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Preparation method of special resin for making high-filling high-permeable unidirectionally-stretching film

A technology of air-permeable sheets and films, which is applied in the field of preparation of special resins for high-filling and highly-breathable uniaxially stretched films. Transverse stretching is easy to break, improves the uniformity of dispersion, and improves the effect of melt fluidity

Inactive Publication Date: 2007-01-24
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of film can only be used for disposable packaging materials such as medical and sanitary packaging, food packaging, and daily products.
At the same time, the air permeability of the cast film made of this kind of special resin is generally 1000-2500g / 24h.m 2 Among them, the air flow is small, the electrical insulation performance is poor, and the comprehensive mechanical properties cannot meet the requirements of instrumentation packaging, electronic packaging and building wall mildew resistance.
[0004] According to the results of domestic data retrieval, there is no research on using kaolin and m-PE (metallocene polyethylene) as raw materials, adding auxiliary agents such as zirconium aluminate coupling agent, to make a special resin for high filling and high air permeability uniaxial stretching film Literature, patents and achievement reports

Method used

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  • Preparation method of special resin for making high-filling high-permeable unidirectionally-stretching film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 26.5kg of kaolin (particle size 2um) in a high-speed kneader, control the speed of 750r.p.m, and the temperature of 105°C. After kneading for 25 minutes, add 0.7kg of zirconium aluminate coupling agent for 12 minutes of coupling treatment, and then add 3.0 kgPE wax, control speed 500r.p.m, temperature 98℃, disperse for 8 minutes, add density 0.91g / cm 3 , after the melt flow rate is 1.1g / 10min m-PE21kg, antioxidant DLTP0.7kg, the control speed is 250r.p.m, the temperature is 87°C, blended for 6 minutes, placed in a pressurized internal mixer, and the temperature is controlled at 144 ℃, banburying for 13 minutes, and then extruded and pelletized by a twin-screw extruder to form a special resin. Extruder barrel control temperature: zone I 160°C, zone II 173°C, zone III 177°C, zone IV 173°C, zone V 170°C, die head 158°C.

Embodiment 2

[0018] Put 26.5kg of kaolin (particle size 5um) in a high-speed kneader, control the speed of 750r.p.m, and the temperature of 101°C. After kneading for 25 minutes, add 0.4kg of zirconium aluminate coupling agent, couple for 12 minutes, and then add 2.5 kgPE wax, control speed 500r.p.m, temperature 100℃, disperse for 8 minutes, add density 0.92g / cm 3 , after the melt flow rate is 0.9g / 10min m-PE19kg, antioxidant DLTP0.5kg, the control speed is 250r.p.m, the temperature is 85°C, blended for 6 minutes, placed in a pressurized internal mixer, and the temperature is controlled at 140 ℃, banburying for 13 minutes, and then extruded and pelletized by a twin-screw extruder to form a special resin. Extruder barrel control temperature: zone I 163°C, zone II 173°C, zone III 180°C, zone IV 176°C, zone V 166°C, die head 155°C.

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Abstract

A resin dedicated for the monodirectional tension film with high filling factor and air permeability is prepared from kaolin, m-PE, zirconium aluminate, PE wax, and antioxidizing agent DLTP through coupling, dispersing, proportionally mixing, banburying, extruding out and granulating. It has high fusion flowability, high-temp resistance, air permeability, electric insulation, printing performance, etc.

Description

technical field [0001] The invention relates to a preparation method of a new plastic stretch film material, in particular to a preparation method of a high-filling and high-breathability special resin for one-way stretch film. Background technique [0002] Highly filled and highly breathable uniaxially stretched film special resin is a new type of resin-based functional composite material. The film produced by this kind of resin through extrusion and unidirectional stretching process has the characteristics of high air permeability, water impermeability, good electrical insulation performance, good printability and mechanical properties, and low cost. It can be applied to the fields of instrumentation packaging, electronic appliance packaging, and anti-mildew on building walls. [0003] In recent years, some domestic research institutes and enterprises have developed special resins and resins with polyolefins and ultrafine mineral fillers such as calcium carbonate and talc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K3/34B29C55/02
Inventor 张华集肖荔人张雯
Owner FUJIAN NORMAL UNIV