CN101575443A - Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof - Google Patents
Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof Download PDFInfo
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- CN101575443A CN101575443A CNA2009101195792A CN200910119579A CN101575443A CN 101575443 A CN101575443 A CN 101575443A CN A2009101195792 A CNA2009101195792 A CN A2009101195792A CN 200910119579 A CN200910119579 A CN 200910119579A CN 101575443 A CN101575443 A CN 101575443A
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Abstract
The invention discloses a non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof. The non-ignitable SMC polyester moulding compound is prepared by the following materials: 50 to 70 parts by weight of unsaturated polyester resin, 30 to 50 parts by weight of low profile additive, 5 to 8 parts by weight of viscosity depressant, 4 to 6 parts by weight of impregnating compound, 8 to 10 parts by weight of liquid pigment, 0.5 to 1.5 parts by weight of curing agent, 0.1 to 0.3 parts by weight of inhibitive substance, 4 to 6 parts by weight of diluting agent, 385 to 420 parts by weight of filler material, 1 to 3 parts by weight of idling thickening agent and 90 to 120 parts by weight of chopped glass fiber. The invention adds a great amount of aluminium hydroxide treated by graduation and adds viscosity depressant and processing adding agent in definite proportion to control system viscosity, liquidity and release property, and then thickening agent is added according to certain proportion to control initiative thickening rate of material, so that the material not only keeps favorable liquidity and surface quality but also meets non-ignitable requirement; and the inflaming retarding level thereof is UL94V-0t=1mm.
Description
Technical field
The present invention relates to the composite science technical field, particularly relate to a kind of SMC polyester molding compound and preparation method thereof.
Background technology
Development along with China's economy and urban construction, the acute speed of urban population and city quantity increases, Urban traffic more and more is subjected to people and pays close attention to, and building large vol rail rapid transit system, forming comprehensive three-dimensional urban public transport network is the effective way that solves the city traffic congested problem.The correct track traffic facility material of selecting in urban rail transit construction, reduce the blindness that material uses, the enforcement of guaranteeing railway traffic engineering advance, high quality, low-cost target is very important, and matrix material is undoubtedly one of critical material of Construction of Urban Rail Traffic.Matrix material will exceed 1～5 times than specific tenacity, the specific modulus of general steel, macromolecular material; With the member that matrix material is made, in light weight, intensity is high, rigidity is big, is a kind of ideal structural part; Composite products manufacturing process majority is nearly end form moulding, and the product that produces need not carry out mechanical workout, production efficiency height, low cost of manufacture; Matrix material is widely used in track traffic, to alleviating carriage weight, reduces noise, vibration, improves difficulty security, comfortableness, reduces maintenance ... wait all to play an important role.
Sheet molding compound (Sheet Molding Compound, SMC) be by resin paste impregnation of fibers or chopped mat, both sides cover polyethylene film and the class sheet molding compound made, belong to prepreg mat material scope, are one of most widely used forming composites in the world at present.SMC develops swift and violent novel moulded material as a kind of, has many characteristics: 1. favorable reproducibility is not subjected to the influence of operator and ambient conditions; 2. manipulation is convenient; 3. clean operation environment, health have been improved labor condition; 4. good fluidity, plastic special-shaped products; 5. mould pressing process is less demanding to temperature and pressure, and variable range is big, can reduce the equipment and mold expense significantly; 6. staple length 40～50mm, quality uniformity is good, is suitable for the pressed section and changes little large thin-wall goods; 7. resulting product surface smoothness height, adopt low shrinkage additive after, surface quality is even more ideal; 8. production efficiency height, shaping cycle is short, is easy to realize the full automatic mechanical operation, and production cost is relatively low.
But present SMC technology also has a lot of technical problems to be solved for the widespread use of urban rail transit construction, especially fire-retardant rank is had relatively high expectations particularly can reach and does not fire other SMC system of level, also exists technical bottleneck.Along with improving constantly of environmental requirement, after flame-retardant system developed into the Halogen system by the Halogen system, the use of aluminium hydroxide became inevitable.Its fire-retardant principle is as follows:
2A1(OH)
3→Al
2O
3+3H
2O
Promptly replace the generation of organic substrate-absorption heat-formation steam-dilution oxygen-absorption flue dust-attenuating cigarette.
