CN106366850B - Wandering star wheel - Google Patents

Wandering star wheel Download PDF

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Publication number
CN106366850B
CN106366850B CN201610757177.5A CN201610757177A CN106366850B CN 106366850 B CN106366850 B CN 106366850B CN 201610757177 A CN201610757177 A CN 201610757177A CN 106366850 B CN106366850 B CN 106366850B
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parts
glass fiber
flame
epoxy resin
fiber board
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CN106366850A (en
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李清亮
吴兰中
李子龙
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Shanghai Guoji Electronic Material Co ltd
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Shanghai Guoji Electronic Material Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Reinforced Plastic Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a planetary wheel, which is prepared by the following preparation method: (1) laminating: stacking a plurality of prepregs to obtain a plate; (2) carrying out hot pressing on the plate to obtain the composite material; the raw materials of the special glass fiber board glue solution for the planetary wheel for preparing the prepreg comprise the following components in parts by weight: 550-650 parts of flame-retardant modified liquid halogen-free epoxy resin, 400-500 parts of flame-retardant modified solid halogen-free epoxy resin, 30-50 parts of curing agent, 0.30-0.50 part of curing accelerator, 700-800 parts of organic solvent and 80-130 parts of inorganic filler. The planetary wheel has good heat resistance and chemical resistance, can reduce pollution to the environment, and has higher toughness than the existing products.

Description

Wandering star wheel
Technical Field
The invention relates to a planetary wheel.
Background
The wandering wheel is a fixture applied to various plane polishing procedures of glass, lenses, silicon wafers, hard disks and the like, and is also called as a polishing jig, a polishing pad and the like; the polishing process is developed for years and is mature, in recent years, mass popularization of mass electronic products such as mobile phones and tablet personal computers is achieved, touch screens are developed rapidly, lens polishing is developed for one thousand miles, and the raw materials of the wandering star wheel are changed from the original blue steel sheet into FR-4 glass fiber boards.
At present, the main material of the wandering star wheel is FR-4 glass fiber board, various characteristics are integrated, the glass fiber board is the most suitable material for manufacturing the wandering star wheel in the current market, and the wandering star wheel has the advantages that: wear resistance, easy processing and forming, simple processing procedure, no damage to polished workpieces and the like. However, it also has certain disadvantages, such as: the glass fiber board is mostly electronic insulating material, and is not high to the wear-resisting parameter requirement of panel, therefore for the sheetmetal, glass fiber's wearability is not enough, and glass fiber board toughness is little, the fragility is big, hardness is low, and the wandering star wheel that makes with this material in use, the teeth of a cogwheel loss is fast, yielding, and life is short.
Based on the wandering star wheel and being made by FR-4 glass fiber board, but in specific use, the wandering star wheel wearability that glass fiber board made is not enough, and intensity is little, and the machine during operation can exert pressure to the wandering star wheel, and then life is short, and the quality is unstable for cost is also high itself. The FR-4 glass fiber board is used for producing the wandering star wheel, so that the thickness of the FR-4 glass fiber board is required to be uniform and consistent and enough mechanical strength is required to be ensured, and the produced wandering star wheel has self-lubricating property.
Disclosure of Invention
The invention provides a special glass fiber board glue solution for a planetary gear, a prepreg, a glass fiber board and a preparation method thereof, aiming at overcoming the defects of low toughness, low strength and the like of the special glass fiber board for the planetary gear in the prior art. The glass fiber board special for the wandering star wheel, provided by the invention, can reduce the friction coefficient of the wandering star wheel, reduce the reject ratio of products, prolong the service life of the products and reduce the production cost, and the thickness of the board special for the wandering star wheel can be thinner and uniform under the condition of ensuring the compressive strength.
The invention solves the technical problems through the following technical scheme:
the invention provides a special glass fiber board glue solution for a wandering star wheel, which is prepared from the following raw materials in parts by weight: 550-650 parts of flame-retardant modified liquid halogen-free epoxy resin, 400-500 parts of flame-retardant modified solid halogen-free epoxy resin, 30-50 parts of curing agent, 0.30-0.50 part of curing accelerator, 700-800 parts of organic solvent and 80-130 parts of inorganic filler.
