CN103978565A - Bulk molding compound (BMC) production method capable of improving performances of product - Google Patents
Bulk molding compound (BMC) production method capable of improving performances of product Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000004412 Bulk moulding compound Substances 0.000 title abstract description 78
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 15
- 239000003365 glass fiber Substances 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000012752 auxiliary agent Substances 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 13
- 238000004898 kneading Methods 0.000 claims description 11
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims 2
- 238000000465 moulding Methods 0.000 abstract description 10
- 238000009489 vacuum treatment Methods 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 239000011148 porous material Substances 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 description 4
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000275 quality assurance Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- -1 that is Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Reinforced Plastic Materials (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明公开了一种可提升产品性能的团状模塑料(BMC)生产方法，属于团状模塑料制备领域。本发明包括以下步骤：(1)混炼：将树脂、填料、助剂和玻璃纤维按一定配方比例加入捏合机中进行强力混合，获得松散团状模塑料；(2)称重包装：将步骤(1)中获得的松散团状模塑料按一定重量称重分装于不透气的薄膜包装袋或密闭容器中；(3)抽真空：对步骤(2)中包装后的松散团状模塑料进行抽真空处理；(4)压实：对步骤(3)中抽真空处理后的团状模塑料进行压实，形成密实团状模塑料，并在真空状态下进行密封。本发明消除了产品内的微孔和产品表面的气孔缺陷，提高了产品的性能，改善了产品的外观，减少了后期修补的工作量。
The invention discloses a bulk molding compound (BMC) production method capable of improving product performance, and belongs to the field of bulk molding compound preparation. The invention comprises the following steps: (1) mixing: adding resin, filler, auxiliary agent and glass fiber into a kneader according to a certain formula ratio for intensive mixing to obtain a loose lump molding compound; (2) weighing and packaging: combining the steps (1) The loose bulk molding compound obtained in (1) is weighed and packed in an airtight film packaging bag or an airtight container according to a certain weight; (3) Vacuumizing: the loose bulk molding compound packed in step (2) Carrying out vacuum treatment; (4) compacting: compacting the bulk molding compound after the vacuum treatment in step (3) to form a compact bulk molding compound, and sealing it in a vacuum state. The invention eliminates micropores in the product and pore defects on the surface of the product, improves the performance of the product, improves the appearance of the product, and reduces the workload of later repairs.
Description
技术领域technical field
本发明涉及一种团状模塑料生产工艺，更具体地说，涉及一种可提升产品性能的团状模塑料(BMC)生产方法。The invention relates to a production process of bulk molding compound, more specifically, relates to a production method of bulk molding compound (BMC) which can improve product performance.
背景技术Background technique
BMC是Bulk molding compounds的缩写，即团状模塑料。国内常称作不饱和聚酯团状模塑料，其主要是由GF(短切玻璃纤维)、UP(不饱和树脂)、MD(填料碳酸钙、氢氧化铝、高岭土等)以及各种添加剂经充分混合而成。传统BMC的配制一般分为两步：(1)先将树脂、引发剂、着色剂、脱模剂、部分填料等加入高剪切型的搅拌机中搅拌均匀；(2)把预混浆料和填充料加入Z型、∑型等铰刀式混料机或者行星式混合机中，加入短切玻璃纤维，搅拌一段时间后倒出团料，用挤出机挤成条状或直接成团状取出包装，储存备用。BMC生产完成后一般放入包装袋中，扎口包装，由于BMC为团状松散状态，其中间会有很多空气，在取料模压的过程中完全通过压机作用在模具以及BMC团料上挤压排除气泡，排除气泡的能力取决于压机的压力和模具结构，且不可能完全排除空气，在制品上形成微孔，甚至在制品上产生较大的气孔缺陷，对制品外观、性能产生很大影响。BMC is the abbreviation of Bulk molding compounds, that is, bulk molding compound. It is often called unsaturated polyester bulk molding compound in China, which is mainly composed of GF (chopped glass fiber), UP (unsaturated resin), MD (filler calcium carbonate, aluminum hydroxide, kaolin, etc.) and various additives. Mix well. The preparation of traditional BMC is generally divided into two steps: (1) First, add resin, initiator, colorant, release agent, and some fillers into a high-shear mixer and stir evenly; (2) Mix the premixed slurry and Filling materials are added to Z-type, Σ-type and other reamer mixers or planetary mixers, and chopped glass fibers are added. After stirring for a period of time, pour out the lumps and extrude them into strips or directly into lumps with an extruder. Remove from packaging and store for later use. After the BMC production is completed, it is usually put into a packaging bag and packed with a tie. Since the BMC is in a loose state, there will be a lot of air in the middle. During the process of taking out the material and molding it, it will be completely squeezed on the mold and the BMC group by the press. Press to remove air bubbles, the ability to remove air bubbles depends on the pressure of the press and the structure of the mold, and it is impossible to completely remove the air, forming micropores on the product, or even large pore defects on the product, which will have a great impact on the appearance and performance of the product. big impact.
