CN113524811A - Production process of cushion pad - Google Patents
Production process of cushion pad Download PDFInfo
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- CN113524811A CN113524811A CN202110878575.3A CN202110878575A CN113524811A CN 113524811 A CN113524811 A CN 113524811A CN 202110878575 A CN202110878575 A CN 202110878575A CN 113524811 A CN113524811 A CN 113524811A
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- 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
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- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- 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
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
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- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/048—Natural or synthetic rubber
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- 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
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- 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
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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Abstract
The invention discloses a production process of a cushion pad, which comprises an upper surface layer, a middle alternating layer and a lower surface layer; the upper surface layer and the lower surface layer are obtained by carrying out surface treatment on glass fiber cloth or basalt fiber cloth through polyester silicone resin; the intermediate alternating layer is formed by alternately arranging a plurality of glass fiber cloth layers and basalt fiber cloth layers, and the glass fiber cloth in the glass fiber cloth layers and the basalt fiberThe basalt fiber cloth in the cloth layer is dipped with the fluororubber coating; the upper surface layer, the middle alternating layer and the lower surface layer have the unit area pressure of 5-50kg/cm at the temperature of 150-210 DEG C2And keeping the temperature and pressure for 10-50 minutes, pressing, curing and forming to obtain a crude cushion pad, cutting redundant edges, and performing edge sealing treatment on the edges by using rubber or resin to obtain a finished cushion pad. The buffer pad obtained by the invention has good high-temperature resilience, higher strength and buffer performance, higher production safety, harmless production and use processes of the buffer board, lower cost, simple production process and easy control.
Description
Technical Field
The invention relates to the technical field of cushion materials for hot pressing, in particular to a production process of a cushion pad.
Background
In the process of manufacturing a laminate such as a printed circuit board, in the step of press forming and thermocompression bonding, a laminate material to be pressed is sandwiched between hot plates serving as a heating and pressing mechanism, and a certain pressure and heat are applied. In order to obtain a molded article with high accuracy, it is necessary to perform hot pressing by interposing a flat plate-like cushioning material between a hot plate and a laminate material in order to uniformize the heat and pressure applied to the laminate material over the entire surface in the hot pressing.
Conventionally, a paper material in which about 3 to 20 pieces of kraft paper or linter paper are laminated is often used as a hot press cushioning material. A paper-made cushioning material is inexpensive, and has well-balanced physical properties in terms of cushioning properties, in-plane uniformity, and heat transfer properties. However, the paper-made cushioning material has a disadvantage that it cannot be repeatedly used in a plurality of presses because it has no restoring force of voids after pressing and further constituent fibers are thermally deteriorated.
The invention application with the application number of 201910296818.5 discloses a high-temperature-resistant hot-pressing buffer material, which comprises glass fiber cloth, Teflon cloth and knitted non-woven fabric, wherein the lower surface of the glass fiber cloth is overlapped with the upper surface of the Teflon cloth, the upper surface of the glass fiber cloth is overlapped with the knitted non-woven fabric, and the lower surface of the Teflon cloth is overlapped with the knitted non-woven fabric and is subjected to hot-pressing forming to form the high-temperature-resistant hot-pressing buffer material. In the technology, the non-woven fabric has poor rebound resilience, is hardly rebounded after being used for many times, and has short service life. Application number 201922089538.5 discloses in utility model a multilayer hot pressing blotter, including the strengthening layer, 2 mix and compile layer and 2 top layers, mix and compile the layer and mix by wire and elasticity polymer synthetic fiber and weave and form, mix and compile layer rigid coupling in the upper surface and the lower surface of strengthening layer, the top layer adopts the rubber foaming material preparation that contains the adhesive to form, the top layer rigid coupling is in the upper surface of upper mixed layer and the lower surface