The flame-retardant modified liquid halogen-free epoxy resin and the flame-retardant modified solid halogen-free epoxy resin can adopt various conventionally used flame-retardant modified halogen-free epoxy resins in glass fiber board glue solution in the field. The flame-retardant modified liquid halogen-free epoxy resin is preferably DOPO type liquid halogen-free flame-retardant epoxy resin. The flame-retardant modified solid halogen-free epoxy resin is preferably DOPO type solid halogen-free flame-retardant epoxy resin. The DOPO type liquid halogen-free flame-retardant epoxy resin preferably has the following performance indexes: an epoxy value of 320-. The DOPO type solid halogen-free flame-retardant epoxy resin has the following performance indexes: an epoxy value of 970-1070g/eg and a viscosity at 150 ℃ of 8000-11000 mPas. .
The weight part of the flame-retardant modified liquid halogen-free epoxy resin is preferably 600-650 parts.
The curing agent may be one conventionally used in the art, and is preferably Dicyandiamide (DICY). The curing agent is preferably 40 to 50 parts by weight.
Among them, the curing accelerator may be one conventionally used in the art, and preferably is diphenylimidazole (2 PI). The weight portion of the curing accelerator is preferably 0.35-0.45.
Wherein the inorganic filler is preferably silica and/or talc. The weight part of the silicon dioxide is preferably 45-60 parts. The weight portion of the talcum powder is preferably 70-80 parts.
Among them, the solvent may be a solvent conventionally used in the art, preferably one or more of acetone, butanone and Dimethylformamide (DMF). When the organic solvent is acetone, butanone and dimethylformamide, the weight ratio of acetone, butanone and dimethylformamide is preferably 3: 1: 6.
the invention also provides a preparation method of the special glass fiber board glue solution for the wandering star wheel, which comprises the following steps:
(1) mixing the curing agent, the curing accelerator and the solvent, and stirring until the curing agent, the curing accelerator and the solvent are dissolved to obtain a mixture A;
(2) mixing the mixture A with the resin, and uniformly stirring to obtain a mixture B;
(3) and mixing the mixture B with the inorganic filler under the stirring condition, shearing at the speed of 2200-2800 rpm, and curing to obtain the special glass fiber board glue solution for the planetary gear.
In the preparation method of the glass fiber board glue solution special for the wandering star wheel, all raw material components are as described in the glue solution preparation component.
In step (1), the stirring method and conditions may be those conventional in the art. The stirring time is based on complete dissolution of the curing agent and the curing accelerator, and is preferably 3 to 6 hours. The rotation speed of the stirring is preferably 800 to 1500 rpm.
In step (2), the stirring method and conditions may be those conventional in the art. The stirring time is preferably 3 to 6 hours, based on the curing agent and the curing accelerator being completely dissolved. The rotation speed of the stirring is preferably 1000 to 1500 rpm.
In step (3), the method and conditions for the shearing may be those conventional in the art. The shearing time is preferably 1.0 to 2.0 hours. The rotation speed of the shearing is preferably 2500-2800 rpm. In step (3), the method and conditions for the aging may be those conventional in the art. The curing is preferably carried out by stirring at a rotating speed of 1200-1600 rpm for 8-12 hours, and the gel time of the obtained glue solution is generally 230-260 s.
The invention also provides a preparation method of the glass fiber plate prepreg special for the wandering star wheel, which comprises the following steps: and coating the glue solution on the electronic-grade glass fiber cloth, and then drying to obtain the glass fiber cloth.
The electronic grade glass fiber cloth is an electronic grade glass fiber cloth which is conventionally used in the field, and is preferably the electronic grade glass fiber cloth 7628.
Preferably, in the preparation method of the glass fiber board prepreg special for the wandering star wheel, the equipment used for coating is a vertical gluing machine.
Preferably, in the preparation method of the glass fiber board prepreg special for the wandering star wheel, the coating speed is 16-23 m/min; more preferably 18 to 20 m/min.
Preferably, the drying temperature is 180-205 ℃; more preferably 190 to 200 ℃.
The invention also provides a glass fiber board prepreg special for the wandering star wheel, which is prepared by the preparation method of the glass fiber board prepreg special for the wandering star wheel.
