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Materials dedicated for antibacterial and permeable polyolefin film and preparation method thereof

A technology of polyolefin and breathable membrane, which is applied in the field of special materials for polyolefin antibacterial and breathable membranes. It can solve the problems of non-bacterial, complex process requirements, and difficult control of phase separation, and achieve the effect of ensuring uniformity.

Inactive Publication Date: 2006-09-06
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above three patent application technologies have the following disadvantages: they cannot effectively form holes and control the pore size, they are not antibacterial, and what Chinese patent application CN02116720.6 uses is an internal mixer, and the process is more cumbersome and complicated
The disadvantage is that the phase separation form is not easy to control when the film is stretched, and the process requirements for the subsequent pore-forming process are very complicated. In addition, the price of the breathable film obtained by this method is high

Method used

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  • Materials dedicated for antibacterial and permeable polyolefin film and preparation method thereof
  • Materials dedicated for antibacterial and permeable polyolefin film and preparation method thereof
  • Materials dedicated for antibacterial and permeable polyolefin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] In a 200-liter kneader, add 20 kg of nano-calcium carbonate (with a particle size of 30 to 65 nanometers) and 60 kg of heavy calcium carbonate (with a particle size of 6 to 10um) according to the formula in Example 1 of Table 1. Under low-speed stirring, add 0.8 kg of methacrylic acid, 0.8 kg of stearyl methacrylate, 0.008 kg of di-tert-butyl peroxide, and 1 kg of sodium hexadecyloxy polyoxyethylene ether sulfonate ( The degree of polymerization of polyoxyethylene ether is 20), 3 kg of maleic anhydride grafted linear low-density polyethylene (grafting rate 1.2 mmol / 100 g) and 14.4 kg of linear low-density polyethylene (melt flow rate is 17g / 10min), after the addition, stir at high speed for 1 minute to obtain a mixture.

[0068] Put the mixture into the feeding hopper of the twin-screw extruder, extrude and cut pellets in a twin-screw extruder with a 48:1 length-to-diameter ratio and a screw diameter of 75mm with a screw plus 5-stage mixing elements. The main engine speed o...

Embodiment 2

[0072] According to the same processing conditions as in Example 1, the mixed calcium carbonate pre-dispersed masterbatch HCM-2 was prepared according to the formula of Table 1 and Example 2, and the special material for polyolefin antibacterial breathable film GPM-2 was prepared according to the formula of Example 2 of Table 2. . The difference from Example 1 is that GPM-2 is suitable for blowing into a film to make a breathable film.

Embodiment 3

[0074] The steps are the same as in Example 1, and the mixed calcium carbonate pre-dispersed masterbatch HCM-3 is prepared according to the formula of Example 3 in Table 1. The processing conditions are different from that in Example 1: The main engine speed of the twin-screw extruder is 280 rpm, the feeding speed is 40 rpm, and the temperature of each section of the extruder (including the head of the 6 sections) is sequentially 180°C, 200°C, 200°C, 195°C, 195°C, 190°C. According to the formula of Example 3 in Table 2, the special material GPM-3 for polyolefin antibacterial breathable film was prepared.

[0075] Example 1

[0076] Example 1

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Abstract

The invention relates to a process for preparing polyolefin antibacterial permeability membrane, which consists of mixing 10-30 contents of nanocalcium carbonate and 10-65 contents of heavy calcium carbonate first, adding 0.1-10 contents of unsaturated acid monomer, 0.1-20 contents of long fatty chain monomer, 0.001-5 contents of initiating agent, 0.1-10 contents of polyethersulphonate and 0.1-20 contents of macromolecular coupling agent and 5-80 contents of polyolefin resin, first preparing predisperse masterbatch of mixed calcium carbonate in the twin-screw extruder, afterwards, mixing 20-80 contents of predisperse masterbatch of mixed calcium carbonate, 0.1-5 contents of hole leveler, 0.1-0.5 contents of anti-oxidant, 2-20 contents of compound antibacterial mother particle and 20-70 contents of polyolefin resin in high-speed mixer, squeezing the prill by twin-screw extruder, drying and vacuum-packing, obtaining the special material of antibacterial permeability membrane. The invention is characterized in that the interactive condition between the polyolefin and calcium carbonate is strong, the filling material is readily dispersed in the polymeric matrix, the special material of permeability membrane can not only form film using doctor-blading process, but also can form film using blowing process, the pore diameter of the said permeability membrane is uniform, and its antibacterial behavior is excellent.

Description

Technical field [0001] The invention relates to a method for preparing a special material for polyolefin antibacterial breathable film that is suitable for casting into a film and can be blown into a film. After the film is stretched, it has easy and uniform pore formation and has long-lasting antibacterial properties; [0002] The invention also relates to a special material for polyolefin antibacterial breathable film prepared by the method. Background technique [0003] High-breathable polyolefin cast film special resin is a new type of polymer material developed abroad in the 1990s, and it is a high-end synthetic resin development and deep processing project product. The film produced by the resin through the casting and stretching process has the characteristics of large air permeability but no water leakage, soft texture, high tensile strength, good sanitary performance, and rapid environmental degradation after being discarded. Since 1990, Japan, South Korea and Germany ha...

Claims

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Application Information

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IPC IPC(8): C08F20/06C08F2/44C08J5/18C08K3/26
Inventor 蒋文真李刚岳恒帅谢怀兴章永化赵建青游华燕刘宝玉
Owner 合诚技术股份有限公司
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