of lower floor mixed layer, the wire in the mixed layer is the copper wire, elasticity polymer synthetic fiber is formed by polyester fiber and spandex fiber mixture, the diameter of the wire in the mixed layer is 0.01-0.15mm, the weight ratio of the wire of mixed layer and elasticity polymer synthetic fiber is 6: 4. The technology uses terylene and spandex, so that the polyester and spandex can not be used at the high temperature of 200 ℃ for a long time, and the polyester and spandex are temperature difference resistant. Utility model No. 201520222802.7 discloses a blotter for hot pressing, contains a non-woven fabric unit and two surface courses, and this blotter for hot pressing includes: the non-woven fabric unit is provided with at least one non-woven fabric layer, and the non-woven fabric layer is provided with a first surface and a second surface opposite to the first surface; the surface layer is made of silicon rubber mixed with an adhesive bonding agent, and the adhesive bonding agent is directly fixed on the first surface and the second surface of the non-woven fabric unit respectively. This technique has similar disadvantages to those of the high-temperature and hot-press resistant cushioning material disclosed in the invention application No. 201910296818.5, and although the high-temperature resistance is improved by using silicone rubber, the rebound resilience is deteriorated even after long-term use. The invention application with the application number of 202010427310.7 discloses a buffer pad for a copper-clad plate laminating process, which comprises aluminum foils, silicon rubber layers and prepreg layers, wherein the silicon rubber layers are positioned between two layers of the aluminum foils and are provided with a plurality of layers, two adjacent layers of the silicon rubber layers are connected through the prepreg layers, the silicon rubber layers contain chopped fibers or ceramic fillers, and the ceramic fillers contain metal oxides. The chopped fiber is one or more of glass fiber, carbon fiber, aromatic polyamide fiber and ceramic fiber. The chopped fibers have a silane coating on the surface. The silicone rubber layer is provided with 3 layers, and the prepreg layer is provided with two layers. And (3) laminating the aluminum foil, the silicon rubber layer and the prepreg layer according to a set sequence, and then molding by a heating and pressurizing process by using a hot press. The technology uses the rubber material, so that the rebound resilience is greatly improved, but the rebound resilience of the silicon rubber material at a high temperature of more than 200 ℃ for a long time is greatly reduced, the production process is complex, and the cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a production process of a cushion pad.
The technical scheme adopted by the invention for solving the technical problem is as follows: a process for producing a cushioning pad comprising an upper surface layer, a middle layer and a lower surfaceA layer; the upper surface layer and the lower surface layer are obtained by performing surface treatment on glass fiber cloth or basalt fiber cloth through polyester silicone resin; the middle alternate layer is formed by alternately arranging a plurality of glass fiber cloth layers and basalt fiber cloth layers or arranging basalt fiber cloth layers, and both the glass fiber cloth in the glass fiber cloth layers and the basalt fiber cloth in the basalt fiber cloth layers are dipped with fluorine rubber coatings; the upper surface layer, the middle layer and the lower surface layer have the unit area pressure of 5-50kg/cm at the temperature of 150-210 DEG C2And keeping the temperature and pressure for 10-50 minutes, pressing, curing and forming to obtain a crude cushion pad, cutting redundant edges, and performing edge sealing treatment on the edges by using rubber or resin to obtain a finished cushion pad.
Furthermore, the upper surface layer and the lower surface layer are glass fiber cloth or basalt fiber cloth, are impregnated with polyester silicone resin or are coated on one side, and the coating thickness is 10-50g/m2Removing the solvent at a temperature lower than 180 ℃; the thickness of the glass fiber cloth is 0.1-0.4 mm; the thickness of the basalt fiber cloth is 0.15-0.5 mm.
Further, in the single-side coating, the polyester silicone resin is coated on one side of the upper surface layer or the lower surface layer which is not connected with the intermediate alternating layer.
Further, the intermediate alternating layer is a single basalt fiber cloth layer, and the thickness of each basalt fiber cloth layer is equal or unequal.
Further, in the intermediate alternating layers, the specific process of impregnating the glass fiber cloth layer with the fluororubber is as follows: dissolving the fluororubber into 20-40% solid solution by using ester or ketone solvent, uniformly impregnating or coating the solution on two sides of the glass fiber cloth, wherein the thickness of the impregnated or coated solution is 100-400g/m2Removing the solvent by 120-180 ℃ x1-10 min; the thickness of the glass fiber cloth is 0.1-1.5 mm.