In the invention, the resin content of the glass fiber board prepreg special for the wandering star wheel is generally 30-35 wt%. The gel time of the glass fiber board prepreg special for the planetary wheel is generally 120-140 s. The fluidity of the glass fiber board prepreg special for the wandering star wheel is generally 17-23%. The volatile matter of the glass fiber plate prepreg special for the wandering star wheel is less than 0.5 percent, such as 0.4 percent.
The invention also provides a preparation method of the glass fiber plate special for the wandering star wheel, which comprises the following steps:
(1) laminating: stacking and matching a plurality of prepregs to obtain a plate;
(2) and carrying out hot pressing on the plate to obtain the glass fiber plate special for the wandering star wheel.
In the present invention, no pressure is required for lamination as is common in the art, and the lamination requirement follows four principles: the glue content is high or low, the cloth type is consistent, the structure is symmetrical, and the left and right matching principles are adopted.
In the step (2), the method and conditions for the hot press pressing may be those conventional in the art. According to the common knowledge in the field, before the plate is subjected to hot pressing, atomizing films are generally arranged on two sides of the plate so as to avoid mutual pollution between the plate and hot pressing equipment during hot pressing; meanwhile, before hot pressing, after the steel plate and the kraft paper are sequentially arranged on the atomization film, hot pressing is carried out. After the hot press, the atomization film, the kraft paper, and the steel plate were removed in this order. The number of the kraft paper is generally 16 to 18.
The pressure of the hot pressing is preferably 20 to 32kg/cm2(ii) a More preferably 26 to 30kg/cm2。
The temperature of the hot pressing is preferably 140-200 ℃; more preferably 150 to 190 ℃.
The time for hot pressing is preferably 135-145 min.
In the invention, the preparation method of the glass fiber board special for the wandering star wheel generally also carries out subsequent shape processing and inspection procedures so as to ensure the quality of products.
The invention also provides the glass fiber board special for the wandering star wheel, which is prepared by the preparation method of the glass fiber board special for the wandering star wheel.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The reagents and starting materials used in the present invention are commercially available. The positive progress effects of the invention are as follows:
1. the glue solution, the prepreg and the glass fiber board are all used in the preparation methods of the glue solution, the prepreg and the glass fiber board, and the preparation methods of the glue solution, the prepreg and the glass fiber board are simple in process, low in cost, stable in technology, low in reject ratio, strong in process controllability and suitable for mass production.
2. The glass fiber board special for the wandering star wheel meets the requirement of a production process of the wandering star wheel, has good comprehensive performance, particularly has better wear resistance, toughness, mechanical strength and thickness uniformity, for example, the bending strength reaches 413MP in the radial direction, is improved by 378MP compared with a common glass fiber board, reaches 346MP in the weft direction, and is improved by 9MP compared with a common glass fiber board; t-288 is more than 60min, which is 60 times higher than that of common FR-4 glass fiber plate. The glass fiber board of the invention has no delamination and no bubbling in the thermal stress test.
Drawings
Fig. 1 is a photograph of a sample of the drop weight impact test of effect example 1.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
Example 1
The preparation method of the special glass fiber board glue solution for the wandering star wheel comprises the following steps:
resin: 600 parts of flame-retardant modified liquid halogen-free epoxy resin and 450 parts of flame-retardant modified solid halogen-free epoxy resin; the flame-retardant modified epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 8.3-9.4(Eq/kg), viscosity 27 ℃ (mPas): 2000-; the flame-retardant modified solid epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 970-1070(g/eg), viscosity 150 ℃ (mPas): 8000-11000.
Curing agent: 40 parts of Dicyandiamide (DICY);
curing accelerator: 0.35 part of 2-phenylimidazole (substituted by C-2);
solvent: 400 parts of Dimethylformamide (DMF), 300 parts of acetone and 100 parts of butanone;
inorganic filler: 50 parts of silicon dioxide and 80 parts of talcum powder.
The preparation method comprises the following steps:
(1) mixing a curing agent, an accelerator and a solvent, and stirring at the rotating speed of 1000rpm for 4 hours until the curing agent, the accelerator and the solvent are dissolved to obtain a mixture A;
(2) mixing the mixture A with the flame-retardant modified liquid halogen-free epoxy resin and the flame-retardant modified solid halogen-free epoxy resin, and stirring at the rotating speed of 1200rpm for 6 hours until the mixture is uniformly stirred to obtain a mixture B;
(3) and under the condition of continuous stirring, mixing the mixture B with silicon dioxide and talcum powder, shearing at a high speed of 2600rpm for 2 hours, stirring at a speed of 1200rpm for 8 hours, and curing to obtain the gel solution, wherein the gel time of the obtained gel solution is 230 s.