But if guarantee the high flame retardant grade, a large amount of aluminium hydroxide certainly will will be added, it is little that the content adversary of aluminium hydroxide sticks with paste technogenic influence, but it is fatal really for SMC technology, because in the making processes of SMC, the viscosity of system has directly had influence on the infiltration to glass fibre, and aluminium hydroxide can cause products surface quality to reduce simultaneously, the mobile variation of SMC.
Summary of the invention
The technical problem to be solved in the present invention provides and a kind ofly is applied to reaching of urban rail transit construction and does not fire rank and have SMC polyester molding compound of excellent properties and preparation method thereof.
Technical scheme of the present invention is as follows:
A kind of non-ignitable SMC polyester moulding compound for rail transit is made up of the raw material of following parts by weight: 50～70 parts of unsaturated polyester resins, 30～50 parts of low shrinkage additives, 5～8 parts of viscosity-depression agents, 4～6 parts for the treatment of compounds, 8～10 parts of liquid paints, 0.5～1.5 part in solidifying agent, 0.1～0.3 part of stopper, 4～6 parts of thinners, 385～420 parts of packing materials, 1～3 part of thickening material, 90～120 parts of short glass fibers at a slow speed.
Wherein: described unsaturated polyester resin is adjacent benzene type unsaturated polyester resin, and preferably wherein unsaturated polyester accounts for 65%～70% weight part, and all the other are styrene solution;
Described low shrinkage additive is to be that 55%～65% monomer styrene solution mixes to dissolve and gets with commercial polysterol and concentration, and preferably wherein polystyrene accounts for 35%～45% weight part, and monomer styrene solution accounts for 55%～65% weight part;
Described viscosity-depression agent is the BYK-W-996 type treating compound that the German BYK company that selects for use produces;
Described treating compound is the BYK-W-9060 type treating compound that the German BYK company that selects for use produces;
Described liquid paint is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10, and preferred wherein toner accounts for 10% weight part, monomer-free unsaturated polyester resin S10 and accounts for 90% weight part;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate;
Described stopper is the mixture of Resorcinol and para benzoquinone, and preferably the two was according to 1: 3 mixed;
Described thinner is a monomer styrene solution;
Described packing material is the hydrated aluminum oxide powder of grating, and preferably the particle diameter through grating is 200 orders～800 purpose hydrated aluminum oxide powder;
Described thickening material at a slow speed is a magnesium hydroxide solution, and preferred concentration is 35% magnesium hydroxide solution.
A kind of method for preparing non-ignitable SMC polyester moulding compound for rail transit, its step is as follows:
(1) stirred 1 minute with unsaturated polyester resin, low shrinkage additive, viscosity-depression agent, treating compound, liquid paint, solidifying agent, stopper, thinner thorough mixing and under 800 rev/mins rotating speed, make mixed uniformly compound;
(2) rotating speed is increased to 1500 rev/mins, and adds the hydrated aluminum oxide of grating one by one, stirred 5 minutes;
(3) speed drop is low to moderate 300 rev/mins, adds thickening material, stirred 40 seconds, can go up mechanism after stirring is finished and do;
(4) on production line, stick with paste thickness, 9 meters/minute impregnating speed, 70 rev/mins glass fibre cutting speed in feet per minute and carry out continuous production with scraping of 1.5mm.
Non-ignitable SMC polyester moulding compound of the present invention is the application surface treatment technology and utilizes thickness grating principle, reaches and do not fire rank by adding aluminium hydroxide that a large amount of gratings cross.But adding a certain proportion of viscosity-depression agent and process auxiliaries simultaneously controls system viscosity, flowability, release property; And add a certain proportion of thickening material of thickening type at a slow speed, with the initial thickening rate of control SMC material; Control by the high shear rates of special reinforced mixing equipment simultaneously, solve high aluminium hydroxide and fill the material thixotropy of bringing, make the SMC material both keep good flowability and surface quality, reach non-combustible requirement again, its fire-retardant rank is UL94V-0t=1mm.
