Low-volatile-separation PVC (Polyvinyl Chloride) particle composition and preparation method and application thereof

A composition and low-volatility technology, applied in chemical instruments and methods, and other chemical processes, can solve the problems of polluting the surface of products, reducing elasticity, and slowly hardening PVC products, so as to achieve low volatility and prolong service life , the effect of preventing losses

Active Publication Date: 2012-09-12
NINGBO TAIYONG AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, on the one hand, the surface of the product will be polluted due to the precipitation of the plasticizer; on the other hand, due to the loss of the plasticizer, the PVC product will gradually harden and the elasticity will decrease, which will affect the performance of its finished product.
[0004] PVC modified material is the main raw material for manufacturing automobile sealing strips. Some automobile OEMs require that the plasticizer precipitation of soft PVC elastic materials be controlled in a very low range. Usually, the American ASMT D1203-A standard is adopted. T

Method used

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  • Low-volatile-separation PVC (Polyvinyl Chloride) particle composition and preparation method and application thereof
  • Low-volatile-separation PVC (Polyvinyl Chloride) particle composition and preparation method and application thereof
  • Low-volatile-separation PVC (Polyvinyl Chloride) particle composition and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The low-volatility PVC pellet composition in the present embodiment comprises the following components, and the proportioning by weight of other components based on 100 parts by weight of PVC is as follows:

[0038]

[0039] In addition, it also includes the following components, and the weight ratio based on 100 weight parts of PVC is:

[0040]

[0041] In this embodiment, the heat stabilizer is a Ca / Zn stabilizer, the gelling aid is a methacrylate copolymer and is selected from P551 brand, the external lubricant is polyethylene wax, and the internal lubricant is stearic acid, powder Nitrile rubber selects P83 brand.

[0042] For its preparation process, see figure 1 , the specific steps are:

[0043] a. Calculate the required weight of each component according to the weight ratio, and weigh each component raw material according to the calculated result;

[0044] b. Put all the components except powdered nitrile rubber into the high-speed mixer, start the mach...

Embodiment 2

[0054] The low-volatility PVC pellet composition in the present embodiment comprises the following components, and the proportioning by weight of other components based on 100 parts by weight of PVC is as follows:

[0055]

[0056]In addition, it also includes the following components, and the weight ratio based on 100 weight parts of PVC is:

[0057]

[0058] In this embodiment, the heat stabilizer is a Ca / Zn stabilizer, the gelling aid is a methacrylate copolymer and is selected from P551 brand, the external lubricant is polyethylene wax, and the internal lubricant is stearic acid, powder Nitrile rubber selects P83 brand.

[0059] Its preparation method refers to Example 1.

[0060] After testing, its main performance indicators including high-temperature volatilization loss indicators can also meet the requirements listed in Table 1. Because the present embodiment plasticizer dioctyl terephthalate content selects minimum 46, so plasticizer dioctyl phthalate selects ...

Embodiment 3

[0063] The low-volatility PVC pellet composition in the present embodiment comprises the following components, and the proportioning by weight of other components based on 100 parts by weight of PVC is as follows:

[0064]

[0065] In addition, it also includes the following components, and the weight ratio based on 100 weight parts of PVC is:

[0066]

[0067] In this embodiment, the heat stabilizer is a Ca / Zn stabilizer, the gelling aid is a methacrylate copolymer and is selected from P551 brand, the external lubricant is polyethylene wax, and the internal lubricant is stearic acid, powder Nitrile rubber selects P83 brand.

[0068] Its preparation method refers to Example 1.

[0069] After testing, its main performance indicators including high-temperature volatilization loss indicators can also meet the requirements listed in Table 1. Since the plasticizer dioctyl terephthalate with a higher market price in this embodiment has more content, the single index of high-...

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Abstract

The invention provides a low-volatile-separation PVC (Polyvinyl Chloride) particle composition and a preparation method and an application thereof. Based on every 100 parts by weight of PVC, the composition comprises the following components in parts by weight: 46-60 parts of dioctyl terephthalate serving as a PVC100 plasticizing agent, 3-5 parts of a thermal stabilizer, 2-4 parts of a gelatinizing aid, 10-30 parts of powder nitrile rubber, 0.4-1.0 part of an external lubricant and 0.4-1.0 part of an internal lubricant. The preparation method comprises the following steps of: weighing component raw materials according to a formula; mixing at a high speed to 125 DEG C; performing cold mixing at a low speed to a temperature below 40 DEG C; extruding with a single screw; pelletizing; and cooling and packaging with a fan. The low-volatile-separation PVC particle composition is suitable for manufacturing an automobile sealing strip which requires low volatile separation of a plasticizing agent.

Description

technical field [0001] The invention relates to a PVC pellet composition, especially a PVC pellet composition with low volatile precipitation; it also relates to its preparation method and specific application; it belongs to the technical field of polymer compound compositions. Background technique [0002] PVC is the English abbreviation of polyvinyl chloride. PVC is cheap and widely used. It is one of the plastic products with the largest output in the world. [0003] Ordinary soft PVC modified materials, in the high temperature environment, the ordinary plasticizer in PVC will slowly volatilize and precipitate on the surface of the product. In this way, on the one hand, due to the precipitation of the plasticizer, the surface of the product will be polluted; on the other hand, due to the loss of the plasticizer, the PVC product will gradually harden and its elasticity will decrease, which will affect the performance of its finished product. [0004] PVC modified material...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L9/02C08L33/10C08L23/06C08K13/02C08K5/12C08K5/09C08K5/1515C08K3/04C08K3/26B29C47/92C09K3/10B29C48/92
CPCB29C48/911B29C48/04B29C48/397
Inventor 胡益男
Owner NINGBO TAIYONG AUTOMOTIVE PARTS
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