Further, in the intermediate alternating layer, the specific process of impregnating the basalt fiber cloth layer with the fluororubber is as follows: dissolving fluororubber into 10-30% solid solution with ester or ketone solvent, and uniformly soaking or coating on two sides of basalt fiber cloth with a thickness of 100-2Passing through 120-180 ℃ x1-20min removing the solvent; the thickness of the basalt fiber cloth is 0.1-1.2 mm.
Further, the preparation method of the polyester silicone resin for surface treatment of the upper surface layer and the lower surface layer comprises the following steps: dihydric alcohol, dibasic acid, trihydric alcohol and a small amount of monohydric alcohol or monobasic acid are subjected to condensation polymerization and dehydration at 190 +/-5 ℃, and then subjected to reflux and water-splitting reaction with methyl or phenyl silane containing two or more hydroxyl groups in dimethylbenzene or butyl acetate under the action of a high-efficiency catalyst to finally obtain a transparent stable polyester silicone resin solution, wherein the solid content is controlled to be 30-80%. The high-molecular-weight polyurethane resin contains medium and low molecular weight and high hydroxyl value, is further crosslinked to form a net structure, has excellent solvent resistance, can resist high temperature of about 320 ℃, and has excellent adhesive force with glass fiber cloth or basalt fiber cloth. The surface layer is well protected and the yarns are stabilized, and the adhesion of materials adjacent to the buffer pad at high temperature is prevented.
The invention has the beneficial effects that: compared with the prior art, the cushion pad provided by the invention has good high-temperature resilience up to 250 ℃ due to the adoption of the fluororubber material, the glass fiber cloth layer has high strength and can provide good supporting effect of a cushion framework, the basalt fiber cloth layer has good flexibility and still has good cushion performance after being repeatedly used at the temperature of 250 ℃ for a long time, and the basalt fiber cloth fiber is flexible and is not easy to break and puncture skin, so that itching and allergy caused by contact with the glass fiber cloth in the using process can be avoided, the production safety is higher, the production and using processes of the cushion board are harmless, the cost is lower, the production process is simple, and the control is easy.
Drawings
Fig. 1 is a schematic view of the structure of the cushion pad provided in example 1.
Wherein, 1-upper surface layer; 2-intermediate alternating layers; and 3-lower surface layer.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
The fluororubber compound adopts the following process: adopting fluororubber coating grade mixed rubber SFAT-H2701 of Qianfu science and technology Limited in Jiangsu, slowly stirring for 3H at the temperature of not higher than 80 ℃ by using ethyl acetate solvent, and dissolving into fluororubber solution with the solid content of 25 percent.
The preparation method comprises the steps of carrying out polycondensation dehydration on hexanediol, adipic acid, glycerol, pentaerythritol and phthalic anhydride according to a certain ratio at 190 ℃ for 1 hour in the presence of a phosphoric acid catalyst to prepare a polyester oligomer, carrying out reflux water-splitting reaction on the polyester oligomer and dihydroxydimethylsilane and dihydroxydiphenylsilane in xylene or butyl acetate under the action of a high-efficiency catalyst to finally obtain a transparent stable polyester silicone resin solution, wherein the solid content is controlled to be 30-80%.
A glass fiber cloth with the thickness of 1.0mm is adopted to be impregnated with the fluorine rubber coating. Uniformly dipping the glass fiber cloth on two sides, wherein the dip coating amount is 350g/m2The solvent was stripped off by 160 ℃ for 8 min.
Adopting 0.4mm basalt fiber cloth, dipping with fluororubber solution, wherein the dipping thickness is 350g/m2Desolventizing with less than 150 ℃ for 8 min.
One side of glass fiber cloth with the thickness of 0.15mm is coated with polyester silicone resin solution, and the coating thickness is 40g/m2The solvent is removed at a temperature below 180 ℃.