中国专利申请号201310707589.4，申请公布日为2014年4月16日，发明创造名称为：一种脲醛模塑料的捏合方法，该申请案涉及了一种脲醛模塑料的捏合方法，将原料置于真空捏合机中进行捏合脱水，真空度为740～760mmHg，捏合时间为50～70min，采用真空捏合机，物料含水由平均30％下降至25％左右，含水量下降17％，并且物料的均匀性，疏松度优于传统捏合工艺，松软粒子的颗粒度直径下降2倍以上，为一道干燥创造了增加生产能力的基础；经真空脱水后的废水分别经过过滤器进行一级过滤和压滤器进行二级压滤处理，使经过二次处理的水溶液达澄清透明并反馈回甲醛生产厂，用于生产37％的甲醛溶液(成为原料)供生产使用，变废为宝。该申请案采用真空捏合机生产脲醛模塑料，其目的在于降低原料中的含水量，提高第一道干燥工艺的生产能力，并消除捏合工序游离甲醛对大气的污染，最终生产出粒子状脲醛模塑料，其并没有解决团状模塑料之间间隙含有很多空气，在模压过程中对制品外观和性能产生很大影响的问题。因此，在生产实践中，如何解决上述团状模塑料含有空气的问题一直困扰着本领域技术人员。Chinese patent application number 201310707589.4, the application publication date is April 16, 2014, the name of the invention is: a kneading method of urea-formaldehyde molding compound, the application involves a kneading method of urea-formaldehyde molding compound, the raw materials are placed in a vacuum Kneading and dehydration is carried out in the kneader, the vacuum degree is 740-760mmHg, and the kneading time is 50-70min. Using a vacuum kneader, the water content of the material drops from an average of 30% to about 25%, and the water content drops by 17%. And the uniformity of the material, The porosity is better than that of the traditional kneading process, and the particle size diameter of the soft particles is reduced by more than 2 times, which creates a basis for increasing production capacity for one drying process; the waste water after vacuum dehydration is filtered through the filter for the first stage and the filter press for the second stage Pressure filtration treatment makes the secondary treated aqueous solution clear and transparent and feeds back to the formaldehyde production plant for the production of 37% formaldehyde solution (as raw material) for production use, turning waste into treasure. The application uses a vacuum kneader to produce urea-formaldehyde molding compounds, the purpose of which is to reduce the water content in the raw materials, improve the production capacity of the first drying process, and eliminate the pollution of free formaldehyde in the kneading process to the atmosphere, and finally produce granular urea-formaldehyde molds. Plastics, it does not solve the problem that there is a lot of air in the gaps between the bulk molding compounds, which has a great impact on the appearance and performance of the product during the molding process. Therefore, in production practice, how to solve the above-mentioned problem of air in the bulk molding compound has been puzzling those skilled in the art.
发明内容Contents of the invention
1.发明要解决的技术问题1. The technical problem to be solved by the invention
本发明的目的在于克服现有工艺生产的团状模塑料中间含有大量空气，影响其制品的外观和性能的不足，提供一种可提升产品性能的团状模塑料(BMC)生产方法，采用本发明的技术方案，生产出的团状模塑料中间几乎不含有空气，在压制产品过程中同样不会有空气进入，消除了产品内的微孔和产品表面的气孔缺陷，提高了产品的性能，改善了产品的外观，减少了后期修补的工作量。The purpose of the present invention is to overcome the deficiency that the bulk molding compound produced by the existing technology contains a large amount of air, which affects the appearance and performance of its products, and to provide a production method for bulk molding compound (BMC) that can improve product performance. The technical scheme of the invention hardly contains air in the middle of the produced bulk molding compound, and no air will enter in the process of pressing the product, which eliminates the micropores in the product and the pores on the surface of the product, and improves the performance of the product. The appearance of the product is improved, and the workload of post-fixing is reduced.
