CN105269836B - A kind of preparation method of SMC auto-parts product - Google Patents
A kind of preparation method of SMC auto-parts product Download PDFInfo
- Publication number
- CN105269836B CN105269836B CN201510808154.8A CN201510808154A CN105269836B CN 105269836 B CN105269836 B CN 105269836B CN 201510808154 A CN201510808154 A CN 201510808154A CN 105269836 B CN105269836 B CN 105269836B
- Authority
- CN
- China
- Prior art keywords
- smc
- grid
- product
- mould
- auto
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention provides a kind of preparation method of SMC auto-parts product, including：Mould is heated；Weigh and cut out；Laying is carried out according to pyramid, grid SMC is layed in the bottom of lower mould, glass fibers SMC lays in grid SMC tops successively according to size is descending；Upper mould, with prestissimo matched moulds, starts with the 10m/s matched moulds of speed 3, then in the 1400T/m of pressure 800 before contacting material in contacting material2Under be molded；The steps such as pressurize shaping.The risk being broken when being subjected to external impact present invention reduces auto parts and components；Reduce fracture and the risk for deforming when auto parts and components are subjected to external pressure.
Description
Technical field
Present invention relates particularly to a kind of preparation method of SMC auto-parts product.
Background technology
It is fine that the SMC that the production of current SMC (sheet molding compound) auto-parts product is used is mainly unordered staple glass
Dimension SMC, and bending strength, tensile strength, the impact strength of existing unordered short glass fiber SMC cannot to meet load high
Auto-parts requirement,
The content of the invention
The technical problem to be solved in the present invention, is to provide a kind of preparation method of SMC auto-parts product.
What the present invention was realized in：A kind of preparation method of SMC auto-parts product, comprises the following steps：
(1) mould heating：The temperature difference does not surpass everywhere for heating supreme 150 DEG C of the mould temperature of mould, lower 145 DEG C of mould temperature, and mould
Cross 10 DEG C；
(2) weigh and cut out：Weight according to product is weighed to glass fibers SMC and grid SMC, and is cut
Grid SMC to product size 60%-100%, wherein the size of grid SMC for maximum；
(3) laying：Laying is carried out according to pyramid, grid SMC is layed in the bottom of lower mould, glass fibers
SMC lays in grid SMC tops successively according to size is descending；
(4) matched moulds：Upper mould, with prestissimo matched moulds, starts to be closed with speed 3-10m/s before contacting material in contacting material
Mould, then in pressure 800-1400T/m2Under be molded；
(5) pressurize shaping：Pressurize shaping is carried out according to dwell time/product main wall thick=60s/mm, finally die sinking is taken out
Product.
Preferably, the Gitterfasern species in the grid SMC is glass fibre, carbon fiber or aramid fiber.
Preferably, in step (3) laying, the laying number of plies of grid SMC is 1~2 layer.
Preferably, the size of the grid SMC is the 60%-90% of product size.
The advantage of the invention is that：Reduce auto parts and components and be subjected to the risk being broken during external impact；Reduce
Fracture and the risk for deforming when auto parts and components are subjected to external pressure.
Specific embodiment
A kind of preparation method of SMC auto-parts product, comprises the following steps：
(1) mould heating：The temperature difference does not surpass everywhere for heating supreme 150 DEG C of the mould temperature of mould, lower 145 DEG C of mould temperature, and mould
Cross 10 DEG C；
(2) weigh and cut out：Weight according to product is weighed to glass fibers SMC and grid SMC, and is cut
(wherein the size of grid SMC is cut to product to grid SMC to the 60%-100% of product size respectively in embodiment 1,2,3,4
Size 60%, 80%, 90%, 100%), wherein the size of grid SMC for maximum；Grid SMC is layered on the bottom of mould,
Therefore size needs maximum, can carry out grid SMC cuttings according to maximum area needed for mould laying.The size one of the grid SMC
As be the 60%-90% of product size, need to reach 100% covering in certain strength requirement region high.In the grid SMC
Gitterfasern species is glass fibre, carbon fiber or aramid fiber (can be selected according to the requirement of intensity).
