Medicinal low-temperature-resistant toughening anti-gamma ray impact-resistant transparent polypropylene material and preparation method thereof

A technology of transparent polypropylene and gamma rays, which is applied in the field of polypropylene materials, can solve the problems affecting the toughness of materials, the syringe is easy to break, and the molecular chain is broken, so as to achieve excellent toughness and impact resistance, improve gamma ray resistance, Excellent low temperature resistance effect
CN101967247BInactive Publication Date: 2012-11-21苏州晋圣博高分子材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
苏州晋圣博高分子材料科技有限公司
Publication Date
2012-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a medicinal low-temperature-resistant toughening anti-gamma ray impact-resistant transparent polypropylene material and a preparation method thereof. The medicinal low-temperature-resistant toughening anti-gamma ray impact-resistant transparent polypropylene material is prepared by completely mixing a base material, a flexibilizer, a gamma shielding auxiliary agent, a transparent nucleating agent, an antioxidant, a lubricant, a brightening agent and a molecular weight regulator according to the proportion, wherein homopolymerized polypropylene serves as the base material. An ethylene-octylene-propylene ternary random copolymer is adopted, so the medicinal low-temperature-resistant toughening anti-gamma ray impact-resistant transparent polypropylene material has excellent toughness and impact resistance and low-temperature resistance, is transparent, and fundamentally solves the problem that a medicinal polypropylene material is not transparent. A reactive type hindered amine stabilizing agent is grafted on a polypropylene molecular chain by a reaction extrusion method, so the gamma ray resistance is improved. After the medicinal polypropylene material prepared by the method is subjected to 25-kilojoule gamma irradiation, the yellowing index is less than 1; and then a moulding part is placed in a 70-DEG C baking oven for 8 weeks, the yellowing index is 3, the comprehensive mechanical property is reduced by 5 percent, and the transparency maintains over 90 percent.
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Description

technical field

[0001] The invention relates to the field of polypropylene materials, in particular to a medical low-temperature-resistant toughened anti-gamma ray impact-resistant transparent

[0002] Polypropylene material and method for its preparation. Background technique

[0003] As a large class of general-purpose materials, polypropylene is widely used for its small specific gravity, easy processing, corrosion resistance, non-toxicity and excellent comprehensive performance. At present, medical equipment such as syringes and droppers used in China are mainly made of polypropylene materials. Due to the material, there are the following problems: (1) Polypropylene has poor low temperature resistance, so some medical equipment produced in the cold winter There are serious damages during transportation; (2) Polypropylene materials are sterilized with ethylene oxide propylene. On the one hand, ethylene oxide propylene will be emitted in the air during use, affecting the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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