2.技术方案2. Technical solution
为达到上述目的，本发明提供的技术方案为：In order to achieve the above object, the technical scheme provided by the invention is:
本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，包括以下步骤：A kind of bulk molding compound (BMC) production method that can improve product performance of the present invention comprises the following steps:
(1)混炼：将树脂、填料、助剂和玻璃纤维按一定配方比例加入捏合机中进行强力混合，获得松散团状模塑料；(1) Mixing: Add resin, fillers, additives and glass fiber into the kneader according to a certain formula ratio for intensive mixing to obtain loose bulk molding compound;
(2)称重包装：将步骤(1)中获得的松散团状模塑料按一定重量称重分装于不透气的薄膜包装袋或密闭容器中；(2) Weighing and packaging: the loose bulk molding compound obtained in step (1) is weighed and subpackaged in airtight film packaging bags or airtight containers according to a certain weight;
(3)抽真空：对步骤(2)中包装后的松散团状模塑料进行抽真空处理；(3) vacuuming: vacuumize the loose bulk molding compound after packaging in step (2);
(4)压实：对步骤(3)中抽真空处理后的团状模塑料进行压实，形成密实团状模塑料，并在真空状态下进行密封。(4) Compacting: compacting the bulk molding compound after the vacuum treatment in step (3) to form a compact bulk molding compound, and sealing it in a vacuum state.
更进一步地，步骤(1)中的混炼具体为：Further, the mixing in step (1) is specifically:
(1.1)将树脂、填料和助剂通过捏合机进行初混，初混时间为10～45min；(1.1) Initially mix the resin, fillers and additives through a kneader, and the initial mixing time is 10-45 minutes;
(1.2)初混结束后，向捏合机中加入短切玻璃纤维，强力混炼5～15min。(1.2) After the initial mixing, add chopped glass fiber into the kneader and knead vigorously for 5-15 minutes.
更进一步地，步骤(1)中所述的捏合机为真空捏合机，在捏合过程中进行真空处理，排除空气，真空度达到-0.08MPa～-0.1MPa。Furthermore, the kneader described in step (1) is a vacuum kneader, and vacuum treatment is carried out during the kneading process to exclude air, and the vacuum degree reaches -0.08MPa～-0.1MPa.
更进一步地，步骤(2)中所述的不透气的薄膜包装袋为尼龙袋或PP塑料袋。Furthermore, the airtight film packaging bag described in step (2) is a nylon bag or a PP plastic bag.
更进一步地，步骤(3)中抽真空后的松散团状模塑料的堆积密度从1.0～1.7g/cm3升高到1.4～2.1g/cm3，直接排除松散团状模塑料中的空气，真空度达到-0.08MPa～-0.1MPa。Furthermore, the bulk density of the loose bulk molding compound after vacuuming in step (3) increases from 1.0 to 1.7 g/cm 3 to 1.4 to 2.1 g/cm 3 , directly eliminating the air in the loose bulk molding compound , the vacuum degree reaches -0.08MPa～-0.1MPa.
