CN102604351B - 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
- Publication number
- CN102604351B CN102604351B CN201210054712.2A CN201210054712A CN102604351B CN 102604351 B CN102604351 B CN 102604351B CN 201210054712 A CN201210054712 A CN 201210054712A CN 102604351 B CN102604351 B CN 102604351B
- Authority
- CN
- China
- Prior art keywords
- parts
- platy
- unsaturated polyester
- molding compound
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
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 sheet molding compound and preparation method thereof for a kind of door-plate.
Background technology
Sheet molding compound (English name is Sheet molding compound, is called for short SMC) is a kind of mold pressing starting material of being made by unsaturated polyester resin, shrinking agent, glass fibre, filler and various auxiliary agent.It has superior electric property and corrosion resistance nature, particularly mechanical property and can compare favourably with part metals material, thereby is widely used in carrier vehicle, building, the industry such as electric.
More and more faster along with sheet molding compound development, also more and more higher to its performance requriements, the molding shrinkage of sheet molding compound is in the market conventionally 0.1%～1%, and its mobility and fillibility poor, if this sheet molding compound is pressed into the words of door-plate, can affect the surface finish of door-plate, reduce the qualification rate of door-plate product.
Summary of the invention
One of object of the present invention is to address the above problem, and a kind of door-plate sheet molding compound with excellent mobility and fillibility and molding shrinkage≤0.01% is provided.
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 sheet molding compound, its molding shrinkage≤0.01%.It is to be made 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, glass fibre, 180 parts～200 parts of fillers.
Described unsaturated polyester resin is 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 polyvinyl acetate (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 BYK-W9010 type wetting dispersing agent; The short glass fiber that described glass fibre is 25.4mm for the length that obtains after too short cutting; Described filler is calcium carbonate.
The technical scheme that realizes another object of the present invention is: the preparation method of sheet molding compound for a kind of door-plate, has following steps: 1. according to formula, take unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler stand-by; 2. the unsaturated polyester resin 1. step being taken, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in mixing vessel, carry out high speed dispersion 5min～10min under the rotating speed of 1000rpm～1500rpm, mix and obtain resin paste; And the viscosity of controlling resin paste is 5Pas～25Pas, moisture content≤0.15%; 3. the resin paste 2. step being obtained is poured in the resin paste storage tank of SMC sheet forming unit, adds online thickening material, then in SMC sheet forming unit, adds the molded SMC of the obtaining sheet material of leached glass fiber; 4. by step 3. the SMC sheet material multiviscosisty 10h～12h at the temperature of 40 ℃～45 ℃ after moulding obtain door-plate sheet molding compound.
Content of glass fiber in 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, by unsaturated polyester resin and the selection of shrinking agent material and the control of weight ratio (1: 1 left and right), finally can make the sheet molding compound of molding shrinkage≤0.01%.(2) the present invention, by controlling magnesian consumption and moisture content in preparing the process of sheet molding compound, controls multiviscosisty degree and final viscosity, makes the sheet molding compound finally making have excellent mobility and fillibility.(3) sheet molding compound making due to the present invention has extremely low molding shrinkage and excellent mobility and fillibility, and the door-plate surface finish being pressed into it is high, has improved the qualification rate of door-plate product.
Embodiment
(embodiment 1)
The door-plate of the present embodiment is made 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, glass fibre, 200 parts of fillers.
Wherein unsaturated polyester resin is 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 the saturated polyester thermoplastic resin that the trade mark of Changzhou heavenly steed Rui Sheng matrix material company limited production is LAP-1.
Inner pattern releasing agent applicable is 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.
The short glass fiber that glass fibre is 25.4mm for the length that obtains after too short cutting.
Filler is calcium carbonate.
This door-plate has following steps by the preparation method of sheet molding compound:
1. according to formula, take unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler stand-by.
2. the unsaturated polyester resin 1. step being taken, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in mixing vessel, under the rotating speed of 1200rpm, carry out high speed dispersion 8min, mix and obtain resin paste, and the viscosity of controlling resin paste is 10Pas～20Pas, moisture content≤0.15%.
3. the resin paste 2. step being obtained is poured in the resin paste storage tank of SMC sheet forming unit, adds online thickening material and look to stick with paste, and then in SMC sheet forming unit, adds the molded SMC of the obtaining sheet material of leached glass fiber; Content of glass fiber in moulding process in the hierarchy of control is 15 ± 2%, and viscosity is 300Pas～400Pas.
4. by step 3. the SMC sheet material multiviscosisty 11h at the temperature of 40 ℃～45 ℃ after moulding obtain door-plate sheet molding compound.
Molding shrinkage≤0.01% of the sheet molding compound that the present embodiment makes.
(embodiment 2～embodiment 5)
Each embodiment is substantially the same manner as Example 1, and difference is in 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 polyvinyl acetate (PVA) | 50 parts of saturated polyester thermoplastic resins | 50 parts of polyvinyl acetate (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 |
| Glass fibre | 70 parts | 70 parts | 80 parts | 100 parts | 65 parts |
| Filler | 200 parts, calcium carbonate | 180 parts, calcium carbonate | 190 parts, calcium carbonate | 180 parts, calcium carbonate | 200 parts, calcium 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 |
| Step is middle content of glass fiber 3. | 15±2% | 20±2% | 25±2% | 10±2% | 15±2% |
| Molding shrinkage | ≤0.01% | ≤0.01% | ≤0.01% | ≤0.01% | ≤0.01% |
Claims (4)
1. a door-plate sheet molding compound, is characterized in that: molding shrinkage≤0.01% of described sheet molding compound;
Described sheet molding compound is made 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, glass fibre, 180 parts～200 parts of fillers;
Described unsaturated polyester resin is 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.
