Rare earth silica gel heat-resistant agent

Rare earth heat-resistant agent
Model	Model introduction	Appearance	Shaking specific gravity	Packing
LXC-1020	Using Baotou high quality environmental protection rare earth raw material, the heat resistance of 20-40 ℃ can be improved on the original basis. Through the special modification process, it has little effect on the transparency of silica gel products.	Yellow powder	2.5g/cmЗ	50kg/ bag
LXC-1416	Using Baotou high-quality environmental protection rare earth raw materials, through a variety of processes specially made for the silicone industry, the heat resistance of 40-60 ℃ can be improved on the original basis.	Light yellow powder	2g/cmЗ	20kg/ box
LX-001	Using Baotou high-quality and stable environmental protection rare earth raw materials, through special process modification, and adding a variety of high-performance stabilizers, stabilizing the role of rare earth in silicone materials, can improve the heat resistance of 40-60 ℃ on the original basis, and is a high-quality additive for silicone rubber products.	Light yellow powder	2g/cmЗ	20kg/ box
LS-001	Silica gel matrix is easy to add and has better dispersibility and processability. After being added into the silicone rubber, the appearance of the silicone rubber will not be affected, and the color can be adjusted at will. It can be used at 300 ℃ for a long time. After high temperature aging, it has high retention rate of physical properties and is suitable for working at high temperature for a long time.	White paste	/	20kg/箱
LBM-130	The heat resistance of 60-80 ℃ can be improved on the original basis by using Baotou high-quality environmental protection rare earth raw materials, using good nano technology and surface soaking treatment to improve the internal lattice.	Yellow powder	0.55g/cmЗ	10kg / box or 20kg / bag
LKM-140	Using Baotou high quality environmental protection rare earth raw materials, using good nano technology, improving lattice and dispersion, can better penetrate into the polymer chain. The rare earth heat-resistant agent can be easily dispersed in organosilicon polymer, and the heat resistance of 60-80 ℃ can be improved on the original basis.	Yellow powder	0.58g/cmЗ	10kg / box or 20kg / bag
LK-150	Using Baotou high-quality environmental protection rare earth raw material, after special processing, the rare earth heat-resistant agent is more easily dispersed in organosilicon polymer, which improves the heat resistance of rare earth products, and can improve the heat resistance above 60 ℃ on the original basis.	Yellow powder	1.2g/cmЗ	10kg / box or 20kg / bag
LK-300	Using Baotou high-quality environmental protection rare earth raw materials, after crystal and surface treatment, it can better penetrate into the polymer chain. It makes the rare earth heat-resistant agent more easily dispersed in the organosilicon polymer, enhances the activity of the heat-resistant agent, thus greatly improves the heat-resistant property of the rare earth product, and improves the heat-resistant property above 80 ℃ on the original basis.	Cyan white powder	1.1g/cmЗ	10kg / box or 20kg / bag
LAC-001	It is made of Baotou high-quality environmental protection rare earth raw material and specially made by special process. It is colorless and transparent crystal and can be dissolved in deionized water. After water-soluble, it is in the form of ion, which can improve the dispersibility in the rubber and the heat resistance greatly. At the same time, it has good feedback in the test of tensile strength retention rate, elongation retention rate and other properties.	White crystal	/	20kg / box or 50kg / bag

1、 Reaction mechanism

In the state of high temperature, airtight and oxygen free, silicone rubber mainly undergoes the thermal rearrangement and degradation of the main chain, that is, depolymerization reaction, which makes the products soft (or soften), so as to lose the mechanical strength and use value. In the high temperature and oxygen environment, the oxidation of polymer side groups mainly occurs to form alkyl radicals, and the coupling reaction of free radicals leads to the increase of the sealed cross chain density, which makes the products gradually harden and even crack (called hardening).

Adding rare earth heat-resistant agent to silicone rubber can prevent the oxidative crosslinking and cyclization degradation of polysiloxane side chain. In a certain temperature range, it can prevent the free radical reaction due to oxidation in silicone rubber, and can be regenerated under the action of oxygen in the air; it can play a role of thermal stability for silicone rubber by absorbing some trace acids or alkaline substances in silicone rubber that can catalyze the degradation reaction. At the same time, the special electronic structure of rare earth heat-resistant agent (F-layer is not full) makes it easy to form complexes. The formed complexes inhibit the swelling of rubber in solvent by preventing the chain segment movement of rubber molecules, thus improving the oil resistance of rubber.

2、 Product features

① Controlling the surface activity of the rare earth heat-resistant agent can make the rare earth heat-resistant agent have good oxygen absorption ability, thus effectively inhibiting the oxidation of the side chain.

② By controlling the particle size and surface characteristics of the rare earth heat-resistant agent, it can make the rare earth heat-resistant agent and silicone rubber have good affinity, which is conducive to the full mixing of the rare earth heat-resistant agent in silicone rubber.

3、 Field of use

It has excellent effect in silicone rubber, fluorosilicone, fluororubber, EPDM, NBR, CIS butadiene rubber and other kinds of adhesives.

4、 How to use

The heat-resistant agent can be mixed into the mixture evenly in the proportion of 1-3%.

5、 Product nature

Our company uses high-quality and high-purity rare earth heat-resistant materials, which are non radioactive, non combustible and non explosive.

6、 Storage conditions

Store in a cool, dry and ventilated place.