3.有益效果3. Beneficial effect
采用本发明提供的技术方案，与已有的公知技术相比，具有如下显著效果：Compared with the existing known technology, the technical solution provided by the invention has the following remarkable effects:
(1)本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，对制得的松散团状模塑料分别进行抽真空和压实处理，从而得到密实的团状模塑料，其中间几乎不含有空气，在压制产品过程中同样不会有空气进入，消除了产品内的微孔和产品表面的气孔缺陷，提高了产品的性能，改善了产品的外观，减少了后期修补的工作量；(1) A method for producing bulk molding compound (BMC) that can improve product performance of the present invention, the loose bulk molding compound is vacuumized and compacted respectively to obtain a compact bulk molding compound, There is almost no air in the middle, and no air will enter during the process of pressing the product, which eliminates the micropores in the product and the pores on the surface of the product, improves the performance of the product, improves the appearance of the product, and reduces the cost of later repairs. workload;
(2)本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，其先将树脂、填料和助剂通过捏合机进行初混后，再向捏合机中加入短切玻璃纤维强力混炼，通过真空排气保证了树脂、填料和助剂充分粘合，同时增加了短切玻璃纤维与树脂基体的粘合力，提高团状模塑料制品的力学和外观性能；(2) A production method of bulk molding compound (BMC) that can improve product performance of the present invention, it first carries out initial mixing of resin, filler and additives through a kneader, and then adds chopped glass fiber to the kneader Strong kneading, through vacuum exhaust to ensure full adhesion of resin, fillers and additives, and at the same time increase the adhesion between chopped glass fiber and resin matrix, and improve the mechanical and appearance properties of bulk molding products;
(3)本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，其捏合机为真空捏合机，在捏合过程中进行真空处理，排除空气，真空度达到-0.08MPa～-0.1MPa，确保了团状模塑料微结构中不含有空气，使团料中的树脂更好地包裹填料和玻璃纤维，为后续制品生产提供质量保障；(3) A production method of bulk molding compound (BMC) that can improve product performance in the present invention, the kneader is a vacuum kneader, vacuum treatment is carried out during the kneading process, air is excluded, and the vacuum degree reaches -0.08MPa～- 0.1MPa, to ensure that the microstructure of the bulk molding compound does not contain air, so that the resin in the mass can better wrap the filler and glass fiber, and provide quality assurance for the subsequent production of products;
(4)本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，其不透气的薄膜包装袋为尼龙袋或PP塑料袋，成本低廉，且强度高，不易破损，确保了真空处理能够顺利完成。(4) A kind of bulk molding compound (BMC) production method that can improve product performance of the present invention, its airtight film packaging bag is nylon bag or PP plastic bag, and cost is low, and intensity is high, not easily damaged, has guaranteed Vacuum treatment can be successfully completed.
附图说明Description of drawings
图1为本发明的一种可提升产品性能的团状模塑料(BMC)生产方法流程图；Fig. 1 is a kind of flow chart of the production method of bulk molding compound (BMC) that can improve product performance of the present invention;
图2为本发明的一种可提升产品性能的团状模塑料(BMC)生产方法原理示意图。Fig. 2 is a schematic diagram of the production method of a bulk molding compound (BMC) that can improve product performance according to the present invention.
具体实施方式Detailed ways
为进一步了解本发明的内容，结合附图和实施例对本发明作详细描述。In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.
实施例1Example 1
结合图1和图2，本实施例的一种可提升产品性能的团状模塑料(BMC)生产方法，包括以下步骤：With reference to Fig. 1 and Fig. 2, a kind of bulk molding compound (BMC) production method of this embodiment can improve product performance, comprises the following steps:
(1)混炼：将树脂、填料、助剂和玻璃纤维按一定配方比例加入捏合机中进行强力混合，获得松散团状模塑料；具体地，取组份A：树脂70份、低收缩树脂30份、过氧化苯甲酸叔丁酯1.5份和硬脂酸锌4份，组份B：重质碳酸钙300份，组份C：6mm短切玻璃纤维75份；(1) Mixing: Add resin, fillers, additives and glass fiber into a kneader according to a certain formula ratio for intensive mixing to obtain a loose bulk molding compound; specifically, take component A: 70 parts of resin, low shrinkage resin 30 parts, 1.5 parts of tert-butyl peroxybenzoate and 4 parts of zinc stearate, component B: 300 parts of ground calcium carbonate, component C: 75 parts of 6mm chopped glass fiber;
