CN102604351A - Platy mold plastic for door sheet and preparing method of platy mold plastic - Google Patents
Platy mold plastic for door sheet and preparing method of platy mold plastic Download PDFInfo
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- CN102604351A CN102604351A CN2012100547122A CN201210054712A CN102604351A CN 102604351 A CN102604351 A CN 102604351A CN 2012100547122 A CN2012100547122 A CN 2012100547122A CN 201210054712 A CN201210054712 A CN 201210054712A CN 102604351 A CN102604351 A CN 102604351A
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Abstract
The invention discloses a platy mold plastic for a door sheet and a preparing method of the platy mold plastic. The molding shrinkage factor of the platy mold plastic for the door sheet is less than or equal to 0.01%; and the platy mold plastic is prepared from the following materials in parts by weight: 45-55 parts of unsaturated polyester resin, 45-55 parts of low shrink agent, 3-4 parts of internal releasing agent, 2-3 parts of thickening agent, 1.2-1.5 part of wetting dispersant, 65-100 parts of glass fiber and 180-200 parts of fillers, wherein isophthalic unsaturated polyester resin is used as the unsaturated polyester resin; and saturated polyester thermoplastic resin or polyvinyl acetate is used as the low shrink agent. The platy mold plastic prepared by the preparation method disclosed by the invention has extremely low molding shrinkage factor and excellent flowability and filling performance; the door sheet pressed by the platy mold plastic has high surface flatness; and the yield of a door sheet product is improved.
Description
Technical field
The present invention relates to a kind of matrix material and preparation method thereof, especially relate to a kind of door-plate with sheet molding compound and preparation method thereof.
Background technology
Sheet molding compound (English name is Sheet molding compound, is called for short SMC) is that starting material are used in a kind of mold pressing of being processed by unsaturated polyester resin, shrinking agent, spun glass, filler and various auxiliary agent.It has superior electric property and corrosion resistance nature, particularly mechanical property and can compare favourably with the part metals material, thereby is widely used in road vehicle, building, industry such as electric.
More and more faster along with sheet molding compound development; Also increasingly high to its performance requriements; The molding shrinkage of sheet molding compound in the market is usually 0.1%～1%, and it is mobile and fillibility is relatively poor, as if the words that this sheet molding compound are pressed into door-plate; Can influence the surface finish of door-plate, reduce the qualification rate of door-plate product.
Summary of the invention
One of the object of the invention is to address the above problem, and provides a kind of door-plate with excellent flowability and fillibility and molding shrinkage≤0.01% to use sheet molding compound.
Another object of the present invention is to provide the preparation method of above-mentioned door-plate with sheet molding compound.
The technical scheme that realizes one of the object of the invention is: a kind of door-plate is used sheet molding compound, its molding shrinkage≤0.01%.It is to be processed by the raw material of following weight parts: 45 parts～55 parts of unsaturated polyester resins, 45 parts～55 parts of shrinking agents, 3 parts～4 parts of inner pattern releasing agent applicables; 2 parts～3 parts of thickening materials; 1.2 parts～1.5 parts of wetting dispersing agents, 65 parts～100 parts in spun glass, 180 parts～200 parts of fillers.
Described unsaturated polyester resin is a metaphenylene unsaturated polyester resin, and its viscosity is 0.6Pas～0.8Pas, and acid number is 14mgKOH/g～20mgKOH/g, and amount of solid is 63%～67%, and gelation time is 8min～14min.
Described shrinking agent is saturated polyester thermoplastic resin or PVA.
Described inner pattern releasing agent applicable is Zinic stearas or calcium stearate; Described thickening material is that concentration is the magnesia magma of 30wt%～60wt%; Described wetting dispersing agent is a BYK-W9010 type wetting dispersing agent; Described spun glass is the short glass fiber of 25.4mm for the length that after too short cutting, obtains; Described filler is a lime carbonate.