The preparation method of non-ignitable SMC polyester moulding compound of the present invention adopts 1500 rev/mins high speed dispersion that each component in the compound is evenly distributed under high shear rate, and powder and liquid have good infiltration and bonding force.
According to embodiment the present invention is described in further detail below.
Embodiment
Embodiment 1:
By weight ratio, the hydrated aluminum oxide, 1 part of choosing 50 parts of unsaturated polyester resins, 50 parts of low shrinkage additives, 6 portions of viscosity-depression agents, 5 parts for the treatment of compounds, 10 parts of liquid paints, 1.2 parts of solidifying agent, 0.2 part of stopper, 5 parts of thinners, 400 parts of gratings thickening material, 120 parts of alkali-free short glass fibers at a slow speed.
Wherein: described unsaturated polyester resin is adjacent benzene type unsaturated polyester resin, wherein unsaturated polyester accounts for 65%～70% weight part, all the other are styrene solution, its viscosity is 1800cps, characteristics are: 1. be the good wetting property of hydrated aluminum oxide with strongthener and filler, 2. initial low viscosity and stablize thickening characteristic at a slow speed, 3. the good mechanical characteristic comprises toughness and resistent fatigue characteristic etc.;
Described low shrinkage additive is to be that 55%～65% monomer styrene solution mixes to dissolve and gets with commercial polysterol and concentration, wherein polystyrene accounts for 35% weight part, monomer styrene solution accounts for 65% weight part, be characterized in: 1. superior contraction control, 2. superior tint permanence, 3. oilness is good;
Described viscosity-depression agent is the BYK-W-996 type treating compound that the German BYK company that selects for use produces;
Described treating compound is the BYK-W-9060 type treating compound that the German BYK company that selects for use produces, and be characterized in: 1. the stable mode plastics improve liquidity, and 2. improve release property;
Described liquid paint is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10, and wherein toner accounts for 10% weight part, monomer-free unsaturated polyester resin S10 and accounts for 90% weight part;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate;
The described stopper mixture that to be Resorcinol and para benzoquinone form according to 1: 3 mixed is characterized in: 1. prolong the storage period of moulding compound, improve stability, 2. control curing characteristic, reduce generation of defects;
Described thinner is a monomer styrene solution;
Described packing material is that the particle diameter of process grating is 500 purpose hydrated aluminum oxide powder;
Described thickening material at a slow speed is that concentration is 35% magnesium hydroxide solution;
The length of described alkali-free short glass fiber is 6mm.
Following steps for manufacturing:
(1) stirred 1 minute with unsaturated polyester resin, low shrinkage additive, viscosity-depression agent, treating compound, liquid paint, solidifying agent, stopper, thinner thorough mixing and under 800 rev/mins rotating speed, make mixed uniformly compound;
(2) rotating speed is increased to 1500 rev/mins, and the particle diameter that adds one by one through grating is 500 purpose hydrated aluminum oxide powder, stirred 5 minutes;
(3) speed drop is low to moderate 300 rev/mins, adding concentration is 35% magnesium hydroxide solution, stirs 40 seconds, can go up mechanism after stirring is finished and do;
(4) on production line, stick with paste thickness, 9 meters/minute impregnating speed, 70 rev/mins glass fibre cutting speed in feet per minute and carry out continuous production with scraping of 1.5mm.
Embodiment 2:
By weight ratio, the hydrated aluminum oxide, 2 parts of choosing 70 parts of unsaturated polyester resins, 30 parts of low shrinkage additives, 8 portions of viscosity-depression agents, 6 parts for the treatment of compounds, 9 parts of liquid paints, 1.5 parts of solidifying agent, 0.3 part of stopper, 6 parts of thinners, 420 parts of gratings thickening material, 90 parts of alkali-free short glass fibers at a slow speed.