(1.1)将组份A在高速搅拌器中充分混合5min，将混合好的组份A倒入含有组份B的捏合机中强力混合10min，该步骤为树脂、填料和助剂的初混；(1.1) Fully mix component A in a high-speed mixer for 5 minutes, pour the mixed component A into the kneader containing component B and mix vigorously for 10 minutes. This step is the initial mixing of resin, filler and additives;
(1.2)初混结束后，向捏合机中加入组份C，并抽真空到-0.08MPa～-0.1MPa，强力混炼5min，形成松散团状模塑料；(1.2) After the initial mixing, add component C to the kneader, vacuumize to -0.08MPa～-0.1MPa, and knead vigorously for 5min to form a loose lump molding compound;
上述的捏合机为真空捏合机，可在捏合过程中进行真空处理，排除空气，确保了团状模塑料微结构中不含有空气，使团料中的树脂更好地包裹填料和玻璃纤维，为后续制品生产提供质量保障；本步骤中先将树脂、填料和助剂通过捏合机进行初混后，再向捏合机中加入短切玻璃纤维强力混炼，通过真空排气保证了树脂、填料和助剂充分粘合，同时增加了短切玻璃纤维与树脂基体的粘合力，提高团状模塑料制品的力学和外观性能；The above-mentioned kneader is a vacuum kneader, which can carry out vacuum treatment during the kneading process to remove air, so as to ensure that the microstructure of the lump molding compound does not contain air, so that the resin in the lump can better wrap the filler and glass fiber, for Subsequent product production provides quality assurance; in this step, the resin, filler and additives are initially mixed through a kneader, and then chopped glass fibers are added to the kneader for strong mixing, and the resin, filler and additives are ensured by vacuum exhaust. The additive is fully bonded, and at the same time increases the adhesion between the chopped glass fiber and the resin matrix, and improves the mechanical and appearance properties of the bulk molding product;
(2)称重包装：将步骤(1)中获得的松散团状模塑料按一定重量称重分装于不透气的尼龙袋中，尼龙袋成本低廉，且强度高，不易破损，确保了真空处理能够顺利完成；(2) Weighing and packaging: the loose bulk molding compound obtained in step (1) is weighed and packed in an airtight nylon bag according to a certain weight. The nylon bag has low cost, high strength, and is not easy to be damaged, ensuring a vacuum processing can be successfully completed;
(3)抽真空：对步骤(2)中包装后的松散团状模塑料进行抽真空处理，抽真空后的松散团状模塑料的堆积密度从1.0～1.7g/cm3升高到1.4～2.1g/cm3，直接排除松散团状模塑料中的空气，真空度达到-0.08MPa～-0.1MPa；(3) Vacuuming: Vacuumize the loose bulk molding compound packaged in step (2), and the bulk density of the loose bulk molding compound after vacuuming increases from 1.0 to 1.7 g/ cm3 to 1.4 to 2.1g/cm 3 , directly remove the air in the loose bulk molding compound, and the vacuum degree can reach -0.08MPa～-0.1MPa;
(4)压实：对步骤(3)中抽真空处理后的团状模塑料进行压实，形成密实团状模塑料，并在真空状态下进行密封。(4) Compacting: compacting the bulk molding compound after the vacuum treatment in step (3) to form a compact bulk molding compound, and sealing it in a vacuum state.
本实施例的一种可提升产品性能的团状模塑料(BMC)生产方法，对制得的松散团状模塑料分别进行抽真空和压实处理，从而得到密实的团状模塑料，其中间几乎不含有空气，在压制产品过程中同样不会有空气进入，消除了产品内的微孔和产品表面的气孔缺陷，提高了产品的性能，改善了产品的外观，减少了后期修补的工作量。A production method of bulk molding compound (BMC) that can improve product performance in this embodiment is to vacuumize and compact the loose bulk molding compound to obtain dense bulk molding compound. There is almost no air, and no air will enter during the pressing process, which eliminates the micropores in the product and the pores on the surface of the product, improves the performance of the product, improves the appearance of the product, and reduces the workload of later repairs .
实施例2Example 2
本实施例的一种可提升产品性能的团状模塑料(BMC)生产方法基本同实施例1，不同之处在于：本实施例步骤(1.1)中将混合好的组份A倒入含有组份B的捏合机中强力混合25min；步骤(1.2)中向捏合机中加入组份C，并抽真空到-0.08MPa～-0.1MPa，强力混炼10min，形成松散团状模塑料；步骤(2)中将获得的松散团状模塑料按一定重量称重分装于不透气的PP塑料袋中，PP塑料袋成本低廉，且强度高，不易破损，确保了真空处理能够顺利完成。A production method of bulk molding compound (BMC) that can improve product performance in this embodiment is basically the same as in embodiment 1, the difference is that in the step (1.1) of this embodiment, the mixed component A is poured into the containing component Mix vigorously in the kneader of part B for 25min; add component C to the kneader in step (1.2), and vacuumize to -0.08MPa～-0.1MPa, and knead vigorously for 10min to form a loose dough molding compound; step ( 2) The obtained loose bulk molding compound is weighed according to a certain weight and packed in airtight PP plastic bags. The PP plastic bags are low in cost, high in strength and not easy to be damaged, which ensures that the vacuum treatment can be successfully completed.