Secondly, preparing the glass fiber board special for the wandering star wheel:
the preparation method comprises the following steps: gluing: coating the prepared glue solution for the glass fiber plate special for the wandering star wheel on 6 pieces of electronic grade glass fiber cloth 7628 by using a vertical gluing machine; the oven temperature of the gluing machine is 200 ℃, the gluing speed is 19m/min, and 6 prepregs are obtained; the resin content of the prepreg is 30 wt%, the gel time of the prepreg is 130s, the fluidity of the prepreg is 21%, and the volatile matter of the prepreg is 0.3%;
and (2) laminating: overlapping 6 prepregs, and covering atomizing films on two surfaces to obtain a semi-finished product;
thirdly, hot-pressing the semi-finished product at 190 ℃ under the pressure of 30kg/cm2And hot-pressing for 140 min.
The resulting glass fiber sheet was subjected to property measurement, and the results are shown in Table 1.
TABLE 1 Properties of the glass fiber sheet of example 1
Figure BDA0001098143140000061
Figure BDA0001098143140000071
As can be seen from Table 1, the glass fiber sheet obtained in example 1 has good combination properties.
Example 2
The preparation method of the special glass fiber board glue solution for the wandering star wheel comprises the following steps:
resin: 650 parts of flame-retardant modified liquid halogen-free epoxy resin and 400 parts of flame-retardant modified solid halogen-free epoxy resin; the flame-retardant modified epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 8.3-9.4(Eq/kg), viscosity 27 ℃ (mPas): 2000-; the flame-retardant modified solid epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 970-1070(g/eg), viscosity 150 ℃ (mPas): 8000-11000.
Curing agent: 45 parts of Dicyandiamide (DICY);
curing accelerator: 0.40 part of 2-phenylimidazole (substituted by C-2);
solvent: 450 parts of Dimethylformamide (DMF), 350 parts of acetone and 50 parts of butanone;
inorganic filler: 60 parts of silicon dioxide and 70 parts of talcum powder.
The preparation method comprises the following steps:
(1) mixing a curing agent, an accelerator and a solvent, and stirring at the rotating speed of 1000rpm for 4 hours until the curing agent, the accelerator and the solvent are dissolved to obtain a mixture A;
(2) mixing the mixture A with the flame-retardant modified liquid halogen-free epoxy resin and the flame-retardant modified solid halogen-free epoxy resin, and stirring at the rotating speed of 1200rpm for 6 hours until the mixture is uniformly stirred to obtain a mixture B;
(3) and under the condition of continuous stirring, mixing the mixture B with silicon dioxide and talcum powder, shearing at a high speed of 2600rpm for 2 hours, stirring at a speed of 1200rpm for 8 hours, and curing to obtain the gel solution, wherein the gel time of the obtained gel solution is 245 s.
Secondly, preparing the glass fiber board special for the wandering star wheel:
the preparation method comprises the following steps: gluing: coating the prepared glue solution for the glass fiber plate special for the wandering star wheel on 6 pieces of electronic grade glass fiber cloth 7628 by using a vertical gluing machine; the oven temperature of the gluing machine is 200 ℃, the gluing speed is 19m/min, and 6 prepregs are obtained; the resin content of the prepreg is 31 wt%, the gel time of the prepreg is 120s, the fluidity of the prepreg is 22%, and the volatile matter of the prepreg is 0.3%;
and (2) laminating: overlapping 6 prepregs, and covering atomizing films on two surfaces to obtain a semi-finished product;
thirdly, hot-pressing the semi-finished product at 190 ℃ under the pressure of 30kg/cm2And carrying out hot pressing for 145min to obtain the product.
The resulting glass fiber sheet was subjected to property measurement, and the results are shown in Table 2.
Table 2 performance parameters of the glass fiber sheet of example 2
Figure BDA0001098143140000081
Figure BDA0001098143140000091
As can be seen from Table 2, the glass fiber sheet obtained in example 2 has good combination properties.