Glass fiber cloth coated with polyester silicone resin is used as an upper surface layer 1 and a lower surface layer 3, and glass fiber cloth coated with fluororubber and basalt fiber cloth are alternately placed in the middle to be used as an intermediate alternate layer 2. The number of intermediate alternating layers 2 is 4. The upper surface layer 1, the middle alternating layers 2 and the lower surface layer 3 have a unit area pressure of 5-50kg/cm at a temperature of 150-210 DEG C2Keeping the temperature and the pressure for 10 to 50 minutes; and pressing, curing and forming to obtain a cushion crude product with the thickness of 6mm, cutting redundant edges, and performing edge sealing treatment on the edges by using rubber or resin to obtain a cushion finished product.
Example 2
The dip coating amount of the glass cloth in the intermediate alternating layers in example 1 was changed to 300g/m2The rest are the same.
Example 3
The middle alternate layer in the embodiment 1 is changed into a single basalt fiber cloth layer, the thickness of each basalt fiber cloth layer is 0.9mm, and the number of the layers is 6; the thickness of the glass fiber cloth layers of the upper and lower surface layers is changed from 0.15mm to 0.3mm, and the rest are the same.
Example 4
The intermediate alternating layer in the embodiment 1 is changed into a basalt fiber cloth layer, and the basalt fiber cloth layer is formed by alternately or randomly arranging two kinds of basalt fiber cloth layers with the thicknesses of 0.6mm and 0.8mm respectively, wherein the number of the layers with the two kinds of thicknesses is 3, and the rest layers are the same.
Example 5
The upper and lower surface layers in example 1 were replaced with basalt fiber cloth layers coated with a polyester silicone resin solution on one side, and the coating thickness was 40g/m2And the thickness of the basalt fiber cloth layer is 0.3 mm. The rest is the same.
Example 6
In example 1, the coating thickness of the glass fiber cloth in the upper and lower surface layers was changed to 26 g/m2. The rest is the same as in example 1.
The results of the performance test of the cushions obtained in examples 1-6 above are shown in the following table:
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| High temperature resilience | 1209 | 1105 | 1213 | 1218 | 1201 | 1190 |
| Degree of flexibility | 115 | 122 | 113 | 109 | 110 | 114 |
| Initial buffer N | 5450 | 5300 | 5800 | 5400 | 4950 | 5410 |
| Post-buffer N after 1000 applications | 4500 | 4450 | 5250 | 5380 | 5760 | 4510 |
| No adsorption of | 1509 | 1500 | 1503 | 1513 | 1528 | 1306 |
The test method comprises the following steps: the high-temperature resilience simulates the actual use condition and is 35kg/cm2Uniformly heating to 210 ℃ from normal temperature within 90min under pressure, preserving heat for 30 min, naturally cooling to below 60 ℃, releasing pressure for 30 min, testing the height difference before and after use, and repeating the cycle until the cycle time that the height difference just exceeds 0.6mm is used as the index of high-temperature resilience. A bending experiment is carried out on a bracket with an included angle of 30 degrees by taking a strip of 50x200mm, and the angle degree of cracking or crackle is used as a flexibility index and has the unit of. The buffering experiment adopts the superposition of two layers of rings with the inner diameter of 16mm and the outer diameter of 50mm, and the unit of the force is cattle, wherein the compression deformation is 15 percent. The nonadsorption mainly refers to the characteristic that the buffer board is nonadsorpted with the steel plate after being recycled for many times at the high temperature of 220 ℃. Here, the number of times of recycling that the resin composition just failed to fall off was used as an index of non-adsorption property, and the more the number of times, the better the non-adsorption property.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (7)
1. The production process of the cushion pad is characterized in that: the cushion pad comprises an upper surface layer, intermediate alternating layers and a lower surface layer; the upper surface layer and the lower surface layer are obtained by performing surface treatment on glass fiber cloth or basalt fiber cloth through polyester silicone resin; the middle alternating layer is formed by alternately arranging a plurality of glass fiber cloth layers and basalt fiber cloth layers, and the glass fiber cloth in the glass fiber cloth layers and the basalt fiber cloth in the basalt fiber cloth layers are soaked in waterDipping a fluorine rubber coating; the upper surface layer, the middle alternating layer and the lower surface layer have the unit area pressure of 5-50kg/cm at the temperature of 150-210 DEG C2And keeping the temperature and pressure for 10-50 minutes, pressing, curing and forming to obtain a crude cushion pad, cutting redundant edges, and performing edge sealing treatment on the edges by using rubber or resin to obtain a finished cushion pad.
