PE/ultra -fine wood powder’s performance research and system Sheet ExtRusion Machine

Date:2022-7-19 Author:Sam

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pe/ pe/ pe/ pe/ pe/ PE/ When the ultra -fine wood powder composite material is different, the performance of the composite material changes Xinchen Extrusion
, found

PE and and and and and and and and and and and. When the proportion of ultra -fine wood powder is 17: 3 , the performance is the best. By adding different surface treatment agents, aluminate is found to be better. ] 5% compatible agent helps improve the performance of composite materials. A study on wood plastic composite (WPC)found that the composite performs best with a 17:3 ratio of polyethylene (PE)to wood powder. Meanwhile, aluminate coupling agent was found to be the mosteffective additive to Improve Product Surface. An adDition of 5% Coupling Agentshows Marked Improvement in Performance. ]

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Table 1-1 Experimination of the experiment formula: mass percentage%.
Place ultra -fine wood powder at electric heating constant temperature drum drum drum The air drying box, the drying temperature is 80 ° C, and the drying time is 5-6 hours.
Photo: \u0026 nbsp; [12]3]1 Dry process
23 Composite materials, which are two or more materials of more than two or more properties. The method of chemistry constitutes new performance materials on a macro (micro). Various materials have grown up and supplemented with each other, producing synergistic effects, making the comprehensive performance of composite materials better than the original composition materials and meet various requirements. Together with the two materials of wood powder and high -density polyethylene (PE), in addition to the performance of the composite materials, the composite material has its own performance that it does not have. Scope of application. Preparation process
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表1-1 实验配方配比单位:质量百分比%。
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The experimental part The raw material and ratio hdpe: 5000s, Daqing Petrochem Fine wood powder: 800 mesh, homemade; Silicine coupling agent (surface treatment agent): KH-550, commercially available; aluminate coupling agent (surface treatment agent): industrial grade, commercially available; titanate coupling agent; (Surface treatment agent): industrial grade, commercially available; Malay acid anhydride branch PE (compatible agent): industrial grade, commercially available; polyethylene wax: industrial grade, commercially available; re -antioxidants: PA001, homemade. Instrument and equipment Precision electron claims, BWS-SW-6, Xiamen Balens Electronic Technology Co., Ltd.; Electric Heating Hengchen Drum Wind Dry Box, YHG-9079A , Shanghai Yao’s Instrument and Equipment Factory; high-speed mixer, SHR-\u0026 NBSP; 10L, Jiangsu White Bear Machinery Co., Ltd.; dual screw extruder, SK-35, Nanjing Kia Chemical Complete Equipment Co., Ltd.; injection machine, PT60, Haitian Group; Haitian Group; Put the hammer impact test machine, XJH, Chengde Cou’en Science Testing Co., Ltd.; electronic universal test machine, CMT4104, Shenzhen Sansi Zatong Heng Co., Ltd..
Hybrid process


⑴ \u0026 nbsp; Put the dry super fine wood powder into a high -speed mixer for 10 minutes, when the temperature rises to 80 ° C, put it in and put in input. Surface processing machines perform surface treatment. \u0026 Nbsp; According to the proportion in the formula, the precision electronic scale is used to weigh the weights required for each component into a high-speed mixer for high-speed stirring for 1-3 minutesRelease the mixed materials on the left and right. Squeezing out process

Investment the mixed materials into the preheated double screw extruder for melting, extrusion, and granules, and making a total of coexistence Mixed alloy material.

Preparation of samples

Dry process


In the electric heating constant temperature drum drying box, the drying temperature is 80 ° C and the drying time is 2-4h.
injection molding process
It will be fully dry and good composite materials into the required size and shape of the national standard sample, and then place it for 24 hours.
Performance test


According to gb/\u0026 nbsp; t \u0026 nbsp; 1040-2006 to test the stretching performance of the sample, the stretch rate is 50 \u0026 nbsp; mm/\u0026 nbsp; min \u0026 nbsp; According to GB/\u0026 Nbsp; T \u0026 Nbsp; 9341-2000 Test the curved performance of the sample, the bending rate is 2 \u0026 nbsp; mm/\u0026 nbsp; min \u0026 nbsp; It is 2.75J.

Results and analysis


Stretch performance

As the content of wood powder gradually increases The stretching performance of HDPE/Wooden powder composite materials gradually decreased, while the break rate of HDPE/Mongolian composite material decreased significantly, from the original 400%to 100%, a 4 times folded. When ultra -fine wood powder is 15%in the composite material content, when adding 0.5%of different types of surface treatment agents, the impact on the stretching performance of composite materials is different. most. With the gradual increase of aluminate content, the stretch strength and fracture and elongation of HDPE/ultra -fine wood powder composite material gradually increased. With the gradual increase of the compatibility agent, the stretch strength and fracture and elongation rate of HDPE/ultra -fine wood powder composite materials gradually increased. When the content of the consequence agent is 10%, the HDPE/ultra -fine wood powder composite material The best stretch performance.

Bending performance With the continuous increase of ultra -fine wood powder, the curved performance of composite materials also increases. When ultra -fine wood powder is 15%in the composite material content, adding 0.5%of different types of surface treatment agents, the effects of bending performance are relatively large. Among them, the sequence of performance effect is KH550 \u0026 GT; titanate \u0026 gt; aluminate; aluminum acid ester. AluminateThe curved performance of composite materials has minimized, and the curvature performance of the composite material is basically improved but increased. As the content of aluminate gradually increases, the bending performance of HDPE/ultra -fine wood powder composite material gradually increases. With the gradual increase of the compatibility agent, the curved strength and curved modulus of HDPE/ultra -fine wood powder composite material gradually increased. When the content of the consequence agent is 10%, the bending of HDPE/ultra -fine wood powder composite materials The best performance. \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp;

Conclusion


It was found in HDPE /In the ultra -fine wood powder composite material, if the surface treatment agent and other additives are not added, the performance of the composite material changes with the different content of the ultra -fine wood powder, and the impact on the different performance of the composite materials is different. According to comprehensive consideration, the performance of HDPE/ultra -fine wood powder composite materials when the content of ultra -fine wood powder is 15%is better.
In order to solve the problem of reducing the stretching performance of HDPE/ultra -fine wood powder composite materials, after selecting the surface treatment agents of different varieties of surface treatment agents for research, system research selection is most suitable for HDPE/ultra -fine wood powder composite The surface treatment agent of the material, so as to improve the stretching performance of HDPE/ultra -fine wood powder composite material, does not reduce or even reduce the other performance of HDPE/ultra -fine wood powder composite materials. By selecting compatible agents of different contents, it is found that when the addition is 10%, the stretching performance of HDPE/ultra -fine wood powder composite material and curved performance are the largest. The developed HDPE/ultra -fine wood powder composite materials are mainly used in building products (window frames, doors), infrastructure (pads, road plates), transportation industry (tray, container), and daily necessities (shelves, furniture), etc.