Wherein: described unsaturated polyester resin is adjacent benzene type unsaturated polyester resin, and wherein unsaturated polyester accounts for 65%～70% weight part, and all the other are styrene solution, and its viscosity is 1800cps;
Described low shrinkage additive is to be that 55%～65% monomer styrene solution mixes to dissolve and gets with commercial polysterol and concentration, and wherein polystyrene accounts for 45% weight part, and monomer styrene solution accounts for 55% weight part;
Described viscosity-depression agent is the BYK-W-996 type treating compound that the German BYK company that selects for use produces;
Described treating compound is the BYK-W-9060 type treating compound that the German BYK company that selects for use produces;
Described liquid paint is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10, and wherein toner accounts for 10% weight part, monomer-free unsaturated polyester resin S10 and accounts for 90% weight part;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate;
The described stopper mixture that to be Resorcinol and para benzoquinone form according to 1: 3 mixed;
Described thinner is a monomer styrene solution;
Described packing material is that the particle diameter of process grating is 200 purpose hydrated aluminum oxide powder;
Described thickening material at a slow speed is that concentration is 35% magnesium hydroxide solution;
The length of described alkali-free short glass fiber is 12mm.
Following steps for manufacturing:
(1) stirred 1 minute with unsaturated polyester resin, low shrinkage additive, viscosity-depression agent, treating compound, liquid paint, solidifying agent, stopper, thinner thorough mixing and under 800 rev/mins rotating speed, make mixed uniformly compound;
(2) rotating speed is increased to 1500 rev/mins, and the particle diameter that adds one by one through grating is 200 purpose hydrated aluminum oxide powder, stirred 5 minutes;
(3) speed drop is low to moderate 300 rev/mins, adding concentration is 35% magnesium hydroxide solution, stirs 40 seconds, can go up mechanism after stirring is finished and do;
(4) on production line, stick with paste thickness, 9 meters/minute impregnating speed, 70 rev/mins glass fibre cutting speed in feet per minute and carry out continuous production with scraping of 1.5mm.
Embodiment 3:
By weight ratio, choose 60 parts of unsaturated polyester resins, 40 parts of low shrinkage additives, 5 portions of viscosity-depression agents, 4 parts for the treatment of compounds, 8 parts of liquid paints, 1 part of solidifying agent, 0.1 part of stopper, 4 parts of thinners, the hydrated aluminum oxide of 380 parts of gratings, 3 parts of thickening materials, 100 parts of alkali-free short glass fibers.
Wherein: described unsaturated polyester resin is adjacent benzene type unsaturated polyester resin, and wherein unsaturated polyester accounts for 65%～70% weight part, and all the other are styrene solution, and its viscosity is 1800cps;
Described low shrinkage additive is to be that 55%～65% monomer styrene solution mixes to dissolve and gets with commercial polysterol and concentration, and wherein polystyrene accounts for 40% weight part, and monomer styrene solution accounts for 60% weight part;
Described viscosity-depression agent is the BYK-W-996 type treating compound that the German BYK company that selects for use produces;
Described treating compound is the BYK-W-9060 type treating compound that the German BYK company that selects for use produces;
Described liquid paint is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10, and wherein toner accounts for 10% weight part, monomer-free unsaturated polyester resin S10 and accounts for 90% weight part;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate;
The described stopper mixture that to be Resorcinol and para benzoquinone form according to 1: 3 mixed;
Described thinner is a monomer styrene solution;
Described packing material is that the particle diameter of process grating is 800 purpose hydrated aluminum oxide powder;
Described thickening material at a slow speed is that concentration is 35% magnesium hydroxide solution;
The length of described alkali-free short glass fiber is 12mm.
Following steps for manufacturing:
(1) stirred 1 minute with unsaturated polyester resin, low shrinkage additive, viscosity-depression agent, treating compound, liquid paint, solidifying agent, stopper, thinner thorough mixing and under 800 rev/mins rotating speed, make mixed uniformly compound;
(2) rotating speed is increased to 1500 rev/mins, and the particle diameter that adds one by one through grating is 800 purpose hydrated aluminum oxide powder, stirred 5 minutes;
(3) speed drop is low to moderate 300 rev/mins, adding concentration is 35% magnesium hydroxide solution, stirs 40 seconds, can go up mechanism after stirring is finished and do;
(4) on production line, stick with paste thickness, 9 meters/minute impregnating speed, 70 rev/mins glass fibre cutting speed in feet per minute and carry out continuous production with scraping of 1.5mm.