2. The process for producing a cushioning pad according to claim 1, wherein: in the upper surface layer and the lower surface layer, glass fiber cloth or basalt fiber cloth is impregnated with polyester silicone resin or coated on one side, and the coating thickness is 5-150g/m2Removing the solvent at a temperature below 180 ℃; the thickness of the glass fiber cloth is 0.1-0.4 mm; the thickness of the basalt fiber cloth is 0.15-0.5 mm.
3. A process for the production of a cushioning pad according to claim 2, wherein: and when the single surface is coated, the silicone resin is coated on the surface which is not connected with the intermediate alternating layer in the upper surface layer or the lower surface layer.
4. The process for producing a cushioning pad according to claim 1, wherein: the middle alternating layer is a single basalt fiber cloth layer, and the thickness of each basalt fiber cloth layer is equal or unequal.
5. The process for producing a cushioning pad according to claim 1, wherein: in the intermediate alternate layer, the specific process of impregnating the glass fiber cloth layer with the fluororubber is as follows: dissolving the fluororubber into 20-40% solid solution by using ester or ketone solvent, uniformly impregnating or coating the solution on two sides of the glass fiber cloth, wherein the thickness of the impregnated or coated solution is 100-400g/m2Removing the solvent by 120-180 ℃ x1-20 min; the thickness of the glass fiber cloth is 0.1-1.5 mm.
6. A process for the production of a cushioning pad as claimed in claim 1 or 4, wherein: in the intermediate alternate layer, the basalt fiber cloth layer is soakedThe specific process of impregnating fluorine rubber comprises the following steps: dissolving fluororubber into 10-30% solid solution with ester or ketone solvent, and uniformly soaking or coating on two sides of basalt fiber cloth with a thickness of 100-2Removing the solvent by 120-180 ℃ x1-20 min; the thickness of the basalt fiber cloth is 0.1-0.8 mm.
7. The process for producing a cushioning pad according to claim 1, wherein: the preparation method of the polyester silicone resin for performing surface treatment on the upper surface layer and the lower surface layer comprises the following steps: dihydric alcohol, dibasic acid, trihydric alcohol and a small amount of monohydric alcohol or monobasic acid are subjected to condensation polymerization and dehydration at 190 +/-5 ℃, and then subjected to reflux and water-splitting reaction with methyl or phenyl silane containing two or more hydroxyl groups in dimethylbenzene or butyl acetate under the action of a high-efficiency catalyst to finally obtain a transparent stable polyester silicone resin solution, wherein the solid content is controlled to be 30-80%.
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| CN202110878575.3A CN113524811B (en) | 2021-08-02 | 2021-08-02 | Production process of buffer cushion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855456A (en) * | 2022-06-08 | 2022-08-05 | 德阳科吉高新材料有限责任公司 | Technological treatment method for coating thermoplastic elastomer on surface of basalt fiber cloth |
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| CN103501976A (en) * | 2011-06-07 | 2014-01-08 | 山内株式会社 | Surface layer material for cushioning material and cushioning material for hot-pressing |
| CN106132659A (en) * | 2014-06-30 | 2016-11-16 | 山内株式会社 | Cushioning material for heat press and manufacture method thereof |
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| JP2008132656A (en) * | 2006-11-28 | 2008-06-12 | Yamauchi Corp | Cushioning material for hot pressing and its manufacturing method |
| CN103501976A (en) * | 2011-06-07 | 2014-01-08 | 山内株式会社 | Surface layer material for cushioning material and cushioning material for hot-pressing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855456A (en) * | 2022-06-08 | 2022-08-05 | 德阳科吉高新材料有限责任公司 | Technological treatment method for coating thermoplastic elastomer on surface of basalt fiber cloth |
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| CN113524811B (en) | 2023-05-12 |
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