The technical scheme that realizes another purpose of the present invention is: a kind of door-plate has following steps with the preparation method of sheet molding compound: it is for use 1. to take by weighing unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler according to prescription; 2. the unsaturated polyester resin that 1. step is taken by weighing, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in the mixing vessel, under the rotating speed of 1000rpm～1500rpm, carry out high speed dispersion 5min～10min, mix and obtain resin paste; And control resin paste viscosity be 5Pas～25Pas, moisture content≤0.15%; 3. the resin paste that 2. step is obtained is poured in the resin paste storage tank of SMC sheet forming unit, and online adding thickening material adds the molded SMC sheet material that obtains of leached glass fiber then in SMC sheet forming unit; 4. with step 3. the SMC sheet material multiviscosisty 10h～12h under 40 ℃～45 ℃ temperature after the moulding obtain door-plate and use sheet molding compound.
Content of glass fiber in the above-mentioned steps moulding process 3. in the hierarchy of control is 8%～27%, and the viscosity of the hierarchy of control is 200Pas～500Pas.
The positively effect that the present invention has: (1) the present invention finally can make the sheet molding compound of molding shrinkage≤0.01% through the control (about 1: 1) to unsaturated polyester resin and shrinking agent material chosen and weight ratio.(2) the present invention through the consumption and the moisture content of controlled oxidation magnesium, controls multiviscosisty degree and final viscosity in the process of preparation sheet molding compound, makes the sheet molding compound that finally makes have excellent flowability and fillibility.(3),, improved the qualification rate of door-plate product with its door-plate surface finish that is pressed into height because the sheet molding compound that the present invention makes has extremely low molding shrinkage and excellent flowability and fillibility.
Embodiment
(embodiment 1)
The door-plate of present embodiment is processed by the raw material of following weight parts with sheet molding compound:
50 parts of unsaturated polyester resins, 50 parts of shrinking agents, 4 parts of inner pattern releasing agent applicables, 2.6 parts of thickening materials, 1.3 parts of wetting dispersing agents, 70 parts in spun glass, 200 parts of fillers.
Wherein unsaturated polyester resin is a metaphenylene unsaturated polyester resin, and its viscosity is 0.7Pas, and acid number is 17mgKOH/g, and amount of solid is 65%, and gelation time is 10min.
Shrinking agent is that the trade mark that the auspicious Sheng matrix material of Changzhou heavenly steed ltd produces is the saturated polyester thermoplastic resin of LAP-1.
Inner pattern releasing agent applicable is a Zinic stearas.
Thickening material is that concentration is the magnesia magma of 50wt%.
Wetting dispersing agent is the BYK-W9010 type wetting dispersing agent that German Bi Ke (BYK) company produces.
Spun glass is the short glass fiber of 25.4mm for the length that after too short cutting, obtains.
Filler is a lime carbonate.
This door-plate has following steps with the preparation method of sheet molding compound:
1. it is for use to take by weighing unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler according to prescription.
2. the unsaturated polyester resin that 1. step is taken by weighing, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in the mixing vessel; Under the rotating speed of 1200rpm, carry out high speed dispersion 8min; Mix and obtain resin paste; And control resin paste viscosity be 10Pas～20Pas, moisture content≤0.15%.
3. the resin paste that 2. step is obtained is poured in the resin paste storage tank of SMC sheet forming unit, and online adding thickening material and look are stuck with paste, and in SMC sheet forming unit, adds the molded SMC sheet material that obtains of leached glass fiber then; Content of glass fiber in the moulding process in the hierarchy of control is 15 ± 2%, and viscosity is 300Pas～400Pas.
4. with step 3. the SMC sheet material multiviscosisty 11h under 40 ℃～45 ℃ temperature after the moulding obtain door-plate and use sheet molding compound.
The molding shrinkage of the sheet molding compound that present embodiment makes≤0.01%.
(embodiment 2～embodiment 5)
Each embodiment and embodiment 1 are basic identical, and difference is seen table 1.
