技术领域technical field
本发明涉及一种实际生产聚乙烯绝缘料的混炼方法。它属于样品制备技术领域，适用于生产适用聚乙烯绝缘层性能优越的样品。The invention relates to a mixing method for actually producing polyethylene insulating materials. It belongs to the technical field of sample preparation and is suitable for producing samples with superior performance of suitable polyethylene insulating layers.
背景技术Background technique
随着国内经济的发展，聚乙烯电线电缆的生产已不再满足电力行业的需求。虽然聚乙烯凭借其出色的电绝缘性能、良好的耐化学性能、易于加工等性能而得到了电缆行业的高度青睐，并广泛的应用于电缆的绝缘和护套的包覆材料。但其熔点较低，不能工作在较高的环境温度下，所以它无法更好的应用于电缆行业中。并且聚乙烯的机械强度较低，这也限制了其广泛应用。无论从电力性能方面还是从力学性能方面，现有的生产技术不能生产出满足发展的电缆绝缘。With the development of the domestic economy, the production of polyethylene wires and cables can no longer meet the needs of the power industry. Although polyethylene is highly favored by the cable industry due to its excellent electrical insulation properties, good chemical resistance, and easy processing, it is widely used in cable insulation and sheathing. However, its melting point is low and it cannot work at a higher ambient temperature, so it cannot be better used in the cable industry. And polyethylene has low mechanical strength, which also limits its wide application. No matter in terms of electrical performance or mechanical properties, the existing production technology cannot produce cable insulation that satisfies the development.
紫外光交联聚乙烯新技术以其工业设备简单、投资少、易于操作、维护方便、对环境无污染、安全防护不苛刻、量产率高、运转成本低和紫外光交联过程中对聚乙烯本体的损伤小等优点，在其相关领域已经得到了广泛应用，现已经应用于和电缆的工业加工过程。虽然紫外交联聚乙烯绝缘得到很好地应用，但是生产这种绝缘的方法效率还是没有得到提高，所以需要一种新的方法提高生产效率，能更好的使这种新技术得到广泛的应用。The new technology of UV cross-linked polyethylene is characterized by its simple industrial equipment, low investment, easy operation, convenient maintenance, no pollution to the environment, uncritical safety protection, high mass production rate, low operating cost, and high efficiency in the UV cross-linking process. Due to the advantages of small damage to the vinyl body, it has been widely used in its related fields, and has now been used in the industrial processing of cables and cables. Although UV cross-linked polyethylene insulation has been well used, the efficiency of the method of producing this kind of insulation has not been improved, so a new method is needed to improve the production efficiency, so that this new technology can be widely used. .
发明内容SUMMARY OF THE INVENTION
针对上述问题，本发明公开了一种绝缘粒料混炼方法解决基料混合不均匀、力学性能、电学性能不优越等问题。In view of the above problems, the present invention discloses a method for mixing insulating granules to solve the problems of uneven mixing of base materials, inferior mechanical properties and electrical properties, and the like.
本发明是一种绝缘粒料混炼方法，其特征在于，包括以下步骤：a.按照比例配制一定量的混炼样品，即聚乙烯、交联剂和紫外线吸收剂；b.设定烘箱温度为200℃，放入已配好比例的样品(密封条件下)烘近4h。在这过程中，每隔半小时进行一次摇晃，然后静置12h；c.在用挤出机挤出之前加入一定抗氧剂，挤出机四段每段的温度设定为130℃，140℃，160℃，180℃。挤出片状混合料；d.使用平板硫化机把混合料压制成1mm厚的小片，然后进行紫外光辐射。最后用冲片机把实验样片裁成哑铃状。The present invention is a mixing method of insulating granules, which is characterized by comprising the following steps: a. preparing a certain amount of mixing samples in proportion, namely polyethylene, crosslinking agent and ultraviolet absorber; b. setting oven temperature At 200°C, put the prepared samples (under sealed conditions) and bake for nearly 4 hours. During this process, shake it every half an hour, and then let it stand for 12 hours; c. Add a certain antioxidant before extruding with the extruder. °C, 160 °C, 180 °C. Extrude the sheet-like mixture; d. Use a flat vulcanizer to press the mixture into small pieces with a thickness of 1 mm, and then irradiate with ultraviolet light. Finally, the experimental samples were cut into dumbbell shapes with a punching machine.