Example 3
The preparation method of the special glass fiber board glue solution for the wandering star wheel comprises the following steps:
resin: 600 parts of flame-retardant modified liquid halogen-free epoxy resin and 500 parts of flame-retardant modified solid halogen-free epoxy resin; the flame-retardant modified epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 8.3-9.4(Eq/kg), viscosity 27 ℃ (mPas): 2000-; the flame-retardant modified solid epoxy resin is DOPO type halogen-free flame-retardant epoxy resin, and the product name is as follows: DOPO type, epoxy value: 970-1070(g/eg), viscosity 150 ℃ (mPas): 8000-11000.
Curing agent: 50 parts of Dicyandiamide (DICY);
curing accelerator: 0.45 part of 2-phenylimidazole (C-2 substituted);
solvent: 300 parts of Dimethylformamide (DMF), 400 parts of acetone and 100 parts of butanone;
inorganic filler: 45 parts of silicon dioxide and 75 parts of talcum powder.
The preparation method comprises the following steps:
(1) mixing a curing agent, an accelerator and a solvent, and stirring at the rotating speed of 1000rpm for 4 hours until the curing agent, the accelerator and the solvent are dissolved to obtain a mixture A;
(2) mixing the mixture A with the flame-retardant modified liquid halogen-free epoxy resin and the flame-retardant modified solid halogen-free epoxy resin, and stirring at the rotating speed of 1200rpm for 6 hours until the mixture is uniformly stirred to obtain a mixture B;
(3) and under the condition of continuous stirring, mixing the mixture B with silicon dioxide and talcum powder, shearing at a high speed of 2600rpm for 2 hours, stirring at a speed of 1200rpm for 8 hours, and curing to obtain the gel solution, wherein the gel time of the obtained gel solution is 260 s.
Secondly, preparing the glass fiber board special for the wandering star wheel:
the preparation method comprises the following steps: gluing: coating the prepared glue solution for the glass fiber plate special for the wandering star wheel on 6 pieces of electronic grade glass fiber cloth 7628 by using a vertical gluing machine; the oven temperature of the gluing machine is 200 ℃, the gluing speed is 19m/min, and 6 prepregs are obtained; the resin content of the prepreg is 32 wt%, the gel time of the prepreg is 140s, the fluidity of the prepreg is 22%, and the volatile matter of the prepreg is 0.3%;
and (2) laminating: overlapping 6 prepregs, and covering atomizing films on two surfaces to obtain a semi-finished product;
thirdly, hot-pressing the semi-finished product at 190 ℃ under the pressure of 30kg/cm2And hot-pressing for 140 min.
The resulting glass fiber sheet was subjected to property measurement, and the results are shown in Table 3.
Table 3 performance parameters of the glass fiber sheet of example 3
Figure BDA0001098143140000101
Effect example 1
Drop hammer impact test (toughness test)
An experimental instrument: ISO Impact Tester, model BYK Gardner, model 5512;
experimental samples: the thickness of the substrate is 1.5 mm-1.6 mm, and the structure of the substrate is 7628 multiplied by 8 ply;
the experimental process comprises the following steps: and (3) installing the etched sample according to the requirement of an instrument, fixing the drop hammer at the position with the height of 20mm, enabling the drop hammer to freely fall to impact the material, and indicating that the toughness and the Punch effect of the material are better if the cross crack generated by the impact of the drop hammer on the material is clearer. As can be seen from FIG. 1, the toughness of the glass fiber board (on the left side of FIG. 1) prepared in example 1 of the present invention is significantly better than that of the similar common FR-4 glass fiber board material (on the right side of FIG. 1) on the market.