Be the key technical indexes of non-ignitable SMC polyester moulding compound of the present invention below:
| Test event | Unit | Test method(s) | Technical indicator |
| Molding proportion | g/cm3 | ISO 1183-2004(E) | 2-2.05 |
| Shaping shrinkage rate | ％ | ISO 2577-1984(E) | ＜0.1 |
| Water-intake rate | mg | ISO 62-1999(E) | ＜0.2 |
| Heat-drawn wire | ℃ | ISO 75-1987(E) | ＞200 |
| Flexural strength | MPa | ISO 178-2001(E) | ＞165 |
| Crooked elastic rate | GPa | ISO 178-2001(E) | ＞10 |
| Shock strength (but shellfish) | KJ/m2 | ISO 179-2000(E) | ＞60 |
| Insulation opposing (normality) | Ω | GB10064 | ＞1013 |
| Insulation opposing (boiling) | Ω | GB10064 | ＞1011 |
| Proof voltage | KV/mm | IEC60243-1：1998 | 12-14 |
| Arc resistance | Sec | GB/T1411-2002 | ＞183 |
| Anti-electric leakage | CTI | GB/T4207-2003 | ＞600 |
| Flame resistivity | UL-94 | V-0t＝1.0mm | |
| Oxygen index | UL-94 | ＞70 |
Claims (9)
1, non-ignitable SMC polyester moulding compound for rail transit is characterized in that, described non-ignitable SMC polyester moulding compound is made up of the raw material of following parts by weight:
50～70 parts of unsaturated polyester resins;
30～50 parts of low shrinkage additives;
5～8 parts of viscosity-depression agents;
4～6 parts for the treatment of compounds;
8～10 parts of liquid paints;
0.5～1.5 part in solidifying agent;
0.1～0.3 part of stopper;
4～6 parts of thinners;
385～420 parts of packing materials;
Thickening material is 1～3 part at a slow speed;
90～130 parts of short glass fibers;
Wherein: described unsaturated polyester resin is adjacent benzene type unsaturated polyester resin;
Described low shrinkage additive is to be that 55%～65% monomer styrene solution mixes to dissolve and gets with commercial polysterol and concentration;
Described viscosity-depression agent is the BYK-W-996 type treating compound that the German BYK company that selects for use produces;
Described treating compound is the BYK-W-9060 type treating compound that the German BYK company that selects for use produces;
Described liquid paint is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate;
Described stopper is the mixture of Resorcinol and para benzoquinone;
Described thinner is a monomer styrene solution;
Described packing material is the hydrated aluminum oxide powder of grating;
Described thickening material at a slow speed is a magnesium hydroxide solution.
2, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, unsaturated polyester accounts for 65%～70% weight part in the described unsaturated polyester resin, and all the other are styrene solution.
3, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, polystyrene accounts for 35%～45% weight part in the described low shrinkage additive, and monomer styrene solution accounts for 55%～65% weight part.
4, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, versicolor toner accounts for 10% weight part in the described liquid paint, monomer-free unsaturated polyester resin S10 accounts for 90% weight part.
5, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, described stopper is the mixture that is formed according to 1: 3 mixed by Resorcinol and para benzoquinone.
6, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, the hydrated aluminum oxide of described grating is that a kind of particle diameter through grating is 200 orders～800 purpose hydrated aluminum oxide powder.
7, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, described thickening material at a slow speed is that concentration is 35% magnesium hydroxide solution.
8, non-ignitable SMC polyester moulding compound for rail transit according to claim 1 is characterized in that, described short glass fiber is the alkali-free short glass fiber, and its length is 6mm or 12mm.