2. door-plate sheet molding compound according to claim 1, 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 BYK-W9010 type wetting dispersing agent; The short glass fiber that described glass fibre is 25.4mm for the length that obtains after too short cutting; Described filler is calcium carbonate.
3. the preparation method of sheet molding compound for the door-plate described in claim 1 or 2, is characterized in that having following steps:
1. according to formula, take unsaturated polyester resin, shrinking agent, inner pattern releasing agent applicable, thickening material, wetting dispersing agent and filler stand-by;
2. the unsaturated polyester resin 1. step being taken, shrinking agent, inner pattern releasing agent applicable, wetting dispersing agent and filler are poured in mixing vessel, carry out high speed dispersion 5min～10min under the rotating speed of 1000rpm～1500rpm, mix and obtain resin paste; And the viscosity of controlling resin paste is 5Pas～25Pas, moisture content≤0.15%;
3. the resin paste 2. step being obtained is poured in the resin paste storage tank of SMC sheet forming unit, adds online thickening material, then in SMC sheet forming unit, adds the molded SMC of the obtaining sheet material of leached glass fiber;
4. by step 3. the SMC sheet material multiviscosisty 10h～12h at the temperature of 40 ℃～45 ℃ after moulding obtain door-plate sheet molding compound.
4. the preparation method of sheet molding compound for door-plate according to claim 3, is characterized in that: the content of glass fiber in step moulding process 3. in the hierarchy of control is 8%～27%, and the viscosity of the hierarchy of control is 200Pas～500Pas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210054712.2A CN102604351B (en) | 2012-03-05 | 2012-03-05 | Platy mold plastic for door sheet and preparing method of platy mold plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210054712.2A CN102604351B (en) | 2012-03-05 | 2012-03-05 | Platy mold plastic for door sheet and preparing method of platy mold plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102604351A CN102604351A (en) | 2012-07-25 |
| CN102604351B true CN102604351B (en) | 2014-03-26 |
Family
ID=46522152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210054712.2A Active CN102604351B (en) | 2012-03-05 | 2012-03-05 | Platy mold plastic for door sheet and preparing method of platy mold plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102604351B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214808B (en) * | 2012-01-18 | 2016-12-14 | 柯尼卡美能达商用科技株式会社 | Use containing regenerating PC and the photocopier of regenerative PET halogen-free fire-proof resin composition or the exterior member of printer |
| 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2012
- 2012-03-05 CN CN201210054712.2A patent/CN102604351B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102604351A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102604351B (en) | Platy mold plastic for door sheet and preparing method of platy mold plastic | |
| CN100564448C (en) | A kind of method for preparing molded epoxy resin sheet and products thereof | |
| CN103497484B (en) | Gao Mo, high-strength, high heat-resisting polyformaldehyde composite material and preparation method thereof | |
| CN100556682C (en) | A kind of molded epoxy resin sheet and preparation method thereof | |
| CN105585831B (en) | A kind of polycarbonate/polybutylene terephthalate and its preparation method and application | |
| CN104945856A (en) | High-transparency anti-yellowing epoxy resin composite material preparing method and application thereof | |
| CN107406607B (en) | Two-component epoxy resin composition for fiber-reinforced composite material, and fiber-reinforced composite material | |
| CN101845198B (en) | Method for preparing thermosetting phenolic resin film | |
| CN103833919B (en) | A kind of air-dried unsaturated polyester resin and production method thereof | |
| CN103737699A (en) | Specially shaped wood fiber molded product enclosed forming method | |
| CN105694421B (en) | A kind of fiber reinforced thermolplastic composite material and preparation method thereof | |
| CN101575445B (en) | Low-temperature fast curing polyester moulding compound and preparation method thereof | |
| CN103819927A (en) | Light-colored antistatic liquid crystal polymer composite material and preparation method thereof | |
| CN103554691B (en) | A kind of Automotive interior product | |
| KR20200083352A (en) | Polyurethane Composite Foam Having Silica Aerogel And The Method Thereof | |
| CN103145939A (en) | Modification method of xylene formaldehyde resin | |
| CN103923312A (en) | High-strength and low-retraction casting nylon composite material and preparation method thereof | |
| CN104098875A (en) | Continuous fiber-enhanced CBT prepreg, and preparation method and application thereof | |
| CN105542506A (en) | SMC (sheet molding compound) material for automobile accessories and preparation method thereof | |
| CN109940908A (en) | A kind of moulding process of carbon fiber and phenolic resin composite | |
| CN108192087A (en) | Mould pressing process low shrink resin | |
| CN107418174A (en) | A kind of low volatilization high surface platelets moulding compound of low-density and preparation method thereof | |
| CN102660007A (en) | Application of substituted alkane in saturated polyester resin | |
| CN107722234A (en) | A kind of isocyanate-terminated polyethers modified epoxy and preparation method thereof | |
| CN103980673B (en) | Oxidation and corrosion automotive connector isolator and its preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGZHOU TIANMA GROUP CO., LTD. (BUILDING TWO FIV Free format text: FORMER NAME: TIANMO GROUP CO., LTD., CHANGZHOU |
|
| CP03 | Change of name, title or address |
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 |