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Rapidly-formable composite rotomolding material and power preparation method thereof

A fast and plastic technology, applied in the field of rotomolding modification, it can solve the problems of inability to grind and slow molding time, and achieve the effect of avoiding resin degradation, high working temperature and balancing mechanical properties.

Inactive Publication Date: 2019-03-08
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of slow molding time and inability to grind at room temperature mentioned in the above-mentioned background technology, the present invention provides a composite rolling plastic that can be rapidly formed, which is specifically composed of the following raw materials in parts by mass:

Method used

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  • Rapidly-formable composite rotomolding material and power preparation method thereof
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  • Rapidly-formable composite rotomolding material and power preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A. Blending and granulation: according to the raw material combination of Example 1 in Table 1, weigh 60 parts of LLDPE (MI=5), 36 parts of PA, 3 parts of compatibilizer, 0.3 part of nucleating agent, and 0.3 part of lubricant and 0.4 parts of antioxidant are blended in a high-speed mixer for 1 min, and enter into a twin-screw extruder through a feeder for melt blending and extrusion, cooling, pelletizing, and drying of the obtained particles for subsequent use;

[0031] B. Milling at room temperature: Under normal temperature conditions, the particles of the composition are ground through a millstone and screened with a 35-mesh screen to obtain the required rolling plastic powder.

[0032] The composite rotomolding plastic obtained above can be processed according to the rotomoulding process to obtain the corresponding rotomolding products. The process parameters are: charging amount 800g; heating temperature: 35-240°C; heating time: 0-40min; cooling time: 30min; Cooli...

Embodiment 2

[0034] Using the raw material ratio in Table 1, using the preparation method of Example 1, the corresponding composition powder and rotomolded product were obtained.

Embodiment 3

[0036] Using the raw material ratio in Table 1, using the preparation method of Example 1, the corresponding composition powder and rotomolded product were obtained.

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Abstract

The invention relates to the technical field of rotomolding material modification, in particular to a rapidly-formable composite rotomolding material and a power preparation method thereof. The composite rotomolding material comprises, by mass,, 60-80 parts of polyethylene, 15-40 parts of polyamide, 0.1-0.5 part of lubricants, 0.1-5 parts of compatibilizers, 0.1-0.3 part of nucleating agent, 0.1-1part of nano-filler and 0.1-0.5 part of antioxidant. The rapidly-formable composite rotomolding material has the advantages that gas accumulation and disappearance on the surface of molten resin arepromoted through a certain proportion of nano-fillers, the rotomolding time is shortened, resin degradation is avoided, and polyethylene / polyamide rotomolding products with smooth and pore-free surfaces are obtained; the prepared composite rotomolding material can be grinded at the normal temperature, the high cost of existing refrigerating and grinding techniques is avoided, and the polyethylene / polyamide rotomolding products, with the smooth and pore-free surfaces, high working temperatures and balanced mechanical properties, applicable to rotomolding are obtained.

Description

technical field [0001] The invention relates to the technical field of rotomold plastic modification, in particular to a rapidly prototyping composite rotomold plastic and a powder preparation method thereof. Background technique [0002] Rotational molding is a common processing method for plastic hollow products, such as urea tanks, water tanks, incubators, dry refrigerators, and floor washing machines. The basic raw materials of rotomolded products on the market are various grades of polyethylene resins. Due to the characteristics of poor wear resistance, poor solvent resistance and high temperature resistance of polyethylene resins, the application of rotomolded products has certain limitations. The polyamide resin can make up for these defects, so the development of rotationally molded polyamide materials has become a research hotspot in the field of rotational molding. [0003] Patent CN200380103931, the disclosure date is December 28, 2005, mainly through multi-layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L77/02C08L51/06C08K3/26C08K5/098
CPCC08K2003/265C08K2201/011C08K2201/014C08L23/0815C08L2201/08C08L2205/03C08L77/02C08L51/06C08K3/26C08K5/098
Inventor 卢聪杰牧晓春梁聪立雷伟伟
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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