Table 1
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Unsaturated polyester resin | 50 parts of metaphenylene unsaturated polyester resins | 55 parts of metaphenylene unsaturated polyester resins | 45 parts of metaphenylene unsaturated polyester resins | 50 parts of metaphenylene unsaturated polyester resins | 50 parts of metaphenylene unsaturated polyester resins |
| Shrinking agent | 50 parts of saturated polyester thermoplastic resins | 45 parts of saturated polyester thermoplastic resins | 55 parts of PVA | 50 parts of saturated polyester thermoplastic resins | 50 parts of PVA |
| Inner pattern releasing agent applicable | 4 parts of Zinic stearass | 4 parts of Zinic stearass | 3 parts of calcium stearates | 3 parts of Zinic stearass | 4 parts of calcium stearates |
| Thickening material | Concentration is 2.6 parts of the magnesia magmas of 50wt% | Concentration is 2.6 parts of the magnesia magmas of 50wt% | Concentration is 3 parts of the magnesia magmas of 40wt% | Concentration is 2 parts of the magnesia magmas of 60wt% | Concentration is 3 parts of the magnesia magmas of 30wt% |
| Wetting dispersing agent | 1.3 parts of BYK-W9010 type wetting dispersing agents | 1.3 parts of BYK-W9010 type wetting dispersing agents | 1.5 parts of BYK-W9010 type wetting dispersing agents | 1.2 parts of BYK-W9010 type wetting dispersing agents | 1.4 parts of BYK-W9010 type wetting dispersing agents |
| Spun glass | 70 parts | 70 parts | 80 parts | 100 parts | 65 parts |
| Filler | 200 parts in lime carbonate | 180 parts in lime carbonate | 190 parts in lime carbonate | 180 parts in lime carbonate | 200 parts in lime carbonate |
| Step is the viscosity of middle system 2. | 10Pa·s～20Pa·s | 5Pa·s～15Pa·s | 15Pa·s～25Pa·s | 10Pa·s～20Pa·s | 10Pa·s～20Pa·s |
| Step is the viscosity of middle system 3. | 300Pa·s～ 400Pa·s | 250Pa·s～ 350Pa·s | 350Pa·s～ 450Pa·s | 300Pa·s～ 400Pa·s | 300Pa·s～ 400Pa·s |
| The 3. middle content of glass fiber of step | 15±2% | 20±2% | 25±2% | 10±2% | 15±2% |
| Molding shrinkage | ≤0.01% | ≤0.01% | ≤0.01% | ≤0.01% | ≤0.01% |
Claims (7)
1. a door-plate is used sheet molding compound, it is characterized in that: the molding shrinkage of said sheet molding compound≤0.01%.
2. door-plate according to claim 1 is used sheet molding compound, it is characterized in that being processed by the raw material of following weight parts:
45 parts～55 parts of unsaturated polyester resins, 45 parts～55 parts of shrinking agents, 3 parts～4 parts of inner pattern releasing agent applicables, 2 parts～3 parts of thickening materials, 1.2 parts～1.5 parts of wetting dispersing agents, 65 parts～100 parts in spun glass, 180 parts～200 parts of fillers.
3. door-plate according to claim 2 is used sheet molding compound; It is characterized in that: described unsaturated polyester resin is a metaphenylene unsaturated polyester resin; Its viscosity is 0.6Pas～0.8Pas; Acid number is 14mgKOH/g～20mgKOH/g, and amount of solid is 63%～67%, and gelation time is 8min～14min.
4. door-plate according to claim 2 is used sheet molding compound, it is characterized in that: described shrinking agent is saturated polyester thermoplastic resin or PVA.
5. door-plate according to claim 2 is used sheet molding compound, it is characterized in that: described inner pattern releasing agent applicable is Zinic stearas or calcium stearate; Described thickening material is that concentration is the magnesia magma of 30wt%～60wt%; Described wetting dispersing agent is a BYK-W9010 type wetting dispersing agent; Described spun glass is the short glass fiber of 25.4mm for the length that after too short cutting, obtains; Described filler is a lime carbonate.
6. the described door-plate of one of claim 2 to 5 is characterized in that having following steps with the preparation method of sheet molding compound:
1. it is for use to take by weighing unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler according to prescription;
2. the unsaturated polyester resin that 1. step is taken by weighing, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in the mixing vessel, under the rotating speed of 1000rpm～1500rpm, carry out high speed dispersion 5min～10min, mix and obtain resin paste; And control resin paste viscosity be 5Pas～25Pas, moisture content≤0.15%;
3. the resin paste that 2. step is obtained is poured in the resin paste storage tank of SMC sheet forming unit, and online adding thickening material adds the molded SMC sheet material that obtains of leached glass fiber then in SMC sheet forming unit;
4. with step 3. the SMC sheet material multiviscosisty 10h～12h under 40 ℃～45 ℃ temperature after the moulding obtain door-plate and use sheet molding compound.
