PVC pellet composition with low compression set, and preparation method and application thereof

A technology of permanent deformation and composition, applied in the field of PVC pellet composition and PVC pellet composition with low compression permanent deformation, can solve the problems of loss of sealing function, easy aging, high price, and improve durability and service life , reduce the effect of compression set

Active Publication Date: 2015-07-15
NINGBO TAIYONG AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common PVC elastomer materials on the market cannot meet the requirements of special automobile OEMs, and its compression set is 65%-75% (under the condition of 70°C / 22 hours). During use, the bonding force between LIP and glass will be insufficient. Loss of sealing function
Although some imported PVC can meet the requirements, the price is high and the procurement cycle is long
[0005] In addition, the antibacterial and antifungal performance and weather resistance of common PVC elastomer materials currently on the market are poor, and its finished products are prone to mold and mildew in humid environments, and are prone to aging under long-term sunlight.

Method used

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  • PVC pellet composition with low compression set, and preparation method and application thereof
  • PVC pellet composition with low compression set, and preparation method and application thereof
  • PVC pellet composition with low compression set, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]The PVC pellet composition of low compression set in the present embodiment comprises the following components, and is based on every 100 parts by weight of PVC with other parts by weight in proportion:

[0041]

[0042] In addition, it also contains the following components, and the weight ratio based on 100 weight parts of PVC is:

[0043]

[0044] For its preparation process, see figure 1 , the specific steps are:

[0045] a. Calculate the required weight of each component according to the weight ratio, and weigh each component material according to the calculated result;

[0046] b. Put all components except powdered nitrile rubber into the high-speed mixer, start the machine for high-speed mixing, set the speed of the mixer to 800-1000 rpm, and when the temperature of the material in the machine reaches 120-130°C When, stop;

[0047] c. Transfer the hot material in the high-speed mixer to the cold mixer, start it up for cooling and mixing, and select the mi...

Embodiment 2

[0057] The PVC pellet composition of low compression set in the present embodiment comprises the following components, and is based on every 100 parts by weight of PVC with other parts by weight in proportion:

[0058]

[0059]

[0060] In addition, it also contains the following components, and the weight ratio based on 100 weight parts of PVC is:

[0061]

[0062] Its preparation method refers to Example 1.

[0063] After testing, its main performance indicators including compression set can also meet the requirements listed in Table 1. Because the present embodiment increases the amount of addition to the elastic modifier powder nitrile rubber P35, and reduces the content of the plasticizer diisononyl phthalate and epoxy soybean oil simultaneously, the purpose is to ensure the stability of the PVC modified pellets. The hardness remains basically unchanged, and the advantage of this embodiment is that the compression set performance is more excellent than that of t...

Embodiment 3

[0066] The PVC pellet composition of low compression set in the present embodiment comprises the following components, and is based on every 100 parts by weight of PVC with other parts by weight in proportion:

[0067]

[0068] In addition, it also contains the following components, and the weight ratio based on 100 weight parts of PVC is:

[0069]

[0070] Its preparation method refers to Example 1.

[0071] After testing, its main performance indicators including compression set can also meet the requirements listed in Table 1. Because the present embodiment has reduced the addition amount to elastic modifier powder nitrile rubber P35, increased the content of plasticizer diisononyl phthalate and epoxidized soybean oil simultaneously, purpose is to reduce the elastic modifier At the same time, it is ensured that the hardness of the PVC modified pellets remains basically unchanged; the advantage of this embodiment is that the material cost is relatively low. Since the...

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Abstract

The invention provides a PVC pellet composition with low compression set, and a preparation method and application thereof. The PVC pellet composition comprises PVC resin, an elasticity modifier full cross-linking type powdery butadiene-acrylonitrile rubber P35, a plasticizer diisononyl phthalate, another plasticizer epoxidized soybean oil, a Ca/Zn composite heat stabilizer, a colloidizing aid acrylate copolymer, an outer lubricant polyethylene wax, an inner lubricant butyl stearate, an antiseptic and a weather-resisting agent. The PVC pellet composition substantially improves durability and service life of finished products and is especially applicable to manufacturing of automobile window sealing strips or building door-and-window sealing strips with high requirements on elastic recovery.

Description

technical field [0001] The invention relates to a PVC pellet composition (or called PVC elastomer material), especially a PVC pellet composition with low compression set; it also relates to its preparation method and specific use; it belongs to high molecular compound composition technology field. Background technique [0002] PVC is the English abbreviation of polyvinyl chloride modified material. PVC is cheap, rich in raw materials, and easy to process. It is widely used in automobiles, construction, home appliances, cables and other industries. It is one of the plastic products with the largest output in the world. PVC elastic materials mainly achieve the purpose of reducing the compression permanent deformation of PVC modified materials through some formula combinations and production technology, and then improve the deformation recovery function of products made of PVC elastic materials. [0003] Ordinary PVC elastomer materials have poor elasticity, and their finishe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08K13/02C08K5/12C08K5/1515C08K5/101C08K3/04B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08L27/06C08L2205/035C08L9/02C08L23/06C08L91/00C08K13/02C08K5/12C08K5/09C08K3/04
Inventor 胡益男
Owner NINGBO TAIYONG AUTOMOTIVE PARTS
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