(3) laying：Laying is carried out according to pyramid, grid SMC is layed in the bottom of lower mould, glass fibers
SMC lays in grid SMC tops successively according to size is descending；Glass fibers SMC first touches mould, nothing during matched moulds
Sequence glass fibre SMC mobility preferably, can by gas from mold center to mould outside catch up with.The laying number of plies of grid SMC is 1
~2 layers (wherein the number of plies of grid SMC is respectively 1 layer, 1 layer, 2 layers, 2 layers in embodiment 1,2,3,4), but above grid SMC
At least 1 layer unordered chopped SMC need to be used, reason is the good fluidity of unordered short glass fiber SMC, and fillibility is good, easily will
Gas discharges mould so that products appearance face is smooth, and uniformly, spray painting reaches class-A surfaces requirement.
(4) matched moulds：Upper mould, with prestissimo matched moulds, starts to be closed with speed 3-10m/s before contacting material in contacting material
Mould, then in pressure 800-1400T/m2Under be molded；Wherein in embodiment 1,2,3,4, the closure pressing speed after contacting material
Respectively 3m/s, 5m/s, 7m/s, 9m/s, 10m/s, molding pressure are respectively 800T/m2、1000T/m2、1200T/m2、1400T/
m2
Upper mould is fast in leading portion closure pressing speed, is that resin solidifies on mold heat when preventing closure pressing speed excessively slow, in product table
Face forms dry spot；Back segment closure pressing speed is slow so that resin is promoted by slow toward die edge, beneficial to exhaust.
(5) pressurize shaping：Pressurize shaping is carried out according to dwell time/product main wall thick=60s/mm so that resin has foot
There is curing reaction in mould in the enough time；Product is taken out in finally die sinking.
The property indices of obtained SMC auto-parts products of the invention are as follows：
Grid glass SMC and complete unordered SMC product process and performance comparison
Note：
The unordered SMC of 30%GF are：Auto-parts product (the product of prior art that 30% glass fibers SMC is made
Product).
30%GF is with 1 layer of grid SMC：The auto-parts system that 30% glass fibers are made with 1 layer of grid SMC
Product.
30%GF is with 2 layers of grid SMC：The auto-parts system that 30% glass fibers are made with 2 layers of grid SMC
Product.
The present invention has advantages below：
1. grid SMC is laid in product non-appearance face, and the requirement of product class-A surfaces is not influenceed；
2. the bending strength of SMC auto-parts product is high, resists external force deformability strong；
3. the impact strength of SMC auto-parts product is high, resists external impacts ability strong；
4. Gitterfasern is in article inner surface, can prevent SMC auto-parts product from outbreak-crash occurring.
Claims (4)
1. a kind of preparation method of SMC auto-parts product, it is characterised in that：Comprise the following steps：
(1) mould heating：The temperature difference is no more than 10 everywhere for heating supreme 150 DEG C of the mould temperature of mould, lower 145 DEG C of mould temperature, and mould
℃；
(2) weigh and cut out：Weight according to product is weighed to glass fibers SMC and grid SMC, and trimmed grid
SMC to product size 60%-100%, wherein the size of grid SMC for maximum；
(3) laying：Laying is carried out according to pyramid, grid SMC is layed in the bottom of lower mould, glass fibers SMC
Laid successively in grid SMC tops according to size is descending；
(4) matched moulds：Upper mould with prestissimo matched moulds, starts with speed 3-10m/s matched moulds, so before contacting material in contacting material
Afterwards in pressure 800-1400T/m2Under be molded；
(5) pressurize shaping：Pressurize shaping is carried out according to dwell time/product main wall thick=60s/mm, product is taken out in finally die sinking.
2. a kind of preparation method of SMC auto-parts product as claimed in claim 1, it is characterised in that：The grid SMC
In Gitterfasern species be glass fibre, carbon fiber or aramid fiber.
3. a kind of preparation method of SMC auto-parts product as claimed in claim 1, it is characterised in that：The step (3)
In laying, the laying number of plies of grid SMC is 1~2 layer.