Claims (8)

1. A planetary wheel is characterized by being prepared by the following preparation method:
(1) laminating: stacking a plurality of prepregs to obtain a plate;
(2) carrying out hot pressing on the plate to obtain the composite material;
wherein the prepreg is prepared by the following preparation method: coating a glass fiber board glue solution special for a wandering star wheel on electronic-grade glass fiber cloth, and then drying to obtain the glass fiber board glue solution; the glass fiber board glue solution special for the wandering star wheel is prepared from the following raw materials in parts by weight:
formula 1: 600 parts of flame-retardant modified liquid halogen-free epoxy resin, 450 parts of flame-retardant modified solid halogen-free epoxy resin, 40 parts of dicyandiamide, 0.35 part of C-2 substituted 2-phenylimidazole, 400 parts of dimethylformamide, 300 parts of acetone, 100 parts of butanone, 50 parts of silicon dioxide and 80 parts of talcum powder;
alternatively, formulation 2: 650 parts of flame-retardant modified liquid halogen-free epoxy resin, 400 parts of flame-retardant modified solid halogen-free epoxy resin, 45 parts of dicyandiamide, 0.40 part of C-2 substituted 2-phenylimidazole, 450 parts of dimethylformamide, 350 parts of acetone, 50 parts of butanone, 60 parts of silicon dioxide and 70 parts of talcum powder;
alternatively, formulation 3: 600 parts of flame-retardant modified liquid halogen-free epoxy resin, 500 parts of flame-retardant modified solid halogen-free epoxy resin, 50 parts of dicyandiamide, 0.45 part of C-2 substituted 2-phenylimidazole, 300 parts of dimethylformamide, 400 parts of acetone, 100 parts of butanone, 45 parts of silicon dioxide and 75 parts of talcum powder;
wherein the flame-retardant modified liquid halogen-free epoxy resin is DOPO type liquid halogen-free flame-retardant epoxy resin, and the epoxy value is as follows: 8.3-9.4Eq/kg, viscosity 27 ℃: 2000-5000 mPa.s; the flame-retardant modified solid halogen-free epoxy resin is DOPO type solid halogen-free flame-retardant epoxy resin, and the epoxy equivalent is as follows: 970-1070g/eq, viscosity 150 ℃: 8000-11000 mPas.
2. The planetary wheel according to claim 1, wherein the glass fiber plate glue solution special for the planetary wheel is prepared by the following preparation method:
(1) mixing dicyandiamide according to claim 1, C-2 substituted 2-phenylimidazole, the dimethylformamide, the acetone and the butanone, and stirring until the mixture is dissolved to obtain a mixture a;
(2) mixing the mixture A with the resin, and uniformly stirring to obtain a mixture B;
(3) and mixing the mixture B, the silicon dioxide and the talcum powder under the stirring condition, shearing at the speed of 2200-2800 rpm, and curing to obtain the silicon dioxide-talcum powder.
3. The planetary gear according to claim 2, wherein in the step (1), the rotation speed of the stirring is 800-1500 rpm;
and/or in the step (1), the stirring time is 3-6 hours;
and/or in the step (2), the rotating speed of the stirring is 1000-1500 rpm;
and/or in the step (2), the stirring time is 3-6 hours;
and/or in the step (3), the shearing time is 1.0-2.0 hours;
and/or in the step (3), the shearing rotating speed is 2500-2800 rpm;
and/or in the step (3), the curing is carried out by stirring at the rotating speed of 1200-1600 rpm for 8-12 hours.
4. The planetary of claim 1, wherein said electronic grade glass cloth is electronic grade fiberglass cloth 7628;
and/or the equipment used for coating is a vertical gluing machine;
and/or the coating speed is 16-23 m/min;
and/or the drying temperature is 180-205 ℃.
5. The planetary gear according to claim 4, wherein the coating speed is 18-20 m/min;
and/or the drying temperature is 190-200 ℃.
6. The planetary gear according to claim 1, wherein the resin content of the glass fiber board prepreg specially used for the planetary gear is 30-35 wt%; the gel time of the glass fiber board prepreg special for the wandering star wheel is 120-140 s; the fluidity of the glass fiber board prepreg special for the wandering star wheel is 17-23%; the volatile matter of the glass fiber board prepreg special for the wandering star wheel is below 0.5%.
7. The planetary gear according to claim 1, wherein in the step (2), the pressure of the hot pressing is 20 to 32kg/cm2；
And/or the temperature of the hot pressing is 140-200 ℃;
and/or the time of hot pressing is 135-145 min.
8. The planetary gear according to claim 7, wherein in the step (2), the pressure of the hot pressing is 26 to 30kg/cm2；
And/or the temperature of the hot pressing is 150-190 ℃.
CN201610757177.5A 2016-08-29 2016-08-29 Wandering star wheel Active CN106366850B (en)

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