9, a kind of method for preparing the described non-ignitable SMC polyester moulding compound for rail transit of claim 1 is characterized in that may further comprise the steps:
(1) stirred 1 minute with unsaturated polyester resin, low shrinkage additive, viscosity-depression agent, treating compound, liquid paint, solidifying agent, stopper, thinner thorough mixing and under 800 rev/mins rotating speed, make mixed uniformly compound;
(2) rotating speed is increased to 1500 rev/mins, and adds the hydrated aluminum oxide of grating one by one, stirred 5 minutes;
(3) speed drop is low to moderate 300 rev/mins, adds thickening material, stirred 40 seconds, can go up mechanism after stirring is finished and do;
(4) on production line, stick with paste thickness, 9 meters/minute impregnating speed, 70 rev/mins glass fibre cutting speed in feet per minute and carry out continuous production with scraping of 1.5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101195792A CN101575443A (en) | 2009-03-17 | 2009-03-17 | Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101195792A CN101575443A (en) | 2009-03-17 | 2009-03-17 | Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof |
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| CN101845119A (en) * | 2010-05-25 | 2010-09-29 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
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| CN102729548A (en) * | 2012-07-18 | 2012-10-17 | 浙江天顺玻璃钢有限公司 | Preparation method for SMC (sheet moulding compound) composite material |
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| CN103232747A (en) * | 2013-04-26 | 2013-08-07 | 河北省烟草公司唐山市公司 | Terrace surface repairing agent |
| CN103613915A (en) * | 2013-07-02 | 2014-03-05 | 大连当代兴达发展有限公司 | Bulk molding compound with high stability and preparation method therefor |
| CN104072679A (en) * | 2014-06-25 | 2014-10-01 | 四川东材科技集团股份有限公司 | High-storage-stability unsaturated polyester molding compound composition and preparation method thereof |
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| CN106167609A (en) * | 2016-08-05 | 2016-11-30 | 振石集团华美新材料有限公司 | A kind of high flow flame-proof sheet molding compound and preparation method thereof |
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| CN101845119B (en) * | 2010-05-25 | 2011-10-19 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
| CN101845119A (en) * | 2010-05-25 | 2010-09-29 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
| CN101899203A (en) * | 2010-08-02 | 2010-12-01 | 振石集团华美复合新材料有限公司 | Grid treadle bar and manufacturing method thereof |
| CN101899203B (en) * | 2010-08-02 | 2012-05-09 | 振石集团华美复合新材料有限公司 | Grid treadle bar and manufacturing method thereof |
| CN102797157B (en) * | 2012-02-03 | 2014-09-03 | 金柏青 | Carbon fiber impregnating liquid, preparation method thereof and process for producing prepreg |
| CN102797157A (en) * | 2012-02-03 | 2012-11-28 | 金柏青 | Carbon fiber impregnating liquid, preparation method thereof and process for producing prepreg |
| CN102729548A (en) * | 2012-07-18 | 2012-10-17 | 浙江天顺玻璃钢有限公司 | Preparation method for SMC (sheet moulding compound) composite material |
| CN102729548B (en) * | 2012-07-18 | 2015-01-28 | 浙江天顺玻璃钢有限公司 | Preparation method for SMC (sheet moulding compound) composite material |
| CN103232747A (en) * | 2013-04-26 | 2013-08-07 | 河北省烟草公司唐山市公司 | Terrace surface repairing agent |
| CN103613915A (en) * | 2013-07-02 | 2014-03-05 | 大连当代兴达发展有限公司 | Bulk molding compound with high stability and preparation method therefor |
| CN104072679A (en) * | 2014-06-25 | 2014-10-01 | 四川东材科技集团股份有限公司 | High-storage-stability unsaturated polyester molding compound composition and preparation method thereof |
| CN104072679B (en) * | 2014-06-25 | 2018-04-24 | 四川东材科技集团股份有限公司 | Shelf-stable unsaturated polyester die plastic composition and preparation method thereof |
| CN104861689A (en) * | 2015-06-10 | 2015-08-26 | 无锡澳明威环保新材料有限公司 | Production method and formula of high-strength and high-toughness laminar film plastic |
| CN106167609A (en) * | 2016-08-05 | 2016-11-30 | 振石集团华美新材料有限公司 | A kind of high flow flame-proof sheet molding compound and preparation method thereof |
| CN108219413A (en) * | 2017-12-20 | 2018-06-29 | 安徽鑫普瑞复合材料有限公司 | A kind of fire-retardant SMC moulding compounds of high oxygen index (OI) and its manufacturing method |
| CN109401260A (en) * | 2018-09-30 | 2019-03-01 | 濮阳市盛源石油化工（集团）有限公司 | A kind of corrosion-resistant halogen-free flameproof unsaturated polyester resin and preparation method thereof |
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