4. a kind of preparation method of SMC auto-parts product as claimed in claim 1, it is characterised in that：The grid SMC
Size for product size 60%-90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808154.8A CN105269836B (en) | 2015-11-20 | 2015-11-20 | A kind of preparation method of SMC auto-parts product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808154.8A CN105269836B (en) | 2015-11-20 | 2015-11-20 | A kind of preparation method of SMC auto-parts product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105269836A CN105269836A (en) | 2016-01-27 |
| CN105269836B true CN105269836B (en) | 2017-07-07 |
Family
ID=55140088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510808154.8A Active CN105269836B (en) | 2015-11-20 | 2015-11-20 | A kind of preparation method of SMC auto-parts product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105269836B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624177A (en) * | 2018-12-28 | 2019-04-16 | 赛史品威奥（唐山）结构复合材料有限公司 | A kind of picard cargo box back bucket once through moulding technology |
| CN112248485B (en) * | 2020-09-15 | 2023-03-10 | 广州汽车集团股份有限公司 | Manufacturing method of fender |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1954989A (en) * | 2005-10-26 | 2007-05-02 | 原桂才 | Process for manufacturing table tennis table top by resin-base glass fibre reinforced fibre plate |
| CN1995125A (en) * | 2006-12-21 | 2007-07-11 | 江苏双良复合材料有限公司 | Glass fiber felt reinforced polyproplene composite material and its product rubber seasaw |
| CN103213231A (en) * | 2013-03-20 | 2013-07-24 | 成都顺美国际贸易有限公司 | Mold pressing method for unidirectional high strength SMC molded product |
| CN103465423B (en) * | 2013-09-06 | 2015-08-19 | 陕西华特新材料股份有限公司 | A kind of preparation method of fiberglass signal casing |
| CN103978614B (en) * | 2014-05-07 | 2016-05-25 | 福建海源新材料科技有限公司 | The SMC die press technology for forming of Discussion on architecture Angle formwork |
| CN104029445B (en) * | 2014-06-24 | 2016-03-09 | 浙江杉盛模塑科技有限公司 | SMC goods and preparation method thereof |
-
2015
- 2015-11-20 CN CN201510808154.8A patent/CN105269836B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105269836A (en) | 2016-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10118349B2 (en) | Press moulding method | |
| CN106626662B (en) | Sandwich structure composite material and preparation method thereof | |
| TWI520844B (en) | Method for fabricating preform and fiber-reinforced resin molded article | |
| CN103963319A (en) | Prepreg/resin film infiltration co-curing forming method for composite stiffened wallboards | |
| CN106457697B (en) | Method for manufacturing the SMC components for being equipped with unidirectional fibre scrim | |
| CN102765198A (en) | Vacuum assisted molding system of composite and molding method of composite | |
| JP2016506327A5 (en) | ||
| CN105269833B (en) | A kind of thermoplastic composite secondary mould pressing forming method | |
| CN102555232A (en) | Process and device for multilayer bag pressing production of fibrous composite plates | |
| CN109109339A (en) | The preparation of thermoplastic resin based composite material and the method for enhancing anticollision component | |
| CN105269836B (en) | A kind of preparation method of SMC auto-parts product | |
| CN108015923A (en) | A kind of processing and forming technology of fiber reinforced thermolplastic composite material product | |
| CN102476457B (en) | A kind of thermoforming method of co-woven continuous fiber reinforced thermoplastic structural plate | |
| CN104057622A (en) | Two-stage forming process for carbon fiber composite | |
| CN204955474U (en) | Solidification equipment behind hollow section bar of pultrusion combined material | |
| JP2018507128A5 (en) | ||
| CN108215241B (en) | Rapid molding method of resin-based composite material | |
| CN107283875A (en) | It is a kind of based on can thermoplastic fibre composite case and bag and preparation method thereof | |
| CN107696522A (en) | A kind of carbon fibre fabric method for forming parts at band R angles | |
| CN107351429A (en) | A kind of method of the polymer matrix composites Forming Quality of raising Z Pin enhancings | |
| CN106493969A (en) | A kind of manufacture craft in safety shoe packet header and the safety shoe packet header of making | |
| TW201630737A (en) | Heat insulation material and method for producing same | |
| CN108215242B (en) | Forming method of resin-based composite material | |
| CN109940908A (en) | A kind of moulding process of carbon fiber and phenolic resin composite | |
| CN106827711A (en) | Electronic product casing and its manufacture 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 |