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Preparation process, product and application of new plastic

A preparation process and plastic technology, applied in conductors, electrical components, circuits, etc., can solve the problems of poor toughness and poor temperature resistance, and achieve the effects of good compatibility, good thermal stability and improved compatibility.

Active Publication Date: 2011-03-02
GUANGDONG OMG TRANSMITTING TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blending of PVC and TPU makes the blend have both the heat resistance of TPU, and solves the performance defects of poor toughness and poor temperature resistance of PVC materials at present, and improves its flame retardancy and anti-oxidant by adding additives such as flame retardant and antioxidant. Anti-aging performance, especially the technical difficulties in the application of wire coating materials

Method used

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  • Preparation process, product and application of new plastic
  • Preparation process, product and application of new plastic
  • Preparation process, product and application of new plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a process for preparing a novel plastic, which includes the following steps:

[0045] 1. Prepare raw materials, including the following specifications of raw materials:

[0046] (1) TPU raw material specifications are:

[0047]

[0048]

[0049] (2) PVC raw material: use resin powder with K=75, P=1700 as PVC substrate;

[0050] 2. Weighing ratio;

[0051] 3. Add PVC powder, stabilizers, fillers, plasticizers, flame retardants, antioxidants, anti-ultraviolet agents, and other auxiliaries to the kneader, knead at high speed, then pre-plasticize, and control the temperature to 175°C. Pre-plasticized mixture;

[0052] 4. High temperature melting plastic TPU, high temperature melting plastic TPU;

[0053] 5. The pre-plasticized mixture is mixed with TPU particles, and the gradient temperature is controlled to squeeze into a gel. The temperature is controlled at 170°C to 180°C; specifically including:

[0054] (1) Preheat the equipment. The internal mixer is heat...

Embodiment 2

[0059] Examples 2 and 3 provide a new type of plastic. The preparation process steps are basically the same as those of Example 1. The difference lies in the raw material composition ratio, see Table 1:

[0060] Table 1 The raw material ratio of each embodiment

[0061]

[0062]

[0063] The new plastic prepared by the above-mentioned embodiments of the present invention has high wear resistance, high elasticity, easy recovery, high flame retardant, anti-ultraviolet, anti-freezing damage at northern low temperature, good thermal stability, environmental protection, soft hand feeling, anti-sticking, etc. After testing, its performance is shown in Table 2:

[0064] Table 2 Performance Test Table

[0065]

[0066]

[0067] The novel plastic prepared in the embodiment of the present invention is applied to the preparation of outer coverings of wires and cables.

Embodiment 4

[0069] This example provides a new type of plastic. The preparation process steps are basically the same as those of Example 1. The difference is that different fillers (CaCO 3 , SiO 2 , Modified kaolin, unmodified kaolin) and composition ratio, perform performance analysis, see the results figure 1 :

[0070] by figure 1 As can be seen from the table, choose CaCO 3 And controlling its content to 4% is the highest tensile strength of the blend.

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Abstract

The invention provides a process for preparing a new plastic, which comprises the following steps: (1) preparing raw materials; (2) weighing and proportioning the raw materials; (3) mixing PVC powder, stabilizers, packing, plasticizers and other additives, then carrying out high-speed kneading on the obtained mixture, and preplasticizing the mixture so as to obtain a pre-plasticized mixture; (4) mixing the pre-plasticized mixture with TPU particles, carrying out banbury mixing on the obtained mixture under the condition of gradient temperature control so as to obtain colloidal products; (5) carrying out double-screw granulation on the obtained colloidal products; and (6) carrying out sorting, dehydration and packing on the granular products obtained in step 5 so as to obtain the new plastic. The process is simple, the conditions of the process are easy to control, and the process is suitable for large-scale production. The invention also provides a new plastic, which has the characteristics of high resistance to wear and scrape, high elasticity, easy recovery, high flame retardance, ultraviolet resistance, freezing damage (caused by low temperature in the north) resistance, environmental protection, soft handfeel and stick resistance, and the like; and the new plastic can be applicable to wire and cable compound.

Description

Technical field [0001] The present invention relates to the technical field of polymer material modification, in particular to a new type of preparation method of PVC modified material, PVC modified material and its application to wires and cables. Background technique [0002] With the continuous improvement of various properties of engineering plastics, its applications have become more extensive. PVC is one of the common engineering plastics. PVC is thermoplastic, insoluble in water, gasoline and ethanol. It swells or dissolves in ethers, ketones, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons. It has strong corrosion resistance and good dielectric properties. It not only has quality It is light, and also has the characteristics of high strength, oil resistance, chemical resistance, and excellent electrical performance. It also has the characteristics of high strength, oil resistance, chemical resistance, and excellent electrical performance. Therefore, it can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/04C08L75/06C08K13/02C08K3/22H01B7/295
Inventor 魏代利
Owner GUANGDONG OMG TRANSMITTING TECH CO
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