实施例3Example 3
本实施例的一种可提升产品性能的团状模塑料(BMC)生产方法基本同实施例1，不同之处在于：本实施例步骤(1.1)中将混合好的组份A倒入含有组份B的捏合机中强力混合45min；步骤(1.2)中向捏合机中加入组份C，并抽真空到-0.08MPa～-0.1MPa，强力混炼15min，形成松散团状模塑料；步骤(2)中将获得的松散团状模塑料按一定重量称重分装于密闭容器中。A production method of bulk molding compound (BMC) that can improve product performance in this embodiment is basically the same as in embodiment 1, the difference is that in the step (1.1) of this embodiment, the mixed component A is poured into the containing component Mix vigorously in the kneader of part B for 45min; in step (1.2), add component C to the kneader, and vacuumize to -0.08MPa～-0.1MPa, and knead vigorously for 15min to form a loose dough molding compound; step ( In 2), the obtained loose bulk molding compound is weighed and packed in airtight containers according to a certain weight.
如图2所示，本发明的一种可提升产品性能的团状模塑料(BMC)生产方法，在团状模塑料(BMC)生产完成后，放入不透气的尼龙袋或PP塑料袋或密闭容器中，先通过抽真空排除其中的空气，并同时挤压BMC团料，使BMC团料形成密实团状物(类似于橡皮泥状)，由于BMC团料中含有树脂等粘结胶水，在压制使用时打开包装后，密实团状物也不会再有空气进入材料中。在制品压制过程中也不会有空气进入材料中，从而压制出的制品几乎没有微孔，表面也不会形成大的气孔缺陷，对制品性能有很大的提高，并极大改善了产品外观，减少了后期修补。As shown in Figure 2, a kind of Bulk Molding Compound (BMC) production method that can improve product performance of the present invention, after Bulk Molding Compound (BMC) is produced, put into airtight nylon bag or PP plastic bag or In the airtight container, first remove the air in it by vacuuming, and squeeze the BMC mass at the same time, so that the BMC mass forms a dense mass (similar to plasticine). Since the BMC mass contains resin and other bonding glue, After opening the package when pressing for use, the dense mass will no longer have air entering the material. During the pressing process of the product, no air will enter the material, so that the pressed product has almost no micropores, and no large pore defects will be formed on the surface, which greatly improves the performance of the product and greatly improves the appearance of the product. , reducing post-patching.
以上示意性地对本发明及其实施方式进行了描述，该描述没有限制性，附图中所示的也只是本发明的实施方式之一，实际的结构并不局限于此。所以，如果本领域的普通技术人员受其启示，在不脱离本发明创造宗旨的情况下，不经创造性地设计出与该技术方案相似的结构方式及实施例，均应属于本发明的保护范围。The present invention and its implementations have been schematically described above, and the description is not restrictive. What is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structure and an embodiment similar to the technical solution, it shall fall within the scope of protection of the present invention .
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| JP2001009831A (en) * | 1999-04-27 | 2001-01-16 | Mitsubishi Rayon Co Ltd | Method for producing acrylic BMC, method for producing molded article, and method for producing acrylic artificial marble |
| CN201626065U (en) * | 2010-04-22 | 2010-11-10 | 益阳橡胶塑料机械集团有限公司 | Vacuumizing device used in refining process of rubber |
| CN102977571A (en) * | 2012-11-12 | 2013-03-20 | 无锡创达电子有限公司 | Novel bulk molding compound and preparation method thereof |
| CN103722631A (en) * | 2013-12-20 | 2014-04-16 | 溧阳市乔森塑料有限公司 | Kneading method of urea molding compound |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001009831A (en) * | 1999-04-27 | 2001-01-16 | Mitsubishi Rayon Co Ltd | Method for producing acrylic BMC, method for producing molded article, and method for producing acrylic artificial marble |
| CN201626065U (en) * | 2010-04-22 | 2010-11-10 | 益阳橡胶塑料机械集团有限公司 | Vacuumizing device used in refining process of rubber |
| CN102977571A (en) * | 2012-11-12 | 2013-03-20 | 无锡创达电子有限公司 | Novel bulk molding compound and preparation method thereof |
| CN103722631A (en) * | 2013-12-20 | 2014-04-16 | 溧阳市乔森塑料有限公司 | Kneading method of urea molding compound |
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