作为优选，步骤c中使用的挤出机是电磁动态塑化挤出机，聚合物塑化挤出全过程在驱动电机的转子内腔中完成。图中各部分为：1-通风口；2-螺杆；3-料筒；4-转子；5-定子；6-机座；7-料斗。Preferably, the extruder used in step c is an electromagnetic dynamic plasticizing extruder, and the whole process of polymer plasticizing and extruding is completed in the inner cavity of the rotor of the driving motor. Each part in the figure is: 1-vent; 2-screw; 3-barrel; 4-rotor; 5-stator; 6-frame; 7-hopper.
作为优选，步骤d中使用冲片机属于实验室手动冲片装置，便于将聚乙烯类试样冲切成标准规定试样。Preferably, the tablet punching machine used in step d belongs to a laboratory manual tablet punching device, which is convenient for punching polyethylene samples into standard specified samples.
本发明所揭示的绝缘粒料混炼方法混炼混合均匀，分散性好，具有优良的定伸强度、拉伸强度、扯断伸长率等力学性能，且减少了环境污染，节省资源，设备投入小，可实现工业化生产。The insulating granule mixing method disclosed by the invention mixes uniformly, has good dispersibility, has excellent mechanical properties such as tensile strength, tensile strength, elongation at break and the like, reduces environmental pollution, saves resources and equipment The investment is small, and industrial production can be realized.
附图说明Description of drawings
为了易于说明，本发明下述的具体实施及附图作以详细描述。For ease of description, the following specific implementation of the present invention and the accompanying drawings are described in detail.
图1为本发明步骤c中的电磁动态塑化挤出机装置。Fig. 1 is the electromagnetic dynamic plasticizing extruder device in step c of the present invention.
具体实施方式Detailed ways
本发明的具体实施方案主要分为以下步骤：The specific embodiment of the present invention is mainly divided into the following steps:
1.按照比例配制一定量的混炼样品，即聚乙烯、交联剂和紫外线吸收剂；1. Prepare a certain amount of mixing samples according to the proportion, namely polyethylene, crosslinking agent and UV absorber;
2.设定烘箱温度为200℃，放入已配好比例的样品(密封条件下)烘近4h。在这过程中，每隔半小时进行一次摇晃，然后静置12h；2. Set the oven temperature to 200°C, and put the prepared samples (under sealed conditions) for nearly 4 hours. During this process, shake it every half an hour, and then let it stand for 12 hours;
3.在用挤出机挤出之前加入一定抗氧剂，挤出机共四段且每段的温度设定为130℃，140℃，160℃，180℃。挤出片状混合料，进行封袋保存；3. Add a certain antioxidant before extruding with an extruder. The extruder has four sections and the temperature of each section is set to 130°C, 140°C, 160°C, and 180°C. Extrude the flaky mixture and seal it for storage;
4.使用平板硫化机把混合料压制成1mm厚的小片，然后进行紫外光交联辐射。最后用冲片机把实验样片裁成哑铃状，做热延伸实验，测试交联度。4. Use a flat vulcanizer to press the mixture into small pieces with a thickness of 1 mm, and then perform UV cross-linking radiation. Finally, the experimental samples were cut into dumbbell shapes with a punching machine, and a thermal extension test was performed to test the degree of cross-linking.
本发明不局限于上述具体实施方式，本领域一般技术人员根据本发明公开的内容，可以采用其他多种具体实施方式实施本发明的内容，或者凡是采用本发明的设计结构和思路，做简单变化或更改的，都落入本发明的保护范围。The present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can use other various specific embodiments to implement the content of the present invention according to the content disclosed in the present invention, or make simple changes by using the design structure and idea of the present invention. Or modified, all fall within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342473.2ACN110065208A (en) | 2019-04-26 | 2019-04-26 | A kind of polyethylene insulation pellet mixing method |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342473.2ACN110065208A (en) | 2019-04-26 | 2019-04-26 | A kind of polyethylene insulation pellet mixing method |
| Publication Number | Publication Date |
|---|---|
| CN110065208Atrue CN110065208A (en) | 2019-07-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910342473.2APendingCN110065208A (en) | 2019-04-26 | 2019-04-26 | A kind of polyethylene insulation pellet mixing method |
| Country | Link |
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| CN (1) | CN110065208A (en) |
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| WO2019076653A1 (en)* | 2017-10-16 | 2019-04-25 | FEDDEM GmbH & Co. KG | DEVICE AND METHOD FOR IMPREGNATING FIBER BUNNELS WITH A POLYMER MELT |
| CN209395226U (en)* | 2018-11-19 | 2019-09-17 | 哈尔滨理工大学 | An electromagnetic dynamic plasticizing extruder device for practical production application |
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| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20190730 |