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Release agent, resin composition, sectional material as well as preparation method and application thereof

A technology of resin composition and mold release agent, applied in the fields of profiles and their preparation, mold release agent, and resin composition, can solve the problems of adverse effects of resin curing, hindering the curing of thermosetting resins, affecting the mechanical properties of products, etc., to achieve mold release The effect of the balance of the excellent manufacturability and mechanical properties

Inactive Publication Date: 2017-01-04
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this process, once agglomeration or aggregation caused by uneven dispersion occurs, defects will be formed on the surface or inside of the product, thereby reducing the mechanical properties of the product
The organic acid / ester mixture, which is liquid at room temperature, has a strong ability to capture free radicals due to its acidic nature, so it will hinder the curing of thermosetting resins to a certain extent, thereby ultimately affecting the mechanical properties of the product.
In addition, this type of release agent also has relatively strong hydrophilicity, so using this type of material alone as an internal release agent will bring a large amount of water, even moisture in the air, into the resin matrix, further affecting the resin. Curing adversely affects

Method used

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  • Release agent, resin composition, sectional material as well as preparation method and application thereof
  • Release agent, resin composition, sectional material as well as preparation method and application thereof
  • Release agent, resin composition, sectional material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0054] According to one embodiment, the invention relates to a composite material or profile comprising a cured product of a resin composition and a reinforcing fiber material. The reinforcing fiber material is in the cured product of the resin composition.

[0055] Raw material consumption also can be controlled according to the scheme of the present invention. The reinforcing fiber material in the final product is 65%-90%, such as 70%-85%, or 70%-80%. In order to further realize the reasonable mutual matching among the various components so that the performance of the composite material is better, the dosage is more optimal: 70-80% of the reinforcing fiber material and 20-30% of the resin composition in the final product. For example, by weight, the reinforcing fiber material can also be 71%, 72%, 73%, 74%, 75%, 78%, 80%, etc. By weight, the amount of the resin composition can also be 21%, 22%, 24%, 26%, 28%, 30%, etc.

[0056]It is worth noting that one key point of the ...

Embodiment 1

[0092] Embodiment 1 (pultrusion molding)

[0093] (1) Raw material preparation and preform layout

[0094] The preparation method of the composite material is as follows, and the raw materials are all in parts by weight:

[0095] 1) Pass the glass fiber yarn (4800Tex) through the creel, the glue dipping tank, the preforming mold, and finally pass through the thermoforming mold, pass the upper and lower layers of polyester surface mat through the felt guide, the preforming mold, and import Arriving and finally passing through the thermoforming mold, adjusting the count of the fiber yarn so that the glass fiber content of the final product is 80%, and the content of the resin composition in the final product is 20%;

[0096] 2) Configure the resin composition according to the following components: 100 parts of vinyl polyester resin, 1.0 parts of composite release agent with a pH value of 6.0, 15 parts of other auxiliary agents (including 3 parts of initiator TBPO / TBPB compounde...

Embodiment 2

[0100] Embodiment 2 (pultrusion molding)

[0101] Other operating steps are basically the same as in Example 1, except that the composite mold release agent consists of: 80 parts of n-heptanol, methyl methacrylate-methacrylic acid-butyl methacrylate block copolymer (three kinds of monomers in the polymer The molar ratio of the body unit is: methyl methacrylate: methacrylic acid: butyl methacrylate=2:1:1.5, number average molecular weight 35000) 22 parts, phosphorylated n-decyl alcohol 3 parts. The pH value of the composite release agent was tested to be 6.6, and the fraction in the resin composition was 1.2 parts. The surface of the sample is always smooth during the production process, without cracks, slag and missing corners, indicating that the release agent has a good effect.

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Abstract

The invention relates to a release agent, a resin composition, a sectional material as well as a preparation method and application thereof. The release agent comprises the following ingredients: (a) long-chain fatty alcohol and / or long-chain fatty ether, (b) polyacrylate polymers and (c) optional acidifying long-chain fatty alcohol, wherein the pH value of the release agent is 6.0-7.0. The release agent system is capable of realizing the balance between the demolding manufacturability and mechanical property superiority of products.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a release agent, a resin composition, a profile and a preparation method and application thereof. Background technique [0002] Thermosetting resin-based fiber-reinforced composite materials are widely used in actual production and life. Materials with high mechanical strength can be prepared by combining various reinforcing fibers, fiber fabrics and thermosetting resins, which can be very good in many occasions. It can replace metal materials such as steel bars and aluminum alloys and effectively reduce the weight of the final product. [0003] Many methods of preparing such materials require the use of additives such as internal release agents. However, for thermosetting resins with a free radical curing mechanism represented by unsaturated polyester resins, bismaleimide resins, vinyl polyester resins, etc., traditional internal mold release agents will significantly reduce ...

Claims

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Application Information

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IPC IPC(8): B29C33/62B29C70/46B29C70/48B29C70/52C08L67/06C08L63/10C08L79/08C08L33/08C08K13/04C08K7/14C08K3/34C08K3/26
CPCB29C33/62B29C70/46B29C70/48B29C70/52C08L67/06C08L79/085C08L2205/03C08L33/08C08K13/04C08K7/14C08K3/34C08K2003/265C08L33/12C08L33/14
Inventor 李枝芳董诚
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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