KR20010096666A - Themoplastic material alternative to P.V.C - Google Patents

Abstract

PURPOSE: A thermoplastic synthetic resin for substituting for PVC and its preparation method are provided, to prevent pollutant dioxin from being generated and to reduce the amount of the generation of carbon dioxide. CONSTITUTION: The thermoplastic synthetic resin is prepared by mixing 70-90 wt% of an ethylene copolymer, 10-30 wt% of an EDPM terpolylmer, 0.3-0.5 wt% of a filler, 0.3-1 wt% of a lubricative, and 0.1-0.8 wt% of other additives; and melt extruding the mixture at a temperature of 210-260 deg.C in the case of a colored resin. Also the thermoplastic synthetic resin is prepared by mixing 5-30 wt% of an ethylene terpolymer, 70-90 wt% of an ethylene copolymer, 0.3-0.5 wt% of a filler, 0.3-1 wt% of a lubricative, and 0.1-0.8 wt% of other additives; and melt extruding the mixture at a temperature of 210-260 deg.C in the case of a colorless resin. Preferably the melt extruding process is carried out for 5-20 min.

Description

Thermoplastic material alternative to P.V.C}

Since harmful environmental substances (dioxin, etc.) generated during the combustion of existing P.V.C thermoplastic materials are causing serious environmental pollution, the development of alternative materials is urgently needed, and therefore, to create a new synthetic resin that is environmentally friendly and can satisfy the molding processability of products.

The present invention is a method of manufacturing and commercializing a thermoplastic synthetic resin that can significantly reduce the emission of carbon dioxide without any dioxin discharged from the conventional P.V C.

New synthetic resin made through extruder after mixing basic synthetic resins and various non-toxic additives that are harmless to environmental pollution

In order to achieve the object of the present invention, 70-90% of the basic synthetic resin ethylene copolymer, 10-30% of the EDPM terpolymer, 5-30% of the ethylene copolymer polymer, 70- of the ethylene copolymer PVC substitute synthetic resin obtained by mixing 95%, 0.3-0,5% of filler, 0.3-1% of active material, 0.1-0.8% of non-toxic additives such as stabilizer, and melt-blending at extruder cylinder temperature of 210 ° -260 °

The present invention will be described in more detail as follows.

In the present invention, in the production of colored synthetic resin, 70-90% of the basic synthetic resin ethylene copolymer, 10-30% of EDPM terpolymer, 0.3-0.5% of filler, 0.3-1.0% of lubricant, 0.1-0.8 of stabilizer and additives In the case of transparent resin, 5-30% of ethylene terpolymer, 70-95% of ethylene copolymer (EVA), 0.3-0.5% of filler, 0.3-1.0% of lubricant, 0.1-0.8% of stabilizer and other additives Rotate 15-20 minutes in a low speed compounder, remove moisture from the mixture for 15-20 minutes at 40 ° -50 ° C through a dehumidifier, put it in an extruder through a hopper, and mix the ratio of the resin to express softness and hardness. As Shore A 50-90 also available

Extruder conditions are processed at a cylinder temperature of 150 ° C-200 ° C so that the extruder screw cylinder length is 32: 1, and the partial pressure of the middle part of the screw is melted.

If the extruder cylinder temperature is higher than 220 degrees, it will burn or turn yellow and the transparency will be lowered and the desired color will not be obtained.

In addition, if the melt mixing time of the extruder is less than 5 minutes, the effect of mixing is less, and if more than 20 minutes, it is difficult to expect further effects.

Synthetic resin of the present invention, which can be obtained through such a manufacturing process, can provide a high strength adhesive effect when a certain polar group is given to some degree of ethylene, compared to conventional ethylene products.

(Example 1)

Based on the material obtained in the manufacturing process of the present invention

Physical property test result of sheet manufactured by calendar machine: Refer to Table 1

Example 2

Transparent and colored sheets obtained in the above procedure: see Table 2.

PVC substitute synthetic resin of the present invention does not generate environmentally harmful substances (dioxin, etc.) emitted by the existing PVC, and even the amount of carbon dioxide emission is significantly reduced, and the existing ethylene product can give a certain degree of polarity as compared with no adhesiveness at all. Therefore, it is possible to obtain the adhesive effect even if it is generally modified without the need for a special pretreatment agent used in the past.

In addition, product molding using calendar, t-die and injection machine is satisfied, and its marketability is surely demanded in domestic and overseas market.

Claims (1)

Based on the present invention, the manufacturing method and the present invention Commercialized goods