2A CN102875776B (en) | 2012-11-01 | 2012-11-01 | Raw material and preparation method of modified rubber-plastic rain grate |
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| CN102875776A CN102875776A (en) | 2013-01-16 |
| CN102875776B true CN102875776B (en) | 2013-11-06 |
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| WO2000023493A1 (en) * | 1998-10-15 | 2000-04-27 | Buechel Thomas | Moulded bodies made from a polyurethane material, production and use thereof |
| CN1831067A (en) * | 2005-11-15 | 2006-09-13 | 上海瑞鹏化工材料科技有限公司 | Flame-retardant type polyurea anti-corrosion coating for chemical industry steel structure and its prepn. process |
| EP2220034B1 (en) * | 2007-11-13 | 2015-12-23 | Sika Technology AG | Aromatic aldimines and polyurethane compositions which contain aldimine |
| CN102432253A (en) * | 2011-09-22 | 2012-05-02 | 葛达旺 | Preparation methods of high-strength glass-fiber reinforced cement (GRC) composite material and high-strength XJ composite material, high-strength GRC composite material well-cover, and high-strength GRC-supported XJ composite material well-cover |
| CN102504182B (en) * | 2011-10-27 | 2014-06-04 | 山东一诺威聚氨酯股份有限公司 | Preparation method of rigid polyurethane |
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