7. door-plate according to claim 6 is characterized in that with the preparation method of sheet molding compound: the content of glass fiber in the step moulding process 3. in the hierarchy of control is 8%～27%, and the viscosity of the hierarchy of control is 200Pas～500Pas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210054712.2A CN102604351B (en) | 2012-03-05 | 2012-03-05 | Platy mold plastic for door sheet and preparing method of platy mold plastic |
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| CN201210054712.2A CN102604351B (en) | 2012-03-05 | 2012-03-05 | Platy mold plastic for door sheet and preparing method of platy mold plastic |
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| CN102604351B CN102604351B (en) | 2014-03-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140296383A1 (en) * | 2012-01-18 | 2014-10-02 | Shanghai Kumhosunny Plastics Co., Ltd. | Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate |
| 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 |
| CN107418174A (en) * | 2017-08-01 | 2017-12-01 | 常州天马集团有限公司（原建材二五三厂） | A kind of low volatilization high surface platelets moulding compound of low-density and preparation method thereof |
| CN108250708A (en) * | 2017-12-20 | 2018-07-06 | 安徽鑫普瑞复合材料有限公司 | A kind of high tenacity SMC moulding compounds and its manufacturing method |
| CN110641126A (en) * | 2019-10-18 | 2020-01-03 | 广州智法装饰材料有限公司 | Preparation method of environment-friendly PET seamless door plate |
| CN114410095A (en) * | 2021-12-31 | 2022-04-29 | 江苏常阳科技有限公司 | Sheet molding compound for adsorbing and degrading formaldehyde and preparation method thereof |
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| CN101619160A (en) * | 2009-08-18 | 2010-01-06 | 振石集团华美复合新材料有限公司 | Antimicrobial sheet molding compound and preparation method thereof |
| CN101831153A (en) * | 2010-04-28 | 2010-09-15 | 北京汽车玻璃钢有限公司 | Composition and flake moulding materials prepared by combination |
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| CN101265357A (en) * | 2008-04-30 | 2008-09-17 | 宁波华缘玻璃钢电器制造有限公司 | Self-lubricating wear-resisting agglomerate moulding material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140296383A1 (en) * | 2012-01-18 | 2014-10-02 | Shanghai Kumhosunny Plastics Co., Ltd. | Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate |
| US8865795B1 (en) * | 2012-01-18 | 2014-10-21 | Konica Minolta Business Technologies, Inc. | Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate |
| 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 |
| CN107418174A (en) * | 2017-08-01 | 2017-12-01 | 常州天马集团有限公司（原建材二五三厂） | A kind of low volatilization high surface platelets moulding compound of low-density and preparation method thereof |
| CN108250708A (en) * | 2017-12-20 | 2018-07-06 | 安徽鑫普瑞复合材料有限公司 | A kind of high tenacity SMC moulding compounds and its manufacturing method |
| CN110641126A (en) * | 2019-10-18 | 2020-01-03 | 广州智法装饰材料有限公司 | Preparation method of environment-friendly PET seamless door plate |
| CN114410095A (en) * | 2021-12-31 | 2022-04-29 | 江苏常阳科技有限公司 | Sheet molding compound for adsorbing and degrading formaldehyde and preparation method thereof |
| CN114410095B (en) * | 2021-12-31 | 2023-02-03 | 江苏常阳科技有限公司 | Sheet molding compound for adsorbing and degrading formaldehyde and preparation method thereof |
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| CN102604351B (en) | 2014-03-26 |
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Address after: 213127 No. 309 Huang Hai Road, Xinbei District, Jiangsu, Changzhou Patentee after: Changzhou Tianma Group Co., Ltd. (former building material 253 factory) Address before: 213127 No. 501 ERON North Road, Xinbei District, Jiangsu, Changzhou Patentee before: Tianmo Group